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1

New Rate Schedule CV-UUP1 UNITED STATES DEPARTMENT OF ENERGY  

NLE Websites -- All DOE Office Websites (Extended Search)

UUP1 UNITED STATES DEPARTMENT OF ENERGY WESTERN AREA POWER ADMINISTRATION CENTRAL VALLEY PROJECT SCHEDULE OF RATE FOR UNRESERVED USE PENALTIES Effective: October 1, 2011, through...

2

New Rate Schedule CV-UUP1 UNITED STATES DEPARTMENT OF ENERGY  

NLE Websites -- All DOE Office Websites (Extended Search)

UUP1 UUP1 UNITED STATES DEPARTMENT OF ENERGY WESTERN AREA POWER ADMINISTRATION CENTRAL VALLEY PROJECT SCHEDULE OF RATE FOR UNRESERVED USE PENALTIES Effective: October 1, 2011, through September 30, 2016. Available: Within the marketing area served by the Western Area Power Administration (Western), Sierra Nevada Customer Service Region (SNR). Applicable: Western added this penalty rate for unreserved use of transmission service for the Central Valley Project, California-Oregon Transmission Project, and Pacific Alternating Current Intertie effective October 1, 2011. This penalty is applicable to point-to-point (PTP) transmission customers using transmission not reserved or in excess of reservation or network customers when they schedule delivery of off-system non-designated purchases using transmission capacity

3

Quantum oscillation of Rashba spin splitting in topological insulator Bi2Se3 induced by the quantum size effects of Pb adlayers  

Science Conference Proceedings (OSTI)

Basedon rst-principlescalculationswithindensityfunctionaltheory,we ndthatPbadlayerscaninduceagiantRashbaspinsplittinginthequantumwellstatesofanunderlyingBi2Se3 lm.AsthethicknessofthePbadlayersvaries,thedistancebetweenthePbadlayerandtheBi2Se3 lm,thechargedensityattheinterface,andthebindingbetweenthePbadlayersexhibitanoscillatorybehaviorduetothequantumsizeeffects,whichinturnmodulatesthemagnitudeoftheRashbaspinsplittingofthequantumwellstatesintheBi2Se3 lm.

Yang, Hong [Xiangtan University, Xiangtan Hunan, China; Peng, Xiangyang [Xiangtan University, Xiangtan Hunan, China; Wei, Xiaolin [Xiangtan University, Xiangtan Hunan, China; Liu, Wenliang [Xiangtan University, Xiangtan Hunan, China; Zhu, Wenguang [ORNL; Xiao, Di [ORNL; Stocks, George Malcolm [ORNL; Zhong, Jianxin [Xiangtan University, Xiangtan Hunan, China

2012-01-01T23:59:59.000Z

4

Disordered stoichiometric nanorods and ordered off-stoichiometric nanoparticles in n-type thermoelectric Bi?Te?.?Se?.?  

E-Print Network (OSTI)

N-type Bi?Te?.?Se?.? bulk thermoelectric materials with peak ZT values up to ?1 were examined by transmission electron microscopy and electron diffraction. Two nanostructural features were found: (i) a structural modulation ...

Carlton, Chris E.

5

Surface and substrate induced effects on thin films of the topological insulators Bi2Se3 and Bi2Te3  

Science Conference Proceedings (OSTI)

Based on van der Waals density functional calculations, we have studied few-quintuple-layer (QL) films of Bi2Se3 and Bi2Te3. The separation between the QLs near the surface is found to have a large increase after relaxation, whereas, the separation between the inner QLs is smaller and approaches the bulk value as the thickness grows, showing a two-dimensional to three-dimensional structural crossover. Accordingly, the surface Dirac cone of the Bi2Se3 film is evidently gapped for small thicknesses (two to four QLs), and the gap is reduced and, finally, is closed with the increasing thickness, agreeing well with the experiments. We further studied the substrate effect by investigating the Bi2Se3/graphene system. It is found that the underlying graphene induces a giant thickness-dependent Rashba splitting and Dirac point shift. Because Bi2Te3 films have smaller relative inter-QL expansion and stronger spin-orbit coupling, the topological features start to appear in the film as thin as two QLs in good accord with the experiments.

Liu, Wenliang [Xiangtan University, Xiangtan Hunan, China; Peng, Xiangyang [Xiangtan University, Xiangtan Hunan, China; Wei, Xiaolin [Xiangtan University, Xiangtan Hunan, China; Yang, Hong [Xiangtan University, Xiangtan Hunan, China; Stocks, George Malcolm [ORNL; Zhong, Jianxin [Xiangtan University, Xiangtan Hunan, China

2013-01-01T23:59:59.000Z

6

Emerging Weak Localization Effects on Topological Insulator-Insulating Ferromagnet (Bi_2Se_3-EuS) Interface  

E-Print Network (OSTI)

Thin films of topological insulator Bi_2Se_3 were deposited directly on insulating ferromagnetic EuS. Unusual negative magnetoresistance was observed near the zero field below the Curie temperature (T_C), resembling the weak localization effect; whereas the usual positive magnetoresistance was recovered above T_C. Such negative magnetoresistance was only observed for Bi_2Se_3 layers thinner than t~4nm, when its top and bottom surfaces are coupled. These results provide evidence for a proximity effect between a topological insulator and an insulating ferromagnet, laying the foundation for future realization of the half-integer quantized anomalous Hall effect in three-dimensional topological insulators.

Qi I. Yang; Merav Dolev; Li Zhang; Jinfeng Zhao; Alexander D. Fried; Elizabeth Schemm; Min Liu; Alexander Palevski; Ann F. Marshall; Subhash H. Risbud; Aharon Kapitulnik

2013-06-09T23:59:59.000Z

7

Effect of sintering in ball-milled K{sub 2}Bi{sub 8}Se{sub 13} thermoelectric nano-composites  

Science Conference Proceedings (OSTI)

K{sub 2}Bi{sub 8}Se{sub 13} has many attractive features for thermoelectric applications. Recently, K{sub 2}Bi{sub 8}Se{sub 13}-based nanocomposite materials, consisting of nano-crystalline, micro-crystalline and amorphous phases, have been fabricated based on powder technology techniques. The Seebeck coefficient has been enhanced while the thermal conductivity has been decreased presenting, thus, interesting behavior. The behavior of the materials under heat treatment conditions is now of interest, as the application of sintering process is necessary for the development of thermoelectric modules. In this work, the crystallization of the K{sub 2}Bi{sub 8}Se{sub 13}-based nano-composites is studied using Differential Scanning Calorimetry. The results show that crystallization follows a multiple-step process with different activation energies. The thermoelectric properties are also discussed in the range that crystallization occurs. - Graphical Abstract: {beta}-K{sub 2}Bi{sub 8}Se{sub 13}-based nanocomposites follow a multiple-step crystallization process. Highlights: Black-Right-Pointing-Pointer K{sub 2}Bi{sub 8}Se{sub 13}-based composites consisting of nanocrystalline and amorphous phases. Black-Right-Pointing-Pointer Sintering results multiple-step crystallization with variable activation energies. Black-Right-Pointing-Pointer Thermoelectric properties follow a step-like behavior during sintering. Black-Right-Pointing-Pointer Properties are attributed to the strain relaxation, nucleation and grain growth.

Hatzikraniotis, E. [Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece)] [Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece); Ioannou, M. [Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia (Cyprus)] [Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia (Cyprus); Chrissafis, K. [Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece)] [Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece); Chung, D.Y. [Materials Science Division, Argonne National Laboratory, Argonne, IL 60439 (United States)] [Materials Science Division, Argonne National Laboratory, Argonne, IL 60439 (United States); Paraskevopoulos, K.M. [Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece)] [Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece); Kyratsi, Th., E-mail: kyratsi@ucy.ac.cy [Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia (Cyprus)

2012-09-15T23:59:59.000Z

8

Reversible tuning of the surface state in a pseudobinary Bi2(Te-Se)3 topological insulator  

SciTech Connect

We use angle-resolved photoemission spectroscopy to study a nontrivial surface state in a pseudobinary Bi2Te2.8Se0.2 topological insulator. We show that, unlike previously studied binaries, this is an intrinsic topological insulator with the conduction bulk band residing well above the chemical potential. Our data indicate that under a good vacuum condition there are no significant aging effects for more than two weeks after cleaving. We also demonstrate that the shift of the Kramers point at low temperature is caused by UV-assisted absorption of molecular hydrogen. Our findings pave the way for applications of these materials in devices and present an easy scheme to tune their properties.

Jiang, Rui; Wang, Lin-Lin; Huang, Mianliang; Dhaka, Rajendra S.; Johnson, Duane D.; Lograsso, Thomas A.; Kaminski, Adam

2012-08-10T23:59:59.000Z

9

Common Origin of the Circular-dichroism Pattern in ARPES of SrTiO3 and CuxBi2Se3  

SciTech Connect

We investigate circular dichroism in the angular distribution (CDAD) of photoelectrons from SrTiO{sub 3}:Nb and Cu{sub x}Bi{sub 2}Se{sub 3} recorded by 7-eV laser ARPES. In addition to the well-known node that occurs in CDAD when the incidence plane matches the mirror plane of the crystal, we show that another type of node occurs when the mirror plane of the crystal is vertical to the incidence plane and the electronic state is two dimensional. The flower-shaped CDAD's occurring around the Fermi level of SrTiO{sub 3}:Nb and around the Dirac point of Cu{sub x}Bi{sub 2}Se{sub 3} are explained on equal footings. A surface-state-to-surface-resonance transition is indicated for the topological state of Cu{sub x}Bi{sub 2}Se{sub 3}.

Bell, Christopher

2011-08-19T23:59:59.000Z

10

Anisotropy analysis of thermoelectric properties of Bi{sub 2}Te{sub 2.9}Se{sub 0.1} prepared by SPS method  

Science Conference Proceedings (OSTI)

The n-type Bi{sub 2}Te{sub 2.9}Se{sub 0.1} materials were synthesized by the direct fusion technique. The polycrystalline samples were fabricated by the uniaxial pressing of powders in spark plasma sintering (SPS) apparatus. The materials were subjected to the heat treatment in H{sub 2}-Ar atmosphere at 470 K for 24 h. The influence of preparation conditions on the anisotropy of electrical and thermal properties was thoroughly studied for the direction perpendicular and parallel to the pressing force. The microstructure and the chemical composition of both types of samples were examined using a scanning microscope (SEM) equipped with an X-ray energy dispersion detector (EDX). The XRD method was applied for the phase analysis of materials, as well as, for determination of preferred orientation of Bi{sub 2}Te{sub 2.9}Se{sub 0.1} grains. The Seebeck coefficient distribution was studied by the scanning thermoelectric microprobe (STM). Temperature dependences of thermoelectric properties (thermal and electrical conductivities, Seebeck coefficient) were measured in the temperature from 300 K to 550 K. The statistical analysis of results has shown strong influence of pressing force direction both on structural and transport properties. The applied heat treatment of materials significantly improves their thermoelectric figure of merit. Particularly, it was found that annealing in H2-Ar atmosphere leads to enhancement of the ZT three times up to {approx}0.7 at 370 K in perpendicular direction to the pressing force.

Zybala, Rafal; Wojciechowski, Krzysztof T. [Thermoelectric Research Laboratory, Department of Inorganic Chemistry, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Av. Mickiewicza 30, 30-059, Cracow (Poland)

2012-06-26T23:59:59.000Z

11

High quality ultrathin Bi{sub 2}Se{sub 3} films on CaF{sub 2} and CaF{sub 2}/Si by molecular beam epitaxy with a radio frequency cracker cell  

Science Conference Proceedings (OSTI)

We report a method to fabricate high quality Bi{sub 2}Se{sub 3} thin films using molecular beam epitaxy with a radio frequency cracker cell as an atomic selenium source. With Se-to-Bi ratios close to exact stoichiometry, optimal layer-by-layer growth of high quality Bi{sub 2}Se{sub 3} thin films with smooth surfaces has been achieved on CaF{sub 2}(111) substrates and Si(111) substrates with a thin epitaxial CaF{sub 2} buffer layer (CaF{sub 2}/Si). Transport measurements show a characteristic weak-antilocalization magnetoresistance in all the films, with the emergence of a weak-localization contribution in the ultrathin film limit. Quantum oscillations, attributed to the topological surface states have been observed, including in films grown on CaF{sub 2}/Si.

Zhang Li; Dolev, Merav [Department of Applied Physics, Stanford University, Stanford, California 94305 (United States); Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305 (United States); Hammond, Robert [Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305 (United States); Liu Min [Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305 (United States); Department of Physics, Stanford University, Stanford, California 94305 (United States); Palevski, Alexander [School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv (Israel); Kapitulnik, Aharon [Department of Applied Physics, Stanford University, Stanford, California 94305 (United States); Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305 (United States); Department of Physics, Stanford University, Stanford, California 94305 (United States)

2012-10-08T23:59:59.000Z

12

Bi-2212 and Bi-2223 wire development  

SciTech Connect

The results of innovative processing of Bi-2212 by isothermal melt processing and by controlled oxygen pressure cooling yield improved properties over the conventional routes. The addition of large grains of Ag has resulted in improved core/interface geometry and better performance in Bi-2212 and Bi-2223. A deformation processing study of Bi-2223 showed the effects of sheath material, relative core thickness, and reduction per pass on core/interface uniformity.

Willis, J.O.; Ray, R.D. II; Holesinger, T.G. [and others

1995-12-01T23:59:59.000Z

13

S Se  

NLE Websites -- All DOE Office Websites (Extended Search)

Se Se er rp pe en nt ti in ne e S St ty yl le e C Co oi il l W Wi in nd di in ng gs s f fo or r B BE EP PC C- -I II I I IR R M Ma ag gn ne et t P Pr ro od du uc ct ti io on n V Viid de eo oc co on nffe er re en nc ce e B Be ettw we ee en n IIH HE EP P a an nd d B BN NL L S Sc ch he ed du ulle ed d ffo or r M Ma ar rc ch h 3 3,, 2 20 00 04 4 o on n B BE EP PC C- -IIII S SC C M Ma ag gn ne ett P Pr ro od du uc cttiio on n.. Presented by Brett Parker/BNL - SMD First SCQ Production Coil Winding 7 0 0 Z (mm) 300 200 100 θ (deg.) 5 0 0 Z (mm) θ (deg.) O Or ri ig gi in na al l D Do ou ub bl le e- -L La ay ye er r B BE EP PC C- -I II I C Co oi il l W Wi in nd di in ng g P Pa at tt te er rn ns s f fo or r S SC CB B a an nd d S SC CQ Q. . The plan had been to wind one coil pole and then stop winding to fill in gaps with G10 before adding new substrate and then continue winding the same pole in the second layer. This was maybe not so bad for SCB where we would have had to stop/start twice but for the four double-layer SCQ we would have had sixteen stop/starts

14

Bi-Ca (Bismuth - Calcium)  

Science Conference Proceedings (OSTI)

Bi-Ca crystallographic data...Bi-Ca crystallographic data Phase Composition, wt% Ca Pearson symbol Space group (Bi) 0 hR 2 R m Bi 3 Ca 6 ? ? Bi 10 Ca 11 17.4 tI 84 I 4/ mmm Bi 3 Ca 5 24.2 oP 32 Pnma BiCa 2 27.8 tI 12 I 4/ mmm (αCa) 100 cF 4 Fm m (βCa) 100 cI 2 Im m...

15

Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, 2013-SE-1401) |  

NLE Websites -- All DOE Office Websites (Extended Search)

Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, 2013-SE-1401) Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, 2013-SE-1401) November 26, 2012 DOE ordered Midea America Corp., Hefei Hualing Co., Ltd., and China Refrigeration Industry Co., Ltd., to pay a $4,579,949 ($4,562,838 plus one percent interest) civil penalty after finding Midea had manufactured and distributed in commerce in the U.S. a large quantity of basic models HD-l46F, HS-390C, UL-WD145-D, and UL-WD195-D of noncompliant refrigerator-freezers and freezers. The Order adopted a Compromise Agreement, which reflected settlement terms between DOE and Midea. Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, 2013-SE-1401) More Documents & Publications Midea: Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404)

16

BI Dashboards and Answers | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Dashboards and Answers Dashboards and Answers BI Dashboards and Answers March 5, 2014 8:30AM EST to March 6, 2014 4:30PM EST Registration link: iPortal Training Registration Course Type: Classroom Course Location: Germantown/Cloverleaf, DC Course Description: The IDW BI Answers and Dashboard training class is a 2 day class designed to introduce users to the IDW BI reports and ad-hoc report writer. This class covers running standard pre-programmed reports as well as creating your own - from scratch or by modifying existing reports. Topics covered include: * Overview of iPortal * Overview of IDW and BI * IDW/STARS Terminology * Data in IDW * IDW BI standard reports * Downloading BI reports to Excel * Developing/modifying BI reports * Creating your own and group dashboards * Sharing reports in BI

17

Bi-Stable Optical Actuator  

DOE Patents (OSTI)

The present invention is a bi-stable optical actuator device that is depowered in both stable positions. A bearing is used to transfer motion and smoothly transition from one state to another. The optical actuator device may be maintained in a stable position either by gravity or a restraining device.

Holdener, Fred R.; Boyd, Robert D.

1999-10-15T23:59:59.000Z

18

Bi-stable optical actuator  

DOE Patents (OSTI)

The present invention is a bi-stable optical actuator device that is depowered in both stable positions. A bearing is used to transfer motion and smoothly transition from one state to another. The optical actuator device may be maintained in a stable position either by gravity or a restraining device.

Holdener, Fred R. (Tracy, CA); Boyd, Robert D. (Livermore, CA)

2000-01-01T23:59:59.000Z

19

Cs-Se (Cesium - Selenium)  

Science Conference Proceedings (OSTI)

Cs-Se crystallographic data...Cs-Se crystallographic data Phase Composition, wt% Se Pearson symbol Space group (Cs) 0 cI 2 Im m Cs 2 Se 22.9 oP 12 Pnma Cs 3 Se 2 28 ? ? Cs 5 Se 4 32.2 ? ? CsSe 37.3 ? ? Cs 2 Se 3 47 oC 20 Cmc 2 1 Cs 2 Se 5 59.7 oP 28 P 2 1 2 1 2 1 (Se) 100 hP 3 P 3 1 2 1 High-pressure phase Cs 2 Se 22.9 oF 24 Fdd 2...

20

Midea: Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404) |  

NLE Websites -- All DOE Office Websites (Extended Search)

Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404) Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404) Midea: Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404) November 20, 2012 DOE alleged in a Notice of Proposed Civil Penalty that Midea America Corp., Hefei Hualing Co., Ltd., and China Refrigeration Industry Co., Ltd. manufactured and distributed noncompliant refrigerator-freezers and freezers in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Midea: Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404)

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Bi-Directional Fast Charging Study Report  

NLE Websites -- All DOE Office Websites (Extended Search)

and software infrastructure needed to demonstrate the possibility of utilizing battery power in plug-in hybrid electric vehicles and electric vehicles with a bi-directional...

22

BiOctane | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Name BiOctane Place Worcester, Massachusetts Product Biofuel start-up planning to design and develop a biodiesel and ethanol refinery. References...

23

Midea: Amended Noncompliance Determination (2010-SE-0110, 2012-SE-1402) |  

NLE Websites -- All DOE Office Websites (Extended Search)

Amended Noncompliance Determination (2010-SE-0110, Amended Noncompliance Determination (2010-SE-0110, 2012-SE-1402) Midea: Amended Noncompliance Determination (2010-SE-0110, 2012-SE-1402) November 26, 2012 DOE issued an Amended Notice of Noncompliance Determination to Midea America Corp., Hefei Hualing Co., Ltd., and China Refrigeration Industry Co., Ltd. finding that basic model HD-146F, a refrigerator-freezer, and basic model HS-390C, a freezer, do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Midea must immediately notify each person (or company) to whom Midea distributed the noncompliant products that the product does not meet Federal standards. In addition, Midea must provide to DOE documents and records showing the number of units Midea distributed

24

Solon SE | Open Energy Information  

Open Energy Info (EERE)

Berlin, Germany Zip D-12489 Sector Solar Product Manufacturer of PV modules and tracking systems, and integrator of solar systems. References Solon SE1 LinkedIn Connections...

25

L19 Different Bi2Se3 Thermoelectric Nanostructures Prepared by ...  

Science Conference Proceedings (OSTI)

D14 Gold Nanoparticles in Red Ruby Glasses Used for Decoration in Thailand D15 Soft Magnetic Properties of Nanocrystalline Fe-based P/M Cores Mixed...

26

Morphological Features of Topological Insulator Bi2Se3 Thin Film ...  

Science Conference Proceedings (OSTI)

Atomic-scale 3D Crystallographic Information Obtained from Atom Probe .... What Can We Learn from Measurements of Li-ion Battery Single Particles?

27

Tuning carrier type and density in Bi2Se3 by Ca-doping  

E-Print Network (OSTI)

was observed in electrical resistivity measurements of Ca-We have performed electrical resistivity measurements on ?vesamples. The electrical resistivity varies signi?cantly for

2010-01-01T23:59:59.000Z

28

An introduction to ML(n)BiCGStab  

E-Print Network (OSTI)

ML(n)BiCGStab is a Krylov subspace method for the solution of large, sparse and non-symmetric linear systems. In theory, it is a method that lies between the well-known BiCGStab and GMRES/FOM. In fact, when n = 1, ML(1)BiCGStab is BiCGStab and when n = N, ML(N)BiCGStab is GMRES/FOM where N is the size of the linear system. Therefore, ML(n)BiCGStab is a bridge that connects the Lanczos-based BiCGStab and the Arnoldi-based GMRES/FOM. In computation, ML(n)BiCGStab can be much more stable and converge much faster than BiCGStab when a problem with ill-condition is solved. We have tested ML(n)BiCGStab on the standard oil reservoir simulation test data called SPE9 and found that ML(n)BiCGStab reduced the total computational time by more than 60% when compared to BiCGStab. Tests made on the data from Matrix Market also support the superiority of ML(n)BiCGStab over BiCGStab. Because of the O(N^2) storage requirement in the full GMRES, one has to adopt a restart strategy to get the storage under control when GMRES is i...

Yeung, Man-Chung

2011-01-01T23:59:59.000Z

29

Growth of high Bi concentration GaAs{sub 1-x}Bi{sub x} by molecular beam epitaxy  

Science Conference Proceedings (OSTI)

The incorporation of Bi is investigated in the molecular beam epitaxy growth of GaAs{sub 1-x}Bi{sub x}. Bi content increases rapidly as the As{sub 2}:Ga flux ratio is lowered to 0.5 and then saturates for lower flux ratios. Growth under Ga and Bi rich conditions shows that Bi content increases strongly with decreasing temperature. A model is proposed where Bi from a wetting layer incorporates through attachment to Ga-terminated surface sites. The weak Ga-Bi bond can be broken thermally, ejecting Bi back into the wetting layer. Highly crystalline films with up to 22% Bi were grown at temperatures as low as 200 Degree-Sign C.

Lewis, R. B. [Department of Physics and Astronomy, University of British Columbia, V6T 1Z1 Vancouver (Canada); Department of Electrical and Computer Engineering, University of Victoria, V8W 3P6 Victoria (Canada); Masnadi-Shirazi, M. [Department of Electrical and Computer Engineering, University of Victoria, V8W 3P6 Victoria (Canada); Department of Electrical and Computer Engineering, University of British Columbia, V6T 1Z4 Vancouver (Canada); Tiedje, T. [Department of Electrical and Computer Engineering, University of Victoria, V8W 3P6 Victoria (Canada)

2012-08-20T23:59:59.000Z

30

Roanoke River Basin Bi-State Commission (Multiple States)  

Energy.gov (U.S. Department of Energy (DOE))

The Roanoke River Basin Bi-State Commission was established as a bi-state commission composed of members from the Commonwealth of Virginia and the State of North Carolina.The purpose of the...

31

High energy proton irradiation induced pinning centers in Bi-2212 and Bi-2223 superconductors  

Science Conference Proceedings (OSTI)

Bi-2212 single crystals and Bi-2223/Ag-sheathed tapes were irradiated with high energy protons. TEM images reveal the production of randomly oriented (splayed) columnar defects with an amorphous core of {approximately}10 nm diameter caused by the fissioning of Bi nuclei. The critical current density J{sub c} and irreversibility line both substantially increased with the proton dose for both crystals and tapes, especially for the magnetic field parallel to the c axis. An irradiated tape had a J{sub c} value {approximately}100 times greater than that of an unirradiated one at 1 T and 75 K.

Willis, J.O.; Safar, H.; Cho, J.H. [and others

1995-12-01T23:59:59.000Z

32

Anisotropy in CdSe quantum rods  

E-Print Network (OSTI)

in synthesizing monodisperse CdSe nanorods has allowed us toout the phase diagram of the CdSe nanorod solution in order2. Controlled Synthesis of CdSe Nanorods 2.1 Introduction In

Li, Liang-shi

2003-01-01T23:59:59.000Z

33

Systems and methods for bi-directional energy delivery with galvanic isolation  

DOE Patents (OSTI)

Systems and methods are provided for bi-directional energy delivery. A charging system comprises a first bi-directional conversion module, a second bi-directional conversion module, and an isolation module coupled between the first bi-directional conversion module and the second bi-directional conversion module. The isolation module provides galvanic isolation between the first bi-directional conversion module and the second bi-directional conversion module.

Kajouke, Lateef A.

2013-06-18T23:59:59.000Z

34

Green route synthesis of high quality CdSe quantum dots for applications in light emitting devices  

SciTech Connect

Investigation was made on light emitting diodes fabricated using CdSe quantum dots. CdSe quantum dots were synthesized chemically using olive oil as the capping agent, instead of toxic phosphine. Room temperature photoluminescence investigation showed sharp 1st excitonic emission peak at 568 nm. Bi-layer organic/inorganic (P3HT/CdSe) hybrid light emitting devices were fabricated by solution process. The electroluminescence study showed low turn on voltage ({approx}2.2 V) .The EL peak intensity was found to increase by increasing the operating current. - Graphical abstract: Light emitting diode was fabricated using CdSe quantum dots using olive oil as the capping agent, instead of toxic phosphine. Bi-layer organic/inorganic (P3HT/CdSe) hybrid light emitting device shows strong electroluminescence in the range 630-661 nm. Highlights: Black-Right-Pointing-Pointer CdSe Quantum dots were synthesized using olive oil as the capping agent. Black-Right-Pointing-Pointer Light emitting device was fabricated using CdSe QDs/P3HT polymer heterojunction. Black-Right-Pointing-Pointer The I-V characteristics study showed low turn on voltage at {approx}2.2 V. Black-Right-Pointing-Pointer The EL peak intensity increases with increasing the operating current.

Bera, Susnata, E-mail: susnata.bera@gmail.com [Department of Physics and Meteorology, Indian Institute of Technology Kharagpur, Kharagpur 721302 (India); Singh, Shashi B. [Department of Physics and Meteorology, Indian Institute of Technology Kharagpur, Kharagpur 721302 (India); Ray, S.K., E-mail: physkr@phy.iitkgp.ernet.in [Department of Physics and Meteorology, Indian Institute of Technology Kharagpur, Kharagpur 721302 (India)

2012-05-15T23:59:59.000Z

35

THERMODYNAMIC PROPERTIES OF SeS  

E-Print Network (OSTI)

Korenev, et al. used the CdS-CdSe and ZnS-ZnSe systemsto measure. For the CdS-CdSe system, Korenev, et al. wereVapor pressures for CdS and CdSe are better established. A

Huang, M.-D.

2011-01-01T23:59:59.000Z

36

Business intelligence success: The roles of BI capabilities and decision environments  

Science Conference Proceedings (OSTI)

This study examines the role of the decision environment in how well business intelligence (BI) capabilities are leveraged to achieve BI success. We examine the decision environment in terms of the types of decisions made and the information processing ... Keywords: BI, BI capabilities, BI success, Business intelligence, Decision environment, PLS

Yk I??K; Mary C. Jones; Anna Sidorova

2013-01-01T23:59:59.000Z

37

THERMODYNAMIC PROPERTIES OF SeS  

E-Print Network (OSTI)

rights . ;, a 9 U (t,) -iii- THERMODYNAMIC PROPERTIES OF SeSSeS gas. only estimated thermodynamic data are Since groupinterest to study the thermodynamic properties of SeS in

Huang, M.-D.

2011-01-01T23:59:59.000Z

38

The contrastive research in the photocatalytic activity of BiOBr synthesized by different reactants  

Science Conference Proceedings (OSTI)

BiOBr nanoplates, marked as ?-BiOBr and ?-BiOBr, were synthesized via hydrothermal method using cetylpyridinium bromide (CPB) and NaBr as reactants, respectively. X-Ray Diffraction (XRD), transmission electron microscope (TEM), N2 ...

Wang Ling-Li; Ma Wan-Hong; Wang Shu-Lian; Zhang Yu; Jia Man-Ke; Li Rui-Ping; Zhang Ai-Qing; Huang Ying-Ping

2012-01-01T23:59:59.000Z

39

Engineered Products: Noncompliance Determination (2012-SE-5401) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2012-SE-5401) Noncompliance Determination (2012-SE-5401) Engineered Products: Noncompliance Determination (2012-SE-5401) July 26, 2012 DOE issued a Notice of Noncompliance Determination to Engineered Products Company (EPCO) finding that basic model 15701 of metal halide lamp fixture does not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. EPCO must immediately notify each person (or company) to whom EPCO distributed the noncompliant product that the product does not meet Federal standards. Engineered Products: Noncompliance Determination (2012-SE-5401) More Documents & Publications Engineered Products: Proposed Penalty (2012-SE-5401) Engineered Products: Order (2012-SE-5401) Teddico: Noncompliance Determination (2012-SE-5409

40

Effective suppression of Sn-58Bi/Cu interfacial reactions with minor ...  

Science Conference Proceedings (OSTI)

On-Site Speaker (Planned), Trong Lan Nguyen. Abstract Scope, Overgrowth of the ?-Cu6Sn5 layer between Sn-58 wt.%Bi (Sn-58Bi)...

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Bi-Directional Fast Charging Study Report  

DOE Green Energy (OSTI)

This report details the hardware and software infrastructure needed to demonstrate the possibility of utilizing battery power in plug-in hybrid electric vehicles (PHEVs) and electric vehicles (EVs) with a bi directional fast charger to support/offset peak building loads. This document fulfills deliverable requirements for Tasks 1.2.1.2, 1.2.1.3, and 1.2.1.4 of Statement of Work (SOW) No.5799 for Electric Transportation Engineering Corporation, now ECOtality North America (NA) support for the Idaho National Laboratory (INL).

Tyler Gray

2012-02-01T23:59:59.000Z

42

New and Underutilized Technology: Bi-level Stairwell Lighting | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stairwell Lighting Stairwell Lighting New and Underutilized Technology: Bi-level Stairwell Lighting October 7, 2013 - 8:53am Addthis The following information outlines key deployment considerations for bi-level stairwell lighting within the Federal sector. Benefits Bi-level stairwell lighting uses integral occupancy sensor motion detectors to monitor the stairwell. When occupancy is detected, the lights go to full level. When the space has been vacated after a programmed period, the fixture goes to a minimum level. Application Bi-level stairwell lighting is applicable in most multi-story buildings. Key Factors for Deployment Bi-level stairwell lighting is a good technology to implement concurrently with an overall building lighting improvement project. Ranking Criteria Federal energy savings, cost-effectiveness, and probability of success are

43

Extreme solid state refrigeration using nanostructured Bi-Te alloys.  

SciTech Connect

Materials are desperately needed for cryogenic solid state refrigeration. We have investigated nanostructured Bi-Te alloys for their potential use in Ettingshausen refrigeration to liquid nitrogen temperatures. These alloys form alternating layers of Bi{sub 2} and Bi{sub 2}Te{sub 3} blocks in equilibrium. The composition Bi{sub 4}Te{sub 3} was identified as having the greatest potential for having a high Ettingshausen figure of merit. Both single crystal and polycrystalline forms of this material were synthesized. After evaluating the Ettingshausen figure of merit for a large, high quality polycrystal, we simulated the limits of practical refrigeration in this material from 200 to 77 K using a simple device model. The band structure was also computed and compared to experiments. We discuss the crystal growth, transport physics, and practical refrigeration potential of Bi-Te alloys.

Lima Sharma, Ana L. (San Jose State University, San Jose, CA); Spataru, Dan Catalin; Medlin, Douglas L.; Sharma, Peter Anand; Morales, Alfredo Martin

2009-09-01T23:59:59.000Z

44

Estimation of selenium (Se) intake from Se in serum, whole blood, toenails, or urine  

SciTech Connect

Because Se content of food varies widely, estimates of intake based on Se status are more accurate than those based on food composition tables. 77 free-living subjects from South Dakota and Wyoming, where the range of Se intake was large, provided blood, toenails, and 24-hour urines. Se intake, measured by chemical analysis of 4-8 days of duplicate-plate food composites from each subject, was estimated on the basis of the Se indices. To predict the natural logarithm of Se intake from serum Se the best fit was provided by : {minus}0.465 + 0.568{asterisk}SSe. Addition of lean body mass (LBM (kg)) and energy intake (EI (MJ)) to the model markedly improved the fit. Models based on Se in blood or urine gave slightly better estimates than those based on toenail Se. Consideration of data in addition to indices of Se status resulted in improved estimates of intake.

Longnecker, M.P.; Taylor, P.R.; Levander, O.A.; Flack, V.; Veillon, C.; McAdam, P.A.; Patterson, K.Y.; Holden, J.; Stampfer, M.J.; Morris, J.S.; Willett, W.C. (Univ. of California, Los Angeles (United States) NCI, Rockville, MD (United States) USDA, Beltsville, MD (United States) Harvard Univ., Boston, MA (United States) Univ. of Missouri, Columbia (United States))

1991-03-11T23:59:59.000Z

45

SeWave | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » SeWave Jump to: navigation, search Name SeWave Place Denmark Zip FO-110 Product Denmark-based 50:50 JV between UK's Wavegen and Faroese electricity company SEV to to design and build a tunnelled demonstration wave power plant in the Faroes Islands. References SeWave[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This company is listed in the Marine and Hydrokinetic Technology Database. This article is a stub. You can help OpenEI by expanding it. SeWave is a company located in Denmark . References ↑ "SeWave"

46

Improving combustion stability in a bi-fuel engine  

Science Conference Proceedings (OSTI)

This article describes how a new strategy for ignition timing control can reduce NOx emissions from engines using CNG and gasoline. Until a proper fueling infrastructure is established, a certain fraction of vehicles powered by compressed natural gas (CNG) must have bi-fuel capability. A bi-fuel engine, enjoying the longer range of gasoline and the cleaner emissions of CNG, can overcome the problem of having few CNG fueling stations. However, bi-fuel engines must be optimized to run on both fuels since low CNG volumetric efficiency causes power losses compared to gasoline.

NONE

1995-06-01T23:59:59.000Z

47

Electron Hall Mobility in GaAsBi  

Science Conference Proceedings (OSTI)

We present measurements of the electron Hall mobility in n-type GaAs{sub 1-x}Bi{sub x} epilayers. We observed no significant degradation in the electron mobility with Bi incorporation in GaAs, up to a concentration of 1.2%. At higher Bi concentration ({ge} 1.6%) some degradation of the electron mobility was observed, although there is no apparent trend. Temperature dependent Hall measurements of the electron mobility suggest neutral impurity scattering to be the dominant scattering mechanism.

Kini, R. N.; Bhusal, L.; Ptak, A. J.; France, R.; Mascarenhas, A.

2009-01-01T23:59:59.000Z

48

ZnSe light?emitting diodes  

Science Conference Proceedings (OSTI)

We report the successful fabrication of ZnSe p?n junction light?emitting diodes in which Li and Cl are used as p?type and n?type dopants

J. Ren; K. A. Bowers; B. Sneed; D. L. Dreifus; J. W. Cook Jr.; J. F. Schetzina; R. M. Kolbas

1990-01-01T23:59:59.000Z

49

Lutron Electronics: Noncompliance Determination (2012-SE-3796...  

NLE Websites -- All DOE Office Websites (Extended Search)

(2012-SE-3796) June 5, 2013 DOE issued a Notice of Noncompliance Determination to Lutron Electronics Co., Inc. finding that a variety of Class A external power supply basic models...

50

Exciton spectroscopy on single CdSe/ZnSe quantum dot photodiodes  

Science Conference Proceedings (OSTI)

We have investigated the properties of neutral and charged excitons in single CdSe/ZnSe QD photodiodes by @m-photoluminescence spectroscopy. By applying a bias voltage, we have been able to control the number of electrons in a single QD by shifting the ... Keywords: CdSe quantum dots, Photodiode, Stark effect

S. Michaelis de Vasconcellos; A. Pawlis; C. Arens; M. Panfilova; A. Zrenner; D. Schikora; K. Lischka

2009-02-01T23:59:59.000Z

51

Melt processing of Bi--2212 superconductors using alumina  

DOE Patents (OSTI)

Superconducting articles and a method of forming them, where the superconducting phase of an article is Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.y (Bi-2212). Alumina is combined with Bi-2212 powder or Bi-2212 precursor powder and, in order to form an intimate mixture, the mixture is melted and rapidly cooled to form a glassy solid. The glassy solid is comminuted and the resulting powder is combined with a carrier. An alternative to melting is to form the mixture of nanophase alumina and material having a particle size of less than about 10 microns. The powder, with the carrier, is melt processed to form a superconducting article.

Holesinger, Terry G. (Los Alamos, NM)

1999-01-01T23:59:59.000Z

52

Electrical Properties and Sintering Characteristics of Bi-Doped ...  

Science Conference Proceedings (OSTI)

... Properties and Sintering Characteristics of Bi-Doped Gd2Zr2O7 Powders. Author(s), Jose A. Diaz-Guillen, Esmeralda Mendoza-Mendoza, Antonio F. Fuentes.

53

Geochemistry of the Yutangba Se deposit in western Hubei, China  

Science Conference Proceedings (OSTI)

In the Se ores and abandoned stone coal pile at the Yutangba Se deposit there ... of Se minerals due to secondary enrichment of selenium in the stone coal...

54

Phase stability and grain growth in an Ag/Bi-2223 composite conductor prepared using fine-grained Bi-2223 as a precursor.  

SciTech Connect

We have investigated the stability and microstructural transformability of the Bi-2223 phase in a silver-sheathed monofilament composite tape fabricated using fine-grained Bi{sub 1.7}Pb{sub 0.3}Sr{sub 1.9}Ca{sub 2.0}-Cu{sub 3.0}O{sub y} (Bi-2223) as the precursor powder. The fully formed Bi-2223 precursor was prepared using established procedures. The purpose of this study was to explore the prospects for growing textured, large-grain-size Bi-2223 from the fine-grained precursor by process parameter perturbations. These perturbations included thermal ramp up variations, programmed heat treatment temperature and oxygen pressure fluctuations, and parameter manipulations during cool-down. Our results show that the types of heat treatments used in conventional oxide-powder-in-tube (OPIT) processing do not facilitate Bi-2223 grain growth when the precursor powder is preconcerted Bi-2223. We also observed that the Bi-2223 partially. decomposed during conventional thermal ramp-up in 0.075 atm O{sub 2}, but that this decomposition can be inhibited by ramping up in a reduced oxygen pressure. A pathway was found for back-reacting the fine-grained Bi-2223 (to Bi-2212, Bi-2201 and nonsuperconducting secondary phases), then reforming large-grained Bi-2223 in a colony microstructure having some distinct differences from that produced during conventional OPIT processing.

Merchant, N. N.

1998-09-17T23:59:59.000Z

55

I2SE | Open Energy Information  

Open Energy Info (EERE)

I2SE I2SE Jump to: navigation, search Name I2SE Place Leipzig, Germany Zip 4103 Sector Efficiency Product IT company providing solutions for energy efficiency and data transmission. Coordinates 51.3452°, 12.38594° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.3452,"lon":12.38594,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

56

Goodman Manufacturing: Noncompliance Determination (2011-SE-4301) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2011-SE-4301) Noncompliance Determination (2011-SE-4301) Goodman Manufacturing: Noncompliance Determination (2011-SE-4301) October 17, 2011 DOE issued a Notice of Noncompliance Determination to Goodman Manufacturing finding that model CPC180XXX3BXXXAA (CPC180*) of commercial package air conditioner does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing . Goodman must immediately notify each person (or company) to whom Goodmany distributed the noncompliant products that the product does not meet Federal standards. In addition, Goodman must provide to DOE documents and records showing the number of units Goodman distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil

57

Summit Manufacturing: Noncompliance Determination (2010-SE-0303) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Summit Manufacturing: Noncompliance Determination (2010-SE-0303) Summit Manufacturing: Noncompliance Determination (2010-SE-0303) Summit Manufacturing: Noncompliance Determination (2010-SE-0303) May 28, 2010 DOE issued a Notice of Noncompliance Determination to Summit Manufacturing, Inc. finding that 4SHP13LE136P + 15001+CA042A964+TDR basic model, a split-system air conditioning heat pump with a heat pump coil, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. Summit must immediately notify each person (or company) to whom Summit distributed the noncompliant products that the product does not meet Federal standards. In addition, Summit must provide to DOE documents and records showing the number of units Summit distributed and to whom. The manufacturer and/or

58

KTH Mechanics SE-100 44 Stockholm, Sweden  

E-Print Network (OSTI)

KTH Mechanics SE-100 44 Stockholm, Sweden Activity Report 2006 Contents 1. Introduction 2. 3 Publications and conference presentations during 2006 5. 4 Seminars at Mechanics, KTH 1 #12 of Mechanics, KTH during the year of 2006. More information may be found at the department web site http

Haviland, David

59

KTH Mechanics SE-100 44 Stockholm, Sweden  

E-Print Network (OSTI)

KTH Mechanics SE-100 44 Stockholm, Sweden Activity Report 2005 Contents 1. Introduction 2. 3 Publications and conference presentations during 2005 5. 4 Seminars at Mechanics, KTH 1 #12 of Mechanics, KTH during the year of 2005. More information may be found at the department web site http

Haviland, David

60

KTH Mechanics SE-100 44 Stockholm, Sweden  

E-Print Network (OSTI)

KTH Mechanics SE-100 44 Stockholm, Sweden Activity Report 2009 Contents 1. Introduction 2 a short overview of the structure and activities at the depart- ment of Mechanics, KTH during the year courses in mechanics, fluid mechanics and structural mechanics given for students and programmes from

Haviland, David

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Bright CdSe quantum dot inserted in single ZnSe nanowires  

Science Conference Proceedings (OSTI)

We report the evidence of CdSe quantum dot (QD) insertion in single defect-free ZnSe nanowire. These nanowires have been grown by molecular beam epitaxy in vapour-liquid-solid growth mode catalysed with gold particles. We developed a two-step process ... Keywords: PL, Antibunching, CdSe, Correlation measurement, Micro photoluminescence, Polarisation, Single NW, Single QD, Single nanowire, Single nanowire heterostructures, Single quantum dot, TRPL, Time-resolved photoluminescence, Two-step process, ZnSe

A. Tribu; G. Sallen; T. Aichele; C. Bougerol; R. Andr; J. P. Poizat; S. Tatarenko; K. Kheng

2009-02-01T23:59:59.000Z

62

Phase transition on CdSe thin films by changing the volume concentration of Se  

Science Conference Proceedings (OSTI)

In this work CdSe thin films were grown by chemical bath deposition (CBD)6 onto glass substrate with approximately 2000 thickness. The samples have been prepared by changing the volume concentration of the solution in the range of 5-45 ... Keywords: CdSe, thin films, chemical bath, phase transitions, semiconductors

M. Rubn; J. I. Cortez; H. Jurez; E. Rosendo; T. Daz; G. Garca Salgado; I. Villaverde; R. Lozada-Morales; O. Portillo-Moreno; O. Zelaya-Ngel

2007-07-01T23:59:59.000Z

63

The Periodic Table of Elements C  

NLE Websites -- All DOE Office Websites (Extended Search)

Atomic Number Chemical Symbol Atomic Weight Chemical Name = Solid at room temperature = Liquid at room temperature = Gas at room temperature = Radioactive = Artificially Made KEY METALS NON-METALS 12.011 http://education.jlab.org/ Last revised on April 3, 2013 [294] H Li Na K Be Mg Ca Sc Ti Rb Cs Fr Sr Y Ba Ra Zr Hf Rf V Nb Ta Db Cr Mo W Sg Mn Tc Re Bh Fe Ru Os Hs Co Rh Ir Mt Ni Pd Pt Ds Cu Ag Au Rg Zn Cd Hg Cn Ga In Tl Uut Ge Sn Pb Fl As Sb Bi Uup Se Te Po Lv Br I At Uus Kr Xe Rn Uuo La Ac Ce Th Pr Pa Nd U Pm Np Sm Pu Eu Am Gd Cm Tb Bk Dy Cf Ho Es Er Fm Tm Md Yb Yb No Lu Lr B Al C Si N P O S F Cl Ne He Ar HYDROGEN LITHIUM SODIUM POTASSIUM BERYLLIUM MAGNESIUM CALCIUM SCANDIUM TITANIUM RUBIDIUM CESIUM FRANCIUM STRONTIUM YTTRIUM BARIUM RADIUM ZIRCONIUM HAFNIUM RUTHERFORDIUM VANADIUM NIOBIUM TANTALUM DUBNIUM CHROMIUM MOLYBDENUM TUNGSTEN SEABORGIUM MANGANESE TECHNETIUM RHENIUM BOHRIUM IRON RUTHENIUM OSMIUM HASSIUM

64

The Periodic Table of Elements C  

NLE Websites -- All DOE Office Websites (Extended Search)

.011 .011 Atomic Number Chemical Symbol Atomic Weight Chemical Name = Solid at room temperature = Liquid at room temperature = Gas at room temperature = Radioactive = Artificially Made KEY METALS NON-METALS http://education.jlab.org/ Last revised on April 3, 2013 [294] H Li Na K Be Mg Ca Sc Ti Rb Cs Fr Sr Y Ba Ra Zr Hf Rf V Nb Ta Db Cr Mo W Sg Mn Tc Re Bh Fe Ru Os Hs Co Rh Ir Mt Ni Pd Pt Ds Cu Ag Au Rg Zn Cd Hg Cn Ga In Tl Uut Ge Sn Pb Fl As Sb Bi Uup Se Te Po Lv Br I At Uus Kr Xe Rn Uuo La Ac Ce Th Pr Pa Nd U Pm Np Sm Pu Eu Am Gd Cm Tb Bk Dy Cf Ho Es Er Fm Tm Md Yb Yb No Lu Lr B Al C Si N P O S F Cl Ne He Ar HYDROGEN LITHIUM SODIUM POTASSIUM BERYLLIUM MAGNESIUM CALCIUM SCANDIUM TITANIUM RUBIDIUM CESIUM FRANCIUM STRONTIUM YTTRIUM BARIUM RADIUM ZIRCONIUM HAFNIUM RUTHERFORDIUM VANADIUM NIOBIUM TANTALUM DUBNIUM CHROMIUM MOLYBDENUM TUNGSTEN SEABORGIUM MANGANESE TECHNETIUM RHENIUM BOHRIUM IRON RUTHENIUM OSMIUM HASSIUM COBALT

65

Development of Wind-and-React Bi-2212 Accelerator Magnet Technology  

E-Print Network (OSTI)

28, 2007 Development of Wind-and-React Bi2212 Acceleratorsystems. We believe that a Wind-and-React (W&R) process isTemperature Super- conductor, Wind-and-React, Bi 2 Sr 2 CaCu

2008-01-01T23:59:59.000Z

66

Lightest Isotope of Bh Produced Via the 209Bi(52Cr,n)260Bh Reaction  

E-Print Network (OSTI)

models. For many years, cold fusion reactions utilizingproduced via the new cold fusion reaction 209 Bi( 52 Cr,

2007-01-01T23:59:59.000Z

67

Proceedings of ITC-CSCC 97 Okinawa, Japan Design of A Vita -bi Decoder  

E-Print Network (OSTI)

Proceedings of ITC-CSCC ¯97 Okinawa, Japan Design of A Vita -bi Decoder w ith Sequence- Pr ocessing

Choi, Woo-Young

68

Method and Apparatus for Production of 213Bi from a High ...  

automated generator system would enable highly reproducible and error-free production of 213Bi isotope; Related Links.

69

Control of magnetic properties of MnBi and MnBiCu thin films by Kr{sup +} ion irradiation  

SciTech Connect

Mn{sub 52}Bi{sub 48} (15 nm) and Mn{sub 54}Bi{sub 24}Cu{sub 21} (15 nm) thin films were prepared by the magnetron sputtering and vacuum annealing at 350 deg. C, and the variations of their structures and magnetic properties with 30 keV Kr{sup +} ion irradiation were studied. The MnBi and MnBiCu films exhibited saturation magnetizations M{sub s} of 180 emu/cc and 210 emu/cc, the coercivities H{sub c} of 10 kOe and 3.4 kOe, respectively. The M{sub s} and H{sub c} of the MnBi abruptly vanished by the irradiation of ion dose at 3 x 10{sup 14} ions/cm{sup 2}, while those of the MnBiCu film gradually decreased with increasing the ion dose and became zero at 5 x 10{sup 13} ions/cm{sup 2}. The different trend on the ion irradiation between MnBi and MnBiCu films is understood by the surface structure of the film, i.e., the MnBi has convex islands on its surface, which protect the underneath NiAs-type MnBi from the irradiation, while the MnBiCu has rather flat surface, and its crystal structure was uniformly modified by the irradiation. From the surface flatness and the uniformity of the MnBiCu film, as well as the low annealing temperature of 350 deg. C, it was concluded that the MnBiCu film is one of the attractive materials for high-density ion irradiation bit patterned media.

Xu Qianqian; Kanbara, Ryutarou; Kato, Takeshi; Iwata, Satoshi [Department of Quantum Engineering, Nagoya University Furo-cho, Chikusa-ku, Nagoya, 464-8603 (Japan); Tsunashima, Shigeru [Department of Research, Nagoya Industrial Science Research Institute, 1-13 Yotsuya-dori, Chikusa-ku, Nagoya 460-0819 (Japan)

2012-04-01T23:59:59.000Z

70

A CAD tool for the power estimation of CMOS, BiCMOS and BiNMOS gates  

E-Print Network (OSTI)

This thesis describes a CAD tool for the power estimation of CMOS, BiCMOS and BiNMOS gates. Using analytical models for the transient behavior of the gates, accurate estimates of the power dissipated by each type of gate during a typical transition are arrived at. The values thus obtained show a very good agreement with those obtained from HSPICE simulations. A detailed transient analysis is performed on the BiCMOS gate in particular and a expression for the current response is derived. This piecewise expression accurately models the current behavior of the BICMOS gate taking into account all important second-order effects. The current expression obtained enables a quick and accurate estimate of the power dissipation.

Islam, Kazi Inamul

1995-01-01T23:59:59.000Z

71

Whirlpool: Data Request (2010-SE-0103) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Data Request (2010-SE-0103) Whirlpool: Data Request (2010-SE-0103) April 5, 2010 DOE received information that a model of refrigerator-freezer manufactured by Whirlpool Corporation...

72

SeQuential Pacific Biodiesel LLC | Open Energy Information  

Open Energy Info (EERE)

Pacific Biodiesel LLC Jump to: navigation, search Name SeQuential-Pacific Biodiesel LLC Place Oregon Sector Biofuels Product JV between SeQuential Biofuels, Pacific Biodiesel, and...

73

2011-SE-1418 Sears_NND  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sears, Roebuck & Co. Sears, Roebuck & Co. (freezers) Issued: June 26, 2012 BEFORE THE U.S. DEPARTMENT OF ENERGY Washington, D.C. 20585 ) ) ) ) ) Case Number: 2011-SE-1418 NOTICE OF NONCOMPLIANCE DETERMINATION Manufacturers and private labelers are prohibited from distributing covered products that do not comply with applicable federal energy conservation standards. 10 C.F.R. § 429.102; 42 U.S.C. § 6302. On September 22, 2011, DOE completed testing of one compact chest freezer, Kenmore-brand model number 255.19702010 ("19702"), privately labeled and distributed in commerce in the U.S. by Sears, Roebuck & Co. ("Sears") and manufactured in China. In December 2011 and January 2012, DOE completed testing oftln·ee additional units of 19702. DOE's testing was

74

Summit Manufacturing: Noncompliance Determination (2010-SE-0303)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the the Matter of: Summit Manufacturing, Inc. Case Number 2010-SE-0303 NOTICE OF NONCOMPLIANCE DETERMINATION CERTIFICATION Manufacturers of certain covered products are required to certify compliance with the applicable energy conservation standards through submission of a compliance statement and a certification report. 10 CFR § 430.62. See 42 U.S.C. 6296 . The compliance statement is a legal statement by the manufacturer that the information provided in its certification reports is true , accurate and complete, that the basic models certified meet the applicable energy conservation standard, that the energy efficiency information report is the result of testing performed in conformance with the applicable test requirements in 10 CFR part 430, subpart B; and that the manufacturer is

75

Bi-Con Services Inc | Open Energy Information  

Open Energy Info (EERE)

Bi-Con Services Inc Bi-Con Services Inc Jump to: navigation, search Name Bi-Con Services Inc Address 10901 Clay Pike Road Place Derwent, Ohio Zip 43733 Sector Buildings, Efficiency, Services Product Engineering/architectural/design;Installation; Manufacturing Phone number 740-685-2542 Website http://www.bi-conservices.com Coordinates 39.9165398°, -81.5259894° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.9165398,"lon":-81.5259894,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

76

Competitive Clustering in a Bi-disperse Granular Gas  

E-Print Network (OSTI)

A bi-disperse granular gas in a compartmentalized system is experimentally found to cluster competitively: Depending on the shaking strength, the clustering can be directed either towards the compartment initially containing mainly small particles, or to the one containing mainly large particles. The experimental observations are quantitatively explained within a flux model.

Ren Mikkelsen; Devaraj van der Meer; Ko van der Weele; Detlef Lohse

2002-10-06T23:59:59.000Z

77

Metabolism of selenium (Se) in rats chronically poisoned with D- or L-selenomethionine (SeMet), selenite or selenate  

SciTech Connect

L-SeMet is a potential cancer chemoprevention agent for humans. Little difference was seen in the acute toxicity of L vs. D-SeMet in rats. To study chronic toxicity, weanling male rats were fed purified diets containing 2.5, 5.0 or 10 ppm Se as L-SeMet, D-SeMet, Na/sub 2/SeO/sub 3/ or Na/sub 2/SeO/sub 4/ for 6 weeks. Controls received 0.1 ppm Se as selenite. All rats fed 10 ppm Se died within 29 days. Se fed as D-SeMet was retained in the tissues as strongly as L-SeMet. Rats fed D or L-SeMet deposited large amounts of Se in muscle not reflected by proportionate increases in either plasma or RBC Se. Therefore, attempts to follow increases in Se body burden in individuals supplemented with large doses of L-SeMet by monitoring plasma or whole blood Se levels should be interpreted with caution.

McAdam, P.A.; Levander, O.A.

1986-03-01T23:59:59.000Z

78

Temperature dependent band offsets in PbSe/PbEuSe quantum well heterostructures  

Science Conference Proceedings (OSTI)

The band offsets of PbSe/Pb{sub 1-x}Eu{sub x}Se multi-quantum wells grown by molecular beam epitaxy are determined as a function of temperature and europium content using temperature-modulated differential transmission spectroscopy. The confined quantum well states in the valence and conduction bands are analyzed using a k{center_dot}p model with envelope function approximation. From the fit of the experimental data, the normalized conduction band offset is determined as 0.45{+-}0.15 of the band gap difference, independently of Eu content up to 14% and temperature from 20 to 300 K.

Simma, M.; Bauer, G.; Springholz, G. [Institut fuer Halbleiter und Festkoerperphysik, Johannes Kepler Universitaet, A-4040 Linz (Austria)

2012-10-22T23:59:59.000Z

79

LgCOOleS, Se*&,,  

Office of Legacy Management (LM)

; "Ofice Mem ; "Ofice Mem . m *" ' ' *IilCl:t Consists of & " ' / Of LgCOOleS, Se*&,, es * UNITED STATES G-OVERNM NT <;$)~~ 3i;t-j /Lj ' , ~~~' jCjC;O c) TO I LT. :s. Clnr!te, ,;or,~~~,~' , -.,,..:-:-Y"' r~-;i~.L.-Z.:r DATE: uL"C!.,?r 6, 1' ?L9 A meting mj: !1:1d in i:1CG bet,. _ ^ .- ',cel representatives 51 ;.2rshz:i sr.3 the A;.35 to nwotiztc .the prices for producing FY-1: (brow oxise), _1 I%-; (green salt and .?T-12 (he::.-iZluoriic) fcr the sc2or.d 3,uarter of fisc21 1950, (Cctober, Z:ove-r.ber, 2c?Ce.:lxr l?L?). Th-: foll;:~:i;.E xttcndcd the mztin:: "-Tsh-:, -.,q ..__ _id.l - 1;. 2. 9till;Iell

80

Thermoelectric figure of merit of Ag{sub 2}Se with Ag and Se excess  

Science Conference Proceedings (OSTI)

In the temperature range of 100-300 K, the electric ({sigma}) and thermoelectric ({alpha}{sub 0}) properties of Ag{sub 2}Se with an excess of Ag as high as {approx}0.1 at. % and Se as high as {approx}1.0 at. %, respectively, are investigated. From the data on {sigma}, {alpha}{sub 0}, and {chi}{sub tot} (thermal conductivities), the thermoelectric power {alpha}{sub 0}{sup 2}{sigma} and the figure of merit Z are calculated. It is found that {alpha}{sub 0}{sup 2}{sigma} and Z attain the peak values at room temperature and the electron concentration n {approx} 6.5 x 10{sup 18} cm{sup -3}.

Aliev, F. F., E-mail: farzali@physics.ab.az; Jafarov, M. B.; Eminova, V. I. [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan)

2009-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Procedure for separation of Se and determination of Se-79 by liquid scintillation  

Science Conference Proceedings (OSTI)

This report describes the development work and demonstration of a technique for separation of selenium suitable for determination of Se-79 by liquid scintillation counting. The technique has been demonstrated on actual DWPF (Defense Waste Processing Facility) sludge samples which contain very large loads of Sr-90 activity. The separation required a decontamination of selenium from Sr by a factor of over 10{sup 6}, from Co and Cs by factor of 10{sup 4}, and from Tc-99 by a factor of 100, while still maintaining a selenium recovery of about 50%. Using this technique the author has determined Se-79 in five actual DWPF samples with a precision of about 70% relative standard deviation. This separation has not been demonstrated on actual DWPF samples which have the largest Cs-137 loads. He does not anticipate that these untested samples will present a difficult problem.

Dewberry, R.A.

1991-08-11T23:59:59.000Z

82

Seebeck Measurements on Arrays of Embedded Bi Submicron Wires  

E-Print Network (OSTI)

The transport properties of nanoscaled objects can be very different from those of the corresponding bulk material due to the influence of finite-size and quantum-size effects in low-dimensional structures. In 1993, Hicks and Dresselhaus published theoretical investigations on transport properties of one-dimensional conductors, predicting a significantly enhanced thermoelectric efficiency [1]. Because of large effective masses and mean free path of the conduction electrons, Bi is an ideal material for studying the transport properties of nanowires. The electrical conductivity of Bi nanowires was already intensively investigated [2]. Here, a simple method for the measurement of another thermoelectric material property, the Seebeck coefficient S, of arrays of embedded submicron wires is presented. S is defined as proportionality factor between the potential

S. Mller; T. W. Cornelius; D. Huzel; O. Picht; M. Rauber; R. Neumann

2008-01-01T23:59:59.000Z

83

Inorganic resins for clinical use of .sup.213Bi generators  

DOE Patents (OSTI)

Applicant's invention is a radionuclide generator resin material for radiochemical separation of daughter radionuclides, particularly .sup.213Bi, from a solution of parental radionuclides, the resin material capable of providing clinical quantities of .sup.213Bi of at least 20-mCi, wherein the resin material comprises a silica-based structure having at least one bifunctional ligand covalently attached to the surface of the silica-based structure. The bifunctional ligand comprises a chemical group having desirable surface functionality to enable the covalent attachment of the bifunctional ligand thereon the surface of the structure and the bifunctional ligand further comprises a second chemical group capable of binding and holding the parental radionuclides on the resin material while allowing the daughter radionuclides to elute off the resin material. The bifunctional ligand has a carbon chain with a limited number of carbons to maintain radiation stability of the resin material.

DePaoli, David W. (Knoxville, TN); Hu, Michael Z. (Knoxville, TN); Mirzadeh, Saed (Knoxville, TN); Clavier, John W. (Elizabethton, TN)

2011-03-29T23:59:59.000Z

84

Phase composition of films in a Bi-S system and formation of Bi{sub 2}S{sub 3} films with different substructures  

Science Conference Proceedings (OSTI)

Electron diffraction was used to study the formation of phases in a Bi-S system. It is shown that the phase with composition Bi{sub 2}S{sub 3} appears as result of consecutive deposition of Bi and S irrespective of the order of deposition; this phase also appears in the case of simultaneous deposition of components. The films formed at room temperature are amorphous. Amorphous thin Bi{sub 2}S{sub 3} films are stable at room temperature and crystallize at temperatures in the region of {approx}423 K. The conditions for formation of Bi{sub 2}S{sub 3} films with different substructures are established.

Akhmedov, G. M. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)], E-mail: exmedovqurban@rambler.ru

2008-02-15T23:59:59.000Z

85

Ford F-250 Fact Sheet: Bi-fuel propane pickup  

DOE Green Energy (OSTI)

The U.S. Department of Energy (DOE) is promoting the use of alternative fuels and alternative fuel vehicles (AFVs). To support this activity, DOE has directed the National Renewable Energy Laboratory (NREL) to conduct projects to evaluate the performance and acceptability of light-duty AFVs. A 1999 F-250 bi-fuel propane pickup was run through a series of tests while operating on LPB and gasoline. The tests are explained briefly in this fact sheet.

Eudy, L.

1999-12-27T23:59:59.000Z

86

Cost Savings and Energy Reduction: Bi-Level Lighting Retrofits in Multifamily Buildings  

E-Print Network (OSTI)

Community Environmental Center implements Bi- Level Lighting fixtures as a component of cost-effective multifamily retrofits. These systems achieve substantial energy savings by automatically reducing lighting levels when common areas are unoccupied. Because there is a lack of empirical evidence documenting the performance of these systems, this paper uses electric consumption data collected from buildings before and after retrofits were performed, and analyzes the cost and consumption savings achieved through installation of Bi-Level Lighting systems. The results of this report demonstrate that common areas that are currently not making use of Bi-Level lighting systems would achieve significant financial and environmental benefits from Bi-Level focused retrofits. This project concludes that building codes should be updated to reflect improvements in Bi-Level Lighting technologies, and that government-sponsored energy efficiency programs should explicitly encourage or mandate Bi-Level Lighting installation components of subsidized retrofit projects.

Ackley, J.

2010-01-01T23:59:59.000Z

87

Method And Apparatus For Production Of Bi-213 From The Activity Ac-225 Source  

DOE Patents (OSTI)

A method and apparatus for isolating and purifying a .sup.213 Bi radioactive isotope from an .sup.225 Ac source using a primary column and a primary sorbent which preferentially retains .sup.225 Ac over .sup.213 Bi when exposed to a compatible solvent in combination with a secondary column having a secondary sorbent which retains .sup.213 Bi when exposed to a mixture of the compatible solvent and .sup.213 Bi. A "compatible solvent" is a solvent which will preferentially remove .sup.213 Bi radioactive isotopes from a primary sorbent without removing .sup.225 Ac radioactive isotopes, and then allow .sup.213 Bi radioactive isotopes removed from the primary sorbent to be retained on a secondary sorbent, without having to dilute or otherwise chemically or physically modify the compatible solvent in between exposure to the primary and secondary sorbents.

Egorov, Oleg B. (West Richland, WA); O' Hara, Matthew J. (Richland, WA)

2005-12-06T23:59:59.000Z

88

Software: SE2-ANL - Nuclear Engineering Division (Argonne)  

NLE Websites -- All DOE Office Websites (Extended Search)

OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Software SE2-ANL (Thermal-Hydraulic Codes) Bookmark and Share Standard Code Description SE2-ANL is a modified version of...

89

GE Lighting Solutions: Order (2013-SE-4901) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Order (2013-SE-4901) GE Lighting Solutions: Order (2013-SE-4901) April 4, 2013 DOE ordered General Electric Lighting Solutions, LLC to pay a 5,360 civil penalty after finding GE...

90

Deformation potentials of CdSe quantum dots  

E-Print Network (OSTI)

a v (in eV) of zinc-blende CdSe. SEPM PW PW+d a a LAPW Expt>4: The size dependence of a of C B M state of CdSe QDs. vDeformation potentials of CdSe quantum dots Jingbo L i and L

Li, Jingbo; Wang, Lin-Wang

2004-01-01T23:59:59.000Z

91

Local Structure of CuIn3Se5  

DOE Green Energy (OSTI)

The results of a detailed EXAFS study of the Cu-K, In-K, and Se-K edges CuIn3Se5 are reported. The Cu and In first nearest neighbor local structures were found to be almost identical to those in CuInSe2.

Chang, C. H.; Wei, S. H.; Leyarovska, N.; Johnson, J. W.; Zhang, S. B.; Stanbery, B. J.; Anderson, T. J.

2000-01-01T23:59:59.000Z

92

Ce-Doped BiFeO3 Nanoparticles: Sol-Gel Synthesis and ...  

Science Conference Proceedings (OSTI)

... Epitaxial BiFeO3 Thin Films Magnetoelastic/Piezoelectric Laminated Structures for Tunable Remote Contact-Less Magnetic Sensing and Energy Harvesting.

93

Argentina-NREL Bi-National Energy Working Group | Open Energy...  

Open Energy Info (EERE)

Argentina-NREL Bi-National Energy Working Group Jump to: navigation, search Logo: Argentina-NREL Cooperation Name Argentina-NREL Cooperation AgencyCompany Organization National...

94

Enhanced room temperature electronic and thermoelectric properties of the dilute bismuthide InGaBiAs  

SciTech Connect

We report room temperature electronic and thermoelectric properties of Si-doped In{sub 0.52}Ga{sub 0.48}Bi{sub y}As{sub 1-y} with varying Bi concentrations. These films were grown epitaxially on a semi-insulating InP substrate by molecular beam epitaxy. We show that low Bi concentrations are optimal in improving the conductivity, Seebeck coefficient, and thermoelectric power factor, possibly due to the surfactant effects of bismuth. We observed a reduction in thermal conductivity with increasing Bi concentration, which is expected because of alloy scattering. We report a peak ZT of 0.23 at 300 K.

Dongmo, Pernell; Zhong Yujun; Bomberger, Cory; Zide, Joshua [Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716 (United States); Attia, Peter [Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716 (United States); Cheaito, Ramez; Hopkins, Patrick E. [Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia 2294 (United States); Ihlefeld, Jon F. [Sandia National Laboratories, P.O. Box 5800, M.S. 1069, Albuquerque, New Mexico 87185 (United States)

2012-11-01T23:59:59.000Z

95

Leader Electronics: Data Request (2010-SE-2301) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Data Request (2010-SE-2301) Data Request (2010-SE-2301) Leader Electronics: Data Request (2010-SE-2301) August 19, 2010 DOE requested test data from Leader Electronics Inc. for various models of external power supplies after Leader Electronics certified energy values that did not meet federal energy conservation standards. Leader Electronics was required to provide test data, including complete test reports, for external power supply models "NU50-2093400-I3(NU50-21090-300F)" and "MU03-F050040-AI(MU03-F1050-AKOS)." Leader Electronics: Data Request (2010-SE-2301) More Documents & Publications Leader Electronics: Noncompliance Determination (2010-SE-2301) Leader Electronics: Notice of Allowance (2010-SE-2301) Lutron Electronics: Noncompliance Determination (2012-SE-3796

96

Bi-criteria Pipeline Mappings for Parallel Image Processing  

E-Print Network (OSTI)

Mapping workflow applications onto parallel platforms is a challenging problem, even for simple application patterns such as pipeline graphs. Several antagonistic criteria should be optimized, such as throughput and latency (or a combination). Typical applications include digital image processing, where images are processed in steady-state mode. In this paper, we study the mapping of a particular image processing application, the JPEG encoding. Mapping pipelined JPEG encoding onto parallel platforms is useful for instance for encoding Motion JPEG images. As the bi-criteria mapping problem is NP-complete, we concentrate on the evaluation and performance of polynomial heuristics.

Benoit, Anne; Rehn-Sonigo, Veronika; Robert, Yves

2008-01-01T23:59:59.000Z

97

Experience with Bi-Fuel LPG Pickups in Texas  

DOE Green Energy (OSTI)

The State of Texas requires state agencies to purchase alternative fuel vehicles (AFVs). In 1996, Texas Department of Transportation (TxDOT) representatives added about 400 bi-fuel liquefied petroleum gas (LPG) pickup trucks to their fleet. The fleet managers were willing to share information about their fleets and the operation of these vehicles, so a study was launched to collect operations, maintenance, and cost data for selected LPG and gasoline vehicles (as controls) throughout 18 months of vehicle operation. This case study presents the results of that data collection and its subsequent analysis.

Whalen, P.

1999-05-12T23:59:59.000Z

98

Bi-Directional DC-DC Converter for PHEV Applications  

DOE Green Energy (OSTI)

Plug-In Hybrid Electric Vehicles (PHEV) require high power density energy storage system (ESS) for hybrid operation and high energy density ESS for Electric Vehicle (EV) mode range. However, ESS technologies to maximize power density and energy density simultaneously are not commercially feasible. The use of bi-directional DC-DC converter allows use of multiple energy storage, and the flexible DC-link voltages can enhance the system efficiency and reduce component sizing. This will improve fuel consumption, increase the EV mode range, reduce the total weight, reduce battery initial and life cycle cost, and provide flexibility in system design.

Abas Goodarzi

2011-01-31T23:59:59.000Z

99

Neural network control of air-to-fuel ratio in a bi-fuel engine  

Science Conference Proceedings (OSTI)

In this paper, a neural network-based control system is proposed for fine control of the intake air/fuel ratio in a bi-fuel engine. This control system is an add-on module for an existing vehicle manufacturer's electronic control units (ECUs). Typically ... Keywords: Artificial neural networks, bi-fuel engines, compressed natural gas (CNG), fuel injection control

G. Gnanam; S. R. Habibi; R. T. Burton; M. T. Sulatisky

2006-09-01T23:59:59.000Z

100

BiDi screen : depth and lighting aware interaction and display  

E-Print Network (OSTI)

In this thesis, I describe a new type of interactive display that supports both on-screen multi-touch interactions and off-screen hover-based gestures. This BiDirectional (BiDi) screen, capable of both image capture and ...

Hirsch, Matthew W

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Large pyramid shaped single crystals of BiFeO{sub 3} by solvothermal synthesis method  

SciTech Connect

Synthesis parameters are optimized in order to grow single crystals of multiferroic BiFeO{sub 3}. 2 to 3 mm size pyramid (tetrahedron) shaped single crystals were successfully obtained by solvothermal method. Scanning electron microscopy with EDAX confirmed the phase formation. Raman scattering spectra of bulk BiFeO3 single crystals have been measured which match well with reported spectra.

Sornadurai, D.; Ravindran, T. R.; Paul, V. Thomas; Sastry, V. Sankara [Condensed Matter Physics Division, Materials Science Group, Physical Metallurgy Division, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu (India); Condensed Matter Physics Division, Materials Science Group (India)

2012-06-05T23:59:59.000Z

102

Bi-parameter incremental unknowns ADI iterative methods for elliptic problems  

Science Conference Proceedings (OSTI)

Bi-parameter incremental unknowns (IU) alternating directional implicit (ADI) iterative methods are proposed for solving elliptic problems. Condition numbers of the coefficient matrices for these iterative schemes are carefully estimated. Theoretical ... Keywords: Bi-parameter ADI iterative method, Condition number, Convergence analysis, Incremental unknowns

Aili Yang; Yujiang Wu; Yongqing Wu; Dawei Ren

2012-07-01T23:59:59.000Z

103

Bi-objective optimization of the intermodal terminal location problem as a policy-support tool  

Science Conference Proceedings (OSTI)

Determining the optimal layout of an intermodal terminal network, more specifically the optimal locations of the terminals, is a complicated matter that requires adequate decision support tools. In this paper, a bi-objective model is developed, minimizing ... Keywords: Bi-objective optimization, GRASP, Intermodal terminal location, Metaheuristics

Kenneth SRensen; Christine Vanovermeire

2013-02-01T23:59:59.000Z

104

Hicon: Proposed Penalty (2013-SE-1426) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Hicon: Proposed Penalty (2013-SE-1426) Hicon: Proposed Penalty (2013-SE-1426) Hicon: Proposed Penalty (2013-SE-1426) July 8, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Ningbo Hicon International Industry Company, Ltd. manufactured and distributed noncompliant freezer basic model BD-200 in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Hicon: Proposed Penalty (2013-SE-1426) More Documents & Publications Hicon: Noncompliance Determination (2013-SE-1426) Hicon: Order (2013-SE-1426) Haier: Proposed Penalty

105

Philips: Proposed Penalty (2012-SE-2605) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2012-SE-2605) Proposed Penalty (2012-SE-2605) Philips: Proposed Penalty (2012-SE-2605) November 29, 2012 DOE alleged in a Notice of Proposed Civil Penalty that Philips Lighting Electronics N. A. manufactured and distributed noncompliant fluorescent lamp ballast basic model VEL-1S40-SC in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Philips: Proposed Penalty (2012-SE-2605) More Documents & Publications Philips: Noncompliance Determination (2012-SE-2605) Philips: Order (2012-SE-2605)

106

Simkar: Proposed Penalty (2012-SE-5408) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Simkar: Proposed Penalty (2012-SE-5408) Simkar: Proposed Penalty (2012-SE-5408) Simkar: Proposed Penalty (2012-SE-5408) November 21, 2012 DOE alleged in a Notice of Proposed Civil Penalty that Simkar Corporation manufactured and distributed noncompliant probe-start and pulse-start basic model metal halide lamp fixtures in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Simkar: Proposed Penalty (2012-SE-5408) More Documents & Publications Simkar: Noncompliance Determination (2012-SE-5408) Simkar: Order (2012-SE-5408)

107

Central Moloney: Proposed Penalty (2013-SE-4702) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2013-SE-4702) Proposed Penalty (2013-SE-4702) Central Moloney: Proposed Penalty (2013-SE-4702) March 20, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Central Moloney, Inc. manufactured and distributed a variety of noncompliant liquid-immersed distribution transformers in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Central Moloney: Proposed Penalty (2013-SE-4702) More Documents & Publications Central Moloney: Noncompliance Determination (2013-SE-4702) Central Moloney: Order (2013-SE-4702)

108

CNA: Proposed Penalty (2013-SE-1430) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CNA: Proposed Penalty (2013-SE-1430) CNA: Proposed Penalty (2013-SE-1430) CNA: Proposed Penalty (2013-SE-1430) September 24, 2013 DOE alleged in a Notice of Proposed Civil Penalty that CNA International, Inc., d/b/a MC Appliance Corp. privately labeled and distributed noncompliant freezer Magic Chef model number HMCF7W in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. CNA: Proposed Penalty (2013-SE-1430) More Documents & Publications CNA: Noncompliance Determination (2013-SE-1430) CNA: Compromise Agreement (2013-SE-1430)

109

Se-based Positive Electrode Material for Rechargeable Battery ...  

Science Conference Proceedings (OSTI)

This series of matrials could be used in both Li and Na battery system. It is found that Se-containing materials showed better electrochemical performace in terms

110

ASKO Appliances: Compliance Determination (2010-SE-0601) | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(2010-SE-0601) Septemer 8, 2010 DOE tested four units of the model D5122XXLB dishwasher manufactured by ASKO Appliances, Inc. Applying statistical analysis, DOE found that...

111

Lutron Electronics: Proposed Penalty (2012-SE-3796) | Department...  

NLE Websites -- All DOE Office Websites (Extended Search)

(2012-SE-3796) May 2, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Lutron Electronics Co., Inc. manufactured and distributed noncompliant class A external power...

112

Phase formation and phase transformations in Bi-Te films with nanoscale thickness  

Science Conference Proceedings (OSTI)

The processes of phase formation are studied in a binary Bi-Te system using the kinematic electron diffraction technique. It is established that, in the case of both simultaneous and layer-by-layer deposition of bismuth and tellurium and irrespective of the order of their deposition, phases with compositions Bi{sub 2}Te{sub 3} and BiTe are formed at the condensation plane in the amorphous and crystalline state, respectively. The amorphous Bi{sub 2}Te{sub 3} phase is stable at room temperature and crystallizes at a temperature of 423 K. It is shown that ordering of the phase BiTe is not a consequence of atomic order of the structure; rather, it is caused by the real structure of the object (by blocks)

Akhmedov, K. M. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)], E-mail: axmedovqurban@rambler.ru

2008-09-15T23:59:59.000Z

113

Waiver of the Bi-Weekly Pay L:imitation for Emergency Response Activities |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Waiver of the Bi-Weekly Pay L:imitation for Emergency Response Waiver of the Bi-Weekly Pay L:imitation for Emergency Response Activities Waiver of the Bi-Weekly Pay L:imitation for Emergency Response Activities Heads of Departmental elements, with the concurrence of their servicing Human Resources staff, are authorized to waive the bi-weekly pay limitation for employees engaged in emergency response activities that include, but are not limited to, disaster relief assistance, radiological assistance, and terrorist attacks. This authority will expire December 31, 2015. Waiver of the Bi-Weekly Pay Limitation for Emergency Response Activities Responsible Contacts Bruce Murray HR Policy Advisor E-mail bruce.murray@hq.doe.gov Phone 202-586-3372 More Documents & Publications Guidance on Waivers of Premium Pay To Meet A Critical Need

114

New and Underutilized Technology: Bi-level Garage/Parking Lot/Pedestrian  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Garage/Parking Garage/Parking Lot/Pedestrian Lighting New and Underutilized Technology: Bi-level Garage/Parking Lot/Pedestrian Lighting October 4, 2013 - 5:02pm Addthis The following information outlines key deployment considerations for bi-level garage/parking lot/pedestrian lighting within the Federal sector. Benefits Bi-level LED lighting uses fluorescent and LED lighting sources with bi-level motion sensors to reduce lighting levels when the parking area is not in use. Application Bi-level LED lighting is appropriate for garage, parking lot, and pedestrian areas. It can also be applied to pathway lighting where appropriate. Key Factors for Deployment Evaluate specific lighting and environmental requirements before deployment. Ranking Criteria Federal energy savings, cost-effectiveness, and probability of success are

115

Simple shear processing of bulk BI?TE? alloys  

E-Print Network (OSTI)

The objective of this work is to determine the appropriate extrusion conditions of cast Bi?Te? alloys via equal channel angular extrusion (ECAE) to produce material that has a fine grain size (5~30[]m), uniform grain morphology and low grain boundary misorientation for improving thermoelectric and mechanical properties. The range of variables examined in this study includes: alloy type (p- and n-type) extrusion temperature (400 ~ 525?C), extrusion route (A, B, C and E), extrusion speed (0.3 ~ 0.01 in/min), and the number of extrusions (1, 2, 4 and 8). The microstructure is characterized by a polarized optical microscopy. Successful extrusions were accomplished at a temperature and strain rate that enabled dynamic recrystallization. Holding in the hot die after extrusion encouraged grain growth. The post processed grain size is found to be strongly dependent on extrusion temperature and extrusion speed. The microstructural uniformity is found to be dependent on the number of extrusions and extrusion route. Uniform equiaxial grain of 10 to 30mm average size are obtained in the p-type alloy after four extrusion passes following route E at a temperature of 500?C and an extrusion speed of 0.1 in/min. The results encourage further work and indicate ECAE is a viable method of grain refinement of Bi?Te? alloys.

Im, Jae-taek

2001-01-01T23:59:59.000Z

116

APS/DPP 111207-se 1 University Fusion Association Meeting  

E-Print Network (OSTI)

greater interaction between the Office of Science researchers and the NNSA scientists and provide greater has been included in the NNSA program. #12;APS/DPP 111207-se 6 FY2008 CR · The Department is operating Interest May 2007 SC/NNSA Joint Program in HEDLP #12;APS/DPP 111207-se 12 HEDP-Research Topics & Related

117

Mackle Company: Proposed Penalty (2010-SE-0106) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Mackle Company: Proposed Penalty (2010-SE-0106) Mackle Company: Proposed Penalty (2010-SE-0106) Mackle Company: Proposed Penalty (2010-SE-0106) June 14, 2010 DOE alleged in a Notice of Proposed Civil Penalty that The Mackle Company, Inc., sold and/or distributed noncompliant refrigerators, refrigerator-freezers, and freezers in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. The Mackle Company: Proposed Penalty (2010-SE-0106) More Documents & Publications Mackle Company: Proposed Penalty (2011-CE-2102) Mackle Company: Order (2010-SE-0106)

118

Neptun Light: Proposed Penalty (2012-SE-3504) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Neptun Light: Proposed Penalty (2012-SE-3504) Neptun Light: Proposed Penalty (2012-SE-3504) Neptun Light: Proposed Penalty (2012-SE-3504) May 2, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Neptun Light, Inc. failed to certify a variety of medium base compact fluorescent lamps as compliant with the applicable energy conservation standards. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Neptun Light: Proposed Penalty (2012-SE-3504) More Documents & Publications Neptun Light: Order (2012-SE-3504) Excellence Opto: Proposed Penalty (2013-CE-49002)

119

Teddico: Proposed Penalty (2012-SE-5409) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2012-SE-5409) Proposed Penalty (2012-SE-5409) Teddico: Proposed Penalty (2012-SE-5409) November 21, 2012 DOE alleged in a Notice of Proposed Civil Penalty that The Electrical Design, Development and Implementation Company d/b/a Teddico manufactured and distributed noncompliant metal halide lamp fixtures with magnetic probe-start ballasts in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Teddico: Proposed Penalty (2012-SE-5409) More Documents & Publications Teddico: Noncompliance Determination (2012-SE-5409)

120

Mackle Company: Proposed Penalty (2010-SE-0106) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Mackle Company: Proposed Penalty (2010-SE-0106) Mackle Company: Proposed Penalty (2010-SE-0106) Mackle Company: Proposed Penalty (2010-SE-0106) June 14, 2010 DOE alleged in a Notice of Proposed Civil Penalty that The Mackle Company, Inc., sold and/or distributed noncompliant refrigerators, refrigerator-freezers, and freezers in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. The Mackle Company: Proposed Penalty (2010-SE-0106) More Documents & Publications Mackle Company: Proposed Penalty (2011-CE-2102) Mackle Company: Order (2010-SE-0106)

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Goodman Manufacturing: Proposed Penalty (2011-SE-4301) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2011-SE-4301) Proposed Penalty (2011-SE-4301) Goodman Manufacturing: Proposed Penalty (2011-SE-4301) December 2, 2011 DOE alleged in a Notice of Proposed Civil Penalty that Goodman Manufacturing manufactured and distributed noncompliant basic model CPC180* commercial package air conditioners in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Goodman Manufacturing: Proposed Penalty (2011-SE-4301) More Documents & Publications Goodman Manufacturing: Noncompliance Determination (2011-SE-4301)

122

Pax Global: Noncompliance Determination (2013-SE-1413) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pax Global: Noncompliance Determination (2013-SE-1413) Pax Global: Noncompliance Determination (2013-SE-1413) Pax Global: Noncompliance Determination (2013-SE-1413) April 2, 2013 DOE issued a Notice of Noncompliance Determination to Pax Global, Inc. finding that freezer basic models (1) Crosley CCF51; (2) Crosley CCF69; (3) Crosley CCF106; and (4) Daewoo DCF-106W do not comport with the energy conservation standards. DOE determined the products were noncompliant based on DOE testing. Pax Global must immediately notify each person (or company) to whom Pax Global distributed the noncompliant products that the products do not meet Federal standards. Pax Global: Noncompliance Determination (2013-SE-1413) More Documents & Publications Pax Global: Compromise Agreement (2013-SE-1413) Daewoo: Proposed Penalty (2010-CE-0410)

123

Thermoelectric properties of n-type PbSe revisited  

Science Conference Proceedings (OSTI)

It was recently predicted \\cite{parker} and experimentally confirmed \\cite{sny_PbSe} that $p$-type PbSe would be a good thermoelectric material. Recent experimental work \\cite{pers2} now suggests that $n$-type PbSe can also be a good thermoelectric material. We now re-examine the thermoelectric performance of PbSe with a revised approximation which improves band gap accuracy. We now find that $n$-type PbSe {\\it can} be a high performance material, with thermopowers as high in magnitude as 250 $\\mu$V/K at 1000 K and 300 $\\mu$V/K at 800 K. Optimal 1000 K $n$-type doping ranges are between 2 $\\times 10^{19}$cm$^{-3}$ and 8 $\\times 10^{19}$cm$^{-3}$, while at 800 K the corresponding range is from 7 $\\times$10$^{18}$ to 4 $\\times $10$^{19}$ cm$^{-3}$.

Parker, David S [ORNL; Singh, David J [ORNL; Ren, Zhifeng [Boston College, Chestnut Hill; Zhang, Qinyong [Xihua University

2012-01-01T23:59:59.000Z

124

Enhanced photoluminescence from free-standing microstructures fabricated on MBE grown PbSe-PbSrSe MQW structure  

Science Conference Proceedings (OSTI)

Fabrication of microrods from multi-quantum well (MQW) PbSe-PbSrSe structure grown in molecular beam epitaxy (MBE) followed by its morphological as well as optical characterizations are described. Pulsed PL intensity is increased by 64 times per unit ... Keywords: MBE, MQW microrod, MQW microtube, Photoluminescence, SEM

S. Mukherjee; S. Jain; F. Zhao; J. P. Kar; D. Li; Z. Shi

2008-04-01T23:59:59.000Z

125

Midea: Noncompliance Determination (2010-SE-0110) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0-SE-0110) 0-SE-0110) Midea: Noncompliance Determination (2010-SE-0110) October 5, 2011 DOE issued a Notice of Noncompliance Determination to Midea America Corporation finding that basic model number HS-390C, a chest freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Midea must immediately notify each person (or company) to whom Midea distributed the noncompliant product that the product does not meet Federal standards. In addition, Midea must provide to DOE documents and records showing the number of units Midea distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Midea: Noncompliance Determination (2010-SE-0110) More Documents & Publications

126

Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) August 10, 2010 DOE issued a Notice of Allowance to Resume Distribution, authorizing Fuzhou Sunlight Lighting Electrical Appliance Company, Ltd. to resume distribution of eleven models of lamps. DOE had previously found certain Fuzhou products did not comport with the applicable energy conservation standards based on Fuzhou's testing. After determining that the original testing was not performed in accordance with DOE procedures, Fuzhou Sunlight provided new test data to DOE demonstrating that eleven models meet the applicable energy conservation standard when tested in accordance with DOE test procedures. Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402)

127

Grainger: Noncompliance Determination (2013-SE-1411) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Noncompliance Determination (2013-SE-1411) Noncompliance Determination (2013-SE-1411) Grainger: Noncompliance Determination (2013-SE-1411) April 29, 2013 DOE issued a Notice of Noncompliance Determination to Grainger International Inc. finding that freezer models, privately labeled as the Dayton 5NTX4, the Dayton 5NTX5, and the Dayton 5NTX6 do not comport with the energy conservation standards. Grainger must immediately notify each person (or company) to whom Grainger distributed the noncompliant products that the products do not meet Federal standards. In addition, Grainger must provide to DOE documents and records showing the number of units Grainger distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Grainger: Noncompliance Determination (2013-SE-1411)

128

Lattice vibrations of pure and doped GaSe  

Science Conference Proceedings (OSTI)

The Bridgman method is used to grow especially undoped and doped single crystals of GaSe. Composition and impurity content of the grown crystals were determined using X-ray fluorescence (XRF) method. X-ray diffraction, Raman scattering, photoluminescence (PL), and IR transmission measurements were performed at room temperature. The long wavelength lattice vibrations of four modifications of GaSe were described in the framework of modified one-layer linear-chain model which also takes into consideration the interaction of the selenium (Se) atom with the second nearest neighbor gallium (Ga) atom in the same layer. The existence of an eight-layer modification of GaSe is suggested and the vibrational frequencies of this modification are explained in the framework of a lattice dynamical model considered in the present work. Frequencies and the type of vibrations (gap, local, or resonance) for the impurity atoms were calculated and compared with the experimental results.

Allakhverdiev, K. [Materials Institute, Marmara Research Center, TUBITAK, Gebze/Kocaeli 41470 (Turkey) and Institute of Physics, Azerbaijan National Academy of Sciences, Baku AZ1143 (Azerbaijan)]. E-mail: kerim.allahverdi@mam.gov.tr; Baykara, T. [Materials Institute, Marmara Research Center, TUBITAK, Gebze/Kocaeli 41470 (Turkey); Ellialtioglu, S. [Department of Physics, Middle East Technical University, Ankara 06531 (Turkey); Hashimzade, F. [Institute of Physics, Azerbaijan National Academy of Sciences, Baku AZ1143 (Azerbaijan); Huseinova, D. [Institute of Physics, Azerbaijan National Academy of Sciences, Baku AZ1143 (Azerbaijan); Kawamura, K. [Institute of Materials Science, University of Tsukuba 305-8573 (Japan); Kaya, A.A. [Materials Institute, Marmara Research Center, TUBITAK, Gebze/Kocaeli 41470 (Turkey); Kulibekov, A.M. [Department of Physics, Mugla University, Mugla 48000 (Turkey); Onari, S. [Institute of Materials Science, University of Tsukuba 305-8573 (Japan)

2006-04-13T23:59:59.000Z

129

GE Lighting Solutions: Proposed Penalty (2013-SE-4901) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

GE Lighting Solutions: Proposed Penalty (2013-SE-4901) GE Lighting Solutions: Proposed Penalty (2013-SE-4901) GE Lighting Solutions: Proposed Penalty (2013-SE-4901) March 5, 2013 DOE alleged in a Notice of Proposed Civil Penalty that General Electric Lighting Solutions manufactured and distributed noncompliant traffic signal modules in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. GE Lighting Solutions: Proposed Penalty (2013-SE-4901) More Documents & Publications Act One: NPCP (2013-CE-49001) Excellence Opto: Proposed Penalty (2013-CE-49002)

130

Thermo Products: Proposed Penalty (2011-SE-1603) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Thermo Products: Proposed Penalty (2011-SE-1603) Thermo Products: Proposed Penalty (2011-SE-1603) Thermo Products: Proposed Penalty (2011-SE-1603) September 28, 2011 DOE issued this Notice of Proposed Civil Penalty Notice to Thermo Products, LLC, alleging that the company certified several models of residential air conditioning heat pumps without performing testing required by DOE regulations. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Thermo Products: Proposed Penalty (2011-SE-1603) More Documents & Publications

131

GE Lighting Solutions: Proposed Penalty (2013-SE-4901) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2013-SE-4901) Proposed Penalty (2013-SE-4901) GE Lighting Solutions: Proposed Penalty (2013-SE-4901) March 5, 2013 DOE alleged in a Notice of Proposed Civil Penalty that General Electric Lighting Solutions manufactured and distributed noncompliant traffic signal modules in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. GE Lighting Solutions: Proposed Penalty (2013-SE-4901) More Documents & Publications Watermark: Proposed Penalty (2011-SW-2908) Act One: NPCP (2013-CE-49001)

132

Engineered Products: Proposed Penalty (2012-SE-5401) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2012-SE-5401) Proposed Penalty (2012-SE-5401) Engineered Products: Proposed Penalty (2012-SE-5401) July 19, 2012 DOE alleged in a Notice of Proposed Civil Penalty that Engineered Products Company manufactured/privately-labeled and distributed a number of units of noncompliant basic model 15701, a metal halide lamp fixture with a magnetic probe-start ballast in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Engineered Products: Proposed Penalty (2012-SE-5401) More Documents & Publications

133

Hydac: Noncompliance Determination (2012-SE-4107) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2012-SE-4107) Noncompliance Determination (2012-SE-4107) Hydac: Noncompliance Determination (2012-SE-4107) November 19, 2012 DOE issued a Notice of Noncompliance Determination to Hydac Technology Corporation finding that a variety of electric motor basic models do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Hydac must immediately notify each person (or company) to whom Hydac distributed the noncompliant products that the products do not meet Federal standards. In addition, Hydac must provide to DOE documents and records showing the number of units Hydac distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Hydac: Noncompliance Determination (2012-SE-4107)

134

Haier: Noncompliance Determination (2011-SE-1428) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Haier: Noncompliance Determination (2011-SE-1428) Haier: Noncompliance Determination (2011-SE-1428) Haier: Noncompliance Determination (2011-SE-1428) April 23, 2013 DOE issued a Notice of Noncompliance Determination to Haier America Trading, LLC finding that Haier model HMCM106EA, a freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Haier must immediately notify each person (or company) to whom Haier distributed the noncompliant products that the product does not meet Federal standards. In addition, Haier must provide to DOE documents and records showing the number of units Haier distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Haier: Noncompliance Determination (2011-SE-1428)

135

ET Industries: Noncompliance Determination (2012-SE-2902) | Department of  

NLE Websites -- All DOE Office Websites (Extended Search)

Noncompliance Determination (2012-SE-2902) Noncompliance Determination (2012-SE-2902) ET Industries: Noncompliance Determination (2012-SE-2902) May 24, 2013 DOE issued a Notice of Noncompliance Determination to ET Industries, Inc. finding that showerhead basic model TH-1 does not comport with the water conservation standards. DOE determined the product was noncompliant based on DOE testing. ET Industries must immediately notify each person (or company) to whom ET Industries distributed the noncompliant products that the product does not meet Federal standards. In addition, ET Industries must provide to DOE documents and records showing the number of units ET Industries distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. ET Industries: Noncompliance Determination (2012-SE-2902)

136

Royal Pacific: Proposed Penalty (2013-SE-33004) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Proposed Penalty (2013-SE-33004) Proposed Penalty (2013-SE-33004) Royal Pacific: Proposed Penalty (2013-SE-33004) July 5, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Royal Pacific, Ltd. failed to certify ceiling fans, ceiling fan light kits, medium base compact fluorescent lamps, and illuminated exit signs as compliant with the applicable energy conservation standards. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Royal Pacific: Proposed Penalty (2013-SE-33004) More Documents & Publications

137

Aspen: Noncompliance Determination (2010-SE-0305) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0-SE-0305) 0-SE-0305) Aspen: Noncompliance Determination (2010-SE-0305) May 28, 2010 DOE issued a Notice of Noncompliance Determination to Aspen Manufacturing finding that a variety of basic models of split-system air conditioning heat pumps do not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Aspen must immediately notify each person (or company) to whom Aspen distributed the noncompliant products that the product does not meet Federal standards. In addition, Aspen must provide to DOE documents and records showing the number of units Aspen distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Aspen: Noncompliance Determination (2010-SE-0305)

138

Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sunlight Lighting: Notice of Allowance (2010-SE-1402) Sunlight Lighting: Notice of Allowance (2010-SE-1402) Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) October 8, 2010 DOE issued a Notice of Allowance to Resume Distribution, authorizing Fuzhou Sunlight Lighting Electrical Appliance Company, Ltd. to resume distribution of one model of lamp. DOE had previously found certain Fuzhou products did not comport with the applicable energy conservation standards based on Fuzhou's testing. After determining that the original testing was not performed in accordance with DOE procedures, Fuzhou Sunlight provided new test data to DOE demonstrating that one model meets the applicable energy conservation standard when tested in accordance with DOE test procedures. Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402)

139

Campus Security Report 1 Campus seCurity  

E-Print Network (OSTI)

Campus Security Report 1 Campus seCurity and Fire saFety report UC Santa Cruz 2010 #12;Campus Security Report 2 UC Santa Cruz Geography ........................................................ 8 Security and Access to Campus Buildings and Grounds ........................................ 8

Wilmers, Chris

140

Development of Wind-and-React Bi-2212 Accelerator MagnetTechnology  

SciTech Connect

We report on the progress in our R&D program, targetedto develop the technology for the application of Bi2Sr2CaCu2Ox (Bi-2212)in accelerator magnets. The program uses subscale coils, wound frominsulated cables, to study suitable materials, heat treatmenthomogeneity, stability, and effects ofmagnetic field and thermal andelectro-magnetic loads. We have addressed material and reaction relatedissues and report onthe fabrication, heat treatment, and analysis ofsubscale Bi-2212 coils. Such coils can carry a current on the order of5000 A and generate, in various support structures, magnetic fields from2.6 to 9.9 T. Successful coils are therefore targeted towards a hybridNb3Sn-HTS magnet which will demonstrate the feasibility of Bi-2212 foraccelerator magnets, and open a new magnetic field realm, beyond what isachievable with Nb3Sn.

Godeke, A.; Cheng, D.; Dietderich, D.R.; English, C.D.; Felice,H.; Hannaford, C.R.; Prestemon, S.O.; Sabbi, G.; Scanlan, R.M.; Hikichi,Y.; Nishioka, J.; Hasegawa, T.

2007-08-28T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Dielectric relaxations and dielectric response in multiferroic BiFeO{sub 3} ceramics  

SciTech Connect

Single-phase multiferroic BiFeO{sub 3} ceramics were fabricated using pure precipitation-prepared BiFeO{sub 3} powder. Dielectric response of BiFeO{sub 3} ceramics was investigated over a wide range of temperature and frequency. Our results reveal that the BiFeO{sub 3} ceramic sintered at 700 deg. C exhibited high dielectric permittivity, and three dielectric relaxations were observed. A Debye-type dielectric relaxation at low temperatures (-50 to 20 deg. C) is attributed to the carrier hopping process between Fe{sup 2+} and Fe{sup 3+}. The other two dielectric relaxations at the temperature ranges 30-130 deg. C and 140-200 deg. C could be due to the grain boundary effect and the defect ordering and/or the conductivity, respectively.

Hunpratub, Sitchai; Thongbai, Prasit; Maensiri, Santi [Department of Physics, Khon Kaen University, Khon Kaen 40002 (Thailand); Yamwong, Teerapon [National Metals and Materials Technology Center (MTEC), Thailand Science Park, Pathumthani 12120 (Thailand); Yimnirun, Rattikorn [Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200 (Thailand)

2009-02-09T23:59:59.000Z

142

A validation of a ray-tracing tool used to generate bi-directional...  

NLE Websites -- All DOE Office Websites (Extended Search)

A validation of a ray-tracing tool used to generate bi-directional scattering distribution functions for complex fenestration systems Title A validation of a ray-tracing tool used...

143

Patterning of Bi2O3 films using laser-induced forward and backward transfer techniques  

Science Conference Proceedings (OSTI)

Patterning of Bi"2O"3 films was performed by laser-induced forward transfer (LIFT) and backward transfer (LIBT) techniques using the SHG beam of a Nd:YAG pulsed laser. Patterned parallel tracks of the transferred film were obtained on glass sample plates ... Keywords: AFM, Bi2O3 film, Laser-induced backward transfer, Laser-induced forward transfer, SEM, SHG Nd:YAG laser

H. Sakata; S. Chakraborty; M. Wakaki

2012-08-01T23:59:59.000Z

144

First-principles study of Se-intercalated graphite  

DOE Green Energy (OSTI)

Se-intercalated graphite compounds (Se-GICs) are considered as promising candidates for room-temperature thermoelectric cooling devices. Here the authors analyze the crystallographic structure and electronic properties of these materials within the framework of density-functional theory. First, the Adaptive-Coordinate Real-space Electronic Structure (ACRES) code is used to determine the stable structure of a representative stage-2 Se-GIC by relaxing atomic positions. The stable configuration is found to be a pendant-type structure, in which each selenium is bonded covalently to two atoms within the same carbon layer, causing a local distortion of the in-plane conjugation of the graphite. Then, they use the full potential linearized augmented plane wave (FP-LAPW) method to calculate the electronic band structure of the material and discuss its properties. Near the Fermi energy E{sub F}, there are wide bands originating from the host graphitic electronic structure and a few very narrow bands mainly of Se 4p character. The latter bands contribute to high peaks in the density of states close to E{sub F}. They show that this feature, although typical of many good thermoelectrics, does not necessarily imply high thermopower in the case of Se-GICs.

BARTKOWIAK,M.; MODINE,NORMAND A.; SOFO,J.O.; MAHAN,G.D.

2000-05-11T23:59:59.000Z

145

High-Temperature Microfluidic Synthesis of CdSe Nanocrystals in Nanoliter Droplets  

E-Print Network (OSTI)

Microfluidic Synthesis of CdSe Nanocrystals in Nanolitertemperature synthesis of CdSe nanocrystals in nanoliter-produced high quality CdSe nanocrystals, as verified by

Chan, Emory M.; Alivisatos, A. Paul; Mathies, Richard A.

2005-01-01T23:59:59.000Z

146

Mechanical and electronic-structure properties of compressed CdSe tetrapod nanocrystals  

E-Print Network (OSTI)

properties of compressed CdSe tetrapod nanocrystals Joshuamechanical properties of CdSe tetrapods under directionalstructural transformations in CdSe nanocrystals, it has only

Schrier, Joshua; Lee, Byounghak; Wang, Lin-Wang

2008-01-01T23:59:59.000Z

147

Leader Electronics: Noncompliance Determination (2010-SE-2301) | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2010-SE-2301) Noncompliance Determination (2010-SE-2301) Leader Electronics: Noncompliance Determination (2010-SE-2301) August 24, 2010 DOE issued a Notice of Noncompliance Determination to Leader Electronics, Inc. finding that "NU50-2093400-I3(NU50-21090-300F)" and "MU03-F050040-A1(MU03-Fl050-AKOS)" of external power supplies do not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. Leader Electronics must immediately notify each person (or company) to whom Leader Electronics distributed the noncompliant products that the products do not meet Federal standards. In addition, Leader Electronics must provide to DOE documents and records showing the number of units Leader Electronics

148

Central Moloney: Noncompliance Determination (2013-SE-4702) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Central Moloney: Noncompliance Determination (2013-SE-4702) Central Moloney: Noncompliance Determination (2013-SE-4702) Central Moloney: Noncompliance Determination (2013-SE-4702) March 11, 2013 DOE issued a Notice of Noncompliance Determination to Central Moloney, Inc. finding that liquid-immersed distribution transformer basic models 30300150 and 32500095 do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Central Moloney must immediately notify each person (or company) to whom Central Moloney distributed the noncompliant products that the products do not meet Federal standards. In addition, Central Moloney must provide to DOE documents and records showing the number of units Central Moloney distributed and to whom. The manufacturer and/or private labeler

149

Hicon: Noncompliance Determination (2013-SE-1426) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hicon: Noncompliance Determination (2013-SE-1426) Hicon: Noncompliance Determination (2013-SE-1426) Hicon: Noncompliance Determination (2013-SE-1426) February 14, 2013 DOE issued a Notice of Noncompliance Determination to Ningbo Hicon International Industry Company, Ltd. finding that model number BD-200, a compact chest freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Hiicon must immediately notify each person (or company) to whom Hicon distributed the noncompliant products that the product does not meet Federal standards. In addition, Hicon must provide to DOE documents and records showing the number of units Hicon distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil

150

Universal: Noncompliance Determination (2013-SE-26004) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Universal: Noncompliance Determination (2013-SE-26004) Universal: Noncompliance Determination (2013-SE-26004) Universal: Noncompliance Determination (2013-SE-26004) September 6, 2013 DOE issued a Notice of Noncompliance Determination to Universal Lighting Technologies, Inc. finding that fluorescent lamp ballast model B140R277HP does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Universal must immediately notify each person (or company) to whom Universal distributed the noncompliant products that the product does not meet Federal standards. In addition, Universal must provide to DOE documents and records showing the number of units Universal distributed and to whom. The manufacturer and/or private labeler of the product may be subject to

151

SeQuential Biofuels LLC | Open Energy Information  

Open Energy Info (EERE)

SeQuential Biofuels LLC SeQuential Biofuels LLC Jump to: navigation, search Name SeQuential Biofuels LLC Place Portland, Oregon Zip 97231 Sector Biofuels Product A biofuels marketing and distribution company with several offices in Oregon. Coordinates 45.511795°, -122.675629° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.511795,"lon":-122.675629,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

152

Fuzhou Sunlight: Noncompliance Determination (2010-SE-1402) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sunlight: Noncompliance Determination (2010-SE-1402) Sunlight: Noncompliance Determination (2010-SE-1402) Fuzhou Sunlight: Noncompliance Determination (2010-SE-1402) June 16, 2010 DOE issued a Notice of Noncompliance Determination to Fuzhou Sunlight Lighting Electrical Appliance Co., Ltd. finding that a variety of models of incandescent reflector lamps do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Fuzhou Sunlight must immediately notify each person (or company) to whom Fuzhou Sunlight distributed the noncompliant products that the products do not meet Federal standards. In addition, Fuzhou Sunlight must provide to DOE documents and records showing the number of units Fuzhou Sunlight distributed and to whom. The manufacturer

153

GE Lighting Solutions: Noncompliance Determination (2013-SE-4901) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2013-SE-4901) Noncompliance Determination (2013-SE-4901) GE Lighting Solutions: Noncompliance Determination (2013-SE-4901) January 11, 2013 DOE issued a Notice of Noncompliance Determination to General Electric Lighting Solutions finding that various models of traffic signal modules do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. GE Lighting Solutions must immediately notify each person (or company) to whom GE Lighting Solutions distributed the noncompliant products that the products do not meet Federal standards. In addition, GE Lighting Solutions must provide to DOE documents and records showing the number of units GE Lighting Solutions distributed and to whom. The manufacturer

154

Aspen: Noncompliance Determination (2011-SE-1602) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Aspen: Noncompliance Determination (2011-SE-1602) Aspen: Noncompliance Determination (2011-SE-1602) Aspen: Noncompliance Determination (2011-SE-1602) October 3, 2011 DOE issued a Notice of Noncompliance Determination to Aspen Manufacturing finding that indoor unit model AEW244 and outdoor unit model NCPC-424-3010 of residential split system central air conditioning system do not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. Aspen must immediately notify each person (or company) to whom Aspen distributed the noncompliant products that the product does not meet Federal standards. In addition, Aspen must provide to DOE documents and records showing the number of units Aspen distributed and to whom. The manufacturer and/or private labeler of

155

Precision: Noncompliance Determination (2013-SE-1410) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Precision: Noncompliance Determination (2013-SE-1410) Precision: Noncompliance Determination (2013-SE-1410) Precision: Noncompliance Determination (2013-SE-1410) April 10, 2013 DOE issued a Notice of Noncompliance Determination to Precision Trading Corp. finding that Precision model Premium PFR515M, a freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Precision must immediately notify each person (or company) to whom Precision distributed the noncompliant products that the product does not meet Federal standards. In addition, Precision must provide to DOE documents and records showing the number of units Precision distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

156

Philips: Noncompliance Determination (2012-SE-2605) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2012-SE-2605) Noncompliance Determination (2012-SE-2605) Philips: Noncompliance Determination (2012-SE-2605) August 31, 2012 DOE issued a Notice of Noncompliance Determination to Philips Lighting Electronics N. A. finding that basic model VEL-1S40-SC, a fluorescent lamp ballast, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. Philips must immediately notify each person (or company) to whom Philips distributed the noncompliant products that the product does not meet Federal standards. In addition, Philips must provide to DOE documents and records showing the number of units Philips distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

157

Universal: Noncompliance Determination (2013-SE-26004) | Department of  

NLE Websites -- All DOE Office Websites (Extended Search)

Universal: Noncompliance Determination (2013-SE-26004) Universal: Noncompliance Determination (2013-SE-26004) Universal: Noncompliance Determination (2013-SE-26004) September 6, 2013 DOE issued a Notice of Noncompliance Determination to Universal Lighting Technologies, Inc. finding that fluorescent lamp ballast model B140R277HP does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Universal must immediately notify each person (or company) to whom Universal distributed the noncompliant products that the product does not meet Federal standards. In addition, Universal must provide to DOE documents and records showing the number of units Universal distributed and to whom. The manufacturer and/or private labeler of the product may be subject to

158

Sears: Noncompliance Determination (2011-SE-1418) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Sears: Noncompliance Determination (2011-SE-1418) Sears: Noncompliance Determination (2011-SE-1418) Sears: Noncompliance Determination (2011-SE-1418) June 26, 2012 DOE issued a Notice of Noncompliance Determination to Sears, Roebuck & Co. finding that Kenmore-brand model number 255.19502010 ("19502") and Kenmore-brand model number 255.19702010 ("19702"), compact chest freezers, do not comport with the energy conservation standards. DOE determined the products were noncompliant based on DOE testing. Sears must immediately notify each person (or company) to whom Sears distributed the noncompliant products that the products do not meet Federal standards. In addition, Sears must provide to DOE documents and records showing the number of units Sears distributed and to whom. The manufacturer and/or private labeler of

159

Cooper: Noncompliance Determination (2012-SE-4701) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cooper: Noncompliance Determination (2012-SE-4701) Cooper: Noncompliance Determination (2012-SE-4701) Cooper: Noncompliance Determination (2012-SE-4701) June 12, 2012 DOE issued a Notice of Noncompliance Determination to Cooper Power Systems, LLC finding that basic models 277-99.28, 277-99.26, and 277-99.22 of distribution transformers do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Cooper must immediately notify each person (or company) to whom Cooper distributed the noncompliant products that the products do not meet Federal standards. In addition, Cooper must provide to DOE documents and records showing the number of units Cooper distributed and to whom. The manufacturer and/or private labeler of the product may

160

Teddico: Noncompliance Determination (2012-SE-5409) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Teddico: Noncompliance Determination (2012-SE-5409) Teddico: Noncompliance Determination (2012-SE-5409) Teddico: Noncompliance Determination (2012-SE-5409) November 20, 2012 DOE issued a Notice of Noncompliance Determination to The Electrical Design, Development and Implementation Company d/b/a Teddico finding that a variety of basic models of magnetic probe-start metal halide lamp fixtures do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Teddico must immediately notify each person (or company) to whom Teddico distributed the noncompliant products that the products do not meet Federal standards. In addition, Teddico must provide to DOE documents and records showing the number of units Teddico distributed and to whom. The

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Simkar: Noncompliance Determination (2012-SE-5408) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2012-SE-5408) Noncompliance Determination (2012-SE-5408) Simkar: Noncompliance Determination (2012-SE-5408) December 5, 2012 DOE issued a Notice of Noncompliance Determination to Simkar Corporation finding that magnetic probe-start and pulse-start basic models of metal halide lamp fixtures do not comport with the energy conservation standards. DOE determined the products were noncompliant based on Simkar's own testing. Simkar must immediately notify each person (or company) to whom Simkar distributed the noncompliant products that the products do not meet Federal standards. In addition, Simkar must provide to DOE documents and records showing the number of units Simkar distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

162

Felix Storch: Noncompliance Determination (2011-SE-1420) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Felix Storch: Noncompliance Determination (2011-SE-1420) Felix Storch: Noncompliance Determination (2011-SE-1420) Felix Storch: Noncompliance Determination (2011-SE-1420) October 5, 2011 DOE issued a Notice of Noncompliance Determination to Felix Storch, Inc., finding that model number CF11ES, a chest freezer does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Felix Storch must immediately notify each person (or company) to whom Felix Storch distributed the noncompliant products that the product does not meet Federal standards. In addition, Felix Storch must provide to DOE documents and records showing the number of units Felix Storch distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil

163

Bigwall: Noncompliance Determination (2013-SE-1412) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Bigwall: Noncompliance Determination (2013-SE-1412) Bigwall: Noncompliance Determination (2013-SE-1412) Bigwall: Noncompliance Determination (2013-SE-1412) April 10, 2013 DOE issued a Notice of Noncompliance Determination to Bigwall Enterprises, Inc. finding that freezer model W1CF106 under the Wellington brand (''the Wellington W1CF106") does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Bigwall Enterprises, Inc. must immediately notify each person (or company) to whom Bigwall distributed the noncompliant products that the product does not meet Federal standards. In addition, Bigwall must provide to DOE documents and records showing the number of units Bigwall distributed and to whom. The manufacturer and/or private labeler of the

164

Leader Electronics: Notice of Allowance (2010-SE-2301) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Leader Electronics: Notice of Allowance (2010-SE-2301) Leader Electronics: Notice of Allowance (2010-SE-2301) Leader Electronics: Notice of Allowance (2010-SE-2301) September 13, 2010 DOE issued a Notice of Allowance to Resume Distribution to Leader Electronics Inc., authorizing Leader Electronics to resume distribution of the external power supply model "MU03-F050040-A1(MU03-F1050-AKOS)". DOE had previously issued a Notice of Non-Compliance Determination based on test results submitted by Leader Electronics showing that certain models were noncompliant. After an internal review, Leader Electronics determined that the original test results reported to DOE were incorrect. Leader has submitted complete test data, which DOE has reviewed closely, and DOE has determined that the model complies with the applicable energy conservation

165

CNA: Noncompliance Determination (2013-SE-1430) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Noncompliance Determination (2013-SE-1430) Noncompliance Determination (2013-SE-1430) CNA: Noncompliance Determination (2013-SE-1430) July 1, 2013 DOE issued a Notice of Noncompliance Determination to CNA International, Inc., d/b/a MC Appliance Corp. finding that Magic Chef-brand model HMCF7W ("CNA model HMCF7W") does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. CNA must immediately notify each person (or company) to whom CNA distributed the noncompliant products that the product does not meet Federal standards. In addition, CNA must provide to DOE documents and records showing the number of units CNA distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

166

Golden Opportunity: Noncompliance Determination (2013-SE-1418) | Department  

NLE Websites -- All DOE Office Websites (Extended Search)

Noncompliance Determination (2013-SE-1418) Noncompliance Determination (2013-SE-1418) Golden Opportunity: Noncompliance Determination (2013-SE-1418) April 24, 2013 DOE issued a Notice of Noncompliance Determination to Golden Opportunity, Inc. finding that freezer models Golden GFC51 and Golden GFC69 do not comport with the energy conservation standards. DOE determined the products were noncompliant based on DOE testing. Golden Opportunity must immediately notify each person (or company) to whom Golden Opportunity distributed the noncompliant products that the products do not meet Federal standards. In addition, Golden Opportunity must provide to DOE documents and records showing the number of units Golden Opportunity distributed and to whom. The manufacturer and/or private labeler of the products may be

167

Bigwall: Noncompliance Determination (2013-SE-1412) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2013-SE-1412) Noncompliance Determination (2013-SE-1412) Bigwall: Noncompliance Determination (2013-SE-1412) April 10, 2013 DOE issued a Notice of Noncompliance Determination to Bigwall Enterprises, Inc. finding that freezer model W1CF106 under the Wellington brand (''the Wellington W1CF106") does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Bigwall Enterprises, Inc. must immediately notify each person (or company) to whom Bigwall distributed the noncompliant products that the product does not meet Federal standards. In addition, Bigwall must provide to DOE documents and records showing the number of units Bigwall distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

168

Excitons in single and double GaAs/AlGaAs/ZnSe/Zn(Cd)MnSe heterovalent quantum wells  

Science Conference Proceedings (OSTI)

Exciton photoluminescence spectra, photoluminescence excitation spectra, and magnetophotoluminescence spectra of single (GaAs/AlGaAs/ZnMnSe) and double (GaAs/AlGaAs/ZnSe/ZnCdMnSe) heterovalent quantum wells formed by molecular beam epitaxy are studied. It is shown that the exciton absorption spectrum of such quantum wells mainly reproduces the resonant exciton spectrum expected for usual quantum wells with similar parameters, while the radiative exciton recombination have substantial distinctions, in particular the additional localization mechanism determined by defects generated by heterovalent interface exists. The nature of these localization centers is not currently clarified; their presence leads to broadening of photoluminescence lines and to an increase in the Stokes shift between the peaks of luminescence and absorption, as well as determining the variation in the magnetic g factor of bound exciton complexes.

Toropov, A. A., E-mail: toropov@beam.ioffe.ru; Kaibyshev, V. Kh.; Terent'ev, Ya. V.; Ivanov, S. V.; Kop'ev, P. S. [Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)

2011-02-15T23:59:59.000Z

169

Strong downslope wind events in Ammassalik, SE Greenland  

Science Conference Proceedings (OSTI)

Ammassalik in SE Greenland is known for strong winds events that can reach hurricane intensity and cause severe destruction in the local town. Yet, these winds and their impact on the nearby fjord and shelf region have not been studied in detail.

M. Oltmanns; F. Straneo; G. W. K. Moore; S. H. Mernild

170

Surface Enhanced Raman Spectroscopy of Pyridine on CdSe/ZnBeSe Quantum Dots Grown by MBE  

SciTech Connect

Using Surface Enhanced Raman Spectroscopy (SERS), we observed Raman enhancements (104-105) for pyridine molecules adsorbed on a II-VI semiconductor CdSe/ZnBeSe sample of uncapped self-assembled quantum dots produced by molecular beam epitaxy. When a monolayer of pyridine is adsorbed on these structures, excitation at 488 nm produces intense Raman spectra a very large enhancement of the a1, b1 and b2 modes. This indicates the presence of charge-transfer as a contributor to the enhacement.

Livingstone, Richard [City College of New York, New York, NY (United States)

2010-08-06T23:59:59.000Z

171

The Usefulness of Bi-Level Switching; Original Technical Note: November 1998. Revised August, 1999  

SciTech Connect

California's Title 24 Energy Efficiency Building Standard requires multiple lighting level control in all individual offices. Usually, this requirement is fulfilled using bi-level switching. With bi-level switching, each office occupant is provided with two wall switches near the doorway to control their lights. In a typical installation, one switch would control 1/3 of the fluorescent lamps in the ceiling lighting system, while the other switch would control the remaining 2/3 of the lamps. This allows four possible light levels: OFF, 1/3, 2/3 and FULL lighting. Because it has been required by building code since 1983, bi-level switching is common in California office buildings. However, there is no published evidence showing that occupants sometimes use just one switch rather than just switching on both switches when entering the room. Consequently, some have questioned whether bi-level switching is a necessary or desirable requirement for typical office buildings. In fact, the draft national standard, ASHRAE Standard 90.1-1989K apparently does not require bi-level switching at all.

Building Technologies Department

1998-11-01T23:59:59.000Z

172

A Comparison of Molten Sn and Bi for Solid Oxide Fuel Cell Anodes  

Science Conference Proceedings (OSTI)

Molten Sn and Bi were examined at 973 and 1073 K for use as anodes in solid oxide fuel cells with yttria-stabilized zirconia (YSZ) electrolytes. Cells were operated under battery conditions, with dry He flow in the anode compartment, to characterize the electrochemical oxidation of the metals at the YSZ interface. For both metals, the open-circuit voltages (OCVs) were close to that expected based on their oxidation thermodynamics, ~0.93 V for Sn and ~0.48 V for Bi. With Sn, the cell performance degraded rapidly after the transfer of approximately 0.5-1.5 Ccm{sup 2} of charge due to the formation of a SnO{sub 2} layer at the YSZ interface. At 973 K, the anode impedance at OCV for freshly reduced Sn was approximately 3 {ohm}cm{sup 2} but this increased to well over 250 {ohm}cm{sup 2} after the transfer of of charge. Following the transfer of 8.2 Ccm{sup 2} at 1073 K, the formation of a 10{micro}m thick SnO{sub 2} layer was confirmed by scanning electron microscopy. With Bi, the OCV anode impedance at 973 K was less than 0.25 {ohm}cm{sup 2} and remained constant until essentially all of the Bi had been oxidized to BiO{sub 2}. Some implications of these results for direct carbon fuel cells are discussed.

Jayakumar, A.; Lee, Sang Bok; Horns, A.; Vohs, J. M.; Gorte, R. J.

2010-01-01T23:59:59.000Z

173

File:EIA-PSJ-SE-GAS.pdf | Open Energy Information  

Open Energy Info (EERE)

PSJ-SE-GAS.pdf PSJ-SE-GAS.pdf Jump to: navigation, search File File history File usage Paradox-San Juan Basin, Southeast Part By 2001 Gas Reserve Class Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(5,100 × 6,600 pixels, file size: 13.13 MB, MIME type: application/pdf) Description Paradox-San Juan Basin, Southeast Part By 2001 Gas Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Utah, Colorado, New Mexico, Arizona File history Click on a date/time to view the file as it appeared at that time.

174

Haier: Noncompliance Determination (2011-SE-1408) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

08) 08) Haier: Noncompliance Determination (2011-SE-1408) October 18, 2011 DOE issued a Notice of Noncompliance Determination to Haier America Trading, L.L.C. finding that model number HNCM070, a chest freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Haier must immediately notify each person (or company) to whom Haier distributed the noncompliant products that the product does not meet Federal standards. In addition, Haier must provide to DOE documents and records showing the number of units Haier distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Haier: Noncompliance Determination (2011-SE-1408) More Documents & Publications

175

Advanced Distributor Products: Noncompliance Determination (2010-SE-0304) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advanced Distributor Products: Noncompliance Determination Advanced Distributor Products: Noncompliance Determination (2010-SE-0304) Advanced Distributor Products: Noncompliance Determination (2010-SE-0304) May 28, 2010 DOE issued a Notice of Noncompliance Determination to Advanced Distributor Products finding that basic model N2H348A(G)KB* + H,GE50560 + *8MPV125 and basic model N2H360A(G)KB* + H,GE50560 + MV16J22**B* do not comport with the energy conservation standards. DOE determined the products were noncompliant based on ADP's certification. ADP must immediately notify each person (or company) to whom ADP distributed the noncompliant products that the product does not meet Federal standards. In addition, ADP must provide to DOE documents and records showing the number of units ADP distributed and to whom. The manufacturer and/or private labeler of the

176

Localizing Micro-grids Research for the SE Asian Region  

NLE Websites -- All DOE Office Websites (Extended Search)

Localizing Micro-grids Research for the SE Asian Region Localizing Micro-grids Research for the SE Asian Region Speaker(s): Cheng-Guan (Michael) Quah Valerie Choy Date: December 3, 2010 - 12:00pm Location: 90-3122 This presentation discusses developments (and test-beds) of micro-grids and distributed generation systems that are on-going in Singapore and poses the question as to whether simpler versions of such systems would be applicable to meet the challenges of rural electrification and energy poverty particularly those of its closest neighbors. Southeast Asia is an ethnically and culturally diverse region comprising more than 10 nations where 160 million people still live without electricity. Off-grid electrification for rural village communities and eco-resorts using DG and micro-grid systems are conceivable but many technical, political, cultural

177

Haier: Noncompliance Determination (2011-SE-1428) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

28) 28) Haier: Noncompliance Determination (2011-SE-1428) April 23, 2013 DOE issued a Notice of Noncompliance Determination to Haier America Trading, LLC finding that Haier model HMCM106EA, a freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Haier must immediately notify each person (or company) to whom Haier distributed the noncompliant products that the product does not meet Federal standards. In addition, Haier must provide to DOE documents and records showing the number of units Haier distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Haier: Noncompliance Determination (2011-SE-1428) More Documents & Publications

178

File:EIA-PSJ-SE-BOE.pdf | Open Energy Information  

Open Energy Info (EERE)

SE-BOE.pdf SE-BOE.pdf Jump to: navigation, search File File history File usage Paradox-San Juan Basin, Southeast Part By 2001 BOE Reserve Class Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(5,100 × 6,600 pixels, file size: 13.15 MB, MIME type: application/pdf) Description Paradox-San Juan Basin, Southeast Part By 2001 BOE Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Utah, Colorado, New Mexico, Arizona File history Click on a date/time to view the file as it appeared at that time.

179

A Se-mash Hit | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

A Se-mash Hit A Se-mash Hit Developer Data Web Services Source Code Challenges Semantic Web Blogs Let's Talk Developers You are here Data.gov » Communities » Developers A Se-mash Hit Submitted by Data.gov Administrator on Tue, 12/18/2012 - 6:11pm Data.gov Mash-A-Thon 1 builds Web 3.0 apps and enthusiasm A lecture by Professor Jim Hendler at the Data.gov Mash-a-Thon 2010 For two days in August, a classroom in Washington, D.C.'s Dupont Circle filled with Federal developers, students and semantic web experts. They shared one purpose: to create a new generation of "linked-data" applications called "mashups" that use Data.gov's free public data in new and innovative ways. The U.S. government is in the vanguard of understanding and using the semantic web, which will transform the World Wide Web. Data will "talk" to one another,

180

Kinetics of Ge-Se-In Film Growth  

SciTech Connect

The processes of vacuum evaporation and condensation in the Ge-Se-In system were investigated. Thin amorphous films were deposited by modified thermal evaporation from previously synthesized non-crystalline (GeSe{sub y}){sub 1-x}In{sub x} ingots, where x = 0, 5, 10, 15, 20 and y = 4, 5 and 6. The specific evaporation rate was determined by measuring of the mass of evaporator before evaporation and the mass of empty evaporator after evaporation in temperature range of evaporation (500-800) K. The substrate temperature was varied in the range (300-430) K to study the condensation process and specific condensation rate was determined by measuring of the substrate mass before and after condensation. The condensation energy of the (GeSe{sub y}){sub 1-x}In{sub x} layers steady increases at indium addition.The thin films studied by transmission electron microscopy (TEM) and electron microdiffraction (EMD) reveal homogeneous and amorphous structure. The layer composition determined by Auger electron spectroscopy is close to that of the corresponded bulk samples.

Stoilova, A.; Petkov, P.; Nedeva, Y. [Department of Physics, University of Chemical Technology and Metallurgy, 1756 Sofia (Bulgaria); Monchev, B. [Institute of Electrochemistry and Energy Systems, BAS, 1113 Sofia (Bulgaria)

2010-01-21T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Hydrogen in polar intermetallics: Syntheses and structures of the ternary Ca5Bi3D0.93, Yb5Bi3Hx, and Sm5Bi3H~1 by powder neutron or single crystal X-ray diffraction  

DOE Green Energy (OSTI)

The syntheses of the title compounds are described in detail. Structural characterizations from refinements of single crystal X-ray diffraction data for Yb{sub 5}Bi{sub 3}H{sub x} and Sm{sub 5}Bi{sub 3}H{sub 1} and of powder neutron diffraction data for Ca{sub 5}Bi{sub 3}D{sub 0.93(3)} are reported. These confirm that all three crystallize with the heavy atom structure type of {beta}-Yb{sub 5}Sb{sub 3}, and the third gives the first proof that the deuterium lies in the center of nominal calcium tetrahedra, isostructural with the Ca{sub 5}Sb{sub 3}F-type structure. These Ca and Yb phases are particularly stable with respect to dissociation to Mn{sub 5}Si{sub 3}-type product plus H{sub 2}. Some contradictions in the literature regarding Yb{sub 5}Sb{sub 3} and Yb{sub 5}Sb{sub 3}H{sub x} phases are considered in terms of adventitious hydrogen impurities that are generated during reactions in fused silica containers at elevated temperatures.

Leon-Escamilla, E. Alejandro; Dervenagas, Panagiotis; Stasis, Constantine; Corbett, John D.

2010-01-01T23:59:59.000Z

182

Experimental Realization of a Three-Dimensional Topological Insulator, Bi 2Te3  

SciTech Connect

Three-dimensional topological insulators are a new state of quantum matter with a bulk gap and odd number of relativistic Dirac fermions on the surface. By investigating the surface state of Bi{sub 2}Te{sub 3} with angle-resolved photoemission spectroscopy, we demonstrate that the surface state consists of a single nondegenerate Dirac cone. Furthermore, with appropriate hole doping, the Fermi level can be tuned to intersect only the surface states, indicating a full energy gap for the bulk states. Our results establish that Bi{sub 2}Te{sub 3} is a simple model system for the three-dimensional topological insulator with a single Dirac cone on the surface. The large bulk gap of Bi{sub 2}Te{sub 3} also points to promising potential for high-temperature spintronics applications.

Siemons, W.

2010-02-24T23:59:59.000Z

183

Lattice-matching periodic array of misfit dislocations: Heteroepitaxy of Bi(111) on Si(001)  

SciTech Connect

In spite of the large lattice mismatch between Bi and Si, it is possible to grow expitaxial Bi(111) films on Si(001) substrates, which are atomically smooth and almost free of defects. The remaining lattice mismatch of 2.3% is accommodated by the formation of a periodic array of edge-type dislocations confined to the interface. The strain fields surrounding each dislocation cause a weak periodic surface undulation, which results in the splitting of all spots in low-energy electron diffraction (LEED). From a high resolution spot profile analyzing LEED study, an amplitude of 0.66 A and a separation of 200 A were derived. Comparison with elasticity theory gives a full lattice spacing of the Si surface as a Burgers vector b-vector=(1/2)[110] of the misfit dislocation array. With increasing thickness, the Bi film relaxes toward its bulk lattice constant.

Jnawali, G.; Hattab, H.; Meyer zu Heringdorf, F.-J.; Krenzer, B.; Horn-von Hoegen, M. [Department of Physics and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Lotharstrasse 1, 47048 Duisburg (Germany)

2007-07-15T23:59:59.000Z

184

Doping-Dependent Nodal Fermi Velocity in Bi-2212 Revealed by High-Resolution ARPES  

Science Conference Proceedings (OSTI)

The improved resolution of laser-based angle-resolved photoemission spectroscopy (ARPES) allows reliable access to fine structures in the spectrum. We present a systematic, doping-dependent study of a recently discovered low-energy kink in the nodal dispersion of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} (Bi-2212), which demonstrates the ubiquity and robustness of this kink in underdoped Bi-2212. The renormalization of the nodal velocity due to this kink becomes stronger with underdoping, revealing that the nodal Fermi velocity is non-universal, in contrast to assumed phenomenology. This is used together with laser-ARPES measurements of the gap velocity, v{sub 2}, to resolve discrepancies with thermal conductivity measurements.

Vishik, I. M.

2011-08-19T23:59:59.000Z

185

Evidence for long range movement of Bi-2212 within the filament bundle on melting and its significant effect on J  

E-Print Network (OSTI)

. The measurement of the Ag area (the white fraction of the images) for each sample was made by image analysisEvidence for long range movement of Bi-2212 within the filament bundle on melting and its.1088/0953-2048/24/7/075016 Evidence for long range movement of Bi-2212 within the filament bundle on melting and its significant

McQuade, D. Tyler

186

The comprehensive phase evolution for Bi[subscript 2]Te[subscript 3] topological compound as function of pressure  

Science Conference Proceedings (OSTI)

The recently discovered three-dimensional topological insulator Bi{sub 2}Te{sub 3} is studied as function of pressure in terms of crystal structures, resistance, and Hall coefficient. The superconductivity is found in phase I (ambient phase) Bi{sub 2}Te{sub 3} with T{sub c}-3 K, which is related to the topological features. The evolution of crystal structure with pressure is investigated by high pressure synchrotron radiation experiments that reveal structural transitions occurring at about 8 GPa, 13 GPa, and 16 GPa, respectively. Furthermore, the high pressure phases of Bi{sub 2}Te{sub 3} are also superconducting but with much higher T{sub c}-8 K. The superconducting transitions are compared with those for Bi, Te elements. A global phase diagram of Bi{sub 2}Te{sub 3} as function of pressure up to 30 GPa is obtained.

Zhang, S.J.; Zhang, J.L.; Yu, X.H.; Zhu, J.; Kong, P.P.; Feng, S.M.; Liu, Q.Q.; Yang, L.X.; Wang, X.C.; Cao, L.Z.; Yang, W.G.; Wang, L.; Mao, H.K.; Zhao, Y.S.; Liu, H.Z.; Dai, X.; Fang, Z.; Zhang, S.C.; Jin, C.Q. (Stanford); (Harbin); (UST - China); (CIW); (Chinese Aca. Sci.); (LANL)

2012-06-26T23:59:59.000Z

187

Light emission from InGaAs:Bi/GaAs quantum wells at 1.3 {mu}m  

Science Conference Proceedings (OSTI)

Highly strained InGaAs:Bi quantum wells (QWs) were grown on (001)-oriented GaAs substrates by molecular beam epitaxy (MBE). Photoluminescence (PL) reveals strong improvements in the optical properties evidenced by 10 times enhancement in PL intensity and extended emission wavelength up to 1.29 {mu}m when Bi is introduced to InGaAs/GaAs QWs. The improved optical quality results from the Bi surfactant effect as well as the Bi incorporation. Post growth thermal annealing shows that Bi atoms in InGaAs/GaAs QWs do not show good thermal stability at 650 Degree-Sign C and tend to diffuse out of the QWs resulting in large wavelength blue-shifts.

Ye Hong; Song Yuxin; Wang Shumin [Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg SE-41296 (Sweden); Gu Yi [Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China)

2012-12-15T23:59:59.000Z

188

Void and phase evolution during the processing of Bi-2212 superconducting wires monitored by combined fast synchrotron micro-tomography and x-ray diffraction  

E-Print Network (OSTI)

Void and phase evolution during the processing of Bi-2212 superconducting wires monitored.1088/0953-2048/24/11/115004 Void and phase evolution during the processing of Bi-2212 superconducting wires monitored by combined-2201 impurity phase decomposes before the Bi-2212 starts to melt. These lens-shaped voids grow

McQuade, D. Tyler

189

Bi[NC{sub 5}H{sub 3}(CO{sub 2}){sub 2}](OH{sub 2}){sub x}F (x=1 and 2): New one-dimensional Bi-coordination materials-Reversible hydration and topotactic decomposition to {alpha}-Bi{sub 2}O{sub 3}  

SciTech Connect

Two one-dimensional bismuth-coordination materials, Bi[NC{sub 5}H{sub 3}(CO{sub 2}){sub 2}](OH{sub 2}){sub x}F (x=1 and 2), have been synthesized by hydrothermal reactions using Bi{sub 2}O{sub 3}, 2,6-NC{sub 5}H{sub 3}(CO{sub 2}H){sub 2}, HF, and water at 180 Degree-Sign C. Structures of the two materials were determined by single-crystal X-ray diffraction. Although they have different crystal structures, both Bi-organic materials shared a common structural motif, a one-dimensional chain structure consisting of Bi{sup 3+} cations and pyridine dicarboxylate linkers. Detailed structural analyses include infrared spectroscopy, thermogravimetric analysis, and reversible hydration reactions for the coordinated water molecules were reported. Also, thermal decomposition of the rod-shaped Bi[NC{sub 5}H{sub 3}(CO{sub 2}){sub 2}](OH{sub 2})F single crystals at 800 Degree-Sign C led to {alpha}-Bi{sub 2}O{sub 3} that maintained the same morphology of the original crystals. - Graphical abstract: Calcination of the Bi[NC{sub 5}H{sub 3}(CO{sub 2}){sub 2}](OH{sub 2})F single crystals at 800 Degree-Sign C results in the {alpha}-Bi{sub 2}O{sub 3} rods that maintain the original morphology of the crystals. Highlights: Black-Right-Pointing-Pointer Synthesis of one-dimensional chain Bi-organic frameworks. Black-Right-Pointing-Pointer Reversible hydration reactions of Bi[NC{sub 5}H{sub 3}(CO{sub 2}){sub 2}](OH{sub 2})F. Black-Right-Pointing-Pointer Topotactic decomposition maintaining the same morphology of the original crystals.

Jeon, Hye Rim [Department of Chemistry Education, Chung-Ang University, Seoul 156-756 (Korea, Republic of); Lee, Dong Woo [Department of Chemistry, Chung-Ang University, Seoul 156-756 (Korea, Republic of); Ok, Kang Min, E-mail: kmok@cau.ac.kr [Department of Chemistry, Chung-Ang University, Seoul 156-756 (Korea, Republic of)

2012-03-15T23:59:59.000Z

190

Spectroscopy, photo-physics, and time resolved exciton dynamics of GaSe quantum dots  

E-Print Network (OSTI)

of Carrier Relaxation Dynamics in Type II CdSe/CdTe TetrapodHigh Quality Zinc Blende CdSe Nanocrystals, J. Phys. Chem.Shape Tuning of Type II CdTe-CdSe Colloidal Nanocrystal

Mirafzal, Hoda

2011-01-01T23:59:59.000Z

191

Shape dependence of band-edge exciton fine structure in CdSe nanocrystals  

E-Print Network (OSTI)

exciton fine structure in CdSe nanocrystals Qingzhong Zhao,fine structure of wurtzite CdSe nanocrystals is investigatedexciton fine structure of CdSe nanocrystals is determined by

Zhao, Qingzhong

2008-01-01T23:59:59.000Z

192

Strain-dependent photoluminescence behavior in three geometries of CdSe/CdS nanocrystals  

E-Print Network (OSTI)

X. et al. Shape control of CdSe nanocrystals. Nature 404,of nearly monodisperse CdSe/CdS core/shell nanocrystalsgrowth of highly luminescent CdSe/CdS nanoheterostructures

Choi, Charina L

2010-01-01T23:59:59.000Z

193

Preparation of Bi-Sr-Ca-Cu-O superconductors from oxide-glass precursors  

DOE Patents (OSTI)

A superconductor and precursor therefor from oxide mixtures of Ca, Sr, Bi and Cu. Glass precursors quenched to elevated temperatures result in glass free of crystalline precipitates having enhanced mechanical properties. Superconductors are formed from the glass precursors by heating in the presence of oxygen to a temperature below the melting point of the glass.

Hinks, David G. (Lemont, IL); Capone, II, Donald W. (Northbridge, MA)

1992-01-01T23:59:59.000Z

194

Development of Wind-and-React Bi-2212 Accelerator Magnet Technology  

SciTech Connect

We report on the progress in our R&D program, targeted to develop the technology for the application of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} (Bi-2212) in accelerator magnets. The program uses subscale coils, wound from insulated cables, to study suitable materials, heat treatment homogeneity, stability, and effects of magnetic field and thermal and electro-magnetic loads. We have addressed material and reaction related issues and report on the fabrication, heat treatment, and analysis of subscale Bi-2212 coils. Such coils can carry a current on the order of 5000 A and generate, in various support structures, magnetic fields from 2.6 to 9.9 T. Successful coils are therefore targeted towards a hybrid Nb{sub 3}Sn-HTS magnet which will demonstrate the feasibility of Bi-2212 for accelerator magnets, and open a new magnetic field realm, beyond what is achievable with Nb{sub 3}Sn.

Cheng, Daniel; Dietderich, Daniel R.; English, C.D.; Felice, Helene; Hannaford, Charles R.; Prestemon, Soren O.; Sabbi, GianLuca; Scanlan, Ron M.; Hikichi, Y.; Nishioka, J.; Hasegawa, T.; Godeke, A.

2007-06-01T23:59:59.000Z

195

Building Thai WordNet with a Bi-directional Translation Method  

Science Conference Proceedings (OSTI)

This research presents a method of building Thai WordNet using an automatic bi-directional translation system with two EnglishThai dictionaries, LEXiTRON and Thiengburanathum Dictionary. The former was compiled using a corpus-based approach, whilst the ...

Dhanon Leenoi; Thepchai Supnithi; Wirote Aroonmanakun

2009-12-01T23:59:59.000Z

196

WInd-and-react Bi-2212 coil development for accelerator magnets  

SciTech Connect

Sub-scale coils are being manufactured and tested at Lawrence Berkeley National Laboratory in order to develop wind-and-react Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} (Bi-2212) magnet technology for future graded accelerator magnet use. Previous Bi-2212 coils showed significant leakage of the conductors core constituents to the environment, which can occur during the partial melt reaction around 890 C in pure oxygen. The main origin of the observed leakage is intrinsic leakage of the wires, and the issue is therefore being addressed at the wire manufacturing level. We report on further compatibility studies, and the performance of new sub-scale coils that were manufactured using improved conductors. These coils exhibit significantly reduced leakage, and carry currents that are about 70% of the witness wire critical current (I{sub c}). The coils demonstrate, for the first time, the feasibility of round wire Bi-2212 conductors for accelerator magnet technology use. Successful high temperature superconductor coil technology will enable the manufacture of graded accelerator magnets that can surpass the, already closely approached, intrinsic magnetic field limitations of Nb-based superconducting magnets.

Godeke, A.; Acosta, P.; Cheng, D.; Dietderich, D. R.; Mentink, M. G. T.; Prestemon, S. O.; Meinesz, M.; Hong, S.; Huang, Y.; Miao, H.; Parrell, J.; Sabbi, G.L.

2009-10-13T23:59:59.000Z

197

Spin polarized current injection through HgBr{sub 2} intercalated Bi2212 intrinsic Josephson junctions.  

Science Conference Proceedings (OSTI)

To investigate the effect of polarized current on tunneling characteristics of intrinsic Josephson junctions (IJJs), spin-polarized and spin-degenerate current have been injected through the c-axis of HgBr{sub 2} intercalated Bi{sub 2.1}Sr{sub 1.5}Ca{sub 1.4}Cu{sub 2}O{sub 8+delta} (Bi2212) single crystals on which 10 times 10 mum{sup 2} mesas have been fabricated. These two spin conditions are achieved by depositing either Au (15 nm)/Co (80 nm)/Au (156 nm) multilayers or single Au film on HgBr{sub 2} intercalated Bi2212 with T{sub c} = 74 K followed by photolithography and Ar ion beam etching. The I-V characteristics have been measured with and without a magnetic field parallel to c-axis at 4.2 K. A fine, soft Au wire is used to make a gentle mechanical contact on the top of a particular mesa in the array. Tunneling conductance characteristics were obtained and the magnetic field dependence of sumgap voltage peaks was investigated. These peaks do not change in position with increasing magnetic field for both contact configurations. In addition, the temperature dependence of tunneling characteristics of the IJJs are obtained and existence of pseudogap feature is observed above T{sub c} for HgBr{sub 2} intercalated Bi2212.

Ozyuzer, L.; Kurter, C.; Ozdemir, M.; Zasadzinski, J. F.; Gray, K. E.; Hinks, D. G. (Materials Science Division); (Izmir Inst. of Tech.); (Illinois Inst. of Tech.)

2007-06-01T23:59:59.000Z

198

A population-based local search for solving a bi-objective vehicle routing problem  

Science Conference Proceedings (OSTI)

In this paper we present a population-based local search for solving a bi-objective vehicle routing problem. The objectives of the problem are minimization of the tour length and balancing the routes. The algorithm repeatedly generates a pool of good ...

Joseph M. Pasia; Karl F. Doerner; Richard F. Hartl; Marc Reimann

2007-04-01T23:59:59.000Z

199

A model distribution function for relativistic bi-Maxwellian with drift  

SciTech Connect

A model distribution function for relativistic bi-Maxwellian with drift is proposed, based on the maximum entropy principle and the relativistic canonical transformation. Since the obtained expression is compatible with the existing distribution functions and has a relatively simple form as well as smoothness, it might serve as a useful tool in the research fields of space or high temperature fusion plasmas.

Naito, O. [Japan Atomic Energy Agency, 801-1 Mukouyama, Naka, Ibaraki 311-0193 (Japan)

2013-04-15T23:59:59.000Z

200

SE-MA-NO Electric Coop | Open Energy Information  

Open Energy Info (EERE)

MA-NO Electric Coop MA-NO Electric Coop Jump to: navigation, search Name SE-MA-NO Electric Coop Place Missouri Utility Id 16851 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Municipal HPS 100 W Lighting Municipal HPS 250 W Lighting Residential Residential Residential/Commercial HPS 100 W Lighting Residential/Commercial HPS 250 W Lighting Average Rates Residential: $0.0804/kWh Commercial: $0.0763/kWh Industrial: $0.0649/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a"

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201

STATE OF WASHINGTON DEPARTMENT OF COMMERCE 1011 Plum Street SE  

NLE Websites -- All DOE Office Websites (Extended Search)

STATE OF WASHINGTON STATE OF WASHINGTON DEPARTMENT OF COMMERCE 1011 Plum Street SE  PO Box 42525  Olympia, Washington 98504-2525  (360) 725-4000 www.commerce.wa.gov July 33, 2013 Roland J. Risser Building Technologies Program Manager Office of Energy Efficiency and Renewable Energy U.S. Department of Energy 1000 Independence Avenue SW, Mail Stop EE-2J Washington, DC 20585-0121 RE: State Certification of Residential and Commercial Building Energy Codes Dear Mr. Risser: In compliance with Title III of the Energy Conservation and Production Act (ECPA) of 1976, as amended, this is to certify that the State of Washington has adopted the 2012 Edition, Washington State Energy Code, which meets or exceeds the 2012 version of the International Energy Conservation Code (IECC) for low-rise residential

202

File:EIA-PSJ-SE-LIQ.pdf | Open Energy Information  

Open Energy Info (EERE)

File File Edit with form History Facebook icon Twitter icon » File:EIA-PSJ-SE-LIQ.pdf Jump to: navigation, search File File history File usage Paradox-San Juan Basin, Southeast Part By 2001 Liquids Reserve Class Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(5,100 × 6,600 pixels, file size: 13.12 MB, MIME type: application/pdf) Description Paradox-San Juan Basin, Southeast Part By 2001 Liquids Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Utah, Colorado, New Mexico, Arizona

203

Insulation and Heat Treatment of Bi-2212 Wire for Wind-and-React Coils  

Science Conference Proceedings (OSTI)

Higher Field Magnets demand higher field materials such as Bi-2212 round superconducting wire. The Bi-2212 wire manufacture process depends on the coil fabrication method and wire insulation material. Considering the wind-and-react method, the coil must unifirmly heated to the melt temperature and uniformly cooled to the solidification temperature. During heat treat cycle for tightly wound coils, the leakage melt from conductor can chemically react with insulation on the conductor and creat short turns in the coils. In this research project, conductor, insulation, and coils are made to systemically study the suitable insulation materials, coil fabrication method, and heat treatment cycles. In this phase I study, 800 meters Bi-2212 wire with 3 different insulation materials have been produced. Best insulation material has been identified after testing six small coils for insulation integrity and critical current at 4.2 K. Four larger coils (2" dia) have been also made with Bi-2212 wrapped with best insulation and with different heattreatment cycle. These coils were tested for Ic in a 6T background field and at 4.2 K. The test result shows that Ic from 4 coils are very close to short samples (1 meter) result. It demonstrates that HTS coils can be made with Bi-2212 wire with best insulation consistently. Better wire insulation, improving coil winding technique, and wire manufacture process can be used for a wide range of high field magnet application including acclerators such as Muon Collider, fusion energy research, NMR spectroscopy, MRI, and other industrial magnets.

Peter K. F. Hwang

2007-10-22T23:59:59.000Z

204

Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process  

DOE Patents (OSTI)

This invention relates to an improved process of preparing Bi-Sr-Ca-Cu-O (BSCCO) powders, and more particularly, to a process for preparing BSCCO powders that utilize freeze-drying. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution; grinding the flakes to form a powder; freeze-drying the frozen powder; heating the powder to form dry green precursor powders; denitrating the powders; and heating the powders to form phase-clean Bi-2223 powders.

Balachandran, U.; Krishnaraj, P.; Eror, N.G.; Lelovic, M.

1994-12-31T23:59:59.000Z

205

T-641: Oracle Java SE Critical Patch Update Advisory - June 2011 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1: Oracle Java SE Critical Patch Update Advisory - June 2011 1: Oracle Java SE Critical Patch Update Advisory - June 2011 T-641: Oracle Java SE Critical Patch Update Advisory - June 2011 June 8, 2011 - 12:26pm Addthis PROBLEM: Oracle Java SE Critical Patch Update Advisory - June 2011 PLATFORM: JDK and JRE 6 Update 25 and earlier, Java SE, JDK 5.0 Update 29 and earlier Java SE, SDK 1.4.2_31 and earlier ABSTRACT: This Critical Patch Update contains 17 new security fixes for Oracle Java SE - 5 apply to client and server deployments of Java SE, 11 apply to client deployments of Java SE only, and 1 applies to server deployments of Java SE only. All of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without the need for a username and password. Oracle CVSS scores assume that a user running a Java applet or Java Web

206

T-641: Oracle Java SE Critical Patch Update Advisory - June 2011 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

41: Oracle Java SE Critical Patch Update Advisory - June 2011 41: Oracle Java SE Critical Patch Update Advisory - June 2011 T-641: Oracle Java SE Critical Patch Update Advisory - June 2011 June 8, 2011 - 12:26pm Addthis PROBLEM: Oracle Java SE Critical Patch Update Advisory - June 2011 PLATFORM: JDK and JRE 6 Update 25 and earlier, Java SE, JDK 5.0 Update 29 and earlier Java SE, SDK 1.4.2_31 and earlier ABSTRACT: This Critical Patch Update contains 17 new security fixes for Oracle Java SE - 5 apply to client and server deployments of Java SE, 11 apply to client deployments of Java SE only, and 1 applies to server deployments of Java SE only. All of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without the need for a username and password. Oracle CVSS scores assume that a user running a Java applet or Java Web

207

High pressure transport characteristics of Bi[subscript 2]Te[subscript 3], Sb[subscript 2]Te[subscript 3], and BiSbTe[subscript 3  

Science Conference Proceedings (OSTI)

This paper presents ambient and high pressure measurements of transport properties of the Bi2Te3-Sb2Te3 series of materials. The electrical resistivity, thermal conductivity, and Seebeck coefficient have been measured on both end compounds and the direct solid solution of the two at pressure up to 10 GPa. An additional discussion involving the high pressure structure will be presented. From this, it was determined that these materials undergo at least two structural phase transitions between 0 and 20 GPa and a discussion is presented regarding this and the changes in the transport properties.

Jacobsen, M.K.; Sinogeikin, S.V.; Kumar, R.S.; Cornelius, A.L. (UNLV); (CIW)

2012-07-25T23:59:59.000Z

208

Interstitial BiO molecule as a center of broadband IR luminescence in bismuth-doped silica glass  

E-Print Network (OSTI)

IR luminescence and absorption in bismuth-doped silica glass-core fibers observed recently (see [arXiv:1106.2969v1 [physics.optics]) are argued to be caused by transitions in interstitial BiO molecules

Sokolov, V O; Dianov, E M

2011-01-01T23:59:59.000Z

209

Molecular beam epitaxy growth of GaAsBi/GaAs/AlGaAs separate confinement heterostructures  

Science Conference Proceedings (OSTI)

GaAsBi/GaAs/AlGaAs separate confinement heterostructures are grown using an asymmetric temperature profile due to the low optimal growth temperature of GaAsBi; the bottom AlGaAs barrier is grown at 610 Degree-Sign C, while the GaAsBi quantum well and the top AlGaAs barrier are grown at 320 Degree-Sign C. Cross-sectional transmission electron microscopy and room temperature photoluminescence measurements indicate that this approach results in samples with excellent structural and optical properties. The high quality of the low temperature AlGaAs barrier is attributed to the presence of Bi on the surface as indicated by a (1 Multiplication-Sign 3) surface reconstruction persisting throughout the low temperature growth.

Fan Dongsheng; Yu Shuiqing [Department of Electrical Engineering, University of Arkansas, Fayetteville, Arkansas 72701 (United States); Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701 (United States); Zeng Zhaoquan; Hu Xian; Dorogan, Vitaliy G.; Li Chen; Benamara, Mourad; Hawkridge, Michael E.; Mazur, Yuriy I.; Salamo, Gregory J. [Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701 (United States); Johnson, Shane R. [School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287-6206 (United States); Wang, Zhiming M. [State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054 (China)

2012-10-29T23:59:59.000Z

210

Electronic structure of multiferroic BiFeO3 by resonant soft-x-ray emission spectroscopy  

E-Print Network (OSTI)

3 thin film is low electrical resistivity, which affects thetemperature. The low electrical resistivity of BiFeO 3 thinneeds the high electrical resistivity in order to obtain

Higuchi, T.

2008-01-01T23:59:59.000Z

211

Potential commercial application of a bi-layer bone-ligament regeneration scaffold to anterior cruciate ligament replacement  

E-Print Network (OSTI)

A business model was created in order to explore the commercial application of a bi-layer bone-ligament scaffold to the treatment of torn anterior cruciate ligaments (ACL) requiring replacement. The two main keys in producing ...

Li, Jessica C. (Jessica Ching-Yi)

2006-01-01T23:59:59.000Z

212

A new hybrid multi-objective Pareto archive PSO algorithm for a bi-objective job shop scheduling problem  

Science Conference Proceedings (OSTI)

This paper presents a new mathematical model for a bi-objective job shop scheduling problem with sequence-dependent setup times and ready times that minimizes the weighted mean flow time (F@?"w) and total penalties of tardiness and earliness (E/T). Obtaining ... Keywords: Bi-objective job shop, Genetic operators, Pareto archive PSO, Ready time, Sequence-dependent setup times, VNS

R. Tavakkoli-Moghaddam; M. Azarkish; A. Sadeghnejad-Barkousaraie

2011-09-01T23:59:59.000Z

213

Variation in p-mode power over solar cycle 23 as seen from BiSON and GOLF observations  

E-Print Network (OSTI)

We analyzed BiSON and GOLF/SoHO data with a new technique, to investigate p-mode power variation over solar cycle 23. We found a decrease in the mean velocity power of about 20% for BiSON during the ascending phase, in agreement with previous findings. We also found that GOLF, during the red-wing configuration, seems to be working at a different height than the theoretically computed one.

Simoniello, R; Garca, R A

2008-01-01T23:59:59.000Z

214

Variation in p-mode power over solar cycle 23 as seen from BiSON and GOLF observations  

E-Print Network (OSTI)

We analyzed BiSON and GOLF/SoHO data with a new technique, to investigate p-mode power variation over solar cycle 23. We found a decrease in the mean velocity power of about 20% for BiSON during the ascending phase, in agreement with previous findings. We also found that GOLF, during the red-wing configuration, seems to be working at a different height than the theoretically computed one.

R. Simoniello; D. Salabert; R. A. Garcia

2008-10-10T23:59:59.000Z

215

Bismuth in gallium arsenide: Structural and electronic properties of GaAs{sub 1-x}Bi{sub x} alloys  

Science Conference Proceedings (OSTI)

The structural and electronic properties of cubic GaAs{sub 1-x}Bi{sub x} alloys with bismuth concentration 0.0, 0.25, 0.50, 0.75 and 1.0 are studied using the 'special quasi-random structures' (SQS) approach of Zunger along with the generalized gradient approximation (GGA) and the Engel-Vosko generalized gradient approximation (EV-GGA). The lattice constant, bulk modulus, derivative of bulk modulus and energy gap vary with bismuth concentration nonlinearly. The present calculations show that the band gap decreases substantially with increasing bismuth concentration and that spin-orbit coupling influences the nature of bonding at high Bi concentrations. - Graphical abstract: Bowing effect of spin-orbit split-off band values versus Bi content with and without spin-orbit coupling for GaAs{sub 1-x}Bi{sub x} (at x=0.25, 0.50 and 0.75). Calculations are done with GGA. Highlights: Black-Right-Pointing-Pointer Structural and electronic properties of GaAs{sub 1-x}Bi{sub x} alloys were studied. Black-Right-Pointing-Pointer We present results of lattice constant, energy gap, bulk modulus and derivative. Black-Right-Pointing-Pointer The band gap decreases substantially with increasing Bi concentration. Black-Right-Pointing-Pointer Calculations of the density of states and charge densities are also presented. Black-Right-Pointing-Pointer We have performed calculations without and with spin-orbit coupling.

Reshak, Ali Hussain, E-mail: maalidph@yahoo.co.uk [School of Complex Systems, FFWP-South Bohemia University, Nove Hrady 37333 (Czech Republic); School of Material Engineering, Malaysia University of Perlis, P.O Box 77, d/a Pejabat Pos Besar, 01007 Kangar, Perlis (Malaysia); Kamarudin, H. [School of Material Engineering, Malaysia University of Perlis, P.O Box 77, d/a Pejabat Pos Besar, 01007 Kangar, Perlis (Malaysia); Auluck, S. [National Physical Laboratory Dr. KS Krishnan Marg, New Delhi 110012 (India); Kityk, I.V. [Electrical Engineering Department, Technological University of Czestochowa, Al. Armii Krajowej 17/19, Czestochowa (Poland)

2012-02-15T23:59:59.000Z

216

Bi-level multilayered microelectronic device package with an integral window  

DOE Patents (OSTI)

A bi-level, multilayered package with an integral window for housing a microelectronic device. The device can be a semiconductor chip, a CCD chip, a CMOS chip, a VCSEL chip, a laser diode, a MEMS device, or a IMEMS device. The multilayered package can be formed of a low-temperature cofired ceramic (LTCC) or high-temperature cofired ceramic (HTCC) multilayer processes with the window being simultaneously joined (e.g. cofired) to the package body during LTCC or HTCC processing. The microelectronic device can be flip-chip bonded and oriented so that the light-sensitive side is optically accessible through the window. A second chip can be bonded to the backside of the first chip, with the second chip being wirebonded to the second level of the bi-level package. The result is a compact, low-profile package, having an integral window that can be hermetically-sealed.

Peterson, Kenneth A. (Albuquerque, NM); Watson, Robert D. (Tijeras, NM)

2002-01-01T23:59:59.000Z

217

A Comprehensive Approach to Bi-National Regional Energy Planning in the Pacific Northwest  

SciTech Connect

The Pacific NorthWest Economic Region, a statutory organization chartered by the Northwest states of Alaska, Washington, Idaho, Montana, and Oregon, and the western Canadian provinces of British Columbia, Alberta, and the Yukon through its Energy Working Group launched a bi-national energy planning initiative designed to create a Pacific Northwest energy planning council of regional public/private stakeholders from both Canada and the US. There is an urgent need to deal with the comprehensive energy picture now before our hoped for economic recovery results in energy price spikes which are likely to happen because the current supply will not meet predicted demand. Also recent events of August 14th have shown that our bi-national energy grid system is intricately interdependent, and additional planning for future capacity is desperately needed.

Matt Morrison

2007-12-31T23:59:59.000Z

218

Effect of (Bi, La)(Fe, Zn)O{sub 3} thickness on the microstructure and multiferroic properties of BiFeO{sub 3} thin films  

Science Conference Proceedings (OSTI)

The effect of Bi{sub 0.90}La{sub 0.10}Fe{sub 0.90}Zn{sub 0.10}O{sub 3} (BLFZO) thicknesses on the microstructure and multiferroic properties of BiFeO{sub 3} (BFO) thin films was investigated, and all bilayered thin films were grown on Pt-coated silicon substrates without any buffer layers by a radio frequency sputtering. A (110) orientation is dominant in all the bilayers, and two grain growth modes are identified in these bilayers by using an atomic force microscope, where different grain growth modes significantly affect their leakage behavior. The dielectric constant ({epsilon}{sub r}) of bilayers gradually increases, and magnetic properties were deteriorated with the addition of BLFZO with a higher {epsilon}{sub r} and a weaker magnetic behavior. An enhanced ferroelectric behavior of 2P{sub r} {approx} 116.2 {mu}C/cm{sup 2} and 2E{sub c} {approx} 524 kV/cm could be observed in the BFO/BLFZO bilayered thin film with 80 nm BLFZO layer owing to a higher orientation degree of (110) and an interface coupling together with a lower leakage current density. As a result, electrical properties of BFO could be tailored by modifying the thicknesses of BLFZO.

Wu Jiagang; Xiao Dingquan; Zhu Jianguo [Department of Materials Science, Sichuan University, Chengdu 610064 (China)

2012-11-01T23:59:59.000Z

219

Conductivity anisotropy in the doped Bi{sub 2}Te{sub 3} single crystals  

Science Conference Proceedings (OSTI)

Temperature dependences (temperature range T = 0.5-300 K) of resistivity in the plane of layers and in the direction perpendicular to the layers, and the galvanomagnetic effects in undoped and doped Bi{sub 2}Te{sub 3} single crystals are studied (magnetic field H < 80 kOe, T = 0.5-4.2 K). It is shown that upon doping of Bi{sub 2}Te{sub 3} with the Group III atoms (In and B), conductivity anisotropy increases mainly due to an increase in resistivity in the direction perpendicular to the layers. This fact makes it possible to assume that the atoms of these impurities are incorporated mainly into the van der Waal gaps between the layers upon doping. It is also revealed that, upon doping of Bi{sub 2}Te{sub 3} with In and B, the temperature dependence of conductivity becomes weaker, which indicates an increase in the role of scattering by defects in scattering mechanisms. The concentrations and mobilities of charge carriers, values of the Hall factor conditioned by the anisotropy of effective masses and orientation of ellipsoids with respect to crystallographic axes, areas of the extreme section of the Fermi surface by the plane perpendicular to the direction of the magnetic field, and the Fermi energy are evaluated.

Abdullaev, N. A., E-mail: anadir@azintex.com; Kakhramanov, S. Sh.; Kerimova, T. G.; Mustafayeva, K. M. [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan); Nemov, S. A. [St. Petersburg State Polytechnical University (Russian Federation)

2009-02-15T23:59:59.000Z

220

Synthesis, crystal structure and optical properties of BiMgVO{sub 5}  

Science Conference Proceedings (OSTI)

The new vanadate BiMgVO{sub 5} has been prepared and its structure has been determined by single crystal X-ray diffraction: space group P21/n, a=7.542(6)A, b=11.615(5)A, c=5.305(3)A, {beta}=107.38(5){sup o}, wR2=0.0447, R=0.0255. The structure consists of [Mg{sub 2}O{sub 10}] and [Bi{sub 2}O{sub 10}] dimers sharing their corners with [VO{sub 4}] tetrahedra. The ranges of bond lengths are 2.129-2.814A for Bi-O; 2.035-2.167A for Mg-O and 1.684-1.745A for V-O. V-O bond lengths determined from Raman band wavenumbers are between 1.679 and 1.747A. An emission band overlapping the entire visible region with a maximum around 650nm is observed.

Benmokhtar, S. [LCMS, UFR Sciences des Materiaux Solides, Faculte des Sciences Ben M'Sik, UH2M, Casablanca B.P. 7955 (Morocco); El Jazouli, A. [LCMS, UFR Sciences des Materiaux Solides, Faculte des Sciences Ben M'Sik, UH2M, Casablanca B.P. 7955 (Morocco)]. E-mail: a.eljazouli@univh2m.ac.ma; Chaminade, J.P. [Institut de Chimie de la Matiere Condensee de Bordeaux (ICMCB-CNRS), Pessac 33608 (France); Gravereau, P. [Institut de Chimie de la Matiere Condensee de Bordeaux (ICMCB-CNRS), Pessac 33608 (France); Guillen, F. [Institut de Chimie de la Matiere Condensee de Bordeaux (ICMCB-CNRS), Pessac 33608 (France); Waal, D. de [Department of Chemistry, University of Pretoria, Pretoria 0002 (South Africa)

2004-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Thermal management in large Bi2212 mesas used for terahertz sources.  

SciTech Connect

We present a thermal analysis of a patterned mesa on a Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} (Bi2212) single crystal that is based on tunneling characteristics of the c-axis stack of {approx}800 intrinsic Josephson junctions in the mesa. Despite the large mesa volume (e.g., 40 times 300 times 1.2 mum{sup 3}) and power dissipation that result in self-heating and backbending of the current-voltage curve (I-V), there are accessible bias conditions for which significant polarized THz-wave emission can be observed. We estimate the mesa temperature by equating the quasiparticle resistance, R{sub qp}(T), to the ratio V/I over the entire I-V including the backbending region. These temperatures are used to predict the unpolarized black-body radiation reaching our bolometer and there is substantial agreement over the entire I-V. As such, backbending results from the particular R{sub qp}(T) for Bi2212, as first discussed by Fenton, rather than a significant suppression of the energy gap. This model also correctly predicts the observed disappearance of backbending above {approx}60 K.

Kurter, C.; Gray, K. E.; Zasadzinski, J. F.; Ozyuzer, L.; Koshelev, A. E.; Li, Q.; Yamamoto, T.; Kadowaki, K.; Kwok, W.-K.; Tachiki, M.; Welp, U.; Materials Science Division; Izmir Inst. of Tech.; Illinois Inst. of Tech.; Univ. Tsukuba; Univ. Tokyo

2009-06-01T23:59:59.000Z

222

110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same  

DOE Patents (OSTI)

A superconductor consisting of a sufficiently pure phase of the oxides of Bi, Sr, Ca, and Cu to exhibit a resistive zero near 110K resulting from the process of forming a mixture of Bi.sub.2 O.sub.3, SrCO.sub.3, CaCO.sub.3 and CuO into aparticulate compact wherein the atom ratios are Bi.sub.2, Sr.sub.1.2-2.2, Ca.sub.1.8-2.4, Cu.sub.3. Thereafter, heating the particulate compact rapidly in the presence of oxygen to an elevated temperature near the melting point of the oxides to form a sintered compact, and then maintaining the sintered compact at the elevated temperature for a prolonged period of time. The sintered compact is cooled and reground. Thereafter, the reground particulate material is compacted and heated in the presence of oxygen to an elevated temperature near the melting point of the oxide and maintained at the elevated temperature for a time sufficient to provide a sufficiently pure phase to exhibit a resistive zero near 110K.

Veal, Boyd W. (Downers Grove, IL); Downey, John W. (Joliet, IL); Lam, Daniel J. (Orland Park, IL); Paulikas, Arvydas P. (Downers Grove, IL)

1992-01-01T23:59:59.000Z

223

110K Bi-Sr-Ca-Cu-O superconductor oxide and method for making same  

DOE Patents (OSTI)

A superconductor is disclosed consisting of a sufficiently pure phase of the oxides of Bi, Sr, Ca, and Cu to exhibit a resistive zero near 110K resulting from the process of forming a mixture of Bi[sub 2]O[sub 3], SrCO[sub 3], CaCO[sub 3] and CuO into a particulate compact wherein the atom ratios are Bi[sub 2], Sr[sub 1.2-2.2], Ca[sub 1.8-2.4], Cu[sub 3]. Thereafter, heating the particulate compact rapidly in the presence of oxygen to an elevated temperature near the melting point of the oxides to form a sintered compact, and then maintaining the sintered compact at the elevated temperature for a prolonged period of time. The sintered compact is cooled and reground. Thereafter, the reground particulate material is compacted and heated in the presence of oxygen to an elevated temperature near the melting point of the oxide and maintained at the elevated temperature for a time sufficient to provide a sufficiently pure phase to exhibit a resistive zero near 110K. 7 figs.

Veal, B.W.; Downey, J.W.; Lam, D.J.; Paulikas, A.P.

1992-12-22T23:59:59.000Z

224

Anisotropic magnetization and resistivity of single crystalline RNi1-xBi2 y (R = La-Nd, Sm, Gd-Dy)  

Science Conference Proceedings (OSTI)

We present a detailed study of RNi1?xBi2y (R = LaNd, Sm, GdDy) single crystals by measurements of stoichiometry and temperature dependent magnetic susceptibility, magnetization, and electrical resistivity. This series forms with partial Ni occupancy, 0.72 ? (1?x) ? 0.84, as well as a variable Bi occupancy, 1.76 ? (2y) ? 2.14. For R = CeNd, GdDy, the RNi1?xBi2y compounds show local-moment like behavior and order antiferromagnetically at low temperatures. Determination of anisotropies as well as antiferromagnetic ordering temperatures for RNi1?xBi2y (R = CeNd, Sm, GdDy) have been made. Crystalline samples from this family exhibit minority, second phase superconductivity at low temperatures, which can be associated with NiBi and Bi contamination. No evidence of bulk superconductivity has been observed.

Lin, Xiao [Iowa State University; Straszheum, Warren E. [Ames Laboratory; Budko, Sergey L. [Ames Laboratory; Canfield, Paul C. [Ames Laboratory

2012-11-29T23:59:59.000Z

225

Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Secretary Chu to Lead Delegation to SE4All, CEM Conferences in Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London April 9, 2012 - 10:13am Addthis WASHINGTON, DC - Later this month, U.S. Energy Secretary Steven Chu will join Energy Ministers from the world's leading economies in London for the UN Sustainable Energy for All (SE4All) conference and the Clean Energy Ministerial (CEM3). CEM3 and SE4All will hold a joint press conference on April 26, 2012, to announce outcomes from the ministerial and release the SE4All Action Agenda. The High Level Group of SE4All will work to accelerate progress on critical clean energy priorities. SE4All's objectives are to double the global rate of improvement in energy efficiency, double the share of renewable

226

Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SE4All, CEM Conferences in SE4All, CEM Conferences in London Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London April 9, 2012 - 10:13am Addthis WASHINGTON, DC - Later this month, U.S. Energy Secretary Steven Chu will join Energy Ministers from the world's leading economies in London for the UN Sustainable Energy for All (SE4All) conference and the Clean Energy Ministerial (CEM3). CEM3 and SE4All will hold a joint press conference on April 26, 2012, to announce outcomes from the ministerial and release the SE4All Action Agenda. The High Level Group of SE4All will work to accelerate progress on critical clean energy priorities. SE4All's objectives are to double the global rate of improvement in energy efficiency, double the share of renewable energy in the global energy mix, and ensure universal access to modern

227

T-558: Oracle Java SE and Java for Business Critical Patch Update...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8: Oracle Java SE and Java for Business Critical Patch Update Advisory - February 2011 T-558: Oracle Java SE and Java for Business Critical Patch Update Advisory - February 2011...

228

Aqueous synthesis and characterization of CdSe/ZnO core-shell nanoparticles  

Science Conference Proceedings (OSTI)

Core-shell nanomaterials based on CdSe as the core and ZnO as the shell were prepared using an aqueous route involving the use of Cd salt and NaBH4 in reaction with Se to generate CdSe in the presence of thioglycerol (TG) as a stabilizer. ...

B. P. Rakgalakane; M. J. Moloto

2011-01-01T23:59:59.000Z

229

Synthesis and characterization of blue emitting ZnSe quantum dots  

Science Conference Proceedings (OSTI)

In this work we show a new experimental methodology to obtain ZnSe nanocrystals in aqueous solution aiming their application as biophotonic probes. The nanocrystals were obtained using a simple procedure based on the arrested precipitation of ZnSe in ... Keywords: Blue emission, Colloidal synthesis, Water soluble quantum dots, ZnSe

J. J. Andrade; A. G. Brasil, Jr.; P. M. A. Farias; A. Fontes; B. S. Santos

2009-03-01T23:59:59.000Z

230

Photodeposition of Pt on Colloidal CdS and CdSe/CdS Semiconductor Nanostructures  

E-Print Network (OSTI)

on Colloidal CdS and CdSe/CdS Semiconductor Nanostructuresof Pt on colloidal CdS and CdSe/CdS core/shell nanocrystals.photoexcitation of CdS and CdSe/CdS in the presence of an

Dukovic, Gordana

2008-01-01T23:59:59.000Z

231

Thermochemical and kinetic aspects of the sulfurization of Cu-Sb and Cu-Bi thin films  

Science Conference Proceedings (OSTI)

CuSbS{sub 2} and Cu{sub 3}BiS{sub 3} are being investigated as part of a search for new absorber materials for photovoltaic devices. Thin films of these chalcogenides were produced by conversion of stacked and co-electroplated metal precursor layers in the presence of elemental sulfur vapour. Ex-situ XRD and SEM/EDS analyses of the processed samples were employed to study the reaction sequence with the aim of achieving compact layer morphologies. A new 'Time-Temperature-Reaction' (TTR) diagram and modified Pilling-Bedworth coefficients have been introduced for the description and interpretation of the reaction kinetics. For equal processing times, the minimum temperature required for CuSbS{sub 2} to appear is substantially lower than for Cu{sub 3}BiS{sub 3}, suggesting that interdiffusion across the interfaces between the binary sulfides is a key step in the formation of the ternary compounds. The effects of the heating rate and sulfur partial pressure on the phase evolution as well as the potential losses of Sb and Bi during the processes have been investigated experimentally and the results related to the equilibrium pressure diagrams obtained via thermochemical computation. - Graphical Abstract: Example of 3D plot showing the equilibrium pressure surfaces of species potentially escaping from chalcogenide films as a function of temperature and sulfur partial pressure. Bi{sub (g)}, Bi{sub 2(g)}, and BiS{sub (g)} are the gaseous species in equilibrium with solid Bi{sub 2}S{sub 3(s)} considered in this specific example. The pressure threshold plane corresponds to the pressure limit above which the elemental losses from 1 {mu}m thick films exceeds 10% of the original content per cm{sup 2} area of film and dm{sup 3} capacity of sulfurization furnace under static atmosphere conditions. The sulfurization temperature/sulfur partial pressure boundaries required to minimise the elemental losses below a given value can be easily read from the 2D projection of the intersection curves into the T-p{sub S2} plane. Highlights: Black-Right-Pointing-Triangle Sulfurization of Sb-Cu and Bi-Cu metal precursors for thin film PV applications. Black-Right-Pointing-Triangle Kinetics shows the rate determining step to be the interdiffusion of binary sulfides. Black-Right-Pointing-Triangle Phase evolution is consistent with Pilling-Bedworth coefficients of Cu, Sb and Bi. Black-Right-Pointing-Triangle Elemental losses can be minimised via the use of equilibrium pressure diagrams.

Colombara, Diego, E-mail: dc326@bath.ac.uk [Department of Chemistry, University of Bath, Bath BA2 7AY (United Kingdom); Peter, Laurence M. [Department of Chemistry, University of Bath, Bath BA2 7AY (United Kingdom); Rogers, Keith D.; Hutchings, Kyle [Centre for Materials Science and Engineering, Cranfield University, Shrivenham, SN6 8LA (United Kingdom)

2012-02-15T23:59:59.000Z

232

Polymorphic transformation in TlSe and the electrical properties of phases  

Science Conference Proceedings (OSTI)

Alloys in the TlSe-Se system on the side of the TlSe compound in the phase diagram have been investigated using differential thermal, X-ray powder diffraction, and microstructural analyses. The phase diagram of the system has been constructed, and the temperature dependences of the electrical conductivity of the phases obtained have been examined. An analysis of the thermograms of alloys in the (TlSe){sub 0.96}-Se{sub 0.04} system has revealed a structural phase transition at a temperature of 470 {+-} 1 K. Investigations into the temperature dependences of the electrical conductivity in the range 120-450 K have demonstrated that the temperature dependence of the electrical conductivity for the (TlSe){sub 0.96}-Se{sub 0.04} alloy exhibits metallic behavior.

Najafov, A. I. [Azerbaijan National Academy of Sciences, Institute of Radiation Problems (Azerbaijan); Guseinov, G. G.; Alekperov, O. Z. [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan); Sardarly, R. M., E-mail: sardarli@yahoo.com; Abdullaev, A. P.; Eyubova, N. A. [Azerbaijan National Academy of Sciences, Institute of Radiation Problems (Azerbaijan)

2008-09-15T23:59:59.000Z

233

Elastic and surface energies: Two key parameters for CdSe quantum dot formation  

SciTech Connect

The two-dimensional-three-dimensional transition of a strained CdSe layer on (001) ZnSe induced by the use of amorphous selenium is studied. To precisely control the thickness of the CdSe layer, atomic layer epitaxy growth mode is used. Atomic force microscopy and reflection high-energy electron diffraction measurements reveal the formation of CdSe islands when 3 ML (monolayers) of CdSe, corresponding to the critical thickness, are deposited. When only 2.5 ML of CdSe are deposited another relaxation mechanism is observed, leading to the appearance of strong undulations on the surface. For a 3 ML thick CdSe layer, transmission electron microscopy images indicate that the formation of the islands occurs only after the amorphous selenium desorption.

Robin, Ivan-Christophe; Andre, Regis; Bougerol, Catherine; Aichele, Thomas; Tatarenko, Serge [Laboratoire de Spectrometrie Physique/CNRS UMR5588, Universite Joseph Fourier, Grenoble, BP87, 38402 St. Martin d'Heres (France)

2006-06-05T23:59:59.000Z

234

Method of synthesizing and growing copper-indium-diselenide (CuInSe.sub.2) crystals  

DOE Patents (OSTI)

A process for preparing CuInSe.sub.2 crystals includes melting a sufficient quantity of B.sub.2 O.sub.3 along with stoichiometric quantities of Cu, In, and Se in a crucible in a high pressure atmosphere of inert gas to encapsulate the CuInSe.sub.2 melt and confine the Se to the crucible. Additional Se in the range of 1.8 to 2.2 percent over the stoichiometric quantity is preferred to make up for small amounts of Se lost in the process. The crystal is grown by inserting a seed crystal through the B.sub.2 O.sub.3 encapsulate into contact with the CuInSe.sub.2 melt and withdrawing the seed upwardly to grow the crystal thereon from the melt.

Ciszek, Theodore F. (Evergreen, CO)

1987-01-01T23:59:59.000Z

235

Linking Family Background and Home Language with English Reading Comprehension amog Bi/Multilinguals  

E-Print Network (OSTI)

The purpose of this study is to examine the links between family background and home language factors on English reading achievement among bi/multilingual students. To explore the potential predictors of English reading achievement among bi/multilinguals, the study included literacy related resource, family socio-economic status (SES), and immigration status as constructs for family background; while for home language factors, the study looked at the orthography of home language, language preference, and multilingualism. Additionally, the study assessed the roles of school level factors (i.e., low SES students and English language learners in school) on school reading performance. The International Association for Evaluation of Educational Achievements Progress in International Reading Literacy Study (IEA PIRLS, 2006) data of Singaporean fourth grade students were used. The data were potentially nested, therefore, the models formulated in this study had multilevel structures, student- and school-levels. The results indicated that number of childrens books at home was the strongest predictor among other family background variables including parental education. However, having childrens books in English had a very small influence on English reading scores of the bi/multilingual students. More interestingly, the study found that parental immigration status did not influence students English reading scores. Looking at home language factors, the study found that the orthography of home language linked to English reading. Importantly, the study found that Malay language, which shares the same orthography with English (i.e., alphabetic), showed the strongest link to the students English reading achievement. Other variables of home language did not significantly predict English reading after controlling for parental education.

Yulia, Astri

2013-05-01T23:59:59.000Z

236

Group-invariant soliton equations and bi-Hamiltonian geometric curve flows in Riemannian symmetric spaces  

E-Print Network (OSTI)

Universal bi-Hamiltonian hierarchies of group-invariant (multicomponent) soliton equations are derived from non-stretching geometric curve flows $\\map(t,x)$ in Riemannian symmetric spaces $M=G/H$, including compact semisimple Lie groups $M=K$ for $G=K\\times K$, $H={\\rm diag} G$. The derivation of these soliton hierarchies utilizes a moving parallel frame and connection 1-form along the curve flows, related to the Klein geometry of the Lie group $G\\supset H$ where $H$ is the local frame structure group. The soliton equations arise in explicit form from the induced flow on the frame components of the principal normal vector $N=\\covder{x}\\mapder{x}$ along each curve, and display invariance under the equivalence subgroup in $H$ that preserves the unit tangent vector $T=\\mapder{x}$ in the framing at any point $x$ on a curve. Their bi-Hamiltonian integrability structure is shown to be geometrically encoded in the Cartan structure equations for torsion and curvature of the parallel frame and its connection 1-form in the tangent space $T_\\map M$ of the curve flow. The hierarchies include group-invariant versions of sine-Gordon (SG) and modified Korteweg-de Vries (mKdV) soliton equations that are found to be universally given by curve flows describing non-stretching wave maps and mKdV analogs of non-stretching Schrodinger maps on $G/H$. These results provide a geometric interpretation and explicit bi-Hamiltonian formulation for many known multicomponent soliton equations. Moreover, all examples of group-invariant (multicomponent) soliton equations given by the present geometric framework can be constructed in an explicit fashion based on Cartan's classification of symmetric spaces.

Stephen C. Anco

2007-03-21T23:59:59.000Z

237

Effects of lithium additions on processing of Bi-Sr-Ca-Cu-O superconducting tapes  

Science Conference Proceedings (OSTI)

Lithium additions to the high-temperature superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} (2212) increased superconducting transition temperatures and improved resistance to effects of magnetic fields. In addition, these additions lowered the melting point of 2212 and increased reaction kinetics. Ag-clad tapes fabricated from 2212 with and without Li exhibited profound differences. For heating to temperatures less than or equal to 840{degrees}C, grain growth and sintering were much more substantial in the tapes containing Li.

Goretta, K.C.; Li, Y.F.; Poeppel, R.B. [Argonne National Lab., IL (United States); Wu, S.; Guo, J. [Illinois Univ., Urbana, IL (United States). Dept. of Nuclear Engineering; Schwartz, J. [Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Laboratory

1994-01-01T23:59:59.000Z

238

Control of processing factors for high J{sub c} Bi-2223/Ag tapes  

Science Conference Proceedings (OSTI)

Ten factors relating to Bi-2223/Ag tape production and thermomechanical processing have been examined in a statistically designed study to determine optimal parameter values for high critical current density J{sub c} in rolled tapes. The study indicates that low fill factor, narrow tapes processed for long times yield the best J{sub c} values, and that strain rate, as expected, is not a significant factor. The major microstructural conclusion is that macrocracking, even at the early stages of tape processing, should be avoided, as these cracks cannot easily be healed.

Willis, J.O.; Ray, R.D.; Bingert, J.F.; Phillips, D.S.; Beckman, R.J.

1995-07-01T23:59:59.000Z

239

Anisotropy of the critical current density in Bi-2223/Ag tapes  

SciTech Connect

The effect of thermomechanical processing on texture in Bi-2223 Ag-sheathed tapes as determined from the anisotropy of the critical current density J{sub c} in an applied magnetic field will be discussed. Model calculations for a distribution of grain orientations in the tape produce good fits to the data and allow characterization of the degree of long-range texture. There is a qualitative correlation of J{sub c} with global texture, but other factors, such as intergrain connectivity, are also important.

Willis, J.O.; Coulter, J.Y.; Maley, M.P.; Daemen, L.L. [Los Alamos National Lab., NM (United States); Rupich, M.W.; Riley, G.N. Jr. [American Superconductor Corp., Westborough, MA (United States)

1994-05-01T23:59:59.000Z

240

Origin of ferromagnetism enhancement in bi-layer chromium-doped indium zinc oxides  

SciTech Connect

This work demonstrates that by controlling the rapid thermal annealing temperature, amorphous chromium-doped indium zinc oxide films develop an amorphous-crystalline bi-layer structure and show magnetization up to {approx}30 emu/cm{sup 3}. The crystalline layer arises from significant out-diffusion of Zn from surfaces, leading to a large difference in the Zn:In ratio in amorphous and crystalline layers. Doped Cr ions in amorphous and crystalline layers form different valence configurations, creating a charge reservoir which transfers electrons through amorphous-crystalline interfaces and in turn enhances ferromagnetism.

Hsu, C. Y. [Physics Department, National Sun Yat-Sen University, Kaohsiung 804, Taiwan (China)

2012-08-06T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Test results for a Bi-2223 HTS racetrack coil for generator applications  

SciTech Connect

Testing, results and analysis of a Bi-2223 model superconducting generator coil produced under the DOE Superconductivity Partnership Initiative are presented. The test arrangement enables coil energization with dc and transient currents over a range of operating temperatures to explore coil performance under conditions analogous to those that would be experienced by a superconducting generator field coil. Analytical calculations of coil ac and ohmic losses and temperature rise compare well with experimental measurements. Good performance is predicted for a typical 3-phase fault condition. Coil steady state and transient performance can be predicted with confidence for full scale superconductor application.

Salasoo, L.; Herd, K.G.; Laskaris, E.T.; Hart, H.R. Jr.; Chari, M.V.K. [GE Corporate Research and Development Center, Schenectady, NY (United States)

1996-12-31T23:59:59.000Z

242

Synthesis and characterization of Bi-doped Mg{sub 2}Si thermoelectric materials  

Science Conference Proceedings (OSTI)

The Mg{sub 2}Si-based alloys are promising candidates for thermoelectric energy conversion for the middle high range of temperature. They are very attractive as they could replace lead-based compounds due to their low cost and non toxicity. They could also result in thermoelectric generator weight reduction (a key feature for the automotive application field). The high value of thermal conductivity of the silicide-based materials could be reduced by increasing the phonon scattering in the presence of nanosized crystalline grains without heavily interfering with the electrical conductivity of the thermoelectric material. Nanostructured materials were obtained under inert atmosphere through ball milling, thermal treatment and spark plasma sintering processes. In particular, the role of several bismuth doping amounts in Mg{sub 2}Si were investigated (Mg{sub 2}Si:Bi=1:x for x=0.01, 0.02 and 0.04 M ratio). The morphology, the composition and the structure of the samples were characterized by FE-SEM, EDS and XRD analyses after each process step. Moreover, the Seebeck coefficient analyses at high temperature and the electrical and thermal conductivity of the samples are presented in this work. The nanostructuring processes were affect by the MgO amount increase which influenced the thermoelectric properties of the samples mainly by reducing the electrical conductivity. With the aim of further increasing the scattering phenomena by interface or boundary effect, carbon nanostructures named Single Wall Carbon Nanohorns were added to the Mg{sub 2}Si in order to produce a nanocomposite material. The influence of the nanostructured filler on the thermoelectric material properties is also discussed. - Graphical abstract: Figure of merit (ZT) of Bi-doped samples and undoped Mg{sub 2}Si. A maximum ZT value of 0.39 at 600 Degree-Sign C was obtained for the nanocomposite material obtained adding Single Wall Carbon Nanohorns to the Bi 0.02 at% doped silicide. Highlights: Black-Right-Pointing-Pointer Role of Bi doping amounts in Mg{sub 2}Si and thermoelectric characterization up to 600 Degree-Sign C Black-Right-Pointing-Pointer Nanocomposite materials synthesized by ball milling and Spark Plasma Sintering Black-Right-Pointing-Pointer Effect on scattering phenomena of Single Wall Carbon Nanohorns added to Mg{sub 2}Si Black-Right-Pointing-Pointer Importance of oxidation phenomena in nanostructured materials.

Fiameni, S., E-mail: s.fiameni@ieni.cnr.it [CNR - IENI, Corso Stati Uniti 4, 35127 Padova (Italy); Battiston, S.; Boldrini, S.; Famengo, A.; Agresti, F.; Barison, S.; Fabrizio, M. [CNR - IENI, Corso Stati Uniti 4, 35127 Padova (Italy)] [CNR - IENI, Corso Stati Uniti 4, 35127 Padova (Italy)

2012-09-15T23:59:59.000Z

243

Flexible Micro Thermoelectric Generator based on Electroplated Bi2Te3  

E-Print Network (OSTI)

We present and discuss the fabrication process and the performance of a flexible micro thermoelectric generator with electroplated Bi2Te3 thermocouples in a SU-8 mold. Demonstrator devices generate 278uWcm-2 at dTmeas=40K across the experimental set up. Based on model calculations, a temperature difference of dTG=21.4K across the generator is assumed. Due to the flexible design and the chosen generator materials, the performance stays high even for curved contact surfaces. The measurement results correlate well with the model based design optimization predictions.

Schwyter, E; Durrer, L; Hierold, Ch

2008-01-01T23:59:59.000Z

244

Grain refinement and texture development of cast bi90sb10 alloy via severe plastic deformation  

E-Print Network (OSTI)

The purpose of this work was to study learn about grain refinement mechanisms and texture development in cast n-type Bi90Sb10 alloy caused by severe plastic deformation. The practical objective is to produce a fine grained and textured microstructure in Bi90Sb10 alloy with enhanced thermoelectric performance and mechanical strength. In the study, twelve millimeter diameter cast bars of Bi90Sb10 alloy were encapsulated in square cross section aluminum 6061 alloy containers. The composite bars were equal channel angular (ECAE) extruded through a 90 degree angle die at high homologous temperature. Various extrusion conditions were studied including punch speed (0.1, 0.3 and 0.6 in/min), extrusion temperature (220, 235 and 250oC), number of extrusion passes (1, 2 and 4), route (A, BC and C), and exit channel area reduction ratio (half and quarter area of inlet channel). The affect of an intermediate long term heat treatment (for 100 hours at 250oC under 10-3 torr vacuum) was explored. Processed materials were characterized by optical microscopy, x-ray diffraction, energy dispersive spectroscopy, wavelength dispersive spectroscopy and scanning electron microscopy. Texture was analyzed using the {006} reflection plane to identify the orientation of the basal poles in processed materials. The cast grains were irregularly shaped, had a grain size of hundreds-of-microns to millimeters, and showed inhomogeneous chemical composition. Severe plastic deformation refines the cast grains through dynamic recrystallization and causes the development of a bimodal microstructure consisting of fine grains (5-30 micron) and coarse grains (50-300 micron). ECAE processing of homogenizied Bi-Sb alloy causes grain refinement and produces a more uniform microstructure. Texture results show that ECAE route C processing gives a similar or slightly stronger texture than ECAE route A processing. In both cases, the basal-plane poles become aligned with the shear direction. Reduction area exit channel extrusion is more effective for both grain refinement and texture enhancement than simple ECAE processing.

Im, Jae-taek

2007-05-01T23:59:59.000Z

245

A bi-prism interferometer for hard x-ray photons  

Science Conference Proceedings (OSTI)

Micro-fabricated bi-prisms have been used to create an interference pattern from an incident hard X-ray beam, and the intensity of the pattern probed with fluorescence from a 30 nm-thick metal film. Maximum fringe visibility exceeded 0.9 owing to the nano-sized probe and the choice of single-crystal prism material. A full near-field analysis is necessary to describe the fringe field intensities, and the transverse coherence lengths were extracted at APS beamline 8-ID-I. It is also shown that the maximum number of fringes is dependent only on the complex refractive index of the prism material.

Isakovic, A.F.; Siddons, D.; Stein, A.; Warren, J.B.; Sandy, A.R.; Narayanan, M.S.; Ablett, J.M.; Metzler, M. and Evans-Lutterodt, K.

2010-04-06T23:59:59.000Z

246

Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process  

DOE Patents (OSTI)

A process for the preparation of amorphous precursor powders for Pb-doped Bi{sub 2}Sr{sub 2} Ca{sub 2}Cu{sub 3}O{sub x} (2223) includes a freeze-drying process incorporating a splat-freezing step. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution without any phase separation; grinding the frozen flakes to form a powder; freeze-drying the frozen powder; heating the dried powder to form a dry green precursor powders; denitrating the green-powders; heating the denitrated powders to form phase-clean Bi-2223 powders. The grain boundaries of the 2223 grains appear to be clean, leading to good intergrain contact between 2223 grains. 11 figs.

Balachandran, U.

1996-06-04T23:59:59.000Z

247

Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process  

DOE Patents (OSTI)

A process for the preparation of amorphous precursor powders for Pb-doped Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x (2223) includes a freeze-drying process incorporating a splat-freezing step. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution without any phase separation; grinding the frozen flakes to form a powder; freeze-drying the frozen powder; heating the dried powder to form a dry green precursor powders; denitrating the green-powders; heating the denitrated powders to form phase-clean Bi-2223 powders. The grain boundaries of the 2223 grains appear to be clean, leading to good intergrain contact between 2223 grains.

Balachandran, Uthamalingam (Hinsdale, IL)

1996-01-01T23:59:59.000Z

248

HKC-US: Proposed Penalty (2013-SE-33002) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Proposed Penalty (2013-SE-33002) Proposed Penalty (2013-SE-33002) HKC-US: Proposed Penalty (2013-SE-33002) July 11, 2013 DOE alleged in a Notice of Proposed Civil Penalty that HKC-US, LLC failed to certify a ceiling fan light kit as compliant with the applicable energy conservation standards. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. HKC-US: Proposed Penalty (2013-SE-33002) More Documents & Publications HKC-US: Order (2013-SE-33002) Royal Pacific: Proposed Penalty (2013-SE-33004) Excellence Opto: Proposed Penalty

249

U-105:Oracle Java SE Critical Patch Update Advisory | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

05:Oracle Java SE Critical Patch Update Advisory 05:Oracle Java SE Critical Patch Update Advisory U-105:Oracle Java SE Critical Patch Update Advisory February 16, 2012 - 11:45am Addthis PROBLEM: Oracle Java SE Critical Patch Update Advisory PLATFORM: 1.4.2_35 and prior, 5.0 Update 33 and prior; 6 Update 30 and prior; 7 Update 2 and prior ABSTRACT: Multiple vulnerabilities were reported in Oracle Java SE. A remote user can execute arbitrary code on the target system. A remote user can cause denial of service conditions. reference LINKS: Oracle Java SE Critical Patch Critical Patch Security Alerts SecurityTracker Alert ID: 1026688 Secunia Advisory: SA48009 Red Hat advisory IMPACT ASSESSMENT: High Discussion: A remote user can send specially crafted data to execute arbitrary code on the target system or cause complete denial of service conditions. The Java

250

ADVANCES IN SE-79 ANALYSES ON SAVANNAH RIVER SITE RADIOACTIVE WASTE MATRICES  

SciTech Connect

Waste cleanup efforts underway at the United States Department of Energy's (DOE) Savannah River Site (SRS) in South Carolina, as well as other DOE nuclear sites, have created a need to characterize {sup 79}Se in radioactive waste inventories. Successful analysis of {sup 79}Se in high activity waste matrices is challenging for a variety of reasons. As a result of these unique challenges, the successful quantification of {sup 79}Se in the types of matrices present at SRS requires an extremely efficient and selective separation of {sup 79}Se from high levels of interfering radionuclides. A robust {sup 79}Se radiochemical separation method has been developed at the Savannah River National Laboratory (SRNL) which is routinely capable of successfully purifying {sup 79}Se from a wide range of interfering radioactive species. In addition to a dramatic improvements in the Kd, ease, and reproducibility of the analysis, the laboratory time has been reduced from several days to only 6 hours.

Diprete, D; C Diprete, C; Ned Bibler, N; Cj Bannochie, C; Michael Hay, M

2009-03-16T23:59:59.000Z

251

U-105:Oracle Java SE Critical Patch Update Advisory | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5:Oracle Java SE Critical Patch Update Advisory 5:Oracle Java SE Critical Patch Update Advisory U-105:Oracle Java SE Critical Patch Update Advisory February 16, 2012 - 11:45am Addthis PROBLEM: Oracle Java SE Critical Patch Update Advisory PLATFORM: 1.4.2_35 and prior, 5.0 Update 33 and prior; 6 Update 30 and prior; 7 Update 2 and prior ABSTRACT: Multiple vulnerabilities were reported in Oracle Java SE. A remote user can execute arbitrary code on the target system. A remote user can cause denial of service conditions. reference LINKS: Oracle Java SE Critical Patch Critical Patch Security Alerts SecurityTracker Alert ID: 1026688 Secunia Advisory: SA48009 Red Hat advisory IMPACT ASSESSMENT: High Discussion: A remote user can send specially crafted data to execute arbitrary code on the target system or cause complete denial of service conditions. The Java

252

Structural, thermal, optical, and photoacoustic study of nanocrystalline Bi{sub 2}Te{sub 3} produced by mechanical alloying  

SciTech Connect

Nanocrystalline Bi{sub 2}Te{sub 3} was produced by mechanical alloying and its properties were investigated by differential scanning calorimetry (DSC) x-ray diffraction (XRD), Raman spectroscopy (RS), and photoacoustic spectroscopy (PAS). Combining the XRD and RS results, the volume fraction of the interfacial component in as-milled and annealed samples was estimated. The PAS results suggest that the contribution of the interfacial component to the thermal diffusivity of nanostructured Bi{sub 2}Te{sub 3} is very significant.

Souza, S. M.; Triches, D. M.; Poffo, C. M. [Departamento de Engenharia Mecanica, Universidade Federal de Santa Catarina, Campus Universitario Trindade, C.P. 476, Florianopolis, Santa Catarina 88040-900 (Brazil); Lima, J. C. de; Grandi, T. A. [Departamento de Fisica, Universidade Federal de Santa Catarina, Campus Trindade, C.P. 476, Florianopolis, Santa Catarina 88040-900 (Brazil); Biasi, R. S. de [Secao de Engenharia Mecanica e de Materiais, Instituto Militar de Engenharia, 22290-270 Rio de Janeiro-RJ (Brazil)

2011-01-01T23:59:59.000Z

253

ARTIGO INTERNET Festival Internacional de Tunas "Cidade de Lisboa" realiza-se no sbado  

E-Print Network (OSTI)

NewsSearch ARTIGO INTERNET Festival Internacional de Tunas "Cidade de Lisboa" realiza-se no sábado Internacional de Tunas "Cidade de Lisboa" realiza-se no sábado As comemorações do 17.º aniversário da Tuna Internacional de Tunas "Cidade de Lisboa", que este ano se realiza no sábado, no Coliseu dos Recreios. Apesar de

Instituto de Sistemas e Robotica

254

Photovoltaic Devices Employing Ternary PbSxSe1-x Nanocrystals  

Science Conference Proceedings (OSTI)

We report solar cells based on highly confined nanocrystals of the ternary compound PbSxSe1-x. Crystalline, monodisperse alloyed nanocrystals are obtained using a one-pot, hot injection reaction. Rutherford back scattering and energy filtered transmission electron microscopy suggest that the S and Se anions are uniformly distributed in the alloy nanoparticles. Photovoltaic devices made using ternary nanoparticles are more efficient than either pure PbS or pure PbSe based nanocrystal devices.

Ma, Wanli; Luther, Joseph; Zheng, Haimei; Wu, Yue; Alivisatos, A. Paul

2009-02-05T23:59:59.000Z

255

CdSe/ZnS Nanoparticle Composites with Amine-Functionalized Polyfluoren...  

NLE Websites -- All DOE Office Websites (Extended Search)

CdSeZnS Nanoparticle Composites with Amine-Functionalized Polyfluorene Derivatives for Polymeric Light-Emitting Diodes: Synthesis, Photophysical Properties, and the...

256

Direct Patterning of CdSe Quantum Dots into Sub-100 nm Structures  

SciTech Connect

Ordered, two-dimensional cadmium selenide (CdSe) arrays have been fabricated on indium-doped tin oxide (ITO) electrodes using the pattern replication in nonwetting templates (PRINT) process. CdSe quantum dots (QDs) with an average diameter of 2.7 nm and a pyridine surface ligand were used for patterning. The PRINT technique utilizes a perfluoropolyether (PFPE) elastomeric mold that is tolerant of most organic solvents, thus allowing solutions of CdSe QDs in 4-picoline to be used for patterning without significant deformation of the mold. Nanometer-scale diffraction gratings have been successfully replicated with CdSe QDs.

Hampton, Meredith J.; Templeton, Joseph L.; DeSimone, Joseph M.

2010-01-01T23:59:59.000Z

257

Fabrication and Characterization of Polycrystalline CuInSe 2 Thin ...  

Science Conference Proceedings (OSTI)

Symposium, Thin Film Structures for Energy Efficient Systems. Presentation Title, Fabrication and Characterization of Polycrystalline CuInSe2 Thin Film by...

258

Texas Bi-Fuel Liquefied Petroleum Gas Pickup Study: Final Report  

DOE Green Energy (OSTI)

Alternative fuels may be an effective means for decreasing America's dependence on imported oil; creating new jobs; and reducing emissions of greenhouse gases, exhaust toxics, and ozone-forming hydrocarbons. However, data regarding in-use fuel economy and maintenance characteristics of alternative fuel vehicles (AFVs) have been limited in availability. This study was undertaken to compare the operating and maintenance characteristics of bi-fuel vehicles (which use liquefied petroleum gas, or propane, as the primary fuel) to those of nominally identical gasoline vehicles. In Texas, liquefied petroleum gas is one of the most widely used alternative fuels. The largest fleet in Texas, operated by the Texas Department of Transportation (TxDOT), has hundred of bi-fuel (LPG and gasoline) vehicles operating in normal daily service. The project was conducted over a 2-year period, including 18 months (April 1997-September 1998) of data collection on operations, maintenance, and fuel consumption of the vehicles under study. This report summarizes the project and its results.

Huang, Y.; Matthews, R. D.; Popova, E. T.

1999-05-24T23:59:59.000Z

259

Effect of nonstoichiometry on the electrophysical properties of the layered compounds Ge{sub 3}Bi{sub 2}Te{sub 6} and GeBi{sub 2}Te{sub 4}  

Science Conference Proceedings (OSTI)

The objective of this work was to investigate the effect of deviation from stoichiometry on the electrophysical properties (electrical and thermal conductivity, thermoelectric power, and carrier concentration) of the ternary layered semiconducting compounds Ge{sub 3{plus_minus}{delta}1}Bi{sub 2+{delta}2}Te{sub 6+{delta}3} and Ge{sub 1{plus_minus}{delta}3}, which are promising for use in thermoelectric converters.The electrophysical properties were measured at 300 K. The Ge{sub 1-{delta}1}Bi{sub 2+{delta}3} alloys were studied by powder X-ray diffraction analysis on a DRON UM-1 diffractometer (CoK{sub {alpha}} radiation). It was found that Ge{sub 3{plus_minus}{delta}1} Bi{sub 2+{delta}2}Te{sub 6{plus_minus}{delta}3} is a nonstoichiometric phase with p-type conductivity throughout the {delta}{sub 1}, {delta}{sub 2}, and {delta}{sub 3} ranges examined. Our results suggest that cation vacancies are likely to be the dominant nonstoichiometric defects responsible for the high concentration of holes. The conductivity of Ge{sub 1{plus_minus}{delta}1}Bi{sub 2}Te{sub 4} changes from the p-type in the Ge-deficient alloys to the n-type in the Gerich alloys.

Shelimova, L.E.; Karpinskii, O.G.; Avilov, E.S.; Kretova, M.A.; Lubman, C.U. [Baikov Institute of Metallurgy, Moscow (Russian Federation)

1994-12-01T23:59:59.000Z

260

Fluorescent CdSe/ZnS nanocrystal-peptide conjugates for long-term, nontoxic imaging and  

E-Print Network (OSTI)

Fluorescent CdSe/ZnS Nanocrystal-Peptide Conjugates forfluorescent labels, silanized CdSe/ZnS nanocrystal-peptidenuclei of living cells. CdSe/ZnS nanocrystals, or so called

Chen, Fanqing; Gerion, Daniele

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Strain-Dependent Photoluminescence Behavior of CdSe/CdS Nanocrystals with Spherical, Linear, and Branched Topologies  

E-Print Network (OSTI)

emission peak maxima for CdSe/CdS rods of different lengthsfluorescence spectra of bare zb-CdSe dots in a diamond anvilPhotoluminescence Behavior of CdSe/CdS Nanocrystals with

Choi, Charina L.

2010-01-01T23:59:59.000Z

262

Photovoltaic effect in InSe Application to Solar Energy Conversion  

E-Print Network (OSTI)

253 Photovoltaic effect in InSe Application to Solar Energy Conversion A. Segura, J. P. Guesdon, J are reported. Photovoltaic spectra are fitted with measured values oftransport and optical parameters. InSe is shown to be a new material with attractive characteristics for solar energy conversion. Performance

Paris-Sud XI, Université de

263

Photovoltaic cells fabricated by electrophoretic deposition of CdSe nanocrystals  

E-Print Network (OSTI)

Photovoltaic cells fabricated by electrophoretic deposition of CdSe nanocrystals Nathanael J. Smith Electrophoretic deposition was used to deposit CdSe nanocrystals on TiO2 for use in photovoltaic cells formed. A solar cell constructed using electrophoretic deposition exhibited a photovoltaic response from

Smith, Nathanael J.

264

Development of a Low Cost Insulated Foil Substrate for Cu(InGaSe)2 Photovoltaics  

DOE Green Energy (OSTI)

The project validated the use of stainless steel flexible substrate coated with silicone-based resin dielectric, developed by Dow Corning Corporation, for Cu(InGa)Se2 based photovoltaics. The projects driving force was the high performance of Cu(InGa)Se2 based photovoltaics coupled with potential cost reduction that could be achieved with dielectric coated SS web substrate.

ERTEN ESER

2012-01-22T23:59:59.000Z

265

Influence of Surfactants and Charges on CdSe Quantum Dots  

Science Conference Proceedings (OSTI)

The chemistry between CdSe quantum dots and common surface capping ligands is invested using density functional theory. We will discuss the electronic structures and optical properties of CdSe QDs controlled by the size of particle, self-organization, capping ligands, and positive charges. Charges on quantum dots have profound effects on their structures, binding energies, and optical properties.

Yang, Ping; Tretiak, Sergei; Ivanov, Sergei

2011-07-11T23:59:59.000Z

266

Charge transport in mixed CdSe and CdTe colloidal nanocrystal films  

E-Print Network (OSTI)

We report the influence of trap states on charge transport through films of mixed CdTe and CdSe nanocrystals (NCs) between lateral electrodes, through layered films of CdTe and CdSe NCs in a layered geometry, and through ...

Bawendi, Moungi G.

267

Nanoimprinted photonic crystals for the modification of the (CdSe)ZnS nanocrystals light emission  

Science Conference Proceedings (OSTI)

We report experimental results of photoluminescence (PL) enhancement in 2D photonic crystals nanoimprinted in functionalized poly-methyl methacrylate (PMMA) based polymer in which (CdSe)ZnS core-shell luminescent nanocrystals (NCs) have been incorporated. ... Keywords: (CdSe)ZnS nanocrystals, Light extraction, Nanoimprint lithography, Photoluminescence, Photonic crystal

V. Reboud; N. Kehagias; M. Zelsmann; M. Striccoli; M. Tamborra; M. L. Curri; A. Agostiano; D. Mecerreyes; J. A. Alduncn; C. M. Sotomayor Torres

2007-05-01T23:59:59.000Z

268

Cu-Ga-Se Thin Films Prepared by a Combination of Electrodeposition and Evaporation Techniques  

Science Conference Proceedings (OSTI)

Cu-Ga-Se thin films were prepared using a combination of electrodeposition and evaporation techniques. A Cu-Se/Mo/glass precursor thin film was first prepared by galvanostatic electrodeposition. On top of this film three different thicknesses of Ga were deposited by evaporation. The Cu-Ga-Se thin films were formed by annealing the Ga/Cu-Se/Mo/glass thin film configuration in a tubular chamber with Se powder, at different temperatures. Thin films were characterized by X-ray diffraction (XRD), photocurrent spectroscopy (PS), inductively coupled plasma (ICP) analysis, and scanning electron microscopy (SEM). The detailed analysis from X-ray reveals that after annealing at 550 C the CuGaSe{sub 2} phase is formed when the thickness of Ga is 0.25 {mu}m, however at 0.5 {mu}m and 1.0 {mu}m Ga the formation of CuGa{sub 3}Se{sub 5} and CuGa{sub 5}Se{sub 8} phases is observed respectively. Band gap values were obtained using photocurrent spectroscopy.

Fernandez, A. M.; Turner, J. A.

2012-04-01T23:59:59.000Z

269

AeroSys: Order (2010-CE-01/0201 and 2010-SE-0302) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

AeroSys: Order (2010-CE-01/0201 and 2010-SE-0302) AeroSys: Order (2010-CE-01/0201 and 2010-SE-0302) AeroSys: Order (2010-CE-01/0201 and 2010-SE-0302) July 1, 2010 DOE ordered AeroSys, Inc. to pay a $25,000 civil penalty after finding AeroSys had manufactured and distributed in commerce in the U.S. various models of air conditioners and air conditioning heat pumps that did not comport with the applicable energy conservation standards. In addition, AeroSys had distributed air conditioners and air conditioning heat pumps without submitting the required certification reports. The Order adopted a Compromise Agreement, which reflected settlement terms between DOE and AeroSys. AeroSys: Order (2010-CE-01/0201 and 2010-SE-0302) More Documents & Publications AeroSys: Noncompliance Determination (2010-CE-01/0201 and 2010-SE-0302)

270

Air-Con International: Order (2010-SE-0301) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Air-Con International: Order (2010-SE-0301) Air-Con International: Order (2010-SE-0301) Air-Con International: Order (2010-SE-0301) November 17, 2010 DOE ordered Air-Con International, Inc. to pay a civil penalty of $10,000 after finding Air-Con had distributed in commerce in the U.S. central air conditioning units that were not in conformity with the applicable energy conservation standards. DOE also found that, while some units were exported, none of the units were properly marked as imports intended for exportation. The Order adopted a Compromise Agreement, which reflected settlement terms between DOE and Air-Con. Air-Con International: Order (2010-SE-0301) More Documents & Publications Air-Con International: Order (2010-SE-0301) Air-Con International: Noncompliance Determination and Proposed Penalty

271

SE HAN FINALIZADO LOS PREPARATIVOS PARA LA CONFERENCIA NACIONAL DE JUSTICIA  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SE HAN FINALIZADO LOS PREPARATIVOS PARA LA CONFERENCIA NACIONAL DE SE HAN FINALIZADO LOS PREPARATIVOS PARA LA CONFERENCIA NACIONAL DE JUSTICIA MEDIOAMBIENTAL Y PROGRAMA DE FORMACIÓN 2013 SE HAN FINALIZADO LOS PREPARATIVOS PARA LA CONFERENCIA NACIONAL DE JUSTICIA MEDIOAMBIENTAL Y PROGRAMA DE FORMACIÓN 2013 La National Environmental Justice Conference, Inc. (Conferencia de Justicia Medioambiental) se prepara para otro exitoso acontecimiento, ya que se aproxima la Conferencia Nacional de Justicia Medioambiental y Programa de Formación del 2013. 2013_NEJC_Release_Spanish.pdf More Documents & Publications PREPARATIVOS EN MARCHA PARA LA CONFERENCIA SOBRE JUSTICIA AMBIENTAL NACIONAL Y EL PROGRAMA DE CAPACITACIÓN 2014 2013 National Environmental Justice Conference and Training Program EIS-0281: Draft Environmental Impact Statement Summary (Spanish)

272

Ingersoll-Rand: Proposed Penalty (2012-SE-1608) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ingersoll-Rand: Proposed Penalty (2012-SE-1608) Ingersoll-Rand: Proposed Penalty (2012-SE-1608) Ingersoll-Rand: Proposed Penalty (2012-SE-1608) February 27, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Ingersoll-Rand manufactured and distributed a noncompliant basic model 2TTA0060A4000C central air conditioner in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Ingersoll-Rand: Proposed Penalty (2012-SE-1608) More Documents & Publications Ingersoll-Rand: Order (2012-SE-1608) WA_01_034_INGERSOLL-RAND_ENERGY_SYSTEMS_Waiver_of_Domestic_a.pdf

273

Surface Plasmon Excitation via Au Nanoparticles in CdSe Semiconductor  

SciTech Connect

We present experimental evidence for the large Raman and photoluminescence enhancement in CdSe semiconductor films grown on Si and glass substrates due to excitation of surface plasmon resonances in proximate gold metal nanoparticles deposited on the surface of CdSe film. Heterojunction diodes containing n-CdSe on p-Si semiconductor were fabricated and the surface of the diodes was in situ coated with Au nanoparticles using the ultra-high vacuum pulsed-laser deposition technique. A significant enhancement of the photocurrent was obtained in CdSe/p-Si containing Au nanoparticles on the surface compared to CdSe/p-Si due to the enhanced photo-absorption within the semiconductor by the phenomenon of surface plasmon resonance. These observations suggest a variety of approaches for improving the performance of devices such as photodetectors, photovoltaic, and related devices, including biosensors.

Pradhan, A. K. [Department of Engineering Norfolk State University, 700 Park Avenue, Norfolk, VA 23504 (United States); Department of Physics, Fisk University, 1000, 17 Avenue North, Nashville, TN 37208 (United States); Konda, R. B.; Mundle, R.; Mustafa, H.; Bamiduro, O. [Department of Engineering Norfolk State University, 700 Park Avenue, Norfolk, VA 23504 (United States); Roy, U. N.; Cui, Y. [Department of Physics, Fisk University, 1000, 17 Avenue North, Nashville, TN 37208 (United States); Burger, A. [Department of Physics, Fisk University, 1000, 17 Avenue North, Nashville, TN 37208 (United States); Department of Engineering Norfolk State University, 700 Park Avenue, Norfolk, VA 23504 (United States)

2008-10-23T23:59:59.000Z

274

How to maximize the value of big data with the open source SpagoBI suite through a comprehensive approach  

Science Conference Proceedings (OSTI)

This paper describes the approach adopted by SpagoBI suite (www.spagobi.org) to manage large volumes of heterogeneous structured and unstructured data, to perform real-time Business Intelligence on Big Data streaming and to give meaning to data through ...

Monica Franceschini

2013-08-01T23:59:59.000Z

275

Virtual camera calibration and stereo correspondence of single-lens bi-prism stereovision system using geometrical approach  

Science Conference Proceedings (OSTI)

This paper proposes a simple geometrical ray approach to calibrate the extrinsic parameters of the virtual cameras and solve the stereo correspondence problem of the single-lens bi-prism stereovision system. Each images captured using this system can ... Keywords: Correspondence, Epipolar geometry, Prism, Stereovision, Virtual camera

Kah Bin Lim, Wei Loon Kee, Daolei Wang

2013-10-01T23:59:59.000Z

276

Performance of Titanium-Oxide/Polymer Insulation in Bi-2212/Ag-alloy Round Wire Wound Superconducting Coils  

E-Print Network (OSTI)

Conductor insulation is one of the key components needed to make Ag-alloy clad Bi2Sr2CaCu2O8+x (Bi-2212/Ag) superconducting round wire (RW) successful for high field magnet applications as dielectric standoff and high winding current densities (Jw) directly depend on it. In this study, a TiO2/polymer insulation coating developed by nGimat LLC was applied to test samples and a high field test coil. The insulation was investigated by differential thermal analysis (DTA), thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), dielectric properties measurement, and transport critical current (Ic) properties measurement. About 29% of the insulation by weight is polymer. When the Bi-2212/Ag wire is full heat treated, this decomposes with slow heating to 400{\\deg}C in pure O2. After the full reaction, we found that the TiO2 did not degrade the critical current properties, adhered well to the conductor, and provided a breakdown voltage of >100 V, which allowed the test coil to survive quenching in 31.2 T background field, while providing a 2.6 T field increment. For Bi-2212/Ag RW with a typical diameter of 1.0-1.5 mm, this ~15 um thick insulation allows a very high coil packing factor of ~0.74, whereas earlier alumino-silicate braid insulation only allows packing factors of 0.38-0.48.

Peng Chen; Ulf P Trociewitz; Matthieu Dalban-Canassy; Jianyi Jiang; Eric E Hellstrom; David C Larbalestier

2013-03-20T23:59:59.000Z

277

Magnetic and electrical properties of layered magnets Tl(Cr,Mn,Co)Se{sub 2}  

Science Conference Proceedings (OSTI)

Tl(Cr,Mn,Co)Se{sub 2} crystals were synthesized at T {approx} 1050 K. X-ray diffraction analysis showed that TlCrSe{sub 2}, TlMnSe{sub 2}, and TlCoSe{sub 2} compounds crystallize in the hexagonal crystal system with the lattice parameters: a = 3.6999 A, c = 22.6901 A, c/a {approx} 6.133, z = 3, {rho}{sub x} = 6.209 g/cm{sup 3}; a = 6.53 A, c = 23.96 A, c/a {approx} 3.669, z = 8, {rho}{sub x} = 6.71 g/cm{sup 3}; and a = 3.747 A, c = 22.772 A, c/a {approx} 6.077, z = 3, {rho}{sub x} = 7.577 g/cm{sup 3}, respectively. Magnetic and electrical studies in the temperature range from 80-400 K showed that TlCrSe{sub 2} is a semiconductor ferromagnet, TlMnSe{sub 2} is a semiconductor antiferromagnet, and TlCoSe{sub 2} is a ferrimagnet with a conductivity characteristic of metals. A rather large deviation in the experimental effective magnetic moment for TlCrSe{sub 2} (3.05 {mu}B) from the theoretical value (3.85 {mu}B) is attributed to two-dimensional magnetic ordering in the paramagnetic region of the noticeably layered ferromagnet TlCrSe{sub 2}. In TlCrSe{sub 2}, a correlation between magnetic and electrical properties was detected.

Veliyev, R. G.; Sadikhov, R. Z.; Kerimova, E. M., E-mail: ekerimova@physics.ab.az; Asadov, Yu. G.; Jabbarov, A. I. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2009-02-15T23:59:59.000Z

278

Expanding the One-Dimensional CdS-CdSe Composition Landscape: Axially Anisotropic CdS{sub 1-x}Se{sub x} Nanorods  

Science Conference Proceedings (OSTI)

We report the synthesis and characterization of CdS{sub 1x}Se{sub x} nanorods with axial anisotropy. These nanorods were synthesized via single injection of a mixture of trioctylphosphine sulfur and selenium precursors to a cadmiumphosphonate complex at high temperature. Transmission electron microscopy shows nanoparticle morphology changes with relative sulfur and selenium loading. When the synthetic selenium loading is between 5% and 10% of total chalcogenides, the nanorods exhibit pronounced axial anisotropy characterized by a thick head and a thin tail. The nanorods band gap red shifts with increasing selenium loading. X-ray diffraction reveals that CdS{sub 1x}Se{sub x} nanorods have a wurtzite crystal structure with a certain degree of alloying. High-resolution and energy-filtered transmission electron microscopy and energy-dispersive X-ray spectroscopy confirm the head of the anisotropic nanorods is rich in selenium, whereas the tail is rich in sulfur. Time evolution and mechanistic studies confirm the nanorods form by quick growth of the CdSe-rich head, followed by slow growth of the CdS-rich tail. Metal photodeposition reactions with 575 nm irradiation, which is mostly absorbed by the CdSe-rich segment, show effective electronic communication between the nanorod head and tail segments.

Ruberu, T. Purnima A.; Vela, Javier

2011-06-02T23:59:59.000Z

279

Probing the size and environment induced phase transformation in CdSe quantum dots  

SciTech Connect

The structural and electronic properties of CdSe quantum dots in toluene and drop-casted on Si wafer were investigated by in-situ micro X-ray diffraction, X-ray photoelectron spectroscopy and UV-Vis absorption and emission spectroscopy. The in-situ micro diffraction data show that the CdSe quantum dots capped with TOPO or hexadecylamine (HDA) in toluene exhibit predominantly wurtzite crystal structure, which undergoes a phase transformation to zinc blende crystal structure following drop casting on Si and this phase transition increases with decreasing the size of the CdSe quantum dots. Decreasing the size of quantum dots also increases the Se vacancies that facilitate the phase transformation. The X-ray photoelectron spectra show a systematic increase in the core level binding energies of Cd 3d and Se 3d, the band gap and the Cd/Se ratio as the size of the quantum dots decreases from 6.6nm to 2.1nm. This is attributed to the quantum confinement of CdSe crystallites by the capping ligands in toluene which increases with decreasing the size of the quantum dots. However, drop-casting quantum dots on Si alter the density and arrangement of capping ligands and solvent molecules on the quantum dots which causes significant phase transformation.

Karakoti, Ajay S.; Sanghavi, Shail P.; Nachimuthu, Ponnusamy; Yang, Ping; Thevuthasan, Suntharampillai

2011-11-17T23:59:59.000Z

280

Structure Evolution of CdSe Nanocrystals During Ripening Process Studied by XAFS  

Science Conference Proceedings (OSTI)

The structure evolution of CdSe nanocrystal with different grown sizes (1.9, 2.7 and 3.1 nm, respectively) obtained by size-selective method from colloidal solution is investigated by XAFS. By such purposeful design of samples, we have investigated the isolated ripening process effect on the structure of nanocrystals. The Se K-edge XAFS results of CdSe nanocrystals show that structure disorder of nanocrystal increases from 0.0046 Aa2 to 0.0053 (0.0072) Aa2 while its size grows from 1.9nm to 2.7 (3.1) nm during the ripening growth process. We propose that during ripening process the growth of CdSe nanocyrstal is through the deposition of Cd and Se ions on the surface of CdSe nucleate, and as a consequence, the defects on the nucleate surface lead to larger structural disorder of the resulting CdSe nanocrystal.

Zhang Xinfeng; Wei Feng; Yan Wensheng; Wei Shiqiang [National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 (China)

2007-02-02T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Nanoscale Switching Characteristics of Nearly Tetragonal BiFeO3 Thin Films  

SciTech Connect

We have investigated the nanoscale switching properties of strain-engineered BiFeO3 thin films deposited on LaAlO3 substrates using a combination of scanning probe techniques. Polarized Raman spectral analysis indicates that the nearly tetragonal films have monoclinic (Cc) rather than P4mm tetragonal symmetry. Through local switching-spectroscopy measurements and piezoresponse force microscopy, we provide clear evidence of ferroelectric switching of the tetragonal phase, but the polarization direction, and therefore its switching, deviates strongly from the expected (001) tetragonal axis. We also demonstrate a large and reversible, electrically driven structural phase transition from the tetragonal to the rhombohedral polymorph in this material, which is promising for a plethora of applications.

Mazumdar, Dipanjan [University of Alabama, Tuscaloosa; Shelke, Vilas [University of Alabama, Tuscaloosa; Iliev, Milko [University of Houston, Houston; Jesse, Stephen [ORNL; Kumar, Amit [ORNL; Kalinin, Sergei V [ORNL; Kalinin, Sergei V [ORNL; Gupta, Dr. Arunava [University of Alabama, Tuscaloosa

2010-01-01T23:59:59.000Z

282

Oxygen transfer in Bi{sub 2}O{sub 3}-based solid electrolytes  

Science Conference Proceedings (OSTI)

Materials with high oxygen conductivity are found in the system Bi{sub 2}O{sub 3}-Y{sub 2}O{sub 3}-ZrO{sub 2}. The values of conductivity are higher than those of the majority of bismuth oxide-based solid electrolytes that are thermo-dynamically stable at low temperatures. Doping of bismuth oxide-based solid electrolytes with calcium fluoride results in an increase of the rate of response of electrochemical oxygen sensors. No direct correlation between dynamic and electrochemical characteristics of the sensor has been observed. Utilization of intermediate layers made of materials with mixed oxygen and electronic conductivity between the electrode and the solid electrolyte does not lead to a substantial decrease in the polarization resistance, but increases the rate of response of potentiometric sensors. Electrochemical properties of several rare earth and strontium cobalties as electrodes for bismuth oxide-based solid electrolytes have been studied.

Kharton, V.V.; Naumovich, E.N. [Belarussian State Univ., Minsk (Belarus)

1993-12-01T23:59:59.000Z

283

Evaluation at the medium energy region for Pb-208 and Bi-209  

Science Conference Proceedings (OSTI)

Medium energy nuclear data in the 1--1000 MeV range is necessary to accelerator applications which include spallation neutron sources for radioactive waste treatment and accelerator shielding design, medical applications which include isotopes production and radiation therapy, and space applications. For the design of fission and fusion reactors, the nuclear data file for neutrons below 20 MeV is available and well evaluated. Evaluated nuclear data for protons and data in the medium energy region, however, have not been prepared completely. Evaluation in the medium energy region was performed using the theoretical calculation code ALICE-P or experimental data. In this paper, the evaluation of neutron and proton induced nuclear data for Pb-208 and Bi-209 has been performed using ALICE-P, empirical calculations and new systematics for the fission cross section. The evaluated data are compiled for possible inclusion in the ENDF/B-VI High Energy File. 204 refs., 51 figs., 9 tabs.

Fukahori, Tokio; Pearlstein, S.

1991-01-01T23:59:59.000Z

284

Shocktube driven BiF visible chemical laser. I - Numerical modeling of combustion driven shocktube experiments  

SciTech Connect

Calculations to determine the utility of an HF combustion-driven shocktube in the development of BiF(A-X) visible chemical lasers are presented. The calculations were performed with a one-dimensional reactive-flow Euler solver. The Euler solver uses a time-step split algorithm to advance the calculation over a time interval. A robust design can be developed that will simulate the heating produced in the FN3/TMB/He laser-gas mixture by a CO2 laser. Small amounts of water need to be included in the H2/F2/He driver gas mixture to assist in the thermalization of the vibrationally hot HF. 8 refs.

Smith, W.; Acebal, R.; Benard, D.J.; Graves, B. (Science Applications International Corp., Marietta, GA (United States) Rockwell International Science Center, Thousand Oaks, CA (United States) U.S. Army, Missile Command, Redstone Arsenal, AL (United States))

1992-07-01T23:59:59.000Z

285

Critical currents of YBCO tapes and Bi-2212 wires at different temperatures and magnetic fields  

Science Conference Proceedings (OSTI)

Design studies for the cooling channel of a Muon Collider call for straight and helical solenoids generating field well in excess of the critical fields of state of the art Low Temperature Superconductors (LTS) such as Nb{sub 3}Sn or NbTi. Therefore, High Temperature Superconductors (HTS) will need to be used for the manufacturing of all or certain sections of such magnets to be able to generate and withstand the field levels at the cryogenic temperatures required by the new machine. In this work, two major High Temperature Superconductors - Bi2212 round wires and YBCO coated conductor tapes - are investigated to understand how critical current density of such conductors scales as a function of external field and operating temperature. This is vital information to make conductor choices depending on the application and to proceed with the design of such magnets.

Lombardo, V.; Barzi, e.; Turrioni, D.; Zlobin, A.V.; /Fermilab

2010-08-01T23:59:59.000Z

286

Excitation density distribution in electron-beam-pumped ZnSe semiconductor lasers  

Science Conference Proceedings (OSTI)

The spatial density distribution of the absorbed energy in ZnSe semiconductor lasers excited by electrons with energies from 2 keV to 1 MeV is calculated by the Monte-Carlo method. Approximate analytic expressions determining the absorbed energy of electrons in ZnSe are presented. The pump power threshold in a semiconductor quantum-well ZnSe structure is experimentally determined. The lasing threshold in such structures is estimated as a function of the electron energy. (active media)

Donskoi, E N; Zalyalov, A N; Petrushin, O N; Savel'ev, Yu A; Tarasov, M D; Shigaev, Yu S [Russian Federal Nuclear Center 'All-Russian Scientific Research Institute of Experimental Physics', Sarov, Nizhnii Novgorod Region (Russian Federation); Zhdanova, E V; Zverev, M M; Peregudov, D V [Moscow State Institute of Radio-Engineering, Electronics and Automation (Technical University), Moscow (Russian Federation); Ivanov, S V; Sedova, I V; Sorokin, S V [A.F. Ioffe Physico-Technical Institute, Russian Academy of Sciences, St. Petersburg (Russian Federation)

2008-12-31T23:59:59.000Z

287

An oleic acid-capped CdSe quantum-dot sensitized solar cell  

SciTech Connect

In this letter, we report an oleic acid (OA)-capped CdSe quantum-dot sensitized solar cell (QDSSC) with an improved performance. The TiO{sub 2}/OA-CdSe photoanode in a two-electrode device exhibited a photon-to-current conversion efficiency of 17.5% at 400 nm. At AM1.5G irradiation with 100 mW/cm{sup 2} light intensity, the QDSSCs based on OA-capped CdSe showed a power conversion efficiency of about 1%. The function of OA was to increase QD loading, extend the absorption range and possibly suppress the surface recombination.

Chen Jing [School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798 (Singapore); Song, J. L.; Deng, W. Q. [Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Science, Nanyang Technological University, Singapore 637616 (Singapore); Sun, X. W. [School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798 (Singapore); Institute of Microelectronics, 11 Science Park Road, Science Park II, Singapore 117685 (Singapore); Jiang, C. Y. [Institute of Microelectronics, 11 Science Park Road, Science Park II, Singapore 117685 (Singapore); Lei, W. [School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Huang, J. H.; Liu, R. S. [Department of Chemistry, National Taiwan University, Taipei 106, Taiwan (China)

2009-04-13T23:59:59.000Z

288

Synthetic trends for BiVO{sub 4} photocatalysts: Molybdenum substitution vs. TiO{sub 2} and SnO{sub 2} heterojunctions  

SciTech Connect

The influence of hydrothermal synthesis, thermal post-treatment at 500 Degree-Sign C and Mo content on a series of Bi{sub 1-x/3}V{sub 1-x}Mo{sub x}O{sub 4} (0.02BiVO{sub 4}, thereby inducing a small blue shift of the band gap. This adverse effect can be partially compensated by incorporation of lower Mo amounts (up to ca. 4%), which stabilizes the particle morphology upon calcination. Both BiVO{sub 4}-TiO{sub 2} and BiVO{sub 4}:Mo-TiO{sub 2} heterojunction composites with TiO{sub 2} particle coatings in the 10 nm range were newly synthesized and displayed promising photocatalytic performance in MB degradation. Comparative studies with SnO{sub 2} heterojunctions revealed a superior influence of TiO{sub 2} deposition over SnO{sub 2} coating on both BiVO{sub 4} and Bi{sub 1-x/3}V{sub 1-x}Mo{sub x}O{sub 4} oxide substrates. Different synthetic guidelines for BiVO{sub 4}-based solid solutions and heterojunctions in photocatalytic wastewater treatment and water oxidation are discussed. - Graphical Abstract: The influence of Mo substitution on the structure, morphology and surface area of BiVO{sub 4} photocatalysts was investigated through hydrothermal synthesis of nanoscale Bi{sub 1-x/3}V{sub 1-x}Mo{sub x}O{sub 4} mixed oxides. Their catalytic activity in organic dye degradation and water oxidation was compared to the newly synthesized Bi{sub 1-x/3}V{sub 1-x}Mo{sub x}O{sub 4}-MO{sub 2} (M=Ti, Sn) heterojunctions. Highlights: Black-Right-Pointing-Pointer New hydrothermal approach to nanoscale Bi{sub 1-x/3}V{sub 1-x}Mo{sub x}O{sub 4} photocatalysts. Black-Right-Pointing-Pointer Influence of molybdenum substitution on organic dye degradation and water oxidation. Black-Right-Pointing-Pointer Photocatalytic activity of novel Bi{sub 1-x/3}V{sub 1-x}Mo{sub x}O{sub 4}-MO{sub 2} (M=Ti, Sn) heterojunctions.

Kontic, Roman [Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich (Switzerland); Patzke, Greta R., E-mail: greta.patzke@aci.uzh.ch [Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich (Switzerland)

2012-05-15T23:59:59.000Z

289

American Ref-Fuel of SE CT Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

American Ref-Fuel of SE CT Biomass Facility American Ref-Fuel of SE CT Biomass Facility Jump to: navigation, search Name American Ref-Fuel of SE CT Biomass Facility Facility American Ref-Fuel of SE CT Sector Biomass Facility Type Municipal Solid Waste Location New London County, Connecticut Coordinates 41.5185189°, -72.0468164° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.5185189,"lon":-72.0468164,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

290

Arçelik A.Ş: Compliance Determination (2010-SE-0105) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Arçelik A.Ş: Compliance Determination (2010-SE-0105) Arçelik A.Ş: Compliance Determination (2010-SE-0105) Arçelik A.Ş: Compliance Determination (2010-SE-0105) August 30, 2010 DOE issued a Notice of Compliance Determination after test results revealed that Arçelik's Blomberg BRFB1450 refrigerator-freezer complies with the applicable energy conservation standards. DOE reviewed test results from Arçelik and also performed DOE testing on four units of the product. The DOE had issued a subpoena for information and production of documents requesting test data from Arçelik A.Ş, after DOE received information indicating that Arçelik's Blomberg BRFB1450 model refrigerator-freezer exceeds the applicable Federal energy conservation standards. Arçelik A.Ş: Compliance Determination (2010-SE-0105) More Documents & Publications

291

AeroSys: Noncompliance Determination (2010-SE-0302) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Noncompliance Determination (2010-SE-0302) Noncompliance Determination (2010-SE-0302) AeroSys: Noncompliance Determination (2010-SE-0302) April 13, 2010 DOE issued a Notice of Noncompliance Determination to AeroSys, Inc. finding that basic model THDC-24SG does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. AeroSys must immediately notify each person (or company) to whom AeroSys distributed the noncompliant product that the product does not meet Federal standards. In addition, AeroSys must provide to DOE documents and records showing the number of units AeroSys distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. AeroSys: Noncompliance Determination (2010-SE-0302)

292

Memorandum of Understanding (MOU) between DOE, Northern Pass and SE Group -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Memorandum of Understanding (MOU) between DOE, Northern Pass and SE Memorandum of Understanding (MOU) between DOE, Northern Pass and SE Group - August 12, 2011 Memorandum of Understanding (MOU) between DOE, Northern Pass and SE Group - August 12, 2011 August 12, 2011 - 2:20pm Addthis The Department of Energy (DOE) has selected an integrated team of professionals from three environmental consulting firms to prepare the DOE Environmental Impact Statement (EIS) addressing the Northern Pass Presidential Permit application and signed a Memorandum of Understanding with the group. Addthis Related Articles Departments of State and Energy Establish Global Partnership to Green U.S. Embassies and Consulates Memorandum of Understanding (MOU) between DOE, Northern Pass and SE Group - August 12, 2011 DOE and FWS Sign New MOU on Migratory Bird Protection

293

High-temperature Thermoelectric Properties of Ag2Se.5Te.5  

Science Conference Proceedings (OSTI)

Symposium, Alloys and Compounds for Thermoelectric and Solar Cell Applications II ... This particular alloy displays very low thermal conductivity and competitive ... of Cu2ZnSn(S,Se)4 Thin-films with Conversion Efficiency Higher Than 8%.

294

PHaSE | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Text Size: A A A RSS Feeds FeedbackShare Page Polymer-Based Materials for Harvesting Solar Energy (PHaSE) Director(s): Thomas P. Russell and Paul M. Lahti Lead Institution:...

295

Time resolved fluorescence of CdSe nanocrystals using single molecule spectroscopy  

E-Print Network (OSTI)

A wide variety of spectroscopic studies of CdSe nanocrystals (NCs) are presented in this thesis, all studying some aspect of the temporal evolution of NC fluorescence tinder different conditions. In particular the methods ...

Fisher, Brent R

2005-01-01T23:59:59.000Z

296

Understanding and engineering the photophysics of single CdSe nanocrystals  

E-Print Network (OSTI)

This thesis focuses on uncovering the photophysics of CdSe semiconductor quantum dots (QDs) at the single QD level, and correlating the phenomenological behavior observed at the single QD level to that observed at the ...

Chung, Inhee, 1976-

2004-01-01T23:59:59.000Z

297

Preparation of DNA-Functionalised CdSe/ZnS Quantum Dots  

E-Print Network (OSTI)

We functionalised core-shell CdSe/ZnS quantum dots (QDots) with short-chain 3-mercaptopropionic acid (3MPA) to render these nanocrystalline semiconductor water-soluble. The ligand-exchange reaction was significantly improved ...

Pong, Boon Kin

298

Interband and intraband optical studies of CdSe colloidal nanocrystal films  

E-Print Network (OSTI)

We present results for optical measurements on charged CdSe nanocrystals. The injection of electrons into quantum confined states is confirmed by monitoring changes in the visible and infrared absorption spectra. Interestingly, ...

Toyama, Fumiaki, 1977-

2004-01-01T23:59:59.000Z

299

Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor  

Science Conference Proceedings (OSTI)

We have synthesized highly oriented samples of the superconducting compound FeSe0.5Te0.5 and investigated its mechanical properties. These samples were characterized by scanning electron microscopy(SEM) with energy-dispersive analysis

Jorge Luiz Pimentel Jnior; Paulo Pureur; Cristiano Santos Lopes; Francisco Carlos Serbena; Carlos Eugnio Foerster; Simone Aparecida da Silva; Alcione Roberto Jurelo; Adilson Luiz Chinelatto

2012-01-01T23:59:59.000Z

300

Development of a Diffusion Mobility Database for Cu-In-Se  

Science Conference Proceedings (OSTI)

... ? (Cu) 0.545 (Cu,In) 0.122 (In) 0.333 ?3 stoichiometric phases: ? (Cu ... In in Se In in In Page 21. Modeling of Stoichiometric Intermetallic Phases ...

2012-10-04T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

New Thin Film CuGaSe2/Cu(In,Ga)Se2 Bifacial, Tandem Solar Cell with Both Junctions Formed Simultaneously  

Science Conference Proceedings (OSTI)

Thin films of CuGaSe2 and Cu(In,Ga)Se2 were evaporated by the 3-stage process onto opposite sides of a single piece of soda-lime glass, coated bifacially with an n+/-TCO. Junctions were formed simultaneously with each of the p-type absorbers by depositing thin films of n-CdS via chemical bath deposition (CBD) at 60C. The resulting four-terminal device is a non-mechanically stacked, two-junction tandem. The unique growth sequence protects the temperature-sensitive p/n junctions. The initial device (h= 3.7%, Voc= 1.1 V[AM1.5]) suffered from low quantum efficiencies. Initial results are also presented from experiments with variations in growth sequence and back reflectors.

Young, D. L.; Abu-Shama, J.; Noufi, R.; Li, X.; Keane, J.; Gessert, T. A.; Ward, J. S.; Contreas, M.; Symko-Davies, M.; Coutts, T. J.

2002-05-01T23:59:59.000Z

302

Unique Challenges Accompany Thick-Shell CdSe/nCdS (n > 10) Nanocrystal Synthesis  

SciTech Connect

Thick-shell CdSe/nCdS (n {ge} 10) nanocrystals were recently reported that show remarkably suppressed fluorescence intermittency or 'blinking' at the single-particle level as well as slow rates of Auger decay. Unfortunately, whereas CdSe/nCdS nanocrystal synthesis is well-developed up to n {le} 6 CdS monolayers (MLs), reproducible syntheses for n {ge} 10 MLs are less understood. Known procedures sometimes result in homogeneous CdS nucleation instead of heterogeneous, epitaxial CdS nucleation on CdSe, leading to broad and multimodal particle size distributions. Critically, obtained core/shell sizes are often below those desired. This article describes synthetic conditions specific to thick-shell growth (n {ge} 10 and n {ge} 20 MLs) on both small (sub2 nm) and large (>4.5 nm) CdSe cores. We find added secondary amine and low concentration of CdSe cores and molecular precursors give desired core/shell sizes. Amine-induced, partial etching of CdSe cores results in apparent shell-thicknesses slightly beyond those desired, especially for very-thick shells (n {ge} 20 MLs). Thermal ripening and fast precursor injection lead to undesired homogeneous CdS nucleation and incomplete shell growth. Core/shells derived from small CdSe (1.9 nm) have longer PL lifetimes and more pronounced blinking at single-particle level compared with those derived from large CdSe (4.7 nm). We expect our new synthetic approach will lead to a larger throughput of these materials, increasing their availability for fundamental studies and applications.

Guo, Y; Marchuk, K; Abraham, R; Sampat, S; Abraham, R.; Fang, N; Malko, AV; Vela, J

2011-12-23T23:59:59.000Z

303

Efficient cw lasing in a Cr{sup 2+}:CdSe crystal  

Science Conference Proceedings (OSTI)

Continuous wave lasing in a Cr{sup 2+}:CdSe crystal is obtained for the first time. The Cr{sup 2+}:CdSe crystal pumped by a 1.908-{mu}m thulium fibre laser generated 1.07 W at 2.623 {mu}m with the quantum slope efficiency with respect to the absorbed power equal to 60%. (letters)

Akimov, V A [Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow Region (Russian Federation); Kozlovskii, V I; Korostelin, Yu V; Landman, A I; Podmar'kov, Yu P; Skasyrsky, Ya K; Frolov, M P [P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

2007-11-30T23:59:59.000Z

304

Non-H{sub 2}Se, ultra-thin CuInSe{sub 2} devices. Annual subcontract report, November 10, 1992--November 9, 1993  

DOE Green Energy (OSTI)

This report describes advances made during Phase II (November 10, 1992-November 9, 1993) of a three-phase, cost-shared subcontract whose ultimate goal is the demonstration of thin film CuInSe{sub 2} photovoltaic modules prepared by methods adaptable to safe, high yield, high volume manufacturing. At the end of Phase I, EPV became one of the first groups to clear the 10% efficiency barrier for CIS cells prepared by non-H{sub 2}Se selenization. During Phase II a total area efficiency of 12.5% was achieved for a 1 cm{sup 2} cell. The key achievement of Phase II was the production of square foot CIS modules without the use of H{sub 2}Se. This is seen as a crucial step towards the commercialization of CIS. Using a novel interconnect technology, EPV delivered an 8.0% aperture area efficiency mini-module and a 6.2% aperture area efficiency 720 cm{sub 2} module to NREL. On the processing side, advances were made in precursor formation and the selenization profile, both of which contributed to higher quality CIS. The higher band gap quaternary chalcopyrite material CuIn(S{sub x}, Se{sub 1{minus}X}){sub 2} was prepared and 8% cells were fabricated using this material. Device analysis revealed a correlation between long wavelength quantum efficiency and the CIS Cu/In ratio. Temperature dependent studies highlighted the need for high V{sub OC} devices to minimize the impact of the voltage drop at operating temperature. Numerical modeling of module performance was performed in order to identify the correct ZnO sheet resistance for modules. Efforts in Phase III will focus on increase of module efficiency to 9-10%, initiation of an outdoor testing program, preparation of completely uniform CIS plates using second generation selenization equipment, and exploration of alternative precursors for CIS formation.

Delahoy, A.E.; Britt, J.; Faras, F.; Kiss, Z. [Energy Photovoltaics, Inc., Princeton, NY (United States)

1994-09-01T23:59:59.000Z

305

Hidden Superlattice in Tl2(SC6H4S) and Tl2(SeC6H4Se) Solved from Powder X-ray Diffraction  

SciTech Connect

The crystal structures of the isostructural title compounds poly[({mu}-benzene-1,4-dithiolato)dithallium], Tl{sub 2}(SC{sub 6}H{sub 4}S), and poly[({mu}-benzene-1,4-diselenolato)dithallium], Tl{sub 2}(SeC{sub 6}H{sub 4}Se), were solved by simulated annealing from high-resolution synchrotron X-ray powder diffraction. Rietveld refinements of an initial structure with one formula unit per triclinic cell gave satisfactory agreement with the data, but led to a structure with impossibly close non-bonded contacts. A disordered model was proposed to alleviate this problem, but an alternative supercell structure leads to slightly improved agreement with the data. The isostructural superlattice structures were confirmed for both compounds through additional data collection, with substantially better counting statistics, which revealed the presence of very weak superlattice peaks not previously seen. Overall, each structure contains Tl-S or Tl-Se two-dimensional networks, connected by phenylene bridges. The sulfur (or selenium) coordination sphere around each thallium is a highly distorted square pyramid or a 'see-saw' shape, depending upon how many Tl-S or Tl-Se interactions are considered to be bonds. In addition, the two compounds contain pairs of Tl{sup I} ions that interact through a closed-shell 'thallophilic' interaction: in the sulfur compound there are two inequivalent pairs of Tl atoms with Tl-Tl distances of 3.49 and 3.58 {angstrom}, while in the selenium compound those Tl-Tl interactions are at 3.54 and 3.63 {angstrom}.

K Stone; D Turner; M Singh; T Vaid; P Stephens

2011-12-31T23:59:59.000Z

306

Texture improvements in the high-temperature superconducting Bi?Sr?Ca?Cu?Ox̳/Ag system via surface energy driven grain alignment  

E-Print Network (OSTI)

The relation between processing, microstructure, and material property was investigated in the high-temperature superconducting Bi?Sr?Ca?Cu?Ox̳/Ag system. Experiments were based on a theoretical surface energy model ...

Vodhanel, Mark E

2005-01-01T23:59:59.000Z

307

The I{sub C}R{sub N} value in intrinsic Josephson tunnel junctions in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} (Bi2212) mesas.  

Science Conference Proceedings (OSTI)

The c-axis current-voltage I(V) characteristics have been obtained on a set of mesas of varying height sculpted on Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} (Bi2212) crystals intercalated with HgB{sub 2}. The intercalation, along with the small number of junctions in the mesa, N = 6-30, minimizes the degree of self-heating, leading to a consistent Josephson critical current, I{sub C}, among junctions in the mesa. The Bi2212 crystals with a bulk T{sub C} = 74 K are overdoped and display negligible pseudogap effects allowing an accurate measure of the normal state resistance, R{sub N}. These properties make the mesas nearly ideal for the determination of the Josephson I{sub C}R{sub N} product. We find I{sub C}R{sub N} values consistently {approx}30% of the quasiparticle gap parameter, {Delta}/e, which was measured independently using a mechanical contact, break junction technique. The latter was necessitated by higher bias heating effects in the mesas which prevented direct measurements of the superconducting gap. These values are among the highest reported and may represent the maximum intrinsic value for I{sub C}R{sub N}. The results indicate that the c-axis transport is a mixture of coherent and incoherent tunneling.

Kurter, C.; Ozyuzer, L.; Zasadzinski, J. F.; Hinks, D. G.; Gray, K. E. (Materials Science Division); (Illinois Inst. of Tech.); (Izmir Inst. of Tech.); (Univ. of Maryland)

2010-11-01T23:59:59.000Z

308

Influence of adsorbed Bi on the chemisorption properties of Pt(111): H/sub 2/, CO, and O/sub 2/  

DOE Green Energy (OSTI)

The growth modes and interactions of vapor-deposited Bi on a clean Pt(111) surface and its effects on the chemisorption of H/sub 2/, CO, and O/sub 2/ have been monitored by Auger electron spectroscopy (AES), low-energy electron diffraction (LEED), and thermal desorption mass spectroscopy (TDMS). For submonolayer Bi coverages, LEED patterns were observed to progress with increasing coverage through p(2 x 2), (..sqrt..3 x ..sqrt..3)R30/sup 0/, p(3 x 3), and p(4 x 4) structures. The Bi TDMS and AES data are consistent with absolute coverages of 0.25, 0.33, 0.44, and 0.56, respectively. For submonolayer coverages of this s/sup 2/p/sup n/-type metal, Bi adatoms are strongly repulsive and maximize their spacing subject to the constraints of the Pt(111) sites. This is to be contrasted with d/sup n/s/sup m/-type metals such as Ag, Cu, and Au on Pt(111), which show attractive interactions and coalesce into 2d islands. In chemisorption of small molecules on Pt(111), each Bi adatom blocks about two Pt surface atoms. An ensemble of two adjacent Pt sites is required for both dissociative H/sub 2/ and molecular O/sub 2/ adsorption vs one site for CO adsorption; therefore, uptake of the former adsorbates is much more severely attenuated at theta/sub Bi/ increases.

Paffett, M.T.; Campbell, C.T.; Taylor, T.N.

1984-01-01T23:59:59.000Z

309

Hyperfine structure and nuclear hyperpolarization observed in the bound exciton luminescence of Bi donors in natural Si  

E-Print Network (OSTI)

As the deepest group V donor in Si, Bi has by far the largest hyperfine interaction, and also a large I=9/2 nuclear spin. At zero field this splits the donor ground state into states having total spin 5 and 4, which are fully resolved in the photoluminescence spectrum of Bi donor bound excitons. Under a magnetic field, the 60 expected allowed transitions cannot be individually resolved, but the effects of the nuclear spin distribution, -9/2 nuclear spin, with sign opposite to the expected equilibrium polarization, is observed to result from the nonresonant optical excitation. This is very similar to the recently reported optical hyperpolarization of P donors observed by EPR at higher magnetic fields. We introduce a new model to explain this effect, and predict that it may be very fast.

T. Sekiguchi; M. Steger; K. Saeedi; M. L. W. Thewalt; H. Riemann; N. V. Abrosimov; N. Noetzel

2009-12-19T23:59:59.000Z

310

Novel Approaches to Wide Bandgap CuInSe2 Based Absorbers  

SciTech Connect

This project targeted the development of high performance wide bandgap solar cells based on thin film alloys of CuInSe2 to relax constraints on module design and enable tandem solar cell structures. This addressed goals of the Solar Energy Technologies Program for Next Generation PV to develop technology needed for higher thin film module efficiency as a means to reduce costs. Specific objectives of the research project were: 1) to develop the processes and materials required to improve the performance of wide bandgap thin film solar cells based on alloys of CuInSe2, and 2) to provide the fundamental science and engineering basis for the material, electronic, and device properties required to effectively apply these processes and materials to commercial manufacture. CuInSe2-based photovoltaics have established the highest efficiencies of the thin film materials at both the cell and module scales and are actively being scaled up to commercialization. In the highest efficiency cells and modules, the optical bandgap, a function of the CuInSe2-based alloy composition, is relatively low compared to the optimum match to the solar spectrum. Wider bandgap alloys of CuInSe2 produce higher cell voltages which can improve module performance and enable the development of tandem solar cells to boost the overall efficiency. A focus for the project was alloying with silver to form (AgCu)(InGa)Se2 pentenary thin films deposited by elemental co-evaporation which gives the broadest range of control of composition and material properties. This alloy has a lower melting temperature than Ag-free, Cu-based chalcopyrite compounds, which may enable films to be formed with lower defect densities and the (AgCu)(InGa)Se2 films give improved material properties and better device performance with increasing bandgap. A comprehensive characterization of optical, structural, and electronic properties of (AgCu)(InGa)Se2 was completed over the complete compositional range 0 ? Ga/(In+Ga) ? 1 and 0 ? Ag/(Ag+Cu) ? 1. Evidence of improved material quality includes reduced sub-bandgap optical absorption, sharper bandtails, and increased grain size with Ag addition. The Ag alloying was shown to increase the range of bandgaps over which solar cells can be fabricated without any drop-off in performance. With bandgap greater than 1.6 eV, in the range needed for tandem solar cells, (AgCu)(InGa)Se2 gave higher efficiency than other CuInSe2-based alloys. Using a simple single-stage co-evaporation process, a solar cell with 17.6% efficiency using a film with bandgap = 1.3 eV was achieved, demonstrating the viability of (AgCu)(InGa)Se2 for high efficiency devices. With a three-stage co-evaporation process for (AgCu)(InGa)Se2 deposition a device with efficiency = 13.0 % and VOC = 890 mV with JSC = 20.5 mA/cm2, FF = 71.3% was achieved. This surpasses the performance of other wide bandgap CuInSe2-based solar cells. Detailed characterization of the electronic properties of the materials and devices including the application of advanced admittance-based easements was completed.

William N. Shafarman

2011-04-28T23:59:59.000Z

311

¿A dónde se va la energía?  

NLE Websites -- All DOE Office Websites (Extended Search)

¿A dónde se va la energía? ¿A dónde se va la energía? Sólo aproximadamente el 14% -26% de la energía del combustible que usted pone en su tanque se usa para mover su coche o operar accesorios útiles, como el aire acondicionado. El resto de la energía es perdida en ineficiencias del motor, de la líínea de conducción y al estar a ralentí. Por lo tanto, el potencial para mejorar la eficiencia del combustible con tecnologías avanzadas es enorme. Combinadas Ciudad Carretera Conducir en Ciudad Los requerimientos de energía mostrados en el diagrama se calcularon conduciendo por la ciudad en el modo para-avanzar usando el procedimiento de la EPA FTP-75 Test. Perdidas de Motor En vehículos propulsados por gasolina, gran parte de la energía del combustible se pierde en el motor, primordialmente al calentarse. Pequeñas

312

Absorption and spectra of optical parameters in amorphous solid solutions of the Se-S system  

Science Conference Proceedings (OSTI)

A study of the optical properties of the Se-S system has revealed a correlation between the dependences of optical absorption coefficient {alpha}, effective concentration of charged defects N{sub t}, and characteristic energy E{sub 0} corresponding to the Urbach optical absorption in the spectral region where the Urbach rule works for the Se-S system on the S concentration. These optical properties are controlled by charged defects. It is shown that concentrations of intrinsic charged defects can be changed by variation in composition of the Se-S system. Reflectance spectra of amorphous solid solutions of the Se-S system are studied within the energy range 1-6 eV. Using the Kramers-Kronig method, spectral dependences of optical constants and derivative optical and dielectric functions are calculated. Variation in the spectra of optical parameters with composition of the Se-S system are explained within a cluster model in which the density of electron states is a function of atomic configurations in clusters, i.e., of the character of a short-range order.

Djalilov, N. Z.; Damirov, G. M., E-mail: gafil@phytsics.ab.az [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2011-04-15T23:59:59.000Z

313

V-181: Oracle Java SE Critical Patch Update Advisory - June 2013 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1: Oracle Java SE Critical Patch Update Advisory - June 2013 1: Oracle Java SE Critical Patch Update Advisory - June 2013 V-181: Oracle Java SE Critical Patch Update Advisory - June 2013 June 19, 2013 - 1:06am Addthis PROBLEM: Oracle Java SE Critical Patch Update Advisory - June 2013 PLATFORM: Version(s): 5.0 Update 45, 6 Update 45, 7 Update 21; and prior versions ABSTRACT: Multiple vulnerabilities were reported in Oracle Java. REFERENCE LINKS: Oracle Java SE Critical Patch Update June 2013 SecurityTracker Alert ID: 1028679 CVE-2013-1500, CVE-2013-1571 CVE-2013-2400, CVE-2013-2407 CVE-2013-2412, CVE-2013-2437 CVE-2013-2442, CVE-2013-2443 CVE-2013-2444, CVE-2013-2445 CVE-2013-2446, CVE-2013-2447 CVE-2013-2448, CVE-2013-2449 CVE-2013-2450, CVE-2013-2451 CVE-2013-2452, CVE-2013-2453 CVE-2013-2454, CVE-2013-2455 CVE-2013-2456, CVE-2013-2457

314

T-558: Oracle Java SE and Java for Business Critical Patch Update Advisory  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8: Oracle Java SE and Java for Business Critical Patch Update 8: Oracle Java SE and Java for Business Critical Patch Update Advisory - February 2011 T-558: Oracle Java SE and Java for Business Critical Patch Update Advisory - February 2011 February 16, 2011 - 7:00am Addthis PROBLEM: Oracle Java SE and Java for Business Critical Patch Update Advisory - February 2011. PLATFORM: JDK and JRE 6 Update 23 and earlier for Windows, Solaris, and Linux JDK 5.0 Update 27 and earlier for Solaris 9 SDK 1.4.2_29 and earlier for Solaris 8 JDK and JRE 6 Update 23 and earlier for Windows, Solaris and Linux JDK and JRE 5.0 Update 27 and earlier for Windows, Solaris and Linux SDK and JRE 1.4.2_29 and earlier for Windows, Solaris and Linux ABSTRACT: This Critical Patch Update contains 21 new security fixes for Oracle Java SE and Java for Business. 19 of these vulnerabilities may be remotely

315

Manufacturing of High-Efficiency Bi-Facial Tandem Concentrator Solar Cells: February 20, 2009--August 20, 2010  

DOE Green Energy (OSTI)

Spire Semiconductor made concentrator photovoltaic (CPV) cells using a new bi-facial growth process and met both main program goals: a) 42.5% efficiency 500X (AM1.5D, 25C, 100mW/cm2); and b) Ready to supply at least 3MW/year of such cells at end of program. We explored a unique simple fabrication process to make a N/P 3-junction InGaP/GaAs/InGaAs tandem cells . First, the InGaAs bottom cell is grown on the back of a GaAs wafer. The wafers are then loaded into a cassette, spin-rinsed to remove particles, dipped in dilute NH4OH and spin-dried. The wafers are then removed from the cassette loaded the reactor for GaAs middle and InGaP top cell growth on the opposite wafer face (bi-facial growth). By making the epitaxial growth process a bit more complex, we are able to avoid more complex processing (such as large area wafer bonding or epitaxial liftoff) used in the inverted metamorphic (IMM) approach to make similar tandem stacks. We believe the yield is improved compared to an IMM process. After bi-facial epigrowth, standard III-V cell steps (back metal, photolithography for front grid, cap etch, AR coat, dice) are used in the remainder of the process.

Wojtczuk , S.

2011-06-01T23:59:59.000Z

316

Magnetic field and field orientation dependence of the critical current density in Bi-2212 round wires and other HTS conductors  

Science Conference Proceedings (OSTI)

The authors have performed measurements of the magnetic field dependence of the critical current density J{sub c} of Bi-2212/Ag round wire produced by isothermal melt processing. In contrast to the case for flat tape, there is very little dependence of J{sub c} on the direction of the magnetic field as it is rotated normal to the wire axis, which is the direction of the nominal current flow. However, when the angle of the magnetic field direction is rotated from normal to the wire axis to parallel to that axis, J{sub c} at 64 K and 0.2 T increases by more than a factor of four. Again, this is in contrast to the results observed for Bi-2212/Ag and Bi-2223/Ag flat tapes, which show no anisotropy under similar experimental conditions. They can explain these differences in angular anisotropy by referring to the microstructure of these two conductor types, which have distinctly different types of grain alignment. They discuss the general behavior of the dependence of J{sub c} on the orientation of a magnetic field for high temperature superconductors.

Willis, J.O.; Holesinger, T.G.; Coulter, J.Y.; Maley, M.P. [Los Alamos National Lab., NM (United States). Superconductivity Technology Center

1996-10-01T23:59:59.000Z

317

Performance of Anode-Supported Solid Oxide Fuel Cell with Thin Bi-Layer Electrolyte by Pulsed Laser Deposition  

Science Conference Proceedings (OSTI)

Anode-supported yttria stabilized zirconia (YSZ)/samaria doped ceria (SDC) bi-layer electrolytes with uniform thickness and high density were fabricated by pulsed laser deposition at 1000 degrees C. Fuel cells with such bi-layer electrolytes were fabricated and tested, yielding open circuit voltages from 0.94 to 1.0 V at 600-700 degrees C. Power densities from 0.4 to 1.0 W cm{sup -2} at 0.7 V were achieved in air at temperatures of 600-700 degrees C. Cell performance was improved in flowing oxygen, with an estimated peak power density of over 2 W cm{sup -2} at 650 degrees C, assuming the same overall resistance over the entire range of current density. The high cell performance was attributed to the very low ohmic resistance of the fuel cell, owing to the small thickness of the electrolyte. Stable performance was also demonstrated in that the voltage of the fuel cell showed very little change at a constant current density of 1 A cm{sup -2} during more than 400 hours of operation at 650 degrees C in flowing oxygen. SEM analysis of the fuel cell after testing showed that the bi-layer electrolyte had retained its chemical and mechanical integrity.

Lu, Zigui; Hardy, John S.; Templeton, Jared W.; Stevenson, Jeffry W.; Fisher, Daniel; Wu, Naijuan; Ignatiev, Alex

2012-07-15T23:59:59.000Z

318

Luminescence of CdSe/ZnS quantum dots infiltrated into an opal matrix  

SciTech Connect

The effect of the photonic band gap in the photonic crystal, the synthesized SiO{sub 2} opal with embedded CdSe/ZnS quantum dots, on its luminescence in the visible spectral region is studied. It is shown that the position of the photonic band gap in the luminescence and reflectance spectra for the infiltrated opal depends on the diameter of the constituent nanospheres and on the angle of recording the signal. The optimal conditions for embedding the CdSe/ZnS quantum dots from the solution into the opal matrix are determined. It is found that, for the opal-CdSe/ZnS nanocomposites, the emission intensity decreases and the luminescence decay time increases in the spatial directions, in which the spectral positions of the photonic band gap and the luminescence peak of the quantum dots coincide.

Gruzintsev, A. N. [Russian Academy of Sciences, Institute of Microelectronics Technology and Ultra-High-Purity Materials (Russian Federation)], E-mail: gran@ipmt-hpm.ac.ru; Emelchenko, G. A.; Masalov, V. M. [Russian Academy of Sciences, Institute of Solid State Physics (Russian Federation); Yakimov, E. E. [Russian Academy of Sciences, Institute of Microelectronics Technology and Ultra-High-Purity Materials (Russian Federation); Barthou, C.; Maitre, A. [Institut des NanoSciences (France)

2009-02-15T23:59:59.000Z

319

Formation of phases in the films of a Ag-In-Se system  

Science Conference Proceedings (OSTI)

Processes of electron-diffraction structure analysis have been used to study the processes of phase formation and phase transitions in thin layers of a Ag-In-Se system. The phases formed at the onset of interaction between the films and phase transformations occurring during annealing of the samples in vacuum are established. It is found that thin films of the AgInSe{sub 2} compound formed as a result of simultaneous or consecutive deposition of components are amorphous, and crystallization brings about the formation of textured films with high structural quality

Ismayilov, D. I.; Kerimova, N. K., E-mail: kerimova-nurlana@mail.ru [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan)

2009-09-15T23:59:59.000Z

320

Wet chemical synthesis and characterization of AgGaSe{sub 2} nanoparticles  

SciTech Connect

AgGaSe{sub 2} compound semiconductor nanoparticles were synthesized by wet chemical method using mercaptoacetic acid as a capping agent at room temperature. The synthesized powders belong to chalcopyrite structure confirmed by powder XRD. The surface morphology and crystalline size were observed by high resolution scanning electron microscope (HR-SEM). The stoichiometric composition of AgGaSe{sub 2} nanoparticles was confirmed by Energy dispersive X-ray (EDX) analysis. Different functional group vibrations of mercaptoacetic acid capped nanoparticles were studied using FT-IR spectrum. The absorbance and optical bandgap of the nanoparticles were determined using diffuse reflectance spectroscopy (DRS).

Sugan, S.; Dhanasekaran, R. [Crystal Growth Centre, Anna University, Chennai- 600 025 (India)

2013-06-03T23:59:59.000Z

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321

Investigations of CuInSe sub 2 thin films and contacts  

DOE Green Energy (OSTI)

This report describes research into electrical contacts for copper indium diselenide (CuInSe{sub 2}) polycrystalline thin films used for solar cell applications. Molybdenum contacts have historically been the most promising for heterojunction solar cells. This program studied contact stability by investigating thermally induced bilayer reactions between molybdenum and copper, indium, and selenium. Because selenization is widely used to fabricate CuInSe{sub 2} thin films for photovoltaic cells, a second part of the program investigated how the morphologies, phases, and reactions of pre-selenization Cu-In structures are affected by the deposition process and heat treatments. 7 refs., 6 figs.

Nicolet, M.A. (California Inst. of Tech., Pasadena, CA (United States))

1991-10-01T23:59:59.000Z

322

Preparation and investigation of the quaternary alloy CuTaInSe{sub 3}  

Science Conference Proceedings (OSTI)

Polycrystalline samples of the quaternary alloy CuTaInSe{sub 3} were prepared by the usual melt and anneal technique. The analysis of the diffraction pattern indicates a single phase which indexes as a tetragonal chalcopyrite-like structure with lattice parameters a = 5.7837 {+-} 0.0002 A; c = 11.6208 {+-} 0.0007 A and V = 389 {+-} 1 A{sup 3}. Differential thermal analysis shows that the melting transition of CuTaInSe{sub 3} is incongruent with large liquid + solids regions.

Grima-Gallardo, P. [Centro de Estudios en Semiconductores (CES), Dpto. Fisica, Facultad de Ciencias, La Hechicera, Merida (Venezuela)], E-mail: peg@ula.ve; Munoz, M.; Duran, S. [Centro de Estudios en Semiconductores (CES), Dpto. Fisica, Facultad de Ciencias, La Hechicera, Merida (Venezuela); Delgado, G.E. [Laboratorio de Cristalografia, Dpto. Quimica, Facultad de Ciencias, Universidad de Los Andes, Merida 5101 (Venezuela); Quintero, M.; Ruiz, J. [Centro de Estudios en Semiconductores (CES), Dpto. Fisica, Facultad de Ciencias, La Hechicera, Merida (Venezuela)

2007-12-04T23:59:59.000Z

323

DEPENDENCE OF BAND GAP ON DEPOSITION PARAMETERS IN CdSe SINTERED FILMS  

E-Print Network (OSTI)

II-VI semiconductors form an important class of opto-electronic materials. CdSe is a promising material for the fabrication of photovoltaic devices. Polycrystalline CdSe films have been deposited onto ultra clean glass substrates by sintering process. The optical band gap of these films was determined by reflectance measurements in wavelength range 400-850 nm. The band gap of these films was observed to increase with increase in sintering temperature and sintering time separately. The crystal structure and lattice parameter of these films were determined from x-ray diffractograms. The films were polycrystalline in nature having cubic zinc blende structure.

unknown authors

2008-01-01T23:59:59.000Z

324

Confinement in PbSe wires grown by rf magnetron sputtering  

SciTech Connect

Lead selenide (PbSe) nanowires were grown by magnetron sputtering on silicon with silicon dioxide (SiO{sub 2}/Si) substrates, and characterized by scanning electron microscopy, x-ray diffraction, Fourier transform infrared spectroscopy, photoluminescence, and x-ray photoelectron spectroscopy. Closely packed PbSe nanowires of approximately 100 nm diameter grew in the <111> rock-salt cubic structure orientation. These large wires showed a large blueshift in the luminescence and absorption compared to the bulk crystal, demonstrating quantum confinement. This is attributed to a strong built-in field due to surface states, band bending, and a depletion layer which confines the carrier states.

Jung, Hyeson; Kuljic, Rade [Department of Electrical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607 (United States); Stroscio, Michael A. [Department of Electrical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607 (United States); Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607 (United States); Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607 (United States); Dutta, Mitra [Department of Electrical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607 (United States); Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607 (United States)

2010-04-12T23:59:59.000Z

325

Method of fabricating high-efficiency Cu(In,Ga)(Se,S){sub 2} thin films for solar cells  

DOE Patents (OSTI)

A process for producing a slightly Cu-poor thin film of Cu(In,Ga)(Se,S){sub 2} comprises depositing a first layer of (In,Ga){sub x} (Se,S){sub y} followed by depositing just enough Cu+(Se,S) or Cu{sub x} (Se,S) to produce the desired slightly Cu-poor material. In a variation, most, but not all, (about 90 to 99%) of the (In,Ga){sub x} (Se,S){sub y} is deposited first, followed by deposition of all the Cu+(Se,S) or Cu{sub x} (Se,S) to go near stoichiometric, possibly or even preferably slightly Cu-rich, and then in turn followed by deposition of the remainder (about 1 to 10%) of the (In,Ga){sub x} (Se,S){sub y} to end with a slightly Cu-poor composition. In yet another variation, a small portion (about 1 to 10%) of the (In,Ga){sub x} (Se,S){sub y} is first deposited as a seed layer, followed by deposition of all of the Cu+(Se,S) or Cu{sub x} (Se,S) to make a very Cu-rich mixture, and then followed deposition of the remainder of the (In,Ga){sub x} (Se,S){sub y} to go slightly Cu-poor in the final Cu(In,Ga)(Se,S){sub 2} thin film. 5 figs.

Noufi, R.; Gabor, A.M.; Tuttle, J.R.; Tennant, A.L.; Contreras, M.A.; Albin, D.S.; Carapella, J.J.

1995-08-15T23:59:59.000Z

326

Method of fabricating high-efficiency Cu(In,Ga)(SeS).sub.2 thin films for solar cells  

DOE Patents (OSTI)

A process for producing a slightly Cu-poor thin film of Cu(In,Ga)(Se,S).sub.2 comprises depositing a first layer of (In,Ga).sub.x (Se,S).sub.y followed by depositing just enough Cu+(Se,S) or Cu.sub.x (Se,S) to produce the desired slightly Cu-poor material. In a variation, most, but not all, (about 90 to 99%) of the (In,Ga).sub.x (Se,S).sub.y is deposited first, followed by deposition of all the Cu+(Se,S) or Cu.sub.x (Se,S) to go near stoichiometric, possibly or even preferably slightly Cu-rich, and then in turn followed by deposition of the remainder (about 1 to 10%) of the (In,Ga).sub.x (Se,S).sub.y to end with a slightly Cu-poor composition. In yet another variation, a small portion (about 1 to 10%) of the (In,Ga).sub.x (Se,S).sub.y is first deposited as a seed layer, followed by deposition of all of the Cu+(Se,S) or Cu.sub.x (Se,S) to make a very Cu-rich mixture, and then followed deposition of the remainder of the (In,Ga).sub.x (Se,S).sub.y to go slightly Cu-poor in the final Cu(In,Ga)(Se,S).sub.2 thin film.

Noufi, Rommel (Golden, CO); Gabor, Andrew M. (Boulder, CO); Tuttle, John R. (Denver, CO); Tennant, Andrew L. (Denver, CO); Contreras, Miguel A. (Golden, CO); Albin, David S. (Denver, CO); Carapella, Jeffrey J. (Evergreen, CO)

1995-01-01T23:59:59.000Z

327

Alfvenic modes in a bi-Maxwellian electron-ion plasma  

SciTech Connect

Employing linearized Vlasov-Maxwell system, we derive a generalized dielectric tensor for a magnetized nonrelativistic bi-Maxwellian electron-ion plasma. Assuming low frequency waves in a low {beta} plasma, a new dispersion relation describing oblique propagation of the Alfvenic modes is determined, incorporating the temperature anisotropies of both the electrons and ions and their finite Larmor radii effects. From the resulting dispersion relation for kinetic Alfven waves, analytical expressions are determined for both the kinetic (v{sub t||}){sub i}<<{omega}/k{sub ||}<>v{sub t||e,i} and {beta}<

Bashir, M. F.; Iqbal, Z.; Aslam, I. [Salam Chair, Government College University Lahore, Punjab 54000 (Pakistan); Department of Physics, Government College University Lahore, Punjab 54000 (Pakistan); Murtaza, G. [Salam Chair, Government College University Lahore, Punjab 54000 (Pakistan)

2010-10-15T23:59:59.000Z

328

Abrupt Onset of a Second Energy Gap at the Superconducting Transition of Underdoped Bi2212  

Science Conference Proceedings (OSTI)

The superconducting gap--an energy scale tied to the superconducting phenomena--opens on the Fermi surface at the superconducting transition temperature ({Tc}) in conventional BCS superconductors. In underdoped high-{Tc} superconducting copper oxides, a pseudogap (whose relation to the superconducting gap remains a mystery) develops well above {Tc}. Whether the pseudogap is a distinct phenomenon or the incoherent continuation of the superconducting gap above {Tc} is one of the central questions in high-{Tc} research. Although some experimental evidence suggests that the two gaps are distinct, this issue is still under intense debate. A crucial piece of evidence to firmly establish this two-gap picture is still missing: a direct and unambiguous observation of a single-particle gap tied to the superconducting transition as function of temperature. Here we report the discovery of such an energy gap in underdoped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} in the momentum space region overlooked in previous measurements. Near the diagonal of Cu-O bond direction (nodal direction), we found a gap that opens at {Tc} and has a canonical (BCS-like) temperature dependence accompanied by the appearance of the so-called Bogoliubov quasi-particles, a classical signature of superconductivity. This is in sharp contrast to the pseudogap near the Cu-O bond direction (antinodal region) measured in earlier experiments

Lee, W.S.; Vishik, I.M.; /Stanford U., Appl. Phys. Dept. /SLAC, SSRL; Tanaka, K.; /Stanford U., Appl. Phys. Dept. /SLAC, SSRL /LBNL, ALS; Lu, D.H.; Sasagawa, T.; /Stanford U., Appl. Phys. Dept. /SLAC, SSRL; Nagaosa, N.; /Tokyo U.; Devereaux, T.P.; /Waterloo U.; Hussain, Z.; /LBNL, ALS; Shen, Z.X.; /Stanford U., Appl. Phys. Dept. /SLAC, SSRL

2007-11-21T23:59:59.000Z

329

Particle-Hole Symmetry Breaking in the Pseudogap State of Bi2201  

Science Conference Proceedings (OSTI)

In conventional superconductors, a gap exists in the energy absorption spectrum only below the transition temperature (T{sub c}), corresponding to the energy price to pay for breaking a Cooper pair of electrons. In high-T{sub c} cuprate superconductors above T{sub c}, an energy gap called the pseudogap exists, and is controversially attributed either to pre-formed superconducting pairs, which would exhibit particle-hole symmetry, or to competing phases which would typically break it. Scanning tunnelling microscopy (STM) studies suggest that the pseudogap stems from lattice translational symmetry breaking and is associated with a different characteristic spectrum for adding or removing electrons (particle-hole asymmetry). However, no signature of either spatial or energy symmetry breaking of the pseudogap has previously been observed by angle-resolved photoemission spectroscopy (ARPES). Here we report ARPES data from Bi2201 which reveals both particle-hole symmetry breaking and dramatic spectral broadening indicative of spatial symmetry breaking without long range order, upon crossing through T* into the pseudogap state. This symmetry breaking is found in the dominant region of the momentum space for the pseudogap, around the so-called anti-node near the Brillouin zone boundary. Our finding supports the STM conclusion that the pseudogap state is a broken-symmetry state that is distinct from homogeneous superconductivity.

Hashimoto, M.; /SIMES, Stanford /Stanford U., Geballe Lab. /LBNL, ALS; He, R.-H.; /aff SIMES, Stanford /Stanford U., Geballe Lab.; Tanaka, K.; /aff SIMES, Stanford /Stanford U., Geballe Lab. /LBNL, ALS /Osaka U.; Testaud, J.P.; /SIMES, Stanford /Stanford U., Geballe Lab. /LBNL, ALS; Meevasana1, W.; Moore, R.G.; Lu, D.H.; /SIMES, Stanford /Stanford U., Geballe Lab.; Yao, H.; /SIMES, Stanford; Yoshida, Y.; Eisaki, H.; /AIST, Tsukuba; Devereaux, T.P.; /SIMES, Stanford /Stanford U., Geballe Lab.; Hussain, Z.; /LBNL, ALS; Shen, Z.-X.; /SIMES, Stanford /Stanford U., Geballe Lab.

2011-08-19T23:59:59.000Z

330

First calorimetric determination of heat of extraction of 248Cm in a bi-phasic system  

SciTech Connect

This report presents a summary of the work performed to meet FCR&D level 2 milestone M21SW050201, 'Complete the first calorimetric determination of heat of extraction of 248Cm in a bi-phasic system'. This work was carried out under the auspices of the Thermodynamics and Kinetics FCR&D work package. To complement previous work undertaken under this work package we have extended out heat of extraction studies by di-2-ethyl-hexyl-phosphoric acid to curium. This report also details the heat of extraction of samarium in the same system. This work was performed to not only test the methodology but also to check for consistency with the heats of extraction obtained with those in the prior literature. The heat of extraction for samarium that was obtained in this study was -9.6 kJ mol-1, which is in reasonable agreement with the previously obtained value of -10.9 kJ mol-1. The curium heat of extraction was performed under two sets of conditions and the obtained heats of extraction were in reasonable agreement with each other at -16.0 {+-} 1.1 and -16.8 {+-} 1.5 kJ mol-1.

Leigh R. Martin; Peter R. Zalupski

2011-06-01T23:59:59.000Z

331

Structural studies and optical and electrical properties of novel Gd3+-doped Sb2Se3 nanorods  

Science Conference Proceedings (OSTI)

Gd3+-doped Sb2Se3 nanorods were synthesized by coreduction method at 180C and pH = 12 for 48 h. Powder XRD patterns indicate that the GdxSb2-xSe3 crystals (x ...

Abdolali Alemi; Younes Hanifehpour; Sang Woo Joo; Bong-Ki Min; Tae Hwan Oh

2012-01-01T23:59:59.000Z

332

Investigation of polycrystalline thin film CuInSe{sub 2} solar cells based on ZnSe windows. Annual subcontract report, 15 February, 1993--14 February, 1994  

DOE Green Energy (OSTI)

This report concerns studies of CIS solar cells based on ZnSe window layers. ZnSe/CIS devices are fabricated by growing ZnSe films by MOCVD onto Siemens CIS and graded absorber substrates. ZnSe films are grown by reacting H{sub 2}Se with a zinc adduct. ZnSe/CIS heterojunctions have been studied by depositing transparent aluminum contacts onto ZnSe. These studies indicate that ZnSe/CIS solar cells can be fabricated with an efficiency greater than 14%. Open circuit voltages are typically larger than 500 mV and the optimum range of ZnSe film thickness for maximum efficiency is between 100 {angstrom} and 250 {angstrom}. Photocurrents are significantly reduced as the film thickness exceeds 250 {angstrom}. Photoluminescence spectroscopy has been utilized to characterize the physical nature of CIS substrate surfaces, and ZnSe-CIS interfaces. These studies indicate that a segregated phase(s) exists at the surface of as received Siemens substrates. Additionally, it is determined that the segregated phase(s) still exist after the ZnSe growth process. To date, sputtered ZnO top contact layers have caused degradation of the photovoltaic properties of the ZnSe/CIS structure. Investigations of the effects of MOCVD grown ZnO upon ZnSe/CIS structures will soon be initiated. To establish the feasibility of ZnSe as a window layer, cells have been fabricated by incorporating a protective layer of CdS between the ZnSe and ZnO. A total area efficiency of 11% was obtained with such a structure.

Olsen, L.C. [Washington State Univ., Richland, WA (United States)

1995-03-01T23:59:59.000Z

333

Photoconductivity and luminescence in GaSe crystals at high levels of optical excitation  

Science Conference Proceedings (OSTI)

The photoconductivity and luminescence of GaSe layered crystals at high levels of optical excitation are studied experimentally. The specific features observed in the photoconductivity and photoluminescence spectra are controlled by the nonlinear optical absorption in the region of excitonic resonance.

Kyazym-zade, A. G.; Salmanov, V. M., E-mail: vagif_salmanov@yahoo.com; Salmanova, A. A. [Baku State University (Azerbaijan); Alieva, A. M.; Ibaeva, R. Z. [National Academy of Sciences, Institute of Physics (Azerbaijan)

2010-03-15T23:59:59.000Z

334

Performances of a large mass ZnSe bolometer to search for rare events  

E-Print Network (OSTI)

Scintillating bolometers of ZnSe are the baseline choice of the LUCIFER experiment, whose aim is to observe the neutrinoless double beta decay of 82Se. The independent read-out of the heat and scintillation signals allows to identify and reject alpha particle interactions, the dominant background source for bolometric detectors. In this paper we report the performances of a ZnSe crystal operated within the LUCIFER R&D. We measured the scintillation yield, the energy resolution and the background in the energy region where the signal from neutrinoless double beta decay of 82Se is expected with an exposure of 9.4 kg x days. With a newly developed analysis algorithm we improved the rejection of alpha events, and we estimated the increase in energy resolution obtained by the combination of the heat and light signals. For the first time we measured the light emitted by nuclear recoils, and found it to be compatible with zero. We conclude that the discrimination of nuclear recoils from beta/gamma interactions in the WIMPs energy region is possible, but low-noise light detectors are needed.

J. W. Beeman; F. Bellini; L. Cardani; N. Casali; I. Dafinei; S. Di Domizio; F. Ferroni; L. Gironi; A. Giuliani; S. Nagorny; F. Orio; L. Pattavina; G. Pessina; G. Piperno; S. Pirro; E. Previtali; C. Rusconi; C. Tomei; M. Vignati

2013-03-17T23:59:59.000Z

335

ZnSe nanorods prepared in hydroxide-melts and their application as a humidity sensor  

Science Conference Proceedings (OSTI)

We have synthesized the crystalline ZnSe nanorods for the first time using the molten hydroxides as reaction solvent in the absence of organic dispersant or capping agents. The products are characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. The diameters of ZnSe nanorods are about 200-300 nm, and the lengths are about 1-2 {mu}m. Humidity sensors based on ZnSe nanorods are fabricated and their responsiveness to humidity on static and dynamic testing are investigated. The change of resistance is about three orders of magnitude as the relative humidity increases from 20% to 85%. The response time and recovery time is 50 s and 81 s versus the changes of relative humidity from 20% to 85% and from 85% to 20%, respectively. Our sensor offers higher sensitivity, as well as much better stability and reproducibility than the humidity sensor of ZnSe nanostructure reported before.

Yan Wei [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China); Hu Chenguo, E-mail: hucg@cqu.edu.cn [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China); Xi Yi; Wan Buyong; He Xiaoshan; Zhang Michao; Zhang Yan [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China)

2009-06-03T23:59:59.000Z

336

Entanglement in GaAs and CdSe quantum dots: Exact calculations and DFT approximations  

Science Conference Proceedings (OSTI)

We consider two electrons confined in spherical GaAs and CdSe quantum dots and calculate their ground-state spatial entanglement exactly within a parabolic confinement model. We propose a perturbative scheme to approximate the above entanglement within ... Keywords: Density-functional theory, Entanglement, Quantum dots, Quantum information, Semiconductors

J. P. Coe; A. Sudbery; I. D'Amico

2009-03-01T23:59:59.000Z

337

Photoelectrochemical properties of spray deposited n-CdSe thin films  

SciTech Connect

Polycrystalline cadmium selenide (CdSe) thin films have been prepared by spraying a mixture of an equimolar aqueous solutions of cadmium chloride and selenourea on preheated fluorine doped tin oxide (FTO) coated glass substrates at different substrate temperatures. The cell configuration n-CdSe/1 M (NaOH + Na{sub 2}S + S)/C is used for studying the capacitance-voltage (C-V) characteristics in dark, current-voltage (I-V) characteristics in dark and under illumination, photovoltaic power output and spectral response characteristics of the as deposited films. Photoelectrochemical study shows that as deposited CdSe thin films exhibits n-type of conductivity. The spectral response characteristics of the films at room temperature show a prominent sharp peak at 725 nm. The measured values of efficiency ({eta}) and fill factor (FF) are found to be 0.50% and 0.44 respectively for film deposited at 300 C. Electrochemical impedance spectroscopy studies show that the CdSe film deposited at 300 C shows better performance in PEC cell. (author)

Yadav, A.A.; Barote, M.A.; Masumdar, E.U. [Thin Film Physics Laboratory, Department of Physics, Electronics and Photonics, Rajarshi Shahu Mahavidyalaya, Latur 413512, Maharashtra (India)

2010-05-15T23:59:59.000Z

338

Imaging the charge transport in arrays of CdSe nanocrystals  

E-Print Network (OSTI)

A novel method to image charge is used to measure the diffusion coefficient of electrons in films of CdSe nanocrystals at room temperature. This method makes possible the study of charge transport in films exhibiting high resistances or very small diffusion coefficients.

M. Drndic; R. Markov; M. V. Jarosz; M. G. Bawendi; M. A. Kastner; N. Markovic; M. Tinkham

2003-05-29T23:59:59.000Z

339

WindowsMillenniumEdition (Me) Windows98/98SecondEdition(SE)  

E-Print Network (OSTI)

WindowsMillenniumEdition (Me) Windows98/98SecondEdition(SE) Windows2000Professional WindowsXPHomeEdition WindowsXPProfessional Installation Guide Installing Nikon View 4 and Supporting Software Windows software (such as Cumulus) Mac OS Nikon D1 Nikon D1X Nikon D1H Windows Millennium Edition (Me) Windows 98

Kleinfeld, David

340

Spray Deposition of High Quality CuInSe2 and CdTe Films: Preprint  

DOE Green Energy (OSTI)

A number of different ink and deposition approaches have been used for the deposition of CuInSe2 (CIS), Cu(In,Ga)Se2 (CIGS), and CdTe films. For CIS and CIGS, soluble precursors containing Cu, In, and Ga have been developed and used in two ways to produce CIS films. In the first, In-containing precursor films were sprayed on Mo-coated glass substrates and converted by rapid thermal processing (RTP) to In2Se3. Then a Cu-containing film was sprayed down on top of the In2Se3 and the stacked films were again thermally processed to give CIS. In the second approach, the Cu-, In-, and Ga-containing inks were combined in the proper ratio to produce a mixed Cu-In-Ga ink that was sprayed on substrates and thermally processed to give CIGS films directly. For CdTe deposition, ink consisting of CdTe nanoparticles dispersed in methanol was prepared and used to spray precursor films. Annealing these precursor films in the presence of CdCl2 produced large-grained CdTe films. The films were characterized by x-ray diffraction (XRD) and scanning electron microscopy (SEM). Optimized spray and processing conditions are crucial to obtain dense, crystalline films.

Curtis, C. J.; van Hest, M.; Miedaner, A.; Leisch, J.; Hersh, P.; Nekuda, J.; Ginley, D. S.

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

A n n u A l Campus seCurity And  

E-Print Network (OSTI)

A n n u A l Campus seCurity And Fire saFety report 2012 #12;Dear UC Santa Cruz Community, UC Santa are primarily responsible for ensuring the safety and security of the UC Santa Cruz community from all hazards in the responsibility of keeping our community safe. As such, we encourage you to read our Annual Campus Security

California at Santa Cruz, University of

342

Charging effects in CdSe nanocrystals embedded in SiO2 matrix produced by rf magnetron sputtering  

Science Conference Proceedings (OSTI)

Charging effects in CdSe nanocrystals embedded in SiO"2 matrix fabricated by rf magnetron co-sputtering technique were electrically characterized by means of capacitance-voltage (C-V) combined with current-voltage (I-V). The presence of CdSe nanocrystals ... Keywords: CdSe, Charging effect, Nanocrystals, SiO2

S. Levichev; A. Chahboun; P. Basa; A. G. Rolo; N. P. Barradas; E. Alves; Zs. J. Horvath; O. Conde; M. J. M. Gomes

2008-12-01T23:59:59.000Z

343

Single-peak excitonic emission of CdSe ultra-thin quantum wells finished with fractional monolayers  

Science Conference Proceedings (OSTI)

Ultra-thin quantum wells (UTQWs) of CdSe grown by atomic layer epitaxy (ALE) present very interesting features, such as intense excitonic luminescence and relatively narrow width. Grown under adequate conditions only a single excitonic peak is exhibited ... Keywords: Atomic layer epitaxy (ALE), CdSe, Excitons, II-VI semiconductors, Interface, Photoluminiscence, Ultra-thin quantum wells, ZnSe

Adrin Alfaro-Martnez; Isaac Hernndez-Caldern

2008-03-01T23:59:59.000Z

344

Seeded Growth of Highly Luminescent CdSe/CdS Nano-Heterostructures with Rod and Tetrapod Morphologies  

E-Print Network (OSTI)

image of a central part of CdSe/CdS nano-tetrapod showingof toluene solutions of CdSe/CdS nano-tetrapods with 50 nmlong arms grown from 3.6 nm zb-CdSe seeds. Gray line shows

Talapin, Dmitri

2008-01-01T23:59:59.000Z

345

Nanofabrication, Plasmon Enhanced Fluorescence and Photo-oxidation Kinetics of CdSe Nanoparticles  

E-Print Network (OSTI)

Unconventional nanofabrication techniques; both those which have been newly developed and those under development, had brought inexpensive, facile, yet high quality means to fabricate nanostructures that have feature sizes of less than 100 nm in industry and academia. This dissertation focuses on developing unconventional fabrication techniques, building studying platforms, and studying the mechanisms behind them. The studies are divided into two main facets and four chapters. The first facet, in Chapter II and Chapter III, deals with the research and development of different nanofabrication techniques and nanostructures. These techniques include litho-synthesis, colloidal lithography, and photolithography. The nanostructures that were fabricated by these techniques include the metal nanoparticle arrays, and the self-assembled CdSe nanoring arrays. At the same time, the dissertation provides mechanisms and models to describe the physical and chemical nature of these techniques. The second area of this study, in Chapter III to Chapter V, presents the applications of these nanostructures in fundamental studies, i.e. the mechanisms of plasmon enhanced fluorescence and photo-oxidation kinetics of CdSe quantum dots, and applications such as molecular sensing and material fabrication. More specifically, these applications include tuning the optical properties of CdSe quantum dots, biomodification of CdSe quantum dots, and copper ion detection using plasmon and photo enhanced CdSe quantum dots. We have successfully accomplished our research goals in this dissertation. Firstly, we were able to tune the emission wavelength of quantum dots, blue-shifted for up to 45 nm, and their surface functionalization with photo-oxidation. A kinetic model to calculate the photo-oxidation rates was established. Secondly, we established a simple mathematical model to explain the mechanism of plasmon enhanced fluoresce of quantum dots. Our calculation and experimental data support the fluorescence resonance energy transfer (FRET) mechanism between quantum dots and the metal nanoparticles. Thirdly, we successfully pattered the CdSe quantum dots (diameter ~4 nm) into nanorings with tunable diameters and annular sizes on different substrates. We also established a physical model to quantitatively explain the mechanism with the forces that involved in the formation of the nanorings.

Chen, Jixin

2010-05-01T23:59:59.000Z

346

Enhanced quality thin film Cu(In,Ga)Se.sub.2 for semiconductor device applications by vapor-phase recrystallization  

DOE Patents (OSTI)

Enhanced quality thin films of Cu.sub.w (In,Ga.sub.y)Se.sub.z for semiconductor device applications are fabricated by initially forming a Cu-rich, phase-separated compound mixture comprising Cu(In,Ga):Cu.sub.x Se on a substrate to form a large-grain precursor and then converting the excess Cu.sub.x Se to Cu(In,Ga)Se.sub.2 by exposing it to an activity of In and/or Ga, either in vapor In and/or Ga form or in solid (In,Ga).sub.y Se.sub.z. Alternatively, the conversion can be made by sequential deposition of In and/or Ga and Se onto the phase-separated precursor. The conversion process is preferably performed in the temperature range of about 300.degree.-600.degree. C., where the Cu(In,Ga)Se.sub.2 remains solid, while the excess Cu.sub.x Se is in a liquid flux. The characteristic of the resulting Cu.sub.w (In,Ga).sub.y Se.sub.z can be controlled by the temperature. Higher temperatures, such as 500.degree.-600.degree. C., result in a nearly stoichiometric Cu(In,Ga)Se.sub.2, whereas lower temperatures, such as 300.degree.-400.degree. C., result in a more Cu-poor compound, such as the Cu.sub.z (In,Ga).sub.4 Se.sub.7 phase.

Tuttle, John R. (Denver, CO); Contreras, Miguel A. (Golden, CO); Noufi, Rommel (Golden, CO); Albin, David S. (Denver, CO)

1994-01-01T23:59:59.000Z

347

Effects of Pb and Bi cross sections on ATW subcriticality predictions.  

SciTech Connect

The accelerator-driven transmutation of waste (ATW) system has been proposed for transmuting the long-lived radioactive nuclei of high-level waste to stable or short-lived species. In recent ATW design concepts, lead-bismuth eutectic (LBE), consisting of 44.5% Pb and 55.5% Bi by weight is used as the spallation target, system coolant, and reflector. Because of the excellent neutron reflection properties of LBE, the subcriticality level of ATW is quite sensitive to the cross sections of lead and bismuth. The purpose of this paper is to investigate the effects of these cross sections on subcriticality and other core characteristics of ATW and to compare the results obtained using cross sections in different evaluated nuclear data files. The effects of lead and bismuth cross sections on the core characteristics of ATW were studied using 33 group cross section sets derived from the ENDF/B-VI, ENDF/B-V, JENDL-3.2, and BROND-2.2 nuclear data. A 2000 MW(thermal) ATW configuration similar to that described in Reference 1 was used in this study. In this configuration, the spallation target region is 55 cm high and 25 cm in radius, and is surrounded by a 15-cm thick LBE buffer. The adjacent fueled region is {approximately}65 cm thick and 200 cm high. The volume fractions of fuel, coolant, and structure are 25.7%, 59.3%, and 15%, respectively. The metal alloy fuel is composed of roughly 70% zirconium, 25% transuranics (TRU), and 5% Tc-99 by weight. A thick LBE reflector surrounds the whole core; its axial thickness is 250 cm, and its radial thickness is 295.2 cm.

Khalil, H. S.; Yang, W. S.

1999-06-25T23:59:59.000Z

348

AeroSys: Noncompliance Determination (2010-CE-01/0201 and 2010-SE-0302) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

AeroSys: Noncompliance Determination (2010-CE-01/0201 and AeroSys: Noncompliance Determination (2010-CE-01/0201 and 2010-SE-0302) AeroSys: Noncompliance Determination (2010-CE-01/0201 and 2010-SE-0302) September 27, 2011 DOE issued a Notice of Noncompliance Determination to AeroSys, Inc. finding that basic models THDC-18S, THDC-18T, THDC-24S, and THDC-24T do not comport with the energy conservation standards. DOE determined the products were noncompliant based on DOE testing. AeroSys must immediately notify each person (or company) to whom AeroSys distributed the noncompliant products that the products do not meet Federal standards. In addition, AeroSys must provide to DOE documents and records showing the number of units AeroSys distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

349

Optical transitions in MnGa{sub 2}Se{sub 4}  

Science Conference Proceedings (OSTI)

The dependence of the absorption coefficient on incident photon energy in a MnGa{sub 2}Se{sub 4} single crystal has been investigated in the temperature range 110-295 K. Using group-theory analysis of the electron state symmetry and comparison of the symmetry of the energy spectrum of MnGa{sub 2}Se{sub 4} and its isoelectronic analogs, a conclusion about the character of optical transitions has been drawn. It is shown that the features observed at 2.31 and 2.45 eV are related to the intracenter transitions {sup 6}A{sub 1}{sup 1} {yields} {sup 4}T{sub 2}({sup 4}G) and {sup 6}A{sub 1}{sup 2} {yields} {sup 4}T{sub 2}({sup 4}G). The {sup 6}A{sub 1} state is split by the crystal field.

Tagiev, B. G.; Kerimova, T. G., E-mail: ktaira@physics.ab.az; Tagiev, O. B.; Asadullayeva, S. G.; Mamedova, I. A. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2012-06-15T23:59:59.000Z

350

Low-cost CuInSe[sub 2] submodule development  

DOE Green Energy (OSTI)

Aim of this project is development and demonstration of processing steps necessary for fabrication of high efficiency CuInSe[sub 2] solar cells and sub-modules by the two-stage technique (also called the selenization method.) During this period, we have optimized the processing parameters of this method and demonstrated CuInSe[sub 2]/CdS/ZnO devices with a 1[endash]4 cm[sup 2] area and up to 12.4% active area efficiency. We have also developed a novel approach for the preparation of Cu/In precursors that improved the stoichiometric and morphological uniformity in these films. We have developed processing steps and tooling for handling up to 1 ft[sup 2] size substrates and as a result of these efforts demonstrated our first monolithically integrated sub-module of 1 ft[sup 2] area. 16 figs, 1 tab, 15 refs.

Basol, B.M.; Kapur, V.K.; Halani, A.; Leidholm, C. (International Solar Electric Technology, Inglewood, CA (United States))

1992-10-01T23:59:59.000Z

351

Numerical Simulation of Annealing of CdSe Quantum Dots for White Light LEDs  

Science Conference Proceedings (OSTI)

The pulsed thermal processing (PTP) of CdSe Quantum Dots (QD) using a High Density plasma arc lamp. The single layer of CdSe QD was deposited on sapphire and was encapsulated in an alumina matrix. A computational methodology is proposed to understand the energy transport and annealing of QD material for solid-state lighting applications. It was found that the energy balance in the system was affected by the QD. The QD monolayer of spheres was found to alter the total reflectivity, even though the energy absorbed in QD was relatively small. The numerical simulations can be an effective tool to predict the narrow range of processing parameters and dramatically reduce expensive trial-and-error procedures while enabling the enhanced properties of nanostructured materials to be realized.

Sabau, Adrian S [ORNL; Duty, Chad E [ORNL; Ott, Ronald D [ORNL; Jellison Jr, Gerald Earle [ORNL

2008-01-01T23:59:59.000Z

352

Photoluminescence studies of type-II CdSe/CdTe superlattices  

SciTech Connect

CdSe/CdTe type-II superlattices grown on GaSb substrates by molecular beam epitaxy are studied using time-resolved and steady-state photoluminescence (PL) spectroscopy at 10 K. The relatively long carrier lifetime of 188 ns observed in time-resolved PL measurements shows good material quality. The steady-state PL peak position exhibits a blue shift with increasing excess carrier concentration. Self-consistent solutions of the Schroedinger and Poisson equations show that this effect can be explained by band bending as a result of the spatial separation of electrons and holes, which is critical confirmation of a strong type-II band edge alignment between CdSe and CdTe.

Li Jingjing; Johnson, Shane R.; Wang Shumin; Ding Ding; Ning Cunzheng; Zhang Yonghang [Center for Photonics Innovation, Arizona State University, Tempe, Arizona 85287-5706 (United States); School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287-5706 (United States); Yin Leijun [Center for Photonics Innovation, Arizona State University, Tempe, Arizona 85287-5706 (United States); Department of Physics, Arizona State University, Tempe, Arizona 85287-1504 (United States); Skromme, B. J. [School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287-5706 (United States); Liu Xinyu; Furdyna, Jacek K. [Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

2012-08-06T23:59:59.000Z

353

Distribution of CdSe nanoparticles synthesized in porous SiO{sub x} matrix  

Science Conference Proceedings (OSTI)

Photoluminescence spectra of CdSe nanoparticles synthesized by the chemical method from an aqueous solution are studied in relation to nanoparticle location over depth in the porous SiO{sub x} layer consisting of a set of distinct SiO{sub x} columns {approx}(10-100) nm in diameter. An analysis of radiative characteristics of this structure shows that the distributions of different-size nanoparticle fractions over the nanocomposite layer depth are different. A model explaining the cause of such distributions is considered. Within this model the parameter defining the 'constrained geometry' notion for the used conditions of CdSe nanoparticles' growth in the SiO{sub x} matrix is estimated.

Bacherikov, Yu. Yu., E-mail: yuyu@isp.kiev.ua; Indutnyi, I. Z.; Okhrimenko, O. B.; Optasyuk, S. V.; Shepeliavyi, P. E.; Ponamarenko, V. V. [National Academy of Sciences, Lashkaryov Institute of Semiconductor Physics (Ukraine)

2011-09-15T23:59:59.000Z

354

Junction Formation in CuInSe{sub 2} Based Thin Film Devices  

DOE Green Energy (OSTI)

The nature of the interface between CuInSe{sub 2} (CIS) and the chemical bath deposited CdS layer has been investigated. We show that heat-treating the absorbers in Cd- or Zn-containing solutions in the presence of ammonium hydroxide sets up a chemical reaction which facilitates an extraction of Cu from the lattice and an in-diffusion of Cd. The characteristics of devices made in this manner suggest that the reaction generates a thin, n-doped region in the absorber. It is quite possible that the CdS/CuInSe{sub 2} device is a buried, shallow junction with a CdS window layer, rather than a heterojunction. We have used these ideas to develop methods for fabricating devices without CdS or Cd. A 14.2% efficiency ZnO/CIGS device was obtained through aqueous treatment in Zn solutions.

Ramanathan, K.; Wiesner, H.; Asher, S.; Bhattacharya, R. N.; Keane, J.; Contreras, M.; Noufi, R.

1998-11-18T23:59:59.000Z

355

Quantum-confinement versus strain effects in the Zn(Cd)S(Se) family of superlattices  

Science Conference Proceedings (OSTI)

We have investigated the quantum-confinement (QC) and strain effects on the band structures of the Zn(Cd)S(Se) family of binary-compound superlattices (SLs); particularly those with common anions and with common cations. All the studied cases of SLs ... Keywords: 71.20.Nr, 71.55.Gs, 73.21.Fg, 73.61.Ga, II-VI semiconductors, Semiconductor compounds, Superlattices

Ihab M. Obaidat; Nacir Tit

2009-03-01T23:59:59.000Z

356

Novel thin-film CuInSe sub 2 fabrication  

DOE Green Energy (OSTI)

This report describes research in Rapid Thermal Processing (RTP), a process that allows the formation of CuInSe{sub 2} without the use of H{sub 2}Se. RTP is a well-established method of rapidly achieving temperatures necessary to melt and recrystallize materials such as Si and and silicides. RTP processes can rapidly and uniformly heat large surface areas to hundreds of degrees Celsius. RTP is the most promising method of rapid recrystallization studied to date, being readily scalable from the research to the production level. The approach to the experiment was divided into two sections: (1) fabricating the precursor film and (2) processing the precursor film. The objective of the first phase of the work was to fabricate the thin films by RTP, then fully characterize them, to demonstrate the viability of the process as a method by which to make device-quality CuInSe{sub 2}. The second phase was to demonstrate that material made by this method could be used to make an active photovoltaic device. 24 refs.

Mooney, G.D.; Hermann, A.M. (Colorado Univ., Boulder, CO (United States))

1992-03-01T23:59:59.000Z

357

Photoinduced Surface Oxidation and Its Effect on the Exciton Dynamics of CdSe Quantum Dots  

DOE Green Energy (OSTI)

With increased interest in semiconductor nanoparticles for use in quantum dot solar cells there comes a need to understand the long-term photostability of such materials. Colloidal CdSe quantum dots (QDs) were suspended in toluene and stored in combinations of light/dark and N{sub 2}/O{sub 2} to simulate four possible benchtop storage environments. CdSe QDs stored in a dark, oxygen-free environment were observed to better retain their optical properties over the course of 90 days. The excited state lifetimes, determined through femtosecond transient absorption spectroscopy, of air-equilibrated samples exposed to light exhibit a decrease in average lifetime (0.81 ns) when compared to samples stored in a nitrogen/dark environment (8.3 ns). A photoetching technique commonly used for controlled reduction of QD size was found to induce energetic trap states to CdSe QDs and accelerate the rate of electron-hole recombination. X-ray absorption near edge structure (XANES) analysis confirms surface oxidation, the extent of which is shown to be dependent on the thickness of the ligand shell.

Hines, Douglas A.; Becker, Matthew A.; Kamat, Prashant V. (Notre)

2012-11-14T23:59:59.000Z

358

Experimental Cross Sections for Reactions of Heavy Ions and 208Pb, 209Bi, 238U, and 248Cm Targets  

Science Conference Proceedings (OSTI)

The study of the reactions between heavy ions and {sup 208}Pb, {sup 209}Bi, {sup 238}U, and {sup 248} Cm targets was performed to look at the differences between the cross sections of hot and cold fusion reactions. Experimental cross sections were compared with predictions from statistical computer codes to evaluate the effectiveness of the computer code in predicting production cross sections. Hot fusion reactions were studied with the MG system, catcher foil techniques and the Berkeley Gas-filled Separator (BGS). 3n- and 4n-exit channel production cross sections were obtained for the {sup 238}U({sup 18}O,xn){sup 256-x}Fm, {sup 238}U({sup 22}Ne,xn){sup 260-x}No, and {sup 248}Cm({sup 15}N,xn){sup 263-x}Lr reactions and are similar to previous experimental results. The experimental cross sections were accurately modeled by the predictions of the HIVAP code using the Reisdorf and Schaedel parameters and are consistent with the existing systematics of 4n exit channel reaction products. Cold fusion reactions were examined using the BGS. The {sup 208}Pb({sup 48}Ca,xn){sup 256-x}No, {sup 208}Pb({sup 50}Ti,xn){sup 258-x}Rf, {sup 208}Pb({sup 51}V,xn){sup 259-x}Db, {sup 209}Bi({sup 50}Ti,xn){sup 259-x}Db, and {sup 209}Bi({sup 51}V,xn){sup 260-x}Sg reactions were studied. The experimental production cross sections are in agreement with the results observed in previous experiments. It was necessary to slightly alter the Reisdorf and Schaedel parameters for use in the HIVAP code in order to more accurately model the experimental data. The cold fusion experimental results are in agreement with current 1n- and 2n-exit channel systematics.

Patin, Joshua B.

2002-05-24T23:59:59.000Z

359

N-type thermoelectric recycled carbon fibre sheet with electrochemically deposited Bi{sub 2}Te{sub 3}  

SciTech Connect

An N-type thermoelectric recycled carbon fibre sheet with bismuth telluride coating has been successfully synthesised through an electro-deposition technique. The Seebeck coefficient and electrical properties of the combined recycled carbon fibre sheet and bismuth telluride films are reported. Classification of the crystal structure, surface morphology and the elemental composition of the resulting deposits are methodically characterised by XRD, SEM and EDX. Cyclic voltammetry is also carried out in nitric acid solutions to investigate the right range of deposition potential. The synthesis N-type thermoelectric sheet has a highest attainable Seebeck coefficient of -54 {mu}V K{sup -1} and an electrical resistivity of 8.9 Multiplication-Sign 10{sup -5} Ohm-Sign m. The results show slight differences in morphologies and thermoelectric properties for the films deposited at varying deposition potential. The increase in thermoelectrical properties of the recycled carbon fibre is in line with the development of using coated recycled fibre for thermoelectrical applications. - Graphical abstract: SEM image of an N-type thermoelectric recycled carbon fibre sheet with Bi{sub 2}Te{sub 3} coatings. Highlights: Black-Right-Pointing-Pointer N-type thermoelectric sheet is synthesis through the electrodeposition of Bi{sub 2}Te{sub 3}. Black-Right-Pointing-Pointer Bi{sub 2}Te{sub 3} composition can be controlled by varying the deposition voltage. Black-Right-Pointing-Pointer Seebeck coefficient and electrical properties of the combined sheet were reported. Black-Right-Pointing-Pointer Material characterisations of the deposits are done using XRD, SEM and EDX.

Pang, E.J.X. [Division of Materials, Mechanics and Structures, The University of Nottingham, University Park, Nottingham, NG7 2RD (United Kingdom)] [Division of Materials, Mechanics and Structures, The University of Nottingham, University Park, Nottingham, NG7 2RD (United Kingdom); Pickering, S.J., E-mail: stephen.pickering@nottingham.ac.uk [Division of Materials, Mechanics and Structures, The University of Nottingham, University Park, Nottingham, NG7 2RD (United Kingdom); Chan, A. [Division of Materials, Mechanics and Structures, The University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan (Malaysia)] [Division of Materials, Mechanics and Structures, The University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan (Malaysia); Wong, K.H. [Division of Materials, Mechanics and Structures, The University of Nottingham, University Park, Nottingham, NG7 2RD (United Kingdom)] [Division of Materials, Mechanics and Structures, The University of Nottingham, University Park, Nottingham, NG7 2RD (United Kingdom); Lau, P.L. [Division of Materials, Mechanics and Structures, The University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan (Malaysia)] [Division of Materials, Mechanics and Structures, The University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan (Malaysia)

2012-09-15T23:59:59.000Z

360

Tb0.5Bi0.5MnO3: New material. A DFT study  

Science Conference Proceedings (OSTI)

In the present work we have determined the band structure and the densities of states (DOS) of Tb0.5Bi0.5MnO3 in cubic phase using the density functional theory (DFT). The determination of the lattice constant was ... Keywords: 61.50.-f, 62.20.-x, 71.15.Nc, 71.20.-b, 71.55.Ht, 75.20.En, Band structure, DFT, Density of states, Magnetic properties, Mechanical and structural properties, Tb1-xBixMnO3

Miguel Grizalez; M. Jairo Arbey Rodrguez; Jess Heiras; P. Prieto

2008-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

The microstructure network and thermoelectric properties of bulk (Bi,Sb){sub 2}Te{sub 3}  

Science Conference Proceedings (OSTI)

We report small-angle neutron scattering studies on the microstructure network in bulk (Bi,Sb){sub 2}Te{sub 3} synthesized by the melt-spinning (MS) and the spark-plasma-sintering (SPS) process. We find that rough interfaces of multiscale microstructures generated by the MS are responsible for the large reduction of both lattice thermal conductivity and electrical conductivity. Our study also finds that subsequent SPS forms a microstructure network of {approx}10 nm thick lamellae and smooth interfaces between them. This nanoscale microstructure network with smooth interfaces increases electrical conductivity while keeping a low thermal conductivity, making it an ideal microstructure for high thermoelectric efficiency.

Xie Wenjie [Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634 (United States); State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China); Hitchcock, Dale A.; Kang, Hye J.; He Jian [Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634 (United States); Tang Xinfeng [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China); Laver, Mark [Department of Physics, Technical University of Denmark, DK-2800 Kgs. Lyngby (Denmark); Nano-Science Center, Niels Bohr Institute, University of Copenhagen, DK-2100 Kobenhavn (Denmark); Laboratory for Neutron Scattering, Paul Scherrer Institut, CH-5232 Villigen PSI (Switzerland); Hammouda, Boualem [NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)

2012-09-10T23:59:59.000Z

362

Technical evaluation and assessment of CNG/LPG bi-fuel and flex-fuel vehicle viability  

DOE Green Energy (OSTI)

This report compares vehicles using compressed natural gas (CNG), liquefied petroleum gas (LPG), and combinations of the two in bi-fuel or flex-fuel configurations. Evidence shows that environmental and energy advantages can be gained by replacing two-fuel CNG/gasoline vehicles with two-fuel or flex-fuel systems to be economically competitive, it is necessary to develop a universal CNG/LPG pressure-regulator-injector and engine control module to switch from one tank to the other. For flex-fuel CNG/LPG designs, appropriate composition sensors, refueling pumps, fuel tanks, and vaporizers are necessary.

Sinor, J E [Sinor (J.E.) Consultants, Inc., Niwot, CO (United States)

1994-05-01T23:59:59.000Z

363

Large-scale controllable synthesis of dumbbell-like BiVO{sub 4} photocatalysts with enhanced visible-light photocatalytic activity  

SciTech Connect

The controllable synthesis of novel dumbbell-like BiVO{sub 4} hierarchical nanostructures has been successfully obtained via a simple hydrothermal route. The as-synthesized products were studied by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy and UV-vis absorption spectroscopy. The results showed that the nucleation and growth of the nanodumbbells were governed by an oriented aggregation growth mechanism. It is noteworthy that the concentration of poly(vinyl pyrrolidone) and the volume ratio of H{sub 2}O to CH{sub 3}COOH were crucial to the growth of the final nanoarchitectures. Control experiments were also carried out to investigate the factors which impact on the morphology of the products. Furthermore, the as-prepared BiVO{sub 4} hierarchical nanostructures demonstrated the superior visible-light-driven photocatalytic efficiency, which is helpful for the separation and recycle considering their promising applications in harmful pollutants disposal. - Graphical Abstract: The controllable synthesis of novel dumbbell-like BiVO{sub 4} hierarchical nanostructures has been successfully obtained via a simple hydrothermal route; the as-prepared BiVO{sub 4} hierarchical nanostructures demonstrated the superior visible-light-driven photocatalytic efficiency. Highlights: Black-Right-Pointing-Pointer Dumbbell-like BiVO{sub 4} structures were synthesized and characterized for the first time. Black-Right-Pointing-Pointer The volume ratios of H{sub 2}O to CH{sub 3}COOH were crucial to the final morphologies. Black-Right-Pointing-Pointer Their photocatalytic activity was up to 90% under visible-light irradiation. Black-Right-Pointing-Pointer Dumbbell-like BiVO{sub 4} structures may utilize the pollutant disposal.

Lu Yang [Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000 (China); Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); Luo Yongsong, E-mail: ysluo@mail.ipc.ac.cn [Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000 (China); Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); Kong Dezhi; Zhang Deyang; Jia Yonglei; Zhang Xinwei [Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000 (China)

2012-02-15T23:59:59.000Z

364

Electrodeposition of ultrathin Pd, Co and Bi films on well-defined noble-metal electrodes: studies by ultrahigh vacuum-electrochemistry (UHV-EC)  

E-Print Network (OSTI)

Three illustrative cases involving the electrodeposition of ultrathin metal films of varying reactivities onto noble-metal substrates were investigated: (i) Pd on Pt(111), a noble admetal on a noble-metal surface; (ii) Bi on Pd(111), a less noble admetal on a noble-metal surface; and (iii) Co on polycrystalline Pd and Pd(111), a reactive metal on a noble-metal surface. The interfacial electrochemistry of these prototypical systems was characterized using a combination of electrochemical methods (voltammetry and coulometry) and ultrahigh vacuum electron spectroscopies (Auger electron spectroscopy, AES; low energy electron diffraction, LEED; and X-ray photoelectron spectroscopy, XPS). Potential-controlled adsorption-desorption cycles of aqueous bromide exerted surface smoothening effects on ultrathin Pd films with defect sites (steps). This procedure, dubbed as electrochemical (EC) annealing, constituted a nonthermal analogue to conventional annealing. EC-annealed ultrathin Pd films exhibited long-range surface order and remained free of oxygen adspecies. Pdadatoms occupying step-sites were selectively dissolved and/or rearranged to assume equilibrium positions in a well-ordered (1x1) film. Electrodeposition of Co was found to be highly surface-structuresensitive. While virtually no Co electrodeposition transpired on a clean Pd(111) surface, Co was voltammetrically deposited on (i) a Pd(111) electrode roughened by oxidation-reduction cycles; and (ii) thermally annealed polycrystalline Pd, which is a composite of the (111) and (100) facets. Electrodeposition of Co was also observed to be kinetically hindered and slow potential scan rates (0.1 mV/s) were required. Well-defined ultrathin Bi films were potentiostatically electrodeposited onto Pd(111); a Stranski-Krastanov growth mode was indicated. The electrochemical reactivity of ultrathin Bi films was characterized using two surface probes: aqueous iodide and D-glucose. (i) Exposure of the prepared Bi adlayers (??Bi 0.33) to aqueous iodide gave rise to (â??3xâ??7) I-on-Bi superlattice. The same superlattice was obtained if Bi was electrodeposited onto Pd(111)(â??3xâ??3)R30o-I. (ii) With respect to electrooxidation of D-glucose on Pd(111), the presence of Bi adlayers inhibited the by-product-induced "surface poisoning" of Pd(111) but reduced its electrocatalytic efficiency.

Baricuatro, Jack Hess L

2006-08-01T23:59:59.000Z

365

Investigation of polycrystalline thin-film CuInSe{sub 2} solar cells based on ZnSe windows. Annual subcontract report, 15 Febraury 1992--14 February 1993  

DOE Green Energy (OSTI)

Investigations of ZnSe/CIS solar cells are being carried out in an effort to improve the efficiencies CIS cells and to determine if ZnSe is a viable alternative to CdS as a window material. MOCVD growth of ZnSe is accomplished in a SPIRE 500XT reactor housed in the Electronic Materials Laboratory at WSU Tri-Cities by reacting a zinc adduct with H{sub 2}Se. Conductive n-type ZnSe is grown by using iodine as a dopant. Ethyliodide was mixed with helium and installed on one of the gas lines to the system. ZnSe films have been grown on CIS substrates at 200{degrees}C to 250{degrees}C. ZnO is also being deposited by MOCVD by reacting tetrahydrofuran (THF) with a zinc adduct. ZnSe/CIS heterojunctions have been studied by growing n-ZnSe films onto 2 cm x 2 cm CIS substrates diced from materials supplied by Siemens and then depositing an array of aluminum circular areas 2.8.mm in diameter on top of the ZnSe to serve as contacts. Al films are deposited with a thickness of 80 to l00 {angstrom}so that light can pass through the film, thus allowing the illuminated characteristics of the ZnSe/CIS junction to be tested. Accounting for the 20 to 25 % transmittance through the Al film into the ZnSe/CIS structure, current devices have estimated, active-area AM1.5 efficiencies of 14 %. Open circuit voltages > 500 mV are often attained.

Olsen, L C [Washington State Univ. at Tri-Cities, Richland, WA (United States)

1994-05-01T23:59:59.000Z

366

Resistance, magnetic susceptibility in (T, Nb)Nb2Se10 Institut fr Festkrperphysik, Technische Universitt, A-8010 Graz, Austria  

E-Print Network (OSTI)

Eurochemie B.V., and Se 99.999 % Koch-Light Laboratories Ltd) which were sealed in high evacuated quartz

Paris-Sud XI, Université de

367

East Building, PHH-30 U.S. Department 1200 New Jersey Avenue, S.E.  

NLE Websites -- All DOE Office Websites (Extended Search)

East Building, PHH-30 East Building, PHH-30 U.S. Department 1200 New Jersey Avenue, S.E. of Transportation Washington, D.C. 20590 Pipeline and Hazardous Materials Safety Administration Tracking Number: 2008110380 April 30, 2009 To Active Grantees of Special Permit 13133: Based on the Pipeline and Hazardous Materials Safety Administration's editorial review initiated on December 4, 2008, certain special permits were amended by updating regulatory citations when necessary, making needed editorial corrections and by inserting language to indicate that the current revision of the special permit supersedes previous revisions. If you have questions concerning these changes, feel free to contact

368

ScanningTunneling Luminescence of Grain Boundaries in Cu(In,Ga)Se2  

DOE Green Energy (OSTI)

At the Laboratory, photon emission in semiconductors has been mapped in the nanoscale using scanning tunneling microscopy (STM). In this Solar Program Review Meeting, we report on the latest results obtained in Cu(In,Ga)Se2 (CIGS) thin films by this adapted STM. Scanning tunneling luminescence (STL) spectroscopy suggests that photons are emitted near the surface of CIGS. STL is excited either by (1) diffusion of tunneling electrons and subsequent recombination with available holes in CIGS or (2) impact ionization by hot electrons. Which process becomes predominant depends on the voltage applied to the STM tip. Photon mapping shows electronically active, extended defects near the surface of CIGS thin films.

Romero, M. J.; Jiang, C.-S.; Al-Jassim, M. M.; Noufi, R.

2005-01-01T23:59:59.000Z

369

Research on polycrystalline thin film submodules based on CuInSe sub 2 materials  

DOE Green Energy (OSTI)

This report describes progress during the first year of a three-year research program to develop 12%-efficient CuInSe{sub 2} (CIS) submodules with area greater than 900 cm{sup 2}. To meet this objective, the program was divided into five tasks: (1) windows, contacts, substrates; (2) absorber material; (3) device structure; (4) submodule design and encapsulation; and (5) process optimization. In the first year of the program, work was concentrated on the first three tasks with an objective to demonstrate a 9%-efficient CIS solar cell. 7 refs.

Catalano, A.; Arya, R.; Carr, L.; Fieselmann, B.; Lommasson, T.; Podlesny, R.; Russell, L.; Skibo, S.; Rothwarf, A.; Birkmire, R. (Solarex Corp., Newtown, PA (United States))

1992-05-01T23:59:59.000Z

370

Determination of the Exciton Binding Energy in CdSe Quantum Dots  

Science Conference Proceedings (OSTI)

The exciton binding energy (EBE) in CdSe quantum dots (QDs) has been determined using x-ray spectroscopy. Using x-ray absorption and photoemission spectroscopy, the conduction band (CB) and valence band (VB) edge shifts as a function of particle size have been determined and combined to obtain the true band gap of the QDs (i.e. without and exciton). These values can be compared to the excitonic gap obtained using optical spectroscopy to determine the EBE. The experimental EBE results are compared with theoretical calculations on the EBE and show excellent agreement.

Meulenberg, R; Lee, J; Wolcott, A; Zhang, J; Terminello, L; van Buuren, T

2009-10-27T23:59:59.000Z

371

Role of polycrystallinity in CdTe and CuInSe[sub 2] photovoltaic cells  

DOE Green Energy (OSTI)

The limiting role of polycrystallinity in thin-film solar calls has been reduced somewhat during the past year, and efficiencies of both CdTe and CuInSe[sub 2] cells are approaching 15%. Quantitative separation of loss mechanisms shows that individual losses, with the exception of forward recombination current, can be made comparable to their single crystal counterparts. One general manifestation of the extraneous trapping states in that the voltage of all polycrystalline thin-film cells drifts upward by 10--50 mV following the onset of illumination.

Sites, J.R. (Colorado State Univ., Fort Collins, CO (United States))

1992-11-01T23:59:59.000Z

372

Testing the Itinerancy of Spin Dynamics in Superconducting Bi2Sr2CaCu2O8C+?  

SciTech Connect

Much of what we know about the electronic states of high-temperature superconductors is due to photoemission and scanning tunnelling spectroscopy studies of the compound Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}. The demonstration of well-defined quasiparticles in the superconducting state has encouraged many theorists to apply the conventional theory of metals, Fermi-liquid theory, to the cuprates. In particular, the spin excitations observed by neutron scattering at energies below twice the superconducting gap energy are commonly believed to correspond to an excitonic state involving itinerant electrons. Here, we present the first measurements of the magnetic spectral weight of optimally doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} in absolute units. The lack of temperature dependence of the local spin susceptibility across the superconducting transition temperature, T{sub c}, is incompatible with the itinerant calculations. Alternatively, the magnetic excitations could be due to local moments, as the magnetic spectrum is similar to that in La{sub 1.875}Ba{sub 0.125}CuO{sub 4}, where quasiparticles and local moments coexist.

Xu, G.; Gu, G.D.; Hcker, M.; Fauqu, B.; Perring, T.G.; Regnault, L.P.; Tranquada, J.M.

2009-09-01T23:59:59.000Z

373

NMR Study in the Iron-Selenide Rb0:74Fe1:6Se2: Determination of the Superconducting Phase as Iron Vacancy-Free Rb0:3Fe2Se2  

E-Print Network (OSTI)

NMR Study in the Iron-Selenide Rb0:74Fe1:6Se2: Determination of the Superconducting Phase as Iron magnetic resonance (NMR) experiments on Rb0:74Fe1:6Se2 reveal clearly distinct spectra originating from a majority antiferromagnetic (AF) and a minority metallic-superconducting (SC) phase. The very narrow NMR

Paris-Sud 11, Université de

374

Tensile Strain Switched Ferromagnetism in Layered NbS2 and NbSe2  

SciTech Connect

Developing approaches to effectively induce and control the magnetic states is critical to the use of magnetic nanostructures in quantum information devices but is still challenging. Here we have demonstrated, by employing the density functional theory calculations, an existence of infinite magnetic sheets with structural integrity and magnetic homogeneity. Examination from a series of transition metal dichalcogenides shows that the biaxial tensile strained NbS2 and NbSe2 structures can be magnetized with a ferromagnetic character due to the competitive effects of through-bond interaction and through-space interaction. The estimated Curie temperatures (387 and 542 K under the 10% strain for NbS2 and NbSe2 structures, respectively) suggest that the unique ferromagnetic character can be achieved above room temperature. The self-exchange of population between 4d orbitals of Nb atom that leads to the exchange splitting is the mechanism behind the transition of the spin moment. The induced magnetic moments can be significantly enhanced by the tensile strain, even giving rise to half-metallic character with the strong spin polarization around the Fermi level. Given the recent progress that the desired strain can be achieved on two-dimensional nanostructures, such as graphene and BN layer in a controlled way, we believe that our calculated results are suitable for experimental verification and implementation opening a new path to explore the spintronics in pristine two-dimensional nanostructures.

Zhou, Yungang; Wang, Zhiguo; Yang, Ping; Zu, Xiaotao; Yang, Li; Sun, Xin; Gao, Fei

2012-11-01T23:59:59.000Z

375

High-Temperature Microfluidic Synthesis of CdSe Nanocrystals inNanoliter Droplets  

SciTech Connect

The high-temperature synthesis of CdSe nanocrystals innanoliter-volume droplets flowing in a perfluorinated carrier fluidthrough a microfabricated reactor is presented. A flow-focusing nanojetstructure with a step increase in channel height reproducibly generatedoctadecene droplets in Fomblin Y 06/6 perfluorinated polyether atcapillary numbers up to 0.81 and with a droplet:carrier fluid viscosityratio of 0.035. Cadmium and selenium precursors flowing in octadecenedroplets through a high-temperature (240-300 degrees C) glassmicroreactor produced high quality CdSe nanocrystals, as verified byoptical spectroscopy and transmission electron microscopy. Isolating thereaction solution in droplets prevented particle deposition andhydrodynamic dispersion, allowing the reproducible synthesis ofnanocrystals at three different temperatures and four different residencetimes in the span of four hours. Our synthesis of a wide range ofnanocrystals at high temperatures, high capillary numbers, and lowviscosity ratio illustrates the general utility of droplet-basedmicrofluidic reactors to encapsulate nanoliter volumes of organic oraqueous solutions and to precisely control chemical or biochemicalreactions.

Chan, Emory M.; Alivisatos, A. Paul; Mathies, Richard A.

2005-06-09T23:59:59.000Z

376

Manufacturing technology development for CuInGaSe sub 2 solar cell modules  

DOE Green Energy (OSTI)

The report describes research performed by Boeing Aerospace and Electronics under the Photovoltaic Manufacturing Technology project. We anticipate that implementing advanced semiconductor device fabrication techniques to the production of large-area CuIn{sub 1-x}Ga{sub x}Se{sub 2} (CIGS)/Cd{sub 1-y}Zn{sub y}S/ZnO monolithically integrated thin-film solar cell modules will enable 15% median efficiencies to be achieved in high-volume manufacturing. We do not believe that CuInSe{sub 2} (CIS) can achieve this efficiency in production without sufficient gallium to significantly increase the band gap, thereby matching it better to the solar spectrum (i.e., x{ge}0.2). Competing techniques for CIS film formation have not been successfully extended to CIGS devices with such high band gaps. The SERI-confirmed intrinsic stability of CIS-based photovoltaics renders them far superior to a-Si:H-based devices, making a 30-year module lifetime feasible. The minimal amounts of cadmium used in the structure we propose, compared to CdTe-based devices, makes them environmentally safer and more acceptable to both consumers and relevant regulatory agencies. Large-area integrated thin-film CIGS modules are the product most likely to supplant silicon modules by the end of this decade and enable the cost improvements which will lead to rapid market expansion.

Stanbery, B.J. (Boeing Aerospace and Electronics Co., Seattle, WA (United States))

1991-11-01T23:59:59.000Z

377

SeZnSb alloy and its nano tubes, graphene composites properties  

Science Conference Proceedings (OSTI)

Composite can alter the individual element physical property, could be useful to define the specific use of the material. Therefore, work demonstrates the synthesis of a new composition Se{sub 96}-Zn{sub 2}-Sb{sub 2} and its composites with 0.05% multi-walled carbon nano tubes and 0.05% bilayer graphene, in the glassy form. The diffused amorphous structure of the multi walled carbon nano tubes and bilayer gaphene in the Se{sub 96}-Zn{sub 2}-Sb{sub 2} alloy have been analyzed by using the Raman, X-ray photoluminescence spectroscopy, Furrier transmission infrared spectra, photoluminescence, UV/visible absorption spectroscopic measurements. The diffused prime Raman bands (G and D) have been appeared for the multi walled carbon nano tubes and graphene composites, while the X-ray photoluminescence core energy levels peak shifts have been observed for the composite materials. Subsequently the photoluminescence property at room temperature and a drastic enhancement (upto 80%) in infrared transmission percentage has been obtained for the bilayer graphene composite, along with optical energy band gaps for these materials have been evaluated 1.37, 1.39 and 1.41 eV.

Singh, Abhay Kumar [Department of Physics, Indian Institute of Physics, Bangalore-560012 (India)

2013-04-15T23:59:59.000Z

378

Radiative rates and electron impact excitation rate coefficients for Ne-like selenium, Se XXV  

Science Conference Proceedings (OSTI)

In this article we report calculations of energy levels, radiative rates, electron impact collision strengths, and effective collision strengths for transitions among the 241 fine-structure levels arising from 2l{sup 8} and 2l{sup 7}n{sup '}l{sup '} (n{sup '{241 levels. The effective collision strengths are reported for all 28920 transitions among the 241 levels over a wide temperature range up to 10 keV. To assess the reliability and accuracy of the present collisional data, we have performed a 27-state close-coupling calculation, employing the Dirac R-matrix theory. The results from the close-coupling calculation and the independent-process calculation for the identical target states are found to be in good agreement. - Highlights: {yields} Radiative and collisional atomic data are presented for the lowest 241 fine-structure levels in Ne-like Se. {yields} Calculations are performed using the FAC package. {yields} Resonances enhance significantly a large amount of transitions. {yields} Radiative damping effects are significant for many transitions. {yields} Close-coupling effects are small in Ne-like Se.

Wang, K.; Chen, C.Y., E-mail: chychen@fudan.edu.cn; Huang, M.; Wang, Y.S.; Zou, Y.M.

2011-07-15T23:59:59.000Z

379

Characterization and device performance of (AgCu)(InGa)Se2 absorber layers  

DOE Green Energy (OSTI)

The study of (AgCu)(InGa)Se2 absorber layers is of interest in that Ag-chalcopyrites exhibit both wider bandgaps and lower melting points than their Cu counterparts. (AgCu)(InGa)Se2 absorber layers were deposited over the composition range 0 < Ag/(Ag+Cu) < 1 and 0.3 < Ga/(In+Ga) < 1.0 using a variety of elemental co-evaporation processes. Films were found to be singlephase over the entire composition range, in contrast to prior studies. Devices with Ga content 0.3 < Ga/(In+Ga) <0.5 tolerated Ag incorporation up to Ag/(Ag+Cu) = 0.5 without appreciable performance loss. Ag-containing films with Ga/(In+Ga) = 0.8 showed improved device characteristics over Cu-only control samples, in particular a 30-40% increase in short-circuit current. An absorber layer with composition Ag/(Ag+Cu) = 0.75 and Ga/(In+Ga) = 0.8 yielded a device with VOC = 890 mV, JSC = 20.5mA/cm2, fill factor = 71.3%, and ? = 13.0%.

Hanket, Gregory; Boyle, Jonathan H.; Shafarman, William N.

2009-06-08T23:59:59.000Z

380

Photoluminescence spectral study of single CdSe/ZnS Colloidal Nanocrystals in Poly(methyl methacrylate) and Quantum Dots molecules  

E-Print Network (OSTI)

of the CdSe/ZnS nanocrystals . . . . . . . .D. CdSe/ZnS NCs in negative photon resist SU-line shapes of single CdSe VI Optical characterization of

Shen, Yaoming

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Surface structure of CdSe Nanorods revealed by combined X-ray absorption fine structure measurements and ab-initio calculations  

E-Print Network (OSTI)

A) and relaxed (B) 2.4 nm diameter CdSe nanowire structuresSurface Structure of CdSe Nanorods Revealed by Combined X-underestimate of the bulk CdSe lattice constant predicted by

2006-01-01T23:59:59.000Z

382

Petrography and genetic history of coffinite and uraninite from the Liueryiqi granite-hosted uranium deposit, SE China  

E-Print Network (OSTI)

-hosted uranium deposit, SE China Maozhong Mina,b,*, Changquan Fanga , Mostafa Fayekc a Department of Earth-hosted uranium deposit, SE China, form a unique bbull's-eyeQ texture. These aggregates consist of concentric% at temperatures between 126 and 178 8C and a lithostatic pressure of 500 to 800 bars. Uranium was likely

Fayek, Mostafa

383

Formation of the Late Aptian Niveau Fallot black shales in the Vocontian Basin (SE France): evidence from foraminifera,  

E-Print Network (OSTI)

Formation of the Late Aptian Niveau Fallot black shales in the Vocontian Basin (SE France for the formation of the marlstone facies and the most prominent black shale intervals of the Late Aptian Niveau Fallot black shale succession from the Vocontian Basin (SE France). In the lower part of the succession

Pross, Jörg

384

Migrating data from TcSE to DOORS : an evaluation of the T-Plan Integrator software application.  

SciTech Connect

This report describes our evaluation of the T-Plan Integrator software application as it was used to transfer a real data set from the Teamcenter for Systems Engineering (TcSE) software application to the DOORS software application. The T-Plan Integrator was evaluated to determine if it would meet the needs of Sandia National Laboratories to migrate our existing data sets from TcSE to DOORS. This report presents the struggles of migrating data and focuses on how the Integrator can be used to map a data set and its data architecture from TcSE to DOORS. Finally, this report describes how the bulk of the migration can take place using the Integrator; however, about 20-30% of the data would need to be transferred from TcSE to DOORS manually. This report does not evaluate the transfer of data from DOORS to TcSE.

Post, Debra S. (Sandia National Laboratories, Livermore, CA); Manzanares, David A.; Taylor, Jeffrey L.

2011-02-01T23:59:59.000Z

385

Localization of electrons due to orbitally ordered bi-stripes in the bi-layer manganite La{sub 2-2x}Sr{sub 1+2x}Mn{sub 2}O{sub 7} (x {approximately} 0.59).  

SciTech Connect

Electronic phases with stripe patterns have been intensively investigated for their vital roles in unique properties of correlated electronic materials. How these real-space patterns affect the conductivity and other properties of materials (which are usually described in momentum space) is one of the major challenges of modern condensed matter physics. By studying the electronic structure of La{sub 2-2x}Sr{sub 1+2x}Mn{sub 2}O{sub 7} (x {approx} 0.59) and in combination with earlier scattering measurements, we demonstrate the variation of electronic properties accompanying the melting of so-called bi-stripes in this material. The static bi-stripes can strongly localize the electrons in the insulating phase above T{sub c} {approx} 160 K, while the fraction of mobile electrons grows, coexisting with a significant portion of localized electrons when the static bi-stripes melt below T{sub c}. The presence of localized electrons below T{sub c} suggests that the melting bi-stripes exist as a disordered or fluctuating counterpart. From static to melting, the bi-stripes act as an atomic-scale electronic valve, leading to a 'colossal' metal-insulator transition in this material.

Sun, Z.; Wang, Q.; Fedorov, A. V.; Zheng, H.; Mitchell, J. F.; Dessau, D. S. (Materials Science Division); (Univ. of Colorado at Boulder); (LBNL)

2011-07-19T23:59:59.000Z

386

Features of the charge-transport mechanism in layered Bi{sub 2}Te{sub 3} single crystals doped with chlorine and terbium  

Science Conference Proceedings (OSTI)

The temperature dependences (T = 5-300 K) of the resistivity in the plane of layers and in the direction perpendicular to the layers, as well as the Hall effect and the magnetoresistance (H < 80 kOe, T = 0.5-4.2 K) in Bi{sub 2}Te{sub 3} single crystals doped with chlorine and terbium, are investigated. It is shown that the doping of Bi{sub 2}Te{sub 3} with terbium atoms results in p-type conductivity and in increasing hole concentration. The doping of Bi{sub 2}Te{sub 3} with chlorine atoms modifies also the character of its conductivity instead of changing only the type from p to n. In the temperature dependence of the resistivity in the direction perpendicular to layers, a portion arises with the activation conductivity caused by the hopping between localized states. The charge-transport mechanism in Bi{sub 2}Te{sub 3} single crystals doped with chlorine is proposed.

Abdullaev, N. A., E-mail: anadir@azintex.com; Abdullaev, N. M.; Aliguliyeva, H. V.; Kerimova, T. G.; Mehdiyev, G. S. [National Academy of Sciences of Azerbaijan, Abdullaev Institute of Physics (Azerbaijan); Nemov, S. A. [St. Petersburg State Polytechnic University (Russian Federation)

2011-01-15T23:59:59.000Z

387

Novel approaches to low temperature transient liquid phase bonding in the In-Sn/Cu and In-Sn-Bi/Cu systems  

E-Print Network (OSTI)

A fluxless low temperature transient liquid phase (LTTLP) bonding process was studied as a method of producing Cu/Cu joints below 125C and 75C using interlayer alloys from the In-Sn and In-Sn-Bi systems. Using thermodynamic ...

Fischer, David S., Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

388

Preparation and Properties of High-T\\sub{c} Bi-Pb-Sr-Ca-Cu-O Thick Film Superconductors on YSZ Substrates  

Science Conference Proceedings (OSTI)

An evaluation of four firing profiles was performed to determine the optimum processing conditions for producing high-Tc Bi-PB-SR-Ca-Cu-O thick films on yttria-stabilized zirconia substrates. Using these four profiles, the effects of sintering temperatures ...

Hooker M. W.

1996-12-01T23:59:59.000Z

389

Performance assessment and improvement of an existing air conditioning system of a supermarket: a case study on bi-lo supermarket  

Science Conference Proceedings (OSTI)

Bi-Lo Supermarket in this study is located in sub-tropical coastal area in Queensland, Australia. The main objective of air conditioning in any building or supermarket is to provide comfort to the occupants and patrons of the conditioned space, an objective ... Keywords: air conditioning systems, design principles, performance improvement, supermarket

M. Hansen; M. G. Rasul

2008-02-01T23:59:59.000Z

390

Electrochemical lithium insertion in the solid solution Bi{sub 2}WO{sub 6}-Sb{sub 2}WO{sub 6} with Aurivillius framework  

Science Conference Proceedings (OSTI)

Following the structural evolution of the Aurivillius crystalline framework in the solid solution Bi{sub 2}WO{sub 6}-Sb{sub 2}WO{sub 6} we have carried out an electrochemical lithium insertion study in this system. A slight loss of the specific capacity of the electrochemical cell was observed as amount of Sb was increased. In general, the different compositions within solid solution Bi{sub 2-x}Sb{sub x}WO{sub 6} (0.25 {<=} x {<=} 0.75) exhibited a similar behaviour featured mainly by two semiconstant potential regions located at 1.7 and 0.8 V versus Li{sup +}/Li{sup o}. The oxide Sb{sub 2}WO{sub 6} with Autivillius structure but without Bi was tested as cathode too. The maximum amount of lithium inserted, 13.5 lithium atoms per formula, is the same amount inserted in its homologous bismuth oxide Bi{sub 2}WO{sub 6}.

Martinez-de la Cruz, A. [Division de Estudios de Posgrado, Facultad de Ingenieria Mecanica y Electrica, Universidad Autonoma de Nuevo Leon, Pedro de Alba s/n, Ciudad Universitaria, C.P. 66451, San Nicolas de los Garza, NL (Mexico)], E-mail: azmartin@gama.fime.uanl.mx; Longoria Rodriguez, F.E. [Departamento de Quimica, Campus Universitario Los Guaritos, Universidad de Oriente, Av. Universidad, CP 6203 Monagas (Venezuela)

2007-10-02T23:59:59.000Z

391

Silicon-containing copolymers of MMA tested for a positive-tone high-resolution bi-layer e-beam resist system  

Science Conference Proceedings (OSTI)

Copolymers of methylmethacrylate (MMA) and trimethylsilyl-methylmethacrylate (SiMMA) in various molar ratios have been synthesised and characterised for use as a resist in electron beam lithography. The development procedure has been optimised in terms ... Keywords: Bi-layer system, Electron beam lithography, Resist, Silicon-loaded PMMA

J. Maessen; S. van den Boogaart; E. J. K. Verstegen; J. G. Kloosterboer; F. C. M. J. M. van Delft; W. Catsburg; F. H. P. M. Habraken

2005-03-01T23:59:59.000Z

392

Stable n-CuInSe/sub 2/iodide-iodine photoelectrochemical cell  

DOE Patents (OSTI)

In a photoelectrochemical solar cell, stable output and solar efficiency in excess of 10% are achieved with a photoanode of n-CuInSe/sub 2/ electrode material and an iodine/iodide redox couple used in a liquid electrolyte. The photoanode is prepared by treating the electrode material by chemical etching, for example in Br/sub 2//MeOH; heating the etched electrode material in air or oxygen; depositing a surface film coating of indium on the electrode material after the initial heating; and thereafter again heating the electrode material in air or oxygen to oxidize the indium. The electrolyte is treated by the addition of Cu/sup +/ or Cu/sup 2 +/ salts and in In/sup 3 +/ salts.

Cahen, D.; Chen, Y.W.

1984-09-20T23:59:59.000Z

393

Stable N-CuInSe.sub.2 /iodide-iodine photoelectrochemical cell  

DOE Patents (OSTI)

In a photoelectrochemical solar cell, stable output and solar efficiency in excess of 10% are achieved with a photoanode of n-CuInSe.sub.2 electrode material and an iodine/iodide redox couple used in a liquid electrolyte. The photoanode is prepared by treating the electrode material by chemical etching, for example in Br.sub.2 /MeOH; heating the etched electrode material in air or oxygen; depositing a surface film coating of indium on the electrode material after the initial heating; and thereafter again heating the electrode material in air or oxygen to oxidize the indium. The electrolyte is treated by the addition of Cu.sup.+ or Cu.sup.2+ salts and In.sup.3+ salts.

Cahen, David (Rehovot, IL); Chen, Yih W. (Lakewood, CO)

1985-01-01T23:59:59.000Z

394

Optical and quantum efficiency analysis of (Ag,Cu)(In,Ga)Se2 absorber layers  

DOE Green Energy (OSTI)

(Ag,Cu)(In,Ga)Se2 thin films have been deposited by elemental co-evaporation over a wide range of compositions and their optical properties characterized by transmission and reflection measurements and by relative shift analysis of quantum efficiency device measurements. The optical bandgaps were determined by performing linear fits of (?h?)2 vs. h?, and the quantum efficiency bandgaps were determined by relative shift analysis of device curves with fixed Ga/(In+Ga) composition, but varying Ag/(Cu+Ag) composition. The determined experimental optical bandgap ranges of the Ga/(In+Ga) = 0.31, 0.52, and 0.82 groups, with Ag/(Cu+Ag) ranging from 0 to 1, were 1.19-1.45 eV, 1.32-1.56 eV, and 1.52-1.76 eV, respectively. The optical bowing parameter of the different Ga/(In+Ga) groups was also determined.

Boyle, Jonathan; Hanket, Gregory; Shafarman, William

2009-06-09T23:59:59.000Z

395

Co-Evaporated Cu2ZnSnSe4 Films and Devices  

DOE Green Energy (OSTI)

The use of vacuum co-evaporation to produce Cu2ZnSnSe4 photovoltaic devices with 9.15% total-area efficiency is described. These new results suggest that the early success of the atmospheric techniques for kesterite photovoltaics may be related to the ease with which one can control film composition and volatile phases, rather than a fundamental benefit of atmospheric conditions for film properties. The co-evaporation growth recipe is documented, as is the motivation for various features of the recipe. Characteristics of the resulting kesterite films and devices are shown in scanning electron micrographs, including photoluminescence, current-voltage, and quantum efficiency. Current-voltage curves demonstrate low series resistance without the light-dark cross-over seen in many devices in the literature. Band gap indicated by quantum efficiency and photoluminescence is roughly consistent with that expected from first principles calculation.

Repins, I.; Beall, C.; Vora, N.; DeHart, C.; Kuciauskas, D.; Dippo, P.; To, B.; Mann, J.; Hsu, W. C.; Goodrich, A.; Noufi, R.

2012-06-01T23:59:59.000Z

396

Tuning the Surface Structure and Optical Properties of CdSe Clusters Using Coordination Chemistry  

Science Conference Proceedings (OSTI)

A series of nonstoichiometric CdSe clusters with lowest energy electronic absorptions between 409 and 420 nm has been prepared from cadmium 1-naphthoate, 2-naphthoate, 4-thiomethyl-1-naphthaote, and 1-naphthalene thiolate complexes and diphenylphosphine selenide (DPPSe). Pair distribution function analysis of X-ray diffraction data, ligand exchange experiments, and NMR molecular weight analyses suggest the nanocrystal core changes minimally among these clusters despite significant changes to their absorption and luminescence spectra. Photoluminescence excitation spectra obtained at 77 K reveal an energy transfer process between the surface-trapped excited state and the naphthalene-containing ligands that leads to ligand phosphorescence. A Dexter energy transfer mechanism is proposed to explain the observation of ligand phosphorescence on excitation of the cluster. These compounds demonstrate that cluster absorption and trap luminescence can be controlled with surface coordination chemistry.

Cossairt, Brandi M.; Juhas, Pavol; Billinge, Simon J.L.; Owen, Jonathan S. (Columbia)

2012-03-26T23:59:59.000Z

397

Ordered structures based on self-organized Au and CdSe nanoparticles  

SciTech Connect

Methods for obtaining cadmium selenide and gold nanoparticles have been developed. The sizes of the nanoparticles are determined and the morphology, structure, and chemical composition of these nanoparticles and their ensembles are studied by a complex of structural methods: electron diffraction, X-ray diffraction, energy-dispersive X-ray analysis, high-resolution transmission electron microscopy, and small-angle X-ray scattering. Gold nanoparticles are mainly spherical and have an average size of 10 nm. They are single-phase and have an fcc crystal structure. Samples of synthesized CdSe nanoparticles contain monodisperse spherical particles 12 nm in size with a wurtzite structure. The deposition of nanoparticles on a carbon substrate is accompanied by their self-organization into a closely packed two-dimensional structure with a pronounced texture in which all nanoparticles are oriented in the [001] direction perpendicularly to the carbon substrate plane.

Zaporozhets, M. A., E-mail: zaporozhets_m.a@mail.ru [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Savilov, S. V. [Moscow State University (Russian Federation); Zhigalina, O. M. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Sul'yanov, S. N.; Volkov, V. V. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Nikolaichik, V. I. [Russian Academy of Sciences, Institute of Microelectronics Technology and High Purity Materials (Russian Federation); Gubin, S. P. [Russian Academy of Sciences, Kurnakov Institute of General and Inorganic Chemistry (Russian Federation); Avilov, A. S. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

2012-05-15T23:59:59.000Z

398

Using shape to control photoluminescence from CdSe/CdS core/shell nanorods.  

Science Conference Proceedings (OSTI)

CdSe/CdS core/shell nanorods can exhibit high photoluminescence quantum yields, but it is not yet clear what processes determine the yields and how they can be controlled. Moreover, the effective band alignment between the core and the shell affects quantum yield, but its nature is still under debate. We systematically studied quantum yields when the shell is excited as a function of both core size and shell volume. Using time-resolved photoluminescence decay measurements and transient-absorption spectroscopy, we found that quantum yields are determined by a balance between radiative and nonradiative recombination rates, and not by single-carrier trapping. The radiative recombination rate decreases as the nanorod volume increases, independent of the core size. The results indicate that high quantum yields can be obtained only by limiting the size of the shell and point to an effective quasi-type-II band alignment for all of the nanorods in this study.

She, C.; Demortiere, A.; Shevchenko, E. V.; Pelton, M. (Center for Nanoscale Materials)

2011-06-16T23:59:59.000Z

399

Spin excitations in K2Fe4+xSe5: Linear response approach  

Science Conference Proceedings (OSTI)

Using ab initio linear response techniques we calculate spin-wave spectra in K2Fe4+xSe5, and find them to be in excellent agreement with a recent experiment. The spectrum can be described reasonably well by a localized spin Hamiltonian restricted to first and second nearest neighbor couplings. We confirm that exchange coupling between nearest neighbor Fe magnetic moments is strongly anisotropic, and show directly that in the ideal system this anisotropy has an itinerant nature which can be imitated by introducing higher order terms in the effective localized spin Hamiltonian (biquadratic coupling). In the real system, structural relaxation provides an additional source of the exchange anisotropy of approximately the same magnitude. The dependence of spin-wave spectra on the filling of Fe vacancy sites is also discussed.

Ke, Liqin; van Schilfgaarde, Mark; Antropov, Vladimir

2012-07-17T23:59:59.000Z

400

Photodarkening Effect in a-(GaSe){sub 90}Ag{sub 10} Thin Films  

Science Conference Proceedings (OSTI)

The present paper reports the laser induced changes on the optical properties of a-(GaSe){sub 90}Ag{sub 10} thin films prepared by thermal evaporation technique. Thin film samples, on glass substrate, were exposed to laser light of wavelength {lambda} = 532 nm for different exposure times, t{sub E}(t{sub E}=0{sub s}, 500 s, 1000 s and 3000 s). Optical parameters like absorption coefficient and optical energy gap of as- deposited thin film and their laser induced changes were studied at three different times of exposure. The value of absorption coefficient of these thin film increases on exposing the film to laser irradiation. The optical absorption edge shift to lower photon energy i.e. the Photodarkening (PD) effect occurs. The results have been explained on the basis of structural changes that are occurring after the laser irradiation.

Gupta, Shikha; Mustafa, F. I.; Saini, G. S. S.; Goyal, Navdeep; Tripathi, S. K. [Department of Physics, Panjab University, Chandigarh-160 014 (India)

2011-12-12T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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401

Growth mechanism and surface atomic structure of AgInSe{sub 2}  

Science Conference Proceedings (OSTI)

The growth of (112)A-oriented AgInSe{sub 2} on GaAs (111)A and its surface reconstruction were studied by scanning tunneling microscopy, atomic force microscopy, and other techniques. Films were grown by a sputtering and evaporation method. Topographic STM images reveal that the film grew by atomic incorporation into surface steps resulting from screw dislocations on the surface. The screw dislocation density was {approx}10{sup 10} cm{sup 2}. Atomically resolved images also show that the surface atomic arrangement appears to be similar to that of the bulk, with a spacing of 0.35-0.41 nm. There is no observable reconstruction, which is unexpected for a polar semiconductor surface.

Pena Martin, Pamela; Rockett, Angus A.; Lyding, Joseph [Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 1304 W. Green St., Urbana, Illinois 61801 (United States); Department of Electrical and Computer Engineering and the Beckman Institute, University of Illinois at Urbana-Champaign, 405 N. Matthews St., Urbana, Illinois 61801 (United States)

2012-07-15T23:59:59.000Z

402

Environmental issues related to commercialization of CulnSe{sub 2}- based photovoltaics  

DOE Green Energy (OSTI)

One of the most promising materials for low-cost thin film photovoltaic cells is copper indium selenide (CuInSe{sub 2} or CIS). As with any new material, successful commercialization of CIS photovoltaic (PV) technology will require attention to environmental issues related to the sources of raw materials, their usage, and the disposal and/or recycling of products at the end of their useful life. This paper focuses on three specific environmental issues related to CIS technology: (i) Economics of the use and re-use of materials; (ii) regulations on environmental disposal and waste handling, and (iii) logistics and economics of recycling and disposing of products by industries faced with comparable environmental issues.

Eberspacher, C. [UNISUN, Newbury Park, CA (United States); Fthenakis, V.M.; Moskowitz, P.D.

1996-07-01T23:59:59.000Z

403

Structural and magnetic characterization of BiFe{sub x}Mn{sub 2-x}O{sub 5} oxides (x=0.5, 1.0)  

SciTech Connect

The title compounds have been synthesized by a citrate technique followed by thermal treatments in air (BiFe{sub 0.5}Mn{sub 1.5}O{sub 5}) or under high oxygen pressure conditions (BiFeMnO{sub 5}), and characterized by X-ray diffraction (XRD), neutron powder diffraction (NPD) and magnetization measurements. The crystal structures have been refined from NPD data in the space group Pbam at 295 K. These phases are isostructural with RMn{sub 2}O{sub 5} oxides (R=rare earths) and contain infinite chains of Mn{sup 4+}O{sub 6} octahedra sharing edges, linked together by (Fe,Mn){sup 3+}O{sub 5} pyramids and BiO{sub 8} units. These units are strongly distorted with respect to those observed in other RFeMnO{sub 5} compounds, due to the presence of the electronic lone pair on Bi{sup 3+}. It is noteworthy the certain level of antisite disorder exhibited in both samples, where the octahedral positions are partially occupied by Fe cations, and vice versa. BiFe{sub x}Mn{sub 2-x}O{sub 5} (x=0.5, 1.0) are short-range magnetically ordered below 20 K for x=0.5 and at 40 K for x=1.0. The main magnetic interactions seem to be antiferromagnetic (AFM); however, the presence of a small hysteresis in the magnetization cycles indicates the presence of some weak ferromagnetic (FM) interactions. - Graphical Abstract: BiFe{sub x}Mn{sub 2-x}O{sub 5} (x=0.5, 1.0) samples are isostructural with BiMn{sub 2}O{sub 5}, belonging to the Pbam space group. The crystal structure contains infinite chains of edge-sharing Mn{sup 4+}O{sub 6} octahedra, interconnected by dimer units of Fe{sup 3+}O{sub 5} square pyramids. These units are strongly distorted due to the presence of the electronic lone pair on Bi{sup 3+}. They are magnetically ordered at low temperatures. The main magnetic interactions seem to be antiferromagnetic with the presence of some weak ferromagnetic response. Highlights: > Two new compounds of formula BiFe{sub x}Mn{sub 2-x}O{sub 5} (x=0.5, 1.0) have been obtained. > Their crystallographic structure is isotypical with that of RMn{sub 2}O{sub 5} materials. > The presence of the electronic lone pair on Bi{sup 3+} severely distorts the crystal structure. > There is no establishment of a long-range ferrimagnetic structure.

Retuerto, M., E-mail: retuerto@rci.rutgers.edu [Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco, E-28049 Madrid (Spain); Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road Piscataway, NJ 08854-808 (United States); Martinez-Lope, M.J. [Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco, E-28049 Madrid (Spain); Krezhov, K. [Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee Boulevard, Sofia 1784 (Bulgaria); Fernandez-Diaz, M.T. [Institut Laue-Langevin, BP156X, Grenoble F-38042 (France); Alonso, J.A. [Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco, E-28049 Madrid (Spain)

2011-09-15T23:59:59.000Z

404

Research on polycrystalline thin-film CuGaInSe[sub 2] solar cells  

DOE Green Energy (OSTI)

This report describes research to fabricate high-efficiency CdZnS/CuInGaSe[sub 2] (CIGS) thin-film solar cells, and to develop improved transparent conductor window layers such as ZnO. A specific technical milestone was the demonstration of an air mass (AM) 1.5 global, 13% efficient, 1-cm[sup 2]-total-area CIGS thin-film solar cell. Our activities focused on three areas. First, a CIGS deposition: system was modified to double its substrate capacity, thus increasing throughput, which is critical to speeding the process development by providing multiple substrates from the same CIGS run. Second, new tooling was developed to enable an investigation of a modified aqueous CdZnS process. The goal was to improve the yield of this critical step in the device fabrication process. Third, our ZnO sputtering system was upgraded to improve its reliability, and the sputtering parameters were further optimized to improve its properties as a transparent conducting oxide. The characterization of the new CIGS deposition system substrate fixturing was completed, and we produced good thermal uniformity and adequately high temperatures for device-quality CIGS deposition. Both the CIGS and ZnO deposition processes were refined to yield a ZnO//Cd[sub 0.82]Zn[sub 0.18]S/CuIn[sub 0.80]Ga[sub 0.20]Se[sub 2] cell that was verified at NREL under standard testing conditions at 13.1% efficiency with V[sub oc] = 0.581 V, J[sub sc] = 34.8 mA/cm[sup 2], FF = 0.728, and a cell area of 0.979 cm[sup 2].

Stanbery, B.J.; Chen, W.S.; Devaney, W.E.; Stewart, J.W. (Boeing Co., Seattle, WA (United States). Defense and Space Systems Group)

1992-11-01T23:59:59.000Z

405

Reduced leakage in epitaxial BiFeO{sub 3} films following oxygen radio frequency plasma treatment  

SciTech Connect

Epitaxial BiFeO{sub 3} (BFO) films were deposited using pulsed laser deposition method. The prepared films were characterized using x-ray diffraction, x-ray reflectivity, ferroelectric loop tracer, and leakage current measurements before and after oxygen plasma treatment. The leakage current of the films, a crucial parameter in device applications, is observed to be reduced by two orders of magnitude with oxygen plasma treatment at room temperature. P-E hysteresis loops were observed in oxygen plasma treated BFO films. The observed results indicate the usefulness of oxygen radio frequency plasma treatment (RF 13.56 MHz), which is an effective and low temperature processing technique, in such lossy ferroelectric thin films.

Kothari, Deepti [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India) [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India); UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452 017 (India); Upadhyay, Sanjay K.; Raghavendra Reddy, V. [UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452 017 (India)] [UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452 017 (India); Jariwala, C.; Raole, P. M. [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)] [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

2013-06-07T23:59:59.000Z

406

The Use of Oxygen Gradients as a Texturing Mechanism During Isothermal Melt Processing of Bi-2212 Superconductors  

Science Conference Proceedings (OSTI)

Isothermal melt processing has been used to produce high critical currents (I{sub c}`s) and current densities (J{sub c}`s) in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub y} round wires and flat tapes. I{sub c}`s and J{sub c}`s of 225 A and 80 kA/cm{sup 2} have been obtained in short length, monocore wires. However, voids and other macroscopic defects have limited performance over longer lengths. Isothermally melt processed tapes have yielded I{sub c} and J{sub c} values up to 341 A and 245 kA/cm{sup 2}, although performance over longer lengths is somewhat reduced. A test coil made from 0.5 m of tape yielded, I{sub c} and J{sub c} values of 208 A and 153 kA/cm{sup 2}, respectively.

Holesinger, T.G.; Hults, W.L.; Smith, J.L. [Los Alamos National Lab., NM (United States); Dai, Weiming; Marken, K.R. [Oxford Instruments Inc., Carteret, NJ (United States)

1997-01-01T23:59:59.000Z

407

Thermal evolution of the full three-dimensional magnetic excitations in the multiferroic BiFeO3  

SciTech Connect

We present neutron inelastic scattering measurements of the full three-dimensional spin-wave dispersion in the multiferroic material BiFeO3 for temperatures from 5K to 700K. Despite the presence of strong electromagnetic coupling, the magnetic excitations behave like conventional magnons over all parts of the Brillouin zone. At low temperature the spin-waves are well-defined coherent modes, described by a classical model for a G-type antiferromagnet. A softening of the spin-wave velocity and broadening in energy is already present at room temperature, which is well below the N eel temperature TN 640K, and increases on heating. In addition, a strong hybridization of the Fe 3d and O 2p states is found to modify the distribution of the spin-wave spectral weight significantly, which implies that the spins are not restricted to the Fe atomic sites as previously believed.

Xu, Zhijun [ORNL; Wen, Jinsheng [University of California, Berkeley; Berlijn, Tom [ORNL; Gehring, Peter M [ORNL; Stock, Christopher K [ORNL; Stone, Matthew B [ORNL; Gu, G. D. [Brookhaven National Laboratory (BNL); Shapiro, S. M. [Brookhaven National Laboratory (BNL); Birgeneau, R J [University of California, Berkeley & LBNL; Xu, Guangyong [Brookhaven National Laboratory (BNL)

2012-01-01T23:59:59.000Z

408

Lightweight PV Inverters: Dual Bi-Directional IGBTs Modules Enables Breakthrough PV Inverter Using Current Modulation Topology  

Science Conference Proceedings (OSTI)

Solar ADEPT Project: PV inverters convert DC power generated by modules into usable AC power. IPCs initial 30kW 94lb. PV inverter reduces the weight of comparable 30kW PV inverters by 90%reducing the cost of materials, manufacturing, shipping, and installation. With ARPA-E support, new bi-directional silicon power switches will be developed, commercialized, and utilized in IPCs next-generation PV inverter. With these components, IPC will produce 100kW inverters that weight less than 100lb., reducing the weight of conventional 3,000lb. 100kW inverters by more than 95%. The new power switches will cut IPCs $/W manufacturing cost in half, as well as further reduce indirect shipping and installation costs.

None

2012-01-30T23:59:59.000Z

409

Effect of radical fluorination on mono- and bi-layer graphene in Ar/F{sub 2} plasma  

SciTech Connect

Fluorinated graphene has the possibility to achieve unique properties and functions in graphene. We propose a highly controlled fluorination method utilizing fluorine radicals in Ar/F{sub 2} plasma. To suppress ion bombardments and improve the reaction with fluorine radicals on graphene, the substrate was placed 'face down' in the plasma chamber. Although monolayer graphene was more reactive than bilayer, fluorination of bilayer reached the level of I{sub D}/I{sub G} {approx} 0.5 in Raman D peak intensity at 532 nm excitation. Annealing fluorinated samples proved reversibility of radical fluorination for both mono- and bi-layer graphenes. X-ray photoelectron spectroscopy showed the existence of carbon-fluorine bonding.

Tahara, K.; Iwasaki, T.; Hatano, M. [Department of Physical Electronics, Tokyo Institute of Technology, Tokyo 152-8552 (Japan); Matsutani, A. [Semiconductor and MEMS Processing Center, Technical Department, Tokyo Institute of Technology, Tokyo 226-8503 (Japan)

2012-10-15T23:59:59.000Z

410

The aptitude of barium and bismuth to form layered cuprates: Bi sub 2 Ba sub 2 minus x La sub x CuO sub 6+. delta. , a 2201-type structure. [Title compound is not a superconductor  

Science Conference Proceedings (OSTI)

A bismuth barium cuprate, Bi{sub 2}Ba{sub 2{minus}x}La{sub x}CuO{sub 6 + {delta}} with a layered structure has been synthesized for the first time for 0.50 {le} x {le} 1. This oxide is isotypic with 2201 Bi{sub 2}Sr{sub 2}CuO{sub 6} superconductor, i.e., corresponds to the intergrowth of single BaCuO{sub 3} perovskite layers with triple ((BiO){sub 2}BaO) {proportional to} layers. The modulated character of the structure is documented and the possibility of inducing superconductivity in this structural type is discussed.

Pham, A.Q.; Hervieu, M.; Michel, C.; Raveau, B. (Lab CRISMAT-Associe au CNRS, Caen (France))

1992-06-01T23:59:59.000Z

411

Noise Kernel in Stochastic Gravity and Stress Energy Bi-Tensor of Quantum Fields in Curved Spacetimes  

E-Print Network (OSTI)

The noise kernel is the vacuum expectation value of the (operator-valued) stress-energy bi-tensor which describes the fluctuations of a quantum field in curved spacetimes. It plays the role in stochastic semiclassical gravity based on the Einstein-Langevin equation similar to the expectation value of the stress-energy tensor in semiclassical gravity based on the semiclassical Einstein equation. According to the stochastic gravity program, this two point function (and by extension the higher order correlations in a hierarchy) of the stress energy tensor possesses precious statistical mechanical information of quantum fields in curved spacetime and, by the self-consistency required of Einstein's equation, provides a probe into the coherence properties of the gravity sector (as measured by the higher order correlation functions of gravitons) and the quantum nature of spacetime. It reflects the low and medium energy (referring to Planck energy as high energy) behavior of any viable theory of quantum gravity, including string theory. It is also useful for calculating quantum fluctuations of fields in modern theories of structure formation and for backreaction problems in cosmological and black holes spacetimes. We discuss the properties of this bi-tensor with the method of point-separation, and derive a regularized expression of the noise-kernel for a scalar field in general curved spacetimes. One collorary of our finding is that for a massless conformal field the trace of the noise kernel identically vanishes. We outline how the general framework and results derived here can be used for the calculation of noise kernels for Robertson-Walker and Schwarzschild spacetimes.

Nicholas G Phillips; B. L. Hu

2000-10-05T23:59:59.000Z

412

Recent progress in nanostructured multiferroic Bi{sub 2}FeCrO{sub 6} thin films  

Science Conference Proceedings (OSTI)

We report the latest progress on the growth and characterization of Bi{sub 2}FeCrO{sub 6} (BFCO), a recently discovered multiferroic system. BFCO thin films and nanostructures exhibit exceptional multiferroic properties at room temperature. The growth of pure BFCO thin films on STO substrates is possible only in a narrow window of deposition parameters (i.e., Oxygen pressure pO{sub 2}=1.2 Multiplication-Sign 10{sup -2} mbar and around a substrate temperature T{sub S}=680 Degree-Sign C). The epitaxial growth stabilizes the metastable single phase of this material and promotes the Fe/Cr cation ordering in both thin films and nanostructures. This cationic ordering which is responsible for good magnetic properties of BFCO is also at the origin of pronounced photovoltaic (PV) properties observed in the epitaxial films grown on STO substrates. The results indicate that the ferroelectric polarization plays a dominant role in the observed PV effect. - Graphical abstract: (Top) Crystal structure of BFCO thin films deposited on (1 1 1)-oriented SrTiO3:Nb substrates and direct evidence of the presence of cationic ordering Fe/Cr in the films. (Bottom) Control of the crystal orientation and the shape of the epitaxial nanostructures by the orientation of the niobium-doped STO substrates. Highlights: Black-Right-Pointing-Pointer Growth optimization of Bi{sub 2}FeCrO{sub 6} (BFCO) thin films and nanostructures by pulsed laser deposition. Black-Right-Pointing-Pointer Ordered BFCO single phase have been stabilized by epitaxial strain. Black-Right-Pointing-Pointer Arbitrary patterns of heteroepitaxial multiferroic BFCO nanostructures have been fabricated by PLD combined with nanostenciling. Black-Right-Pointing-Pointer Experimental characterizations revealed the excellent multiferroic character of BFCO thin films and nanostructures. Black-Right-Pointing-Pointer Unprecedentedly high power conversion efficiency for ferroelectrics was observed in 125 nm-thick highly ordered BFCO films.Graphical abstract legend.

Nechache, Riad, E-mail: Nechache@emt.inrs.ca [NAST Center and Department of Chemical Science and Technology, University of Rome Tor Vergata Via della Ricerca Sceintifica 1, 00133 Rome Italy (Italy); Centre Energie, Materiaux et Telecommunications, INRS, 1650, boulevard Lionel-Boulet, Varennes, Quebec J3x 1S2 (Canada); Rosei, Federico, E-mail: rosei@emt.inrs.ca [Centre Energie, Materiaux et Telecommunications, INRS, 1650, boulevard Lionel-Boulet, Varennes, Quebec J3x 1S2 (Canada)

2012-05-15T23:59:59.000Z

413

Molecular-beam epitaxy and robust superconductivity of stoichiometric FeSe crystalline films on bilayer graphene  

Science Conference Proceedings (OSTI)

We report on molecular beam epitaxy growth of stoichiometric and superconducting FeSe crystalline thin films on double-layer graphene. Layer-by-layer growth of high-quality films has been achieved in a well-controlled manner by using Se-rich condition, which allow us to investigate the thickness-dependent superconductivity of FeSe. In situ low-temperature scanning tunneling spectra reveal that the local superconducting gap in the quasiparticle density of states is visible down to two triple layers for the minimum measurement temperature of 2.2 K, and that the transition temperature T{sub c} scales inversely with film thickness.

Song Canli; Jiang Yeping; Xue Qikun [State Key Laboratory for Surface Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); State Key Laboratory for Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084 (China); Wang Yilin; Li Zhi; Wang Lili; He Ke; Ma Xucun [State Key Laboratory for Surface Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Chen Xi [State Key Laboratory for Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084 (China)

2011-07-01T23:59:59.000Z

414

Photodeposition of Pt on Colloidal CdS and CdSe/CdS Semiconductor Nanostructures  

DOE Green Energy (OSTI)

Semiconductor photocatalysis has been identified as a promising avenue for the conversion of solar energy into environmentally friendly fuels, most notably by the production of hydrogen from water.[1-5] Nanometer-scale materials in particular have attracted considerable scientific attention as the building blocks for light-harvesting applications.[6,7] Their desirable attributes include tunability of the optical properties with size, amenability to relatively inexpensive low-temperature processing, and a high degree of synthetic sophistication leading to increasingly complex and multi-functional architectures. For photocatalysis in particular, the high surface-to-volume ratios in nanoscale materials should lead to an increased availability of carriers for redox reactions on the nanoparticle surface. Recombination of photoexcited carriers directly competes with photocatalytic activity.[3] Charge separation is often achieved with multi-component heterostructures. An early example is the case of TiO2 powders functionalized with Pt and RuO2 particles, where photoexcited electrons are transferred to Pt (the reduction site) and holes to RuO2 (the oxidation site).[8] More recently, many colloidally synthesized nanometer-scale metal-semiconductor heterostructures have been reported.[7,9,10] A majority of these structures are made by thermal methods.[7,10] We have chosen to study photochemical formation of metal-semiconductor heterostructures. The detailed understanding of the mechanisms involved in photodeposition of metals on nanometer-scale semiconductors is necessary to enable a high degree of synthetic control. At the same time, because the results of metal deposition can be directly observed by electron microscopy, it can be used to understand how factors such as nanocrystal composition, shape, carrier dynamics, and surface chemistry influence the photochemical properties of semiconductor nanocrystals. In this communication, we report on the photodeposition of Pt on colloidal CdS and CdSe/CdS core/shell nanocrystals. Among the II-VI semiconductors, CdS is of particular interest because it has the correct band alignment for water photolysis[2] and has been demonstrated to be photocatalytically active.[11-16] We have found that the photoexcitation of CdS and CdSe/CdS in the presence of an organometallic Pt precursor leads to deposition of Pt nanoparticles on the semiconductor surface. Stark differences are observed in the Pt nanoparticle location on the two substrates, and the photodeposition can be completely inhibited by the modification of the semiconductor surface. Our results suggest that tuning of the semiconductor band structure, spatial organization and surface chemistry should be crucial in the design of photocatalytic nanostructures.

Dukovic, Gordana; Merkle, Maxwell G.; Nelson, James H.; Hughes, Steven M.; Alivisatos, A. Paul

2008-08-06T23:59:59.000Z

415

CdSe/CdTe type-II superlattices grown on GaSb (001) substrates by molecular beam epitaxy  

SciTech Connect

CdSe/CdTe superlattices are grown on GaSb substrates using molecular beam epitaxy. X-ray diffraction measurements and cross-sectional transmission electron microscopy images indicate high crystalline quality. Photoluminescence (PL) measurements show the effective bandgap varies with the superlattice layer thicknesses and confirm the CdSe/CdTe heterostructure has a type-II band edge alignment. The valence band offset between unstrained CdTe and CdSe is determined as 0.63 {+-} 0.06 eV by fitting the measured PL peak positions using the envelope function approximation and the Kronig-Penney model. These results suggest that CdSe/CdTe superlattices are promising candidates for multi-junction solar cells and other optoelectronic devices based on GaSb substrates.

Li Jingjing; Liu Shi; Wang Shumin; Ding Ding; Johnson, Shane R.; Zhang Yonghang [Center for Photonics Innovation, Arizona State University, Tempe, Arizona 85287 (United States); School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287 (United States); Liu Xinyu; Furdyna, Jacek K. [Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States); Smith, David J. [Center for Photonics Innovation, Arizona State University, Tempe, Arizona 85287 (United States); Department of Physics, Arizona State University, Tempe, Arizona 85287 (United States)

2012-03-19T23:59:59.000Z

416

Enhanced photorefractive performance in CdSe quantum-dot-dispersed poly(styrene-co-acrylonitrile) polymers  

Science Conference Proceedings (OSTI)

This paper reports on the enhanced photorefractive behavior of a CdSe quantum-dot-dispersed less expensive polymer of poly(styrene-co-acrylonitrile). The capability of CdSe quantum dots used as photosensitizers and the associated photorefractive performance are characterized through a photocurrent experiment and a two-beam coupling experiment, respectively. An enhanced two-beam coupling gain coefficient of 12.2 cm{sup -1} at 46 V/mum was observed owning to the reduced potential barrier. The photorefractive performance per CdSe quantum dot is three orders of magnitude higher than that in the sample sensitized by trinitrofluorenone in poly(styrene-co-acrylonitrile), and almost ten times higher than that in the CdSe quantum-dot-sensitized poly(N-vinylcarbazole) polymers.

Li Xiangping; Embden, Joel van; Chon, James W. M.; Gu Min [Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria 3122 (Australia); Evans, Richard A. [CSIRO Molecular and Health Technologies, Bag 10, Clayton South, Victoria 3169 (Australia)

2010-06-21T23:59:59.000Z

417

Quantitative size-dependent structure and strain determination of CdSe nanoparticles using atomic pair distribution function analysis  

E-Print Network (OSTI)

The size-dependent structure of CdSe nanoparticles, with diameters ranging from 2 to 4 nm, has been studied using the atomic pair distribution function (PDF) method. The core structure of the measured CdSe nanoparticles can be described in terms of the wurtzite atomic structure with extensive stacking faults. The density of faults in the nanoparticles ~50% . The diameter of the core region was extracted directly from the PDF data and is in good agreement with the diameter obtained from standard characterization methods suggesting that there is little surface amorphous region. A compressive strain was measured in the Cd-Se bond length that increases with decreasing particle size being 0.5% with respect to bulk CdSe for the 2 nm diameter particles. This study demonstrates the size-dependent quantitative structural information that can be obtained even from very small nanoparticles using the PDF approach.

A. S. Masadeh; E. Bozin; C. L. Farrow; G. Paglia; P. Juhas; A. Karkamkar; M. G. Kanatzidis; S. J. L. Billinge

2007-04-10T23:59:59.000Z

418

Air quality investigations of the Sandia National Laboratories Sol se Mete Aerial Cable Facility  

Science Conference Proceedings (OSTI)

The air quality implications of the test and evaluation activities at the Sandia National Laboratories Sol se Mete Aerial Cable Facility are examined. All facets of the activity that affect air quality are considered. Air contaminants produced directly include exhaust products of rocket motors used to accelerate test articles, dust and gas from chemical explosives, and exhaust gases from electricity generators in the test arenas. Air contaminants produced indirectly include fugitive dust and exhaust contaminants from vehicles used to transport personnel and material to the test area, and effluents produced by equipment used to heat the project buildings. Both the ongoing program and the proposed changes in the program are considered. Using a reliable estimate of th maximum annual testing level, the quantities of contaminants released by project activities ar computed either from known characteristics of test items or from EPA-approved emission factors Atmospheric concentrations of air contaminants are predicted using EPA dispersion models. The predicted quantities and concentrations are evaluated in relation to Federal, New Mexico, an Bernalillo County air quality regulations and the human health and safety standards of the American Conference of Governmental Industrial Hygienists.

Gutman, W.M.; Silver, R.J. [New Mexico State Univ., Las Cruces, NM (United States). Physical Science Lab.

1994-12-01T23:59:59.000Z

419

Environmental, health and safety issues related to commercializing CuInSe{sub 2}-based photovoltaics  

DOE Green Energy (OSTI)

Photovoltaics technology is rapidly evolving towards a new generation of low-cost thin film technologies. One of the most promising materials in this new generation is copper indium selenide (CuInSe{sub 2} or CIS). As with any new material, successful commercialization of CIS photovoltaic (PV) technology will require attention to environmental, health and safety issues, including consideration of the sources, usage, and end-of-product-life disposal and/or recycling of the constituent materials. This work focuses on three specific environmental, health and safety (EH and S) issues related to CIS PV: (1) economics are analyzed to determine their impact on materials use and re-use; (2) Federal and California State environmental disposal and waste handling regulations are analyzed to evaluate their impact on PV module manufacturing and end-of-life module handling; and (3) the logistics and economics of product recycling and waste disposal by industries with comparable EH and S issues are examined to quantify the corresponding options available for handling, disposing of and/or recycling manufacturing by-products and end-of-life modules.

Eberspacher, C. [UNISUN, Newbury Park, CA (United States); Fthenakis, V.M.; Moskowtiz, P.D. [Brookhaven National Lab., Upton, NY (United States)

1996-07-01T23:59:59.000Z

420

ORIGINAL PAPER Characterization of CdSe nanocrystals coated with amphiphiles. A capillary electrophoresis study  

E-Print Network (OSTI)

# The Author(s) 2011. This article is published with open access at Springerlink.com Abstract We have synthesized CdSe nanocrystals (NCs) possessing a trioctylphosphine surface passivation layer and modified with amphiphilic molecules to form a surface bilayer. The NCs covered with single amphiphiles are not stable in aqueous solution, but a mixed amphiphilic system is shown to provide stability in solution over several months. The solutions of the modified NCs were characterized by UV-Vis absorbance, photoluminescence, and transmissionelectronmicroscopy. An electrophoretic study revealed two operational modes. The first relies on the enrichment of NCs using a micellar plug as a tool. The accumulation of NCs at the plug-electrolyte buffer interface results in a sharp peak. By controlling the electrophoretic conditions, nanocrystals were forced to exit a micellar plug into an electrolyte buffer. We conclude that a system consisting of modified nanocrystals and a micellar plug can act as a mixed pseudomicellar system, where modified nanocrystals play theroleofpseudomicelles. Electronic supplementary material The online version of this article (doi:10.1007/s00604-011-0727-8) contains supplementary material, which is available to authorized users.

S?awomir Oszwa?dowski; Katarzyna Zawistowska-gibu?a; Kenneth P. Roberts; S. Oszwa?dowski; K. Zawistowska-gibu?a; K. P. Roberts

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Performance Characterization and Remedy of Experimental CuInGaSe2 Mini-Modules: Preprint  

DOE Green Energy (OSTI)

We employed current-voltage (I-V), quantum efficiency (QE), photoluminescence (PL), electroluminescence (EL), lock-in thermography (LIT), and (electrochemical) impedance spectroscopy (ECIS) to complementarily characterize the performance and remedy for two pairs of experimental CuInGaSe2 (CIGS) mini-modules. One pair had the three scribe-lines (P1/P2/P3) done by a single pulse-programmable laser, and the other had the P2/P3 lines by mechanical scribe. Localized QE measurements for each cell strip on all four mini-modules showed non-uniform distributions that correlated well with the presence of performance-degrading strips or spots revealed by PL, EL, and LIT imaging. Performance of the all-laser-scribed mini-modules improved significantly by adding a thicker Al-doped ZnO layer and reworking the P3 line. The efficiency on one of the all-laser-scribed mini-modules increased notably from 7.80% to 8.56% after the performance-degrading spots on the side regions along the cell array were isolated by manual scribes.

Pern, F. J.; Yan, F.; Mansfield, L.; Glynn, S.; Rekow, M.; Murion, R.

2011-07-01T23:59:59.000Z

422

Processing approach towards the formation of thin-film Cu(In,Ga)Se2  

DOE Patents (OSTI)

A two-stage method of producing thin-films of group IB-IIIA-VIA on a substrate for semiconductor device applications includes a first stage of depositing an amorphous group IB-IIIA-VIA precursor onto an unheated substrate, wherein the precursor contains all of the group IB and group IIIA constituents of the semiconductor thin-film to be produced in the stoichiometric amounts desired for the final product, and a second stage which involves subjecting the precursor to a short thermal treatment at 420.degree. C.-550.degree. C. in a vacuum or under an inert atmosphere to produce a single-phase, group IB-III-VIA film. Preferably the precursor also comprises the group VIA element in the stoichiometric amount desired for the final semiconductor thin-film. The group IB-IIIA-VIA semiconductor films may be, for example, Cu(In,Ga)(Se,S).sub.2 mixed-metal chalcogenides. The resultant supported group IB-IIIA-VIA semiconductor film is suitable for use in photovoltaic applications.

Beck, Markus E. (Falkensee, DE); Noufi, Rommel (Golden, CO)

2003-01-01T23:59:59.000Z

423

Growth of undoped and chromium-doped CdSxSe1-x crystals by the physical vapor transport method  

Science Conference Proceedings (OSTI)

Chromium-doped CdSe is one of the host materials being considered for solid-state tunable mid-infrared (IR) lasers. Alloying CdSe with CdS allows the increase of the thermal conductivity of the crystal (for CdS the thermal conductivity is a factor of ... Keywords: Cr2+:CdSSe, photoluminescence, physical vapor transport, tunable mid-IR solid-state lasers

U. N. Roy; Y. Cui; C. Barnett; K.-T. Chen; A. Burger; Jonathan T. Goldstein

2002-07-01T23:59:59.000Z

424

Improved selenization procedure to obtain CuInSe{sub 2} thin films from sequentially electrodeposited precursors  

Science Conference Proceedings (OSTI)

A new approach for CuInSe{sub 2} formation by sequential electrodeposition of Cu and In-Se layers and subsequent heat-treatment with elemental selenium in Ar and Ar + H{sub 2} flows is presented. The nature of the precursors and their evolution as a function of the selenization parameters have been studied by X-ray diffraction and X-ray photoelectron spectroscopy analysis. Sample temperature, Se-source temperature, and H{sub 2}/Ar volume ratio in the flow were the subject for optimization. A sample temperature above 400 C is needed to obtain single-phase CuInSe{sub 2} films. An increase in the film crystallinity has been reached by maintaining the Se-source temperature above 400 C. The introduction of H{sub 2} in the selenizing atmosphere has proven to be unsuitable, H{sub 2}Se formation must be avoided because it is more poisonous and less reactive than the elemental selenium vapor.

Guillen, C.; Herrero, J. [CIEMAT, Madrid (Spain). Inst. de Energias Renovables

1996-02-01T23:59:59.000Z

425

Large single crystal quaternary alloys of IB-IIIA-Se/sub 2/ and methods of synthesizing the same  

DOE Patents (OSTI)

New alloys of Cu/sub x/Ag/sub (1-x)/InSe/sub 2/ (where x ranges between 0 and 1 and preferably has a value of about 0.75) and CuIn/sub y/Ga/sub (1-y)/Se/sub 2/ (where y ranges between 0 and 1 and preferably has a value of about 0.90) in the form of single crystals with enhanced structure perfection, which crystals are substantially free of fissures, are disclosed. Processes are disclosed for preparing the new alloys of Cu/sub x/Ag/sub (1-x)/InSe/sub 2/. The process includes placing stoichiometric quantities of a Cu, Ag, In, and Se reaction mixture or stoichiometric quantities of a Cu, In, Ga, and Se reaction mixture in a refractory crucible in such a manner that the reaction mixture is surrounded by B/sub 2/O/sub 3/, placing the thus loaded crucible in a chamber under a high pressure atmosphere of inert gas to confine the volatile Se to the crucible, and heating the reaction mixture to its melting point. The melt can then be cooled slowly to form, by direct solidification, a single crystal with enhanced structure perfection, which crystal is substantially free of fissures.

Ciszek, T.F.

1986-07-15T23:59:59.000Z

426

Large single crystal quaternary alloys of IB-IIIA-SE.sub.2 and methods of synthesizing the same  

DOE Patents (OSTI)

New alloys of Cu.sub.x Ag.sub.(1-x) InSe.sub.2 (where x ranges between 0 and 1 and preferably has a value of about 0.75) and CuIn.sub.y Ga.sub.(1-y) Se.sub.2 (where y ranges between 0 and 1 and preferably has a value of about 0.90) in the form of single crystals with enhanced structure perfection, which crystals are substantially free of fissures are disclosed. Processes are disclosed for preparing the new alloys of Cu.sub.x Ag.sub.(1-x) InSe.sub.2. The process includes placing stoichiometric quantities of a Cu, Ag, In, and Se reaction mixture or stoichiometric quantities of a Cu, In, Ga, and Se reaction mixture in a refractory crucible in such a manner that the reaction mixture is surrounded by B.sub.2 O.sub.3, placing the thus loaded crucible in a chamber under a high pressure atmosphere of inert gas to confine the volatile Se to the crucible, and heating the reaction mixture to its melting point. The melt can then be cooled slowly to form, by direct solidification, a single crystal with enhanced structure perfection, which crystal is substantially free of fissures.

Ciszek, Theodore F. (Evergreen, CO)

1988-01-01T23:59:59.000Z

427

Determination of Grain Boundary Charging in Cu(In,Ga)Se2 Thin Films: Preprint  

DOE Green Energy (OSTI)

Surface potential mapping of Cu(In,Ga)Se2 (CIGS) thin films using scanning Kelvin probe force microscopy (SKPFM) aims to understand the minority-carrier recombination at the grain boundaries (GBs) of this polycrystalline material by examining GB charging, which has resulted in a number of publications. However, the reported results are highly inconsistent. In this paper, we report on the potential mapping by measuring wide-bandgap or high-Ga-content films and by using a complementary atomic force microscopy-based electrical technique of scanning capacitance microscopy (SCM). The results demonstrate consistent, positively charged GBs on our high-quality films with minimal surface defects/charges. The potential image taken on a low-quality film with a 1.2-eV bandgap shows significantly degraded potential contrast on the GBs and degraded potential uniformity on grain surfaces, resulting from the surface defects/charges of the low-quality film. In contrast, the potential image on an improved high-quality film with the same wide bandgap shows significantly improved GB potential contrast and surface potential uniformity, indicating that the effect of surface defects is critical when examining GB charging using surface potential data. In addition, we discuss the effect of the SKPFM setup on the validity of potential measurement, to exclude possible artifacts due to improper SKPFM setups. The SKPFM results were corroborated by using SCM measurements on the films with a CdS buffer layer. The SCM image shows clear GB contrast, indicating different electrical impedance on the GB from the grain surface. Further, we found that the GB contrast disappeared when the CdS window layer was deposited after the CIGS film was exposed extensively to ambient, which was caused by the creation of CIGS surface defects by the ambient exposure.

Jiang, C. S.; Contreras, M. A.; Repins, I.; Moutinho, H. R.; Noufi, R.; Al-Jassim, M. M.

2012-06-01T23:59:59.000Z

428

Biological investigations of the Sandia National Laboratories Sol se Mete Aerial Cable Facility  

Science Conference Proceedings (OSTI)

This report provides results of a comprehensive biological field survey performed on the Sandia National Laboratories Aerial Cable Facility, at the east end of Kirtland Air Force Base (KAFB), Bernalillo County, New Mexico. This survey was conducted late September through October, 1991. ACF occupies a 440-acre tract of land withdrawn by the US Forest Service (USFS) for use by KAFB, and in turn placed under operational control of SNL by the Department of Energy (DOE). All land used by SNL for ACF is part of a 15,851-acre tract of land withdrawn by the US Forest Service. In addition, a number of different organizations use the 15,851-acre area. The project area used by SNL encompasses portions of approximately six sections (3,840 acres) of US Forest Service land located within the foothills of the west side of the Manzano Mountains (East Mesa). The biological study area is used by the KAFB, the US Department of Interior, and SNL. This area includes: (1) Sol se Mete Springs and Canyon, (2) East Anchor Access Road, (3) East Anchor Site, (4) Rocket Sled Track, (5) North Arena, (6) East Instrumentation Site and Access Road, (7) West Anchor Access Road, (8) West Anchor Site, (9) South Arena, (10) Winch Sites, (11) West Instrumentation Sites, (12) Explosive Assembly Building, (13) Control Building, (14) Lurance Canyon Road and vicinity. Although portions of approximately 960 acres of withdrawn US Forest Service land have been altered, only 700 acres have been disturbed by activities associated with ACF; approximately 2,880 acres consist of natural habitat. Absence of grazing by livestock and possibly native ungulates, and relative lack of human disturbance have allowed this area to remain in a more natural vegetative state relative to the condition of private range lands throughout New Mexico. This report evaluates threatened and endangered species found on ACF, as well as a comprehensive assessment of biological habitats.

Sullivan, R.M.

1994-10-01T23:59:59.000Z

429

Observation of Orbital Ordering and Jahn-Teller Distortions Supporting the Wigner-crystal Model in Highly Dopes Bi{1-x}Ca{x}MnO{3}  

SciTech Connect

We report on the experimental characterization of orbital ordering and the associated lattice distortions in highly doped Bi{sub 1-x}Ca{sub x}MnO{sub 3}. Resonant x-ray diffraction was used at the Mn L-edge for the direct observation of the ordered localized states, and at the Mn K-edge for the sensitivity to the distortions of the manganese-oxygen octahedra. The orbital ordering on Mn atoms was directly observed at x=0.69; the analysis and the numerical simulations of the K-edge spectra allow us to characterize the pattern of the distorted octahedra at x = 4/5. These observations support the Wigner-crystal-type model at both dopings; the bi-stripe model is ruled out at x = 0.69.

Grenier,S.; Kiryukhin, V.; Cheong, S.; Kim, B.; Hill, J.; Thomas, K.; Tonnerre, J.; Joly, Y.; Staub, U.; Scagnoli, V.

2007-01-01T23:59:59.000Z

430

Enhancement of magnetoresistance using CoFe/Ru/CoFe synthetic ferrimagnetic pinned layer in BiFeO{sub 3} based spin-valves  

SciTech Connect

SrTiO{sub 3} (100) sub/BiFeO{sub 3}/CoFe/Ru/CoFe/Cu/CoFe/Ta structure was prepared by a combination of chemical solution deposition and sputtering method, and followed by a systematical investigation for the structural, magnetic and magnetoresistance properties at room temperature (RT) as a function of CoFe and Ru thicknesses. It was revealed that introduction of synthetic CoFe/Ru/CoFe as a pinning layer increased the giant magentoresistance (MR) ratio to 8.3% at RT. This enhancement of MR ratio might be attributed to (i) the increase of pinning field, and (ii) suppression of the influence of the surface roughness of BiFeO{sub 3} by inserting the synthetic CoFe/Ru/CoFe layer.

Naganuma, Hiroshi; Kubota, Miho; Inami, Nobuhito; Kawada, Yuki; Oogane, Mikihiko; Ando, Yasuo [Department of Applied Physics, Graduate School of Engineering, Tohoku University, 6-6-05 Aoba Aramaki Aoba-ku, Sendai 980-8579 (Japan); Bae, In-Tae [Small Scale Systems Integration and Packaging Center, State University of New York at Binghamton, Binghamton, New York 13902 (United States); Miyazaki, Takamichi [Tohoku University, Department of Instrumental Analysis, 6-6-11 Aoba, Aramaki, Aoba, Sendai 980-8579 (Japan); Mizukami, Shigemi [WPI Advanced Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Han, X. F. [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2012-08-13T23:59:59.000Z

431

Calculations of Branching Ratios for Radiative-Capture, One-Proton, and Two-Neutron Channels in the Fusion Reaction $^{209}$Bi+$^{70}$Zn  

E-Print Network (OSTI)

We discuss the possibility of the non-one-neutron emission channels in the cold fusion reaction $^{70}$Zn + $^{209}$Bi to produce the element Z=113. For this purpose, we calculate the evaporation-residue cross sections of one-proton, radiative-capture, and two-neutron emissions relative to the one-neutron emission in the reaction $^{70}$Zn + $^{209}$Bi. To estimate the upper bounds of those quantities, we vary model parameters in the calculations, such as the level-density parameter and the height of the fission barrier. We conclude that the highest possibility is for the 2n reaction channel, and its upper bounds are 2.4$%$ and at most less than 7.9% with unrealistic parameter values, under the actual experimental conditions of [J. Phys. Soc. Jpn. {\\bf 73} (2004) 2593].

Takatoshi Ichikawa; Akira Iwamoto

2010-12-20T23:59:59.000Z

432

Calculations of Branching Ratios for Radiative-Capture, One-Proton, and Two-Neutron Channels in the Fusion Reaction $^{209}$Bi+$^{70}$Zn  

E-Print Network (OSTI)

We discuss the possibility of the non-one-neutron emission channels in the cold fusion reaction $^{70}$Zn + $^{209}$Bi to produce the element Z=113. For this purpose, we calculate the evaporation-residue cross sections of one-proton, radiative-capture, and two-neutron emissions relative to the one-neutron emission in the reaction $^{70}$Zn + $^{209}$Bi. To estimate the upper bounds of those quantities, we vary model parameters in the calculations, such as the level-density parameter and the height of the fission barrier. We conclude that the highest possibility is for the 2n reaction channel, and its upper bounds are 2.4$%$ and at most less than 7.9% with unrealistic parameter values, under the actual experimental conditions of [J. Phys. Soc. Jpn. {\\bf 73} (2004) 2593].

Ichikawa, Takatoshi; 10.1143/JPSJ.79.074201

2010-01-01T23:59:59.000Z

433

Composites of Bi{sub 2-x}Sb{sub x}Te{sub 3} nanocrystals and fullerene molecules for thermoelectricity  

SciTech Connect

New nanocomposite thermoelectric material composed from nanocrystallites of Bi-Sb-Te alloys covered by C{sub 60} molecules has been synthesized and studied. An increase of fullerene content leads to the growth of hole concentration in p-type materials and reduction of electron concentration in n-type materials. The fullerene molecules provide additional scattering of phonons reducing lattice heat conductivity. Reduction of heat conductivity exceeds the reduction of electrical conductivity for fullerene content less than 0.5 volume % and essential enhances the thermoelectric figure of merit. The maximum value of thermoelectric figure of merit equals to 1.17 at 450 K was observed in Bi{sub 0.5}Sb{sub 1.5}Te{sub 3} composite containing 0.5 volume % C{sub 60} molecules. The experimental results were analyzed in a frame of the model based on the Boltzmann equation. The analysis considers light and heavy electrons and holes and accounts the intervalley scattering of charge carriers. The calculations of the kinetic coefficients shows that the improvement of the thermoelectric figure of merit originates from the reduction of the lattice heat conductivity caused by fullerene molecules. The dependencies of the thermoelectric figure of merit on the acceptor concentration were calculated. - Graphical abstract: New nanocomposite thermoelectric material composed from nanocrystallites of Bi-Sb-Te alloys covered by C{sub 60} molecules has been synthesized and studied. An increase of fullerene content leads to the growth of hole concentration in p-type materials and reduction of electron concentration in n-type materials. The fullerene molecules provide additional scattering of phonons reducing lattice heat conductivity and enhances the thermoelectric figure of merit. The maximum value of thermoelectric figure of merit equal to 1.17 at 450 K was observed in Bi{sub 0.5}Sb{sub 1.5}Te{sub 3} composite containing 0.5 volume % fullerene molecules. Simulations of thermoelectric properties were made in frame of four bands, 12 valleys Boltzmann equation approach. Simulated and measured temperature dependencies of thermoelectric properties were compared to get unknown model parameters. These parameters were used to calculate dependencies of thermoelectric properties on acceptor concentration. Calculated dependencies of thermoelectric figure of merit on acceptor concentration are presented in the figure for p-type composites with 0 vol.% C{sub 60} (solid lines) and 0.5 vol.% C{sub 60} (dashed lines). Highlights: Black-Right-Pointing-Pointer C{sub 60} doping of Bi-Sb-Te has acceptor effect. Black-Right-Pointing-Pointer Fullerene molecules prevent recrystallization in Bi-Sb-Te nanocomposites. Black-Right-Pointing-Pointer C{sub 60} in Bi-Sb-Te nanocomposites essentially reduces lattice thermal conductivity. Black-Right-Pointing-Pointer Thermoelectric figure of merit in nanocomposite C{sub 60}-Bi-Sb-Te enhanced.

Kulbachinskii, V.A., E-mail: kulb@mig.phys.msu.ru [M.V. Lomonosov Moscow State University, Faculty of Physics, Leninskie Gory 1-3, Moscow 119991 GSP-1 (Russian Federation); Kytin, V.G. [M.V. Lomonosov Moscow State University, Faculty of Physics, Leninskie Gory 1-3, Moscow 119991 GSP-1 (Russian Federation)] [M.V. Lomonosov Moscow State University, Faculty of Physics, Leninskie Gory 1-3, Moscow 119991 GSP-1 (Russian Federation); Popov, M.Yu.; Buga, S.G.; Stepanov, P.B.; Blank, V.D. [Technological Institute for Superhard and Novel Carbon Materials, Troitsk, Moscow Region 142190 (Russian Federation)] [Technological Institute for Superhard and Novel Carbon Materials, Troitsk, Moscow Region 142190 (Russian Federation)

2012-09-15T23:59:59.000Z

434

Experimental and Computer Simulation Study of the Radionuclides Produced in Thin Bi-209 Targets by 130 MeV and 1.5 GeV Protons  

E-Print Network (OSTI)

The results of experimental and computer simulation studies of the yields of residual product nuclei in Bi-209 thin targets irradiated by 130 MeV and 1.5 GeV protons are presented. The yields were measured by direct high-precision gamma-spectrometry. The gamma-spectrometer resolution was 1.8 keV in the 1332 keV line. The gamma-spectra were processed by the ASPRO code. The gamma-lines were identified, and the cross sections defined, by the SIGMA code using the GDISP radioactive database. The process was monitored by the Al-27(p,x)Na-24 reaction. Results are presented for comparisons between the 209-Bi(p,x) reaction yields obtained experimentally and simulated by the HETC, GNASH, LAHET, INUCL, CEM95, CASCADE, and ALICE codes.

Yu. E. Titarenko; O. V. Shvedov; M. M. Igumnov; R. Michel; S. G. Mashnik; E. I. Karpikhin; V. D. Kazaritsky; V. F. Batyaev; A. B. Koldobsky; V. M. Zhivun; A. N. Sosnin; R. E. Prael; M. B. Chadwick; T. A. Gabriel; M. Blann

1997-09-25T23:59:59.000Z

435

The Structural Transition Behavior of CdSe/ZnS Core/shell Quantum Dots under High Pressure  

Science Conference Proceedings (OSTI)

The structural phase transition of CdSe/ZnS core/shell quantum dots (QDs) has been studied by in situ angle-dispersive X-ray diffraction under high pressure up to 53.6?GPa. The CdSe core transforms from wurtzite to rock-salt structure near 6.3?GPa and then to Cmcm or distorted Cmcm structure probably occurs at 45.1?GPa which has not been observed in CdSe nanomaterials before. The critical pressure from wurtzite to rock-salt and the bulk modulus of rock-salt phase are much higher than those for bulky and uncapped nanoparticle CdSe. The released sample can be kept in rock-salt phase for a certain time, verified by photoluminescence (PL) spectra, quite different from the reversible transition for pure CdSe. A reasonable interpretation of the experimental phenomena is given by comparing the bulk modulus of the core and shell and studying the stress sate of the core after decompression. Our study suggests that capping a hard shell is an effective approach to quench the high pressure phase of nanomaterial with a reversible phase transition.

Z Li; L Wang; B Liu; J Wang; B Liu; Q Li; B Zou; T Cui; Y Meng; H Mao

2011-12-31T23:59:59.000Z

436

High-resolution angle-resolved photoemission studies of high Tc superconductor Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8  

SciTech Connect

An angle-resolved photoemission study of the normal and superconducting states in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} was performed. Measurements in the normal state show bands dispersing through the Fermi level from at least 350 meV below E{sub F}. The Fermi level crossings are consistant with local-density band calculation, including a point calculated to be of Bi-O character. Additional measurements were made where bands crossed the Fermi level between 100 and 250K, along with measurements on an adjacent Pt foil. The Fermi edges of both materials agree to within the noise. Below the Fermi level, the spectra show correlation effects on the form of an increased effective mass. The shape of the spectra can be explained by a lifetime-broadened photohole and secondary electrons. The effective inverse photohole lifetime is linear in energy. A superconducting gap has been measured at a number of points where there is density at the Fermi level in the normal state. By proper modeling, a gap of 24 meV was obtained for all these points, including points of Cu-O and Bi-O character respectively, according to band calculation. The lack of gap anisotropy in the basal plane suggests that pinning in this material is not d-wave pairing.

Liu, Rong.

1990-09-21T23:59:59.000Z

437

An X-ray diffraction study of pressure-induced phase transitions in Bi{sub 2}MoO{sub 6}  

SciTech Connect

Synchrotron based X-ray diffraction through a diamond anvil cell was used to determine the equations of state and pressure-induced phase transitions in Bi{sub 2}MoO{sub 6}. It was observed that Bi{sub 2}MoO{sub 6} undergoes a phase transformation at {approx}6.8 GPa. The high-pressure phase can be indexed to the orthorhombic structure and the transition is reversible on decompression from {approx}47 GPa. The bulk moduli of the low and high-pressure phases were calculated, while holding K Prime =4, to be: K=51{+-}1 GPa and K=141.5 {+-}0.1 GPa, respectively. - Graphical abstract: The material Bi{sub 2}MoO{sub 6} was placed inside a diamond anvil cell and then studied under high pressure at beamline X17C of the National Synchrotron Light source. X-ray diffraction data was analyzed using the Rietveld method. Highlights: Black-Right-Pointing-Pointer A high-pressure study of bismuth molybdate was performed. Black-Right-Pointing-Pointer Pressure-induced phase transitions were observed. Black-Right-Pointing-Pointer The low pressure phase bulk modulus was calculated to be K=51{+-}1 GPa. Black-Right-Pointing-Pointer The high pressure phase bulk modulus was calculated to be B=141.5{+-}0.1 GPa.

Scott, Paul R., E-mail: prscott933@hotmail.com [Department of Physics, University of Missouri-Kansas City, 5110 Rockhill Road, MO 64110 (United States); Crow, J.A. [Department of Physics, University of Missouri-Kansas City, 5110 Rockhill Road, MO 64110 (United States)] [Department of Physics, University of Missouri-Kansas City, 5110 Rockhill Road, MO 64110 (United States); Maczka, M. [Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PO Box 1410, 50-950 Wroclaw 2 (Poland)] [Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PO Box 1410, 50-950 Wroclaw 2 (Poland); Kruger, M.B. [Department of Physics, University of Missouri-Kansas City, 5110 Rockhill Road, MO 64110 (United States)] [Department of Physics, University of Missouri-Kansas City, 5110 Rockhill Road, MO 64110 (United States)

2012-10-15T23:59:59.000Z

438

Electroforming of Bi(1-x)Sb(x) nanowires for high-efficiency micro-thermoelectric cooling devices on a chip.  

DOE Green Energy (OSTI)

Active cooling of electronic systems for space-based and terrestrial National Security missions has demanded use of Stirling, reverse-Brayton, closed Joule-Thompson, pulse tube and more elaborate refrigeration cycles. Such cryocoolers are large systems that are expensive, demand large powers, often contain moving parts and are difficult to integrate with electronic systems. On-chip, solid-state, active cooling would greatly enhance the capabilities of future systems by reducing the size, cost and inefficiencies compared to existing solutions. We proposed to develop the technology for a thermoelectric cooler capable of reaching 77K by replacing bulk thermoelectric materials with arrays of Bi{sub 1-x}Sb{sub x} nanowires. Furthermore, the Sandia-developed technique we will use to produce the oriented nanowires occurs at room temperature and can be applied directly to a silicon substrate. Key obstacles include (1) optimizing the Bi{sub 1-x}Sb{sub x} alloy composition for thermoelectric properties; (2) increasing wire aspect ratios to 3000:1; and (3) increasing the array density to {ge} 10{sup 9} wires/cm{sup 2}. The primary objective of this LDRD was to fabricate and test the thermoelectric properties of arrays of Bi{sub 1-x}Sb{sub x} nanowires. With this proof-of-concept data under our belts we are positioned to engage National Security systems customers to invest in the integration of on-chip thermoelectric coolers for future missions.

Overmyer, Donald L.; Webb, Edmund Blackburn, III (,; ); Siegal, Michael P.; Yelton, William Graham

2006-11-01T23:59:59.000Z

439

Photoconductivity and luminescence of CuInSe{sub 2} single crystals at a high level of optical excitation  

Science Conference Proceedings (OSTI)

The luminance-current and spectral characteristics of photoluminescence of the CuInSe{sub 2} single crystals are studied. The superlinear portion of the excitation-intensity dependence of photoconductivity at low excitation intensities in compensated p-CuInSe{sub 2} crystals is explained on the basis of a recombination model. The emission band that peaked at 0.98 eV in the n-CuInSe{sub 2} photoluminescence spectrum corresponds to radiative recombination of electrons at the donor level with a depth of 0.04 eV. The maximum in the band intensity corresponds to the energy gap between the trap level and the valence band.

Guseinov, A. G.; Salmanov, V. M.; Mamedov, R. M. [Baku State University (Azerbaijan)], E-mail: rovshan63@rambler.ru

2006-04-15T23:59:59.000Z

440

Electrochemical photovoltaic cells CdSe thin film electrodes. Quarterly progress report No. 1, June-August 1979  

DOE Green Energy (OSTI)

The overall objective of this program is to obtain AM1 efficiencies in the range of 10% with electrochemical cells utilizing thin film electrodes. The system currently being investigated is the CdSe/aqueous sulfide-polysulfide system. This report presents the results to date of the initial CdSe deposition parameter study. The key finding has been that the ratio of Se and Cd in the as deposited film has marked effect on the film's chemical, microstructural, optical, and electrical properties as well as I-V performance. In addition, it has been found that electrolyte concentration and compostion can have a strong effect on the I-V performance of a given electrode.

Russak, M.A.; Creter, C.

1979-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "bi uup se" from the National Library of EnergyBeta (NLEBeta).
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441

Molecular beam epitaxy growth of PbSe on Si (211) using a ZnTe buffer layer  

Science Conference Proceedings (OSTI)

The authors report the results of successful growth of single crystalline PbSe on Si (211) substrates with ZnTe as a buffer layer by molecular beam epitaxy. Single crystalline PbSe with (511) orientation was achieved on ZnTe/Si (211), as evidenced by RHEED patterns indicative of 2 dimensional (2D) growth, x ray diffraction rocking curves with a full width at half maximum as low as 153 arc sec and mobility as large as 1.1x10{sup 4}cm{sup 2}V{sup -1}s{sup -1} at 77 K. Cross hatch patterns were found on the PbSe(511) surface in Nomarski filtered microscope images suggesting the presence of a surface thermal strain relaxation mechanism, which was confirmed by Fourier transformed high resolution transmission electron microscope images.

Wang, X. J.; Chang, Y.; Hou, Y. B.; Becker, C. R.; Kodama, R.; Aqariden, F.; Sivananthan, S. [Microphysics Laboratory, Physics Department, University of Illinois at Chicago, Illinois 60607 (United States); Microphysics Laboratory, Physics Department, University of Illinois at Chicago, Illinois 60607 and Physics Department and Quantum Functional Semiconductor Research Center, Dongguk University 3-26, Seoul 100-715 (Korea, Republic of); Microphysics Laboratory, Physics Department, University of Illinois at Chicago, Illinois 60607 (United States); EPIR Technologies, Bolingbrook, Illinois 60440 (United States); Microphysics Laboratory, Physics Department, University of Illinois at Chicago, Illinois 60607 and EPIR Technologies, Bolingbrook, Illinois 60440 (United States)

2011-09-15T23:59:59.000Z

442

Growth and structure of epitaxial Pb{sub 1-x}Mn{sub x}Se(Ga) films  

Science Conference Proceedings (OSTI)

The growth and structure of Pb{sub 1-x}Mn{sub x}Se (Ga) (N{sub Ga} = 0.8 at %) films with thicknesses of 0.3-0.5 {mu}m, grown on single-crystal PbSe{sub 1-x}S{sub x} (100) substrates by molecular-beam epitaxy, have been studied. It is established that films grow in a face-centered cubic lattice with the (100) orientation, reproducing the substrate orientation. The optimal conditions for obtaining photosensitive epitaxial films with perfect crystal structure are determined (W{sub 1/2} = 70-80'').

Nuriyev, I. R., E-mail: mhagiyev@yahoo.com; Gadzhiyev, M. B.; Sadigov, R. M. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2009-03-15T23:59:59.000Z

443

First Direct Double- Decay Q-Value Measurement of 82Se in Support of Understanding the Nature of the Neutrino  

Science Conference Proceedings (OSTI)

In anticipation of results from current and future double- decay studies, we report a measurement resulting in a 82Se double- decay Q value of 2997.9(3) keV, an order of magnitude more precise than the currently accepted value. We also present preliminary results of a calculation of the 82Se neutrinoless double- decay nuclear matrix element that corrects in part for the small size of the shell model single-particle space. The results of this work are important for designing next generation double- decay experiments and for the theoretical interpretations of their observations.

Lincoln, David L. [NSCL, Michigan State University, East Lansing; Holt, Jason D. [Technische Univ. Darmstadt/GSI/UTK/ORNL; Bollen, Georg [NSCL, Michigan State University, East Lansing; Brodeur, Maxime [NSCL, Michigan State University, East Lansing; Bustabad, Scott [NSCL, Michigan State University, East Lansing; Engel, Jonathan [University of North Carolina, Chapel Hill; Novario, Samuel J. [NSCL, Michigan State University, East Lansing; Redshaw, Matthew [NSCL, Michigan State Univ.,/Central Michigan Univ.-Mt. Pleasant; Ringle, Ryan [NSCL, Michigan State University, East Lansing; Schwarz, Stefan [NSCL, Michigan State University, East Lansing

2013-01-01T23:59:59.000Z

444

Investigations of CuInSe2 Thin Films and Contacts: Annual Subcontract Report, 1 January 1990 - 28 February 1991  

DOE Green Energy (OSTI)

This report describes research into electrical contacts for copper indium diselenide (CulnSe2) polycrystalline thin films used for solar cell applications. Molybdenum contacts have historically been the most promising for heterojunction solar cells. This program studied contact stability by investigating thermally induced bilayer reactions between molybdenum and copper, indium, and selenium. Because selenization is widely used to fabricate CulnSe2 thin films for photovoltaic cells, a second part of the program investigated how the morphologies, phases, and reactions of pre-selenization Cu-In structures are affected by the deposition process and heat treatments.

Nicolet, M. A.

1991-10-01T23:59:59.000Z

445

Polarization-Driven Stark Shifts in Quantum Dot Luminescence from Single CdSe/oligo-PPV Nanoparticles  

Science Conference Proceedings (OSTI)

We demonstrate polarization-induced spectral shifts and associated linearly polarized absorption and emission in single CdSe/oligo-(phenylene vinylene) (CdSe/OPV) nanoparticles. A mechanism for these observations is presented in which charge separation from photoexcited ligands results in a significant Stark distortion of the quantum dot electron/hole wavefunctions. This distortion results in an induced linear polarization and an associated red shift in band-edge photoluminescence. These studies suggest the use of single quantum dots as local charge mobility probes.

Early, K. T.; Sudeep, P. K.; Emrick, Todd; Barnes, M. D.

2010-01-01T23:59:59.000Z

446

Chemically deposited Bi[sub 2]S[sub 3]-Cu[sub x]S solar control coatings  

SciTech Connect

Solar control characteristics are described for chemically deposited thin film coatings consisting of an initial layer of Bi[sub 2]S[sub 3] film of [approximately] 0.05 [mu]m thickness deposited at room temperature (25 C) for 45-76 min from baths containing bismuth nitrate, triethanolamine (TEA) and thioacetamide and a Cu[sub x]S thin film of 0.1-0.25 [mu]m thickness deposited either at room temperature, for 3-6 h, or at 50 C, for 1-2 h using baths consisting of copper(II) chloride, TEA, thioureau (TU), NaOH and NH[sub 3](aq). Air annealing of these films at 150 C for 30 min yield well-desired solar control characteristics: sheet resistance in a range which signifies a low thermal emittance; integrated transmittance of 15-32% in the visible region and 11-22% in the near-infrared region; integrated transmittance of [approximately]13-25% for solar radiation and a range of shades in reflected daylight. Using a mathematical model, the solar control performance of these coatings in a 6 mm sheet glass is predicted for an architectural window in a tropical location showing that solar radiation rejection of [approximately] 50% is obtainable for a integrated transmittance of 17%.

Nair, M.T.S.; Alvarez-Garcia, G.; Estrada-Gasca, C.A.; Nair, P.K. (Univ. Nacional Autonoma de Mexico, Morelos (Mexico))

1993-01-01T23:59:59.000Z

447

Development of a modular, bi-directional power inverter for photovoltaic applications. Annual technical progress report, August 1995--August 1996  

DOE Green Energy (OSTI)

The goal of this research and development contract is to develop and prototype for manufacturing a modular, bi-directional power inverter for photovoltaic applications. This modular inverter will be used as building block for larger inverters by connecting in parallel (for higher power) or in series (for higher AC voltage) or both. The modular inverter will be capable of being interconnected for single, split and three phase configurations for both 60 hertz (domestic) and 50 hertz (international) applications. The design will also construction of units with different DC input voltages and AC output voltages to further satisfy various application and market requirements. By standardizing on a single {open_quotes}building block{close_quotes} inverter module, the need to build multiple models and sizes for different application can be avoided. The higher volume of a single design will allow improved manufacturing and will result in higher reliability by reducing low volume will allow improved manufacturing will result in higher reliability by reducing low volume modifications. The result will be lower cost and improved performance of photovoltaic systems.

Freitas, C. [Trace Engineering Company, Inc., Arlington, WA (United States)

1997-08-01T23:59:59.000Z

448

Growth of Bi doped cadmium zinc telluride single crystals by Bridgman oscillation method and its structural, optical, and electrical analyses  

Science Conference Proceedings (OSTI)

The II-VI compound semiconductor cadmium zinc telluride (CZT) is very useful for room temperature radiation detection applications. In the present research, we have successfully grown Bi doped CZT single crystals with two different zinc concentrations (8 and 14 at. %) by the Bridgman oscillation method, in which one experiment has been carried out with a platinum (Pt) tube as the ampoule support. Pt also acts as a cold finger and reduces the growth velocity and enhances crystalline perfection. The grown single crystals have been studied with different analysis methods. The stoichiometry was confirmed by energy dispersive by x-ray and inductively coupled plasma mass spectroscopy analyses and it was found there is no incorporation of impurities in the grown crystal. The presence of Cd and Te vacancies was determined by cathodoluminescence studies. Electrical properties were assessed by I-V analysis and indicated higher resistive value (8.53x10{sup 8} {Omega} cm) for the crystal grown with higher zinc concentration (with Cd excess) compare to the other (3.71x10{sup 5} {Omega} cm).

Carcelen, V.; Rodriguez-Fernandez, J.; Dieguez, E. [Dpto. Fisica de Materiales, Laboratorio de Crecimiento de Cristales, Facultad de Ciencias, Univ. Autonoma de Madrid, 28049 Cantoblanco (Spain); Hidalgo, P. [Dpto. Fisica de Materiales, Facultad de Ciencias Fisicas, Univ. Complutense de Madrid, 28040 Madrid (Spain)

2010-05-15T23:59:59.000Z

449

Phonon conduction in PbSe, PbTe, and PbTe1?xSex from first-principles calculations  

E-Print Network (OSTI)

We apply first-principles calculations to lead selenide (PbSe) and lead telluride (PbTe) and their alloys (PbTe[subscript 1?x]Se[subscript x]), which are potentially good thermoelectric materials, to investigate their ...

Tian, Zhiting

450

Synthesis of CdSe -- TiO2 Nanocomposites and Their Applications to TiO2 Sensitized Solar Cells  

Science Conference Proceedings (OSTI)

CdSe-TiO{sub 2} nanocomposites were synthesized via aminolysis of Ti-oleate complexes in the presence of CdSe nanocrystals, and their application as sensitizers for TiO{sub 2} solar cells was investigated. The formation of CdSe-TiO{sub 2} nanocomposites was confirmed using transmission electron microscopy and Raman spectroscopy. The emission spectrum of