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1

CdTe/CdZnTe pixellated radiation detector.  

E-Print Network (OSTI)

??The work in this thesis is focused on the study of CdTe/CdZnTe pixellated detectors. During this research, three main aspects have been covered in the… (more)

Mohd Zain, Rasif

2015-01-01T23:59:59.000Z

2

Si, CdTe and CdZnTe radiation detectors for imaging applications.  

E-Print Network (OSTI)

??The structure and operation of CdTe, CdZnTe and Si pixel detectors based on crystalline semiconductors, bump bonding and CMOS technology and developed mainly at Oy… (more)

Schulman, Tom

2006-01-01T23:59:59.000Z

3

Characterization of CdZnTe ambient temperature detectors  

SciTech Connect

A great deal of interest has been generated in the use of cadmium telluride (CdTe) and cadmium zinc telluride (CdZnTe) detectors for ambient temperature detection of radionuclides. The addition of zinc to CdTe provides several benefits that enhance the materials operational characteristics at ambient temperature. Recent movement in the industry is to produce larger volume detectors using CdZnTe without much known about the effects of larger geometry on performance. The purpose of this study is to get an idea of the relationship of detector performance to both area and thickness variations.

Lavietes, A.

1994-09-01T23:59:59.000Z

4

Reversible Modification of CdSe-CdS/ZnS Quantum Dot Fluorescence by Surrounding Ca2+  

E-Print Network (OSTI)

Reversible Modification of CdSe-CdS/ZnS Quantum Dot Fluorescence by Surrounding Ca2+ Ions Li Li (3-MPA) coated CdSe-CdS/ZnS core-multishell QDs when free Ca2+ ions were added to and subsequently removed from the QD solution. It was found that QD fluorescence intensity was reduced when Ca2+ ions were

Haviland, David

5

Photoluminescence study of the substitution of Cd by Zn during the growth by atomic layer epitaxy of alternate CdSe and ZnSe monolayers  

SciTech Connect

We present a study of the substitution of Cd atoms by Zn atoms during the growth of alternate ZnSe and CdSe compound monolayers (ML) by atomic layer epitaxy (ALE) as a function of substrate temperature. Samples contained two quantum wells (QWs), each one made of alternate CdSe and ZnSe monolayers with total thickness of 12 ML but different growth parameters. The QWs were studied by low temperature photoluminescence (PL) spectroscopy. We show that the Cd content of underlying CdSe layers is affected by the exposure of the quantum well film to the Zn flux during the growth of ZnSe monolayers. The amount of Cd of the quantum well film decreases with higher exposures to the Zn flux. A brief discussion about the difficulties to grow the Zn{sub 0.5}Cd{sub 0.5}Se ordered alloy (CuAu-I type) by ALE is presented.

Hernández-Calderón, I. [Physics Department,Cinvestav, Ave. IPN2508, 07360, México City, DF. (Mexico); Salcedo-Reyes, J. C. [Thin Films Group, Physics Department, Pontificia Universidad Javeriana, Cr. 7 No. 43-82, Ed. 53, Lab. 404, Bogotá, D.C. (Colombia)

2014-05-15T23:59:59.000Z

6

CdS and CdS/CdSe sensitized ZnO nanorod array solar cells prepared by a solution ions exchange process  

SciTech Connect

Graphical abstract: - Highlights: • CdS and CdS/CdSe quantum dots are assembled on ZnO nanorods by ion exchange process. • The CdS/CdSe sensitization of ZnO effectively extends the absorption spectrum. • The performance of ZnO/CdS/CdSe cell is improved by extending absorption spectrum. - Abstract: In this paper, cadmium sulfide (CdS) and cadmium sulfide/cadmium selenide (CdS/CdSe) quantum dots (QDs) are assembled onto ZnO nanorod arrays by a solution ion exchange process for QD-sensitized solar cell application. The morphology, composition and absorption properties of different photoanodes were characterized with scanning electron microscope, transmission electron microscope, energy-dispersive X-ray spectrum and Raman spectrum in detail. It is shown that conformal and uniform CdS and CdS/CdSe shells can grow on ZnO nanorod cores. Quantum dot sensitized solar cells based on ZnO/CdS and ZnO/CdS/CdSe nanocable arrays were assembled with gold counter electrode and polysulfide electrolyte solution. The CdS/CdSe sensitization of ZnO can effectively extend the absorption spectrum up to 650 nm, which has a remarkable impact on the performance of a photovoltaic device by extending the absorption spectrum. Preliminary results show one fourth improvement in solar cell efficiency.

Chen, Ling; Gong, Haibo; Zheng, Xiaopeng; Zhu, Min; Zhang, Jun [Key Laboratory of Inorganic Functional Materials in Universities of Shandong, School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong (China); Yang, Shikuan [Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802-6812 (United States); Cao, Bingqiang, E-mail: mse_caobq@ujn.edu.cn [Key Laboratory of Inorganic Functional Materials in Universities of Shandong, School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong (China)

2013-10-15T23:59:59.000Z

7

Effect of Zn, Mn, and Fe on Cd accumulation in phytoplankton ...  

Science Journals Connector (OSTI)

We examined the effect of important controlling factors (free ion concentrations of Cd, Zn, and Mn and Fe limitation of growth rate) on Cd accumulation by an ...

8

Point Defect Characterization in CdZnTe  

SciTech Connect

Measurements of the defect levels and performance testing of CdZnTe detectors were performed by means of Current Deep Level Transient Spectroscopy (I-DLTS), Transient Charge Technique (TCT), Current versus Voltage measurements (I-V), and gamma-ray spectroscopy. CdZnTe crystals were acquired from different commercial vendors and characterized for their point defects. I-DLTS studies included measurements of defect parameters such as energy levels in the band gap, carrier capture cross sections, and defect densities. The induced current due to laser-generated carriers was measured using TCT. The data were used to determine the transport properties of the detectors under study. A good correlation was found between the point defects in the detectors and their performance.

Gul,R.; Li, Z.; Bolotnikov, A.; Keeter, K.; Rodriguez, R.; James, R.

2009-03-24T23:59:59.000Z

9

Spectroscopic studies on Zn-doped CdS nanopowders prepared by simple coprecipitation method  

Science Journals Connector (OSTI)

A series of Zn-doped cadmium sulfide (CdS:Zn) nanopowders were prepared by a simple ... nanosize and cubic structure at room temperature. Doping with Zn in CdS does not lead to any structural phase ... the lattic...

H. Sekhar; D. Narayana Rao

2012-02-01T23:59:59.000Z

10

IR spectroscopy of lattice vibrations and comparative analysis of the ZnTe/CdTe quantum-dot superlattices on the GaAs substrate and with the ZnTe and CdTe buffer layers  

SciTech Connect

A comparative analysis of multiperiod ZnTe/CdTe superlattices with the CdTe quantum dots grown by molecular beam epitaxy on the GaAs substrate with the ZnTe and CdTe buffer layers is carried out. The elastic-stress-induced shifts of eigenfrequencies of the modes of the CdTe- and ZnTe-like vibrations of materials forming similar superlattices but grown on different buffer ZnTe and CdTe layers are compared. The conditions of formation of quantum dots in the ZnTe/CdTe superlattices on the ZnTe and CdTe buffer layers differ radically.

Kozyrev, S. P. [Russian Academy of Sciences, Lebedev Institute of Physics (Russian Federation)], E-mail: skozyrev@sci.lebedev.ru

2009-07-15T23:59:59.000Z

11

CdCl{sub 2} treatment related diffusion phenomena in Cd{sub 1?x}Zn{sub x}S/CdTe solar cells  

SciTech Connect

Utilisation of wide bandgap Cd{sub 1?x}Zn{sub x}S alloys as an alternative to the CdS window layer is an attractive route to enhance the performance of CdTe thin film solar cells. For successful implementation, however, it is vital to control the composition and properties of Cd{sub 1?x}Zn{sub x}S through device fabrication processes involving the relatively high-temperature CdTe deposition and CdCl{sub 2} activation steps. In this study, cross-sectional scanning transmission electron microscopy and depth profiling methods were employed to investigate chemical and structural changes in CdTe/Cd{sub 1?x}Zn{sub x}S/CdS superstrate device structures deposited on an ITO/boro-aluminosilicate substrate. Comparison of three devices in different states of completion—fully processed (CdCl{sub 2} activated), annealed only (without CdCl{sub 2} activation), and a control (without CdCl{sub 2} activation or anneal)—revealed cation diffusion phenomena within the window layer, their effects closely coupled to the CdCl{sub 2} treatment. As a result, the initial Cd{sub 1?x}Zn{sub x}S/CdS bilayer structure was observed to unify into a single Cd{sub 1?x}Zn{sub x}S layer with an increased Cd/Zn atomic ratio; these changes defining the properties and performance of the Cd{sub 1?x}Zn{sub x}S/CdTe device.

Kartopu, G., E-mail: giray.kartopu@glyndwr.ac.uk; Clayton, A. J.; Barrioz, V.; Lamb, D. A.; Irvine, S. J. C. [Centre for Solar Energy Research (CSER), Glynd?r University, OpTIC, St. Asaph Business Park, St. Asaph LL17 0JD (United Kingdom); Taylor, A. A. [Physics Department, Durham University, Durham DH1 3LE (United Kingdom)

2014-03-14T23:59:59.000Z

12

Relations between structural parameters and physical properties in CdTe and Cd0.96Zn0.04Te alloys  

E-Print Network (OSTI)

481 Relations between structural parameters and physical properties in CdTe and Cd0.96Zn0.04Te cristaux de CdTe et de Cd0,96Zn0,04Te, de densité de dislocations variant entre 5 x 104 et 6 x 105 cm-2. La and photoluminescence experiments were performed on several CdTe and Cd0.96Zn0.04Te crystals with dislocation density

Paris-Sud XI, Université de

13

Core-shell ITO/ZnO/CdS/CdTe nanowire solar cells  

SciTech Connect

Radial p-n junction nanowire (NW) solar cells with high densities of CdTe NWs coated with indium tin oxide (ITO)/ZnO/CdS triple shells were grown with excellent heterointerfaces. The optical reflectance of the devices was lower than for equivalent planar films by a factor of 100. The best efficiency for the NW solar cells was ??=?2.49%, with current transport being dominated by recombination, and the conversion efficiencies being limited by a back contact barrier (?{sub B}?=?0.52?eV) and low shunt resistances (R{sub SH}?

Williams, B. L.; Phillips, L.; Major, J. D.; Durose, K. [Stephenson Institute for Renewable Energy, University of Liverpool, Chadwick Building, Peach St., Liverpool L69 7ZF (United Kingdom); Taylor, A. A.; Mendis, B. G.; Bowen, L. [G. J. Russell Microscopy Facility, University of Durham, South Road, Durham DH1 3LE (United Kingdom)

2014-02-03T23:59:59.000Z

14

NONLINEAR OPTICAL EFFECTS IN ROTATIONALLY-TWINNED CRYSTALS: AN EVALUATION OF CdTe, ZnTe AND ZnSe  

E-Print Network (OSTI)

405 NONLINEAR OPTICAL EFFECTS IN ROTATIONALLY-TWINNED CRYSTALS: AN EVALUATION OF CdTe, ZnTe AND Zn une loi en N2. On discutera les avantages potentiels en optique non linéaire des cristaux de CdTe, Zn-spaced twin planes the enhancement is proportional to N2. A comparison is made between CdTe, ZnTe, and Zn

Boyer, Edmond

15

Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis  

E-Print Network (OSTI)

The electrochemical behavior of ZnTe and CdTe compound semiconductors dissolved in molten ZnCl[subscript 2] and equimolar CdCl[subscript 2]–KCl, respectively, was examined. In these melts dissolved Te is present as the ...

Osswald, Sebastian

16

Hybrid Electrochromic Fluorescent Poly(DNTD)/CdSe@ZnS Composite Films  

E-Print Network (OSTI)

Hybrid Electrochromic Fluorescent Poly(DNTD)/CdSe@ZnS Composite Films Huige Wei, Xingru Yan, Springdale, Arkansas 72764, United States ABSTRACT: Hybrid electrochromic poly(DNTD)/CdSe@ZnS quantum dots of an electrical current after the application of an appropriate electrode potential.15-17 The electrochromic

Guo, John Zhanhu

17

Photoluminescence properties of ZnS/CdS/ZnS quantum dot–quantum wells doped with Ag+ ions  

Science Journals Connector (OSTI)

Enhanced photoluminescence and postirradiation luminescence is reported from Ag+-doping ZnS/CdS/ZnS quantum dot–quantum wells (QDQWs)...2O/Heptane system, the size of a QDQW was estimated to be ~6 nm. Compared to...

Hua Qu; Lixin Cao; Wei Liu; Ge Su; Bohua Dong; Hui Zhai

2011-10-01T23:59:59.000Z

18

Carboxylic-containing copolymer as template to prepare CdS, ZnS and doped nanoparticles  

Science Journals Connector (OSTI)

CdS, CdS:Mn, ZnS, ZnS:Mn and ZnS: ... Average particle size, 2.5 nm for CdS nanoparticles, is deduced from UV-vis absorption ... observation of TEM. Characteristic emissions of the doping ions can be observed and...

Lingdong Sun; Bo Xu; Xuefeng Fu; Mingwen Wang…

2001-02-01T23:59:59.000Z

19

Chemical bath deposition of CdS thin films doped with Zn and Cu  

Science Journals Connector (OSTI)

Zn- and Cu-doped CdS thin films were deposited onto glass substrates...2 and CuCl2...were incorporated as dopant agents into the conventional CdS chemical bath in order to promote the CdS doping process. The effe...

A I OLIVA; J E CORONA; R PATIÑO; A I OLIVA-AVILÉS

2014-04-01T23:59:59.000Z

20

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

Science Journals Connector (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

Note: This page contains sample records for the topic "rg zn cd" 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

Efficient light emitting devices utilizing CdSe(ZnS) quantum dots in organic host matrices  

E-Print Network (OSTI)

We demonstrate efficient electroluminescence from thin film structures containing core-shell CdSe(ZnS) quantum dots dispersed in molecular organic host materials. In the most efficient devices, excitons are created on the ...

Coe-Sullivan, Seth (Seth Alexander)

2002-01-01T23:59:59.000Z

22

FINAL REPORT OF RESEARCH ON CuxS/ (Cd,Zn)S PHOTOVOLTAIC SOLAR ENERGY CONVERTERS 3/77 - 9/79  

E-Print Network (OSTI)

and (Cd,Zn)S/CuxS photovoltaic cells. The approach was tothe CuxS/(Cd,Zn)S photovoltaic cell in order to betterstudying CdS/CuxS photovoltaic cells, films prepared by the

Chin, B.L.

2013-01-01T23:59:59.000Z

23

Improving conversion efficiency of CdS quantum dots-sensitized TiO2 nanotube arrays by doping with Zn2+ and decorating with ZnO nanoparticles  

Science Journals Connector (OSTI)

Abstract The Zn-doped TiO2 nanotube arrays (TNTs) decorated with ZnO nanoparticles have been prepared via electrochemical anodization and immersing method. Furthermore, the CdS quantum dots (QDs) were deposited on the prepared Zn-doped TNTs-ZnO thin films by chemical bath deposition (CBD) method to fabricate the CdS QDs-sensitized Zn-doped TNTs-ZnO photoelectrodes. The nanostructure, morphology, optical properties and electrochemical properties of the CdS/Zn-doped TNTs-ZnO photoelectrode with comparison to those of the CdS/TNTs photoelectrodes were investigated. It has been found that the Zn-doped TNTs-ZnO photoelectrodes significantly increased the UV–vis light absorption of the CdS/Zn-doped TNTs-ZnO photoelectrodes and reduced the charge recombination at the surfaces of the CdS/Zn-doped TNTs-ZnO photoelectrodes. As a consequence, when the Zn-doped TNTs-ZnO film was adopted instead of the plain \\{TNTs\\} film, the light-chemical energy conversion efficiency of the CdS/Zn-doped TNTs-ZnO photoelectrode was much improved compared with the CdS/TNTs photoelectrode. A maximum energy conversion efficiency achieved for the CdS/Zn-doped TNTs-ZnO photoelectrode is 3.86%, which is a 17% improvement compared with the maximum energy conversion efficiency of 3.29% achieved for the CdS/TNTs photoelectrodes.

Chong Chen; Lei Wang; Fumin Li; Lanyu Ling

2014-01-01T23:59:59.000Z

24

DEVELOPMENT OF CdZnTe RADIATION DETECTORS  

SciTech Connect

Cadmium Zinc Telluride (CdZnTe or CZT) is a very attractive material for room-temperature semiconductor detectors because of its wide band-gap and high atomic number. Despite these advantages, CZT still presents some material limitations and poor hole mobility. In the past decade most of the developing CZT detectors focused on designing different electrode configurations, mainly to minimize the deleterious effect due to the poor hole mobility. A few different electrode geometries were designed and fabricated, such as pixelated anodes and Frisch-grid detectors developed at Brookhaven National Lab (BNL). However, crystal defects in CZT materials still limit the yield of detector-grade crystals, and, in general, dominate the detector's performance. In the past few years, our group's research extended to characterizing the CZT materials at the micro-scale, and to correlating crystal defects with the detector's performance. We built a set of unique tools for this purpose, including infrared (IR) transmission microscopy, X-ray micro-scale mapping using synchrotron light source, X-ray transmission- and reflection-topography, current deep level transient spectroscopy (I-DLTS), and photoluminescence measurements. Our most recent work on CZT detectors was directed towards detailing various crystal defects, studying the internal electrical field, and delineating the effects of thermal annealing on improving the material properties. In this paper, we report our most recent results.

BOLOTNIKOV, A.; CAMARDA, G.; HOSSAIN, A.; KIM, K.H.; YANG, G.; GUL, R.; CUI, Y.; AND JAMES, R.B.

2011-10-23T23:59:59.000Z

25

Photocurrent Spectroscopy of CdS/Plastic, CdS/Glass, and ZnTe/GaAs Hetero-pairs Formed with Pulsed-laser Deposition.  

E-Print Network (OSTI)

?? This dissertation presents photocurrent (PC) spectroscopy of thin-film cadmium sulfide (CdS) on plastic, CdS on glass, and zinc telluride (ZnTe) on gallium arsenide (GaAs)… (more)

Acharya, Krishna Prasad

2009-01-01T23:59:59.000Z

26

ZnO/Sn:In2O3 and ZnO/CdTe band offsets for extremely thin absorber photovoltaics  

SciTech Connect

Band alignments were measured by x-ray photoelectron spectroscopy for thin films of ZnO on polycrystalline Sn:In2O3 (ITO) and single crystal CdTe. Hybrid density functional theory calculations of epitaxial zinc blende ZnO(001) on CdTe(001) were performed to compare with experiment. A conduction band offset of -0.6 eV was measured for ZnO/ITO, which is larger than desired for efficient electron injection. For ZnO/CdTe, the experimental conduction band offset of 0.25 eV is smaller than the calculated value of 0.67 eV, likely due to the TeOx layer at the ZnO/CdTe interface. The measured conduction band offset for ZnO/CdTe is favorable for photovoltaic devices.

Kaspar, Tiffany C.; Droubay, Timothy C.; Jaffe, John E.

2011-12-28T23:59:59.000Z

27

Use of a capillary X-ray focused beam to investigate the chemical composition of CdZnTe wafers with high resolution CdZnTe detectors  

SciTech Connect

The control of the concentration of Zn and its fluctuation in the high pressure Bridgman grown CdZnTe crystals is part of the characterization work on the ternary grown ingots grown in house. In order to reach both high sensitivity and high position resolution, the authors have developed a new system consisting of a X-ray generator, coupled to a focusing X-ray capillary, delivering intense beams in the micron scale, since the intensity gain is around a factor of 100 compared to conventional methods. The characteristic X-rays are measured through a high resolution CdZnTe detector (225 eV at 5.9 keV FWHM) cooled by a Peltier system. The results of the investigations on different kinds of crystals will be discussed.

Fougeres, P. [EURORAD, Strasbourg (France); Burggraf, Ch.; Burggraf, Chr.; Koebel, J.M.; Regal, R.; Hage-Ali, M.; Krauth, A.; Siffert, P. [CNRS, Strasbourg (France). Lab. PHASE; Koenig, C. [Univ. Louis Pasteur, Schiltigheim (France)

1998-12-31T23:59:59.000Z

28

Growth and optical properties of CdTe quantum dots in ZnTe nanowires  

SciTech Connect

We report on the formation of optically active CdTe quantum dots in ZnTe nanowires. The CdTe/ZnTe nanostructures have been grown by a gold nanocatalyst assisted molecular beam epitaxy in a vapor-liquid solid growth process. The presence of CdTe insertions in ZnTe nanowire results in the appearance of a strong photoluminescence band in the 2.0 eV-2.25 eV energy range. Spatially resolved photoluminescence measurements reveal that this broad emission consists of several sharp lines with the spectral width of about 2 meV. The large degree of linear polarization of these individual emission lines confirms their nanowire origin, whereas the zero-dimensional confinement is proved by photon correlation spectroscopy.

Wojnar, Piotr; Janik, Elzbieta; Baczewski, Lech T.; Kret, Slawomir; Karczewski, G.; Wojtowicz, Tomasz [Institute of Physics, Polish Academy of Sciences, Al Lotnikow 32/46, 02-668 Warsaw (Poland); Goryca, Mateusz; Kazimierczuk, Tomasz; Kossacki, Piotr [Institute of Experimental Physics, Faculty of Physics, University of Warsaw, ul Hoza 69, 00-681 Warsaw (Poland)

2011-09-12T23:59:59.000Z

29

FINAL REPORT OF RESEARCH ON CuxS/ (Cd,Zn)S PHOTOVOLTAIC SOLAR ENERGY CONVERTERS 3/77 - 9/79  

E-Print Network (OSTI)

S/(Cd,Zn)S PHOTOVOLTAIC SOLAR ENERGY CONVERTERS 3/77 - 9/79Research on Photovoltaic Solar Energy Converters CuxSI(Cd~

Chin, B.L.

2013-01-01T23:59:59.000Z

30

Effects of Cu Diffusion from ZnTe:Cu/Ti Contacts on Carrier Lifetime of CdS/CdTe Thin Film Solar Cells: Preprint  

SciTech Connect

We study the performance of CdS/CdTe thin film PV devices processed with a ZnTe:Cu/Ti contact to investigate how carrier lifetime in the CdTe layer is affected by Cu diffusion from the contact.

Gessert, T. A.; Metzger, W. K.; Asher, S. E.; Young, M. R.; Johnston, S.; Dhere, R. G.; Duda, A.

2008-05-01T23:59:59.000Z

31

Enhanced photocatalytic hydrogen evolution under visible light over Cd x Zn1?x S solid solution by ruthenium doping  

Science Journals Connector (OSTI)

Cd x Zn1?x S and Ru3+ doped Ru(m)/Cd0.5Zn0.5S photocatalysts were prepared by a simple hydrothermal method, and characterized by X-ray diffraction, UV–Vis absorpt...

Shaoqin Peng; Ran An; Zhisheng Wu…

2012-10-01T23:59:59.000Z

32

Infrared spectroscopy of lattice vibrations in ZnTe/CdTe superlattices with quantum dots on the GaAs substrate with the ZnTe buffer layer  

SciTech Connect

The results of the analysis of the infrared lattice reflectance spectra of multiperiod ZnTe/CdTe superlattices with CdTe quantum dots are reported. The samples are grown by molecular beam epitaxy on the GaAs substrate with the ZnTe buffer layer. Due to the large number of periods of the superlattices, it is possible to observe CdTe-like vibration modes in the quantum dots, i.e., the dislocation-free stressed islands formed during the growth due to relaxation of elastic stresses between the ZnTe and CdTe layers are markedly different in their lattice parameters. From the frequency shifts of the CdTe- and ZnTe-like vibration modes with respect to the corresponding modes in the unstressed materials, it is possible to estimate the level of elastic stresses.

Kozyrev, S. P. [Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)], E-mail: skozyrev@sci.lebedev.ru

2009-03-15T23:59:59.000Z

33

Detector Performance of Ammonium-Sulfide-Passivated CdZnTe and CdMnTe Materials  

SciTech Connect

Dark currents, including those in the surface and bulk, are the leading source of electronic noise in X-ray and gamma detectors, and are responsible for degrading a detector's energy resolution. The detector material itself determines the bulk leakage current; however, the surface leakage current is controllable by depositing appropriate passivation layers. In previous research, we demonstrated the effectiveness of surface passivation in CZT (CdZnTe) and CMT (CdMnTe) materials using ammonium sulfide and ammonium fluoride. In this research, we measured the effect of such passivation on the surface states of these materials, and on the performances of detectors made from them.

Kim, K.H.; Bolotnikov, A.E.; Camarda, G.S.; Marchini, L.; Yang, G.; Hossain, A.; Cui, Y.; Xu, L.; and James, R.B.

2010-08-01T23:59:59.000Z

34

Formation and optical properties of CdTe/ZnTe nanostructures with different CdTe thicknesses grown on Si (100) substrates  

SciTech Connect

Atomic force microscopy (AFM) and photoluminescence (PL) measurements were carried out to investigate the formation and the optical properties of CdTe/ZnTe nanostructures with various CdTe thicknesses grown on Si (100) substrates by using molecular beam epitaxy and atomic layer epitaxy. AFM images showed that uniform CdTe/ZnTe quantum dots with a CdTe layer thickness of 2.5 ML (monolayer) were formed on Si (100) substrates. The excitonic peaks corresponding to transitions from the ground electronic subband to the ground heavy-hole band in the CdTe/ZnTe nanostructures shifted to a lower energy with increasing thickness of the CdTe layer. The activation energies of the carriers confined in the CdTe/ZnTe nanostructures grown on Si (100) substrates were obtained from the temperature-dependent PL spectra. The present observations can help improve understanding of the formation and the optical properties in CdTe/ZnTe nanostructures with different CdTe thicknesses grown on Si (100) substrates.

Lee, H. S.; Park, H. L.; Lee, I.; Kim, T. W. [Department of Physics, Yonsei University, Seoul 120-749 (Korea, Republic of); Advanced Semiconductor Research Center, Division of Electronics and Computer Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791 (Korea, Republic of)

2007-11-15T23:59:59.000Z

35

Rapid degradation of CdSe/ZnS colloidal quantum dots exposed to gamma irradiation  

E-Print Network (OSTI)

on irradiation dose. CdSe/ZnS quantum dots show poor radiation hardness, and severely degrade after less than 20 of light sources to ionizing radiation, it is important to know the levels of irradiation that would de of applica- tions ranging from optoelectronic through photocatalytic to biomedical, including applications

New Mexico, University of

36

Phase assembly and photo-induced current in CdTe-ZnO nanocomposite thin films  

SciTech Connect

Sequential radio-frequency sputtering was used to produce CdTe-ZnO nanocomposite thin films with varied semiconductor-phase extended structures. Control of the spatial distribution of CdTe nanoparticles within the ZnO embedding phase was used to influence the semiconductor phase connectivity, contributing to both changes in quantum confinement induced spectral absorption and carrier transport characteristics of the resulting nanocomposite. An increased number density of CdTe particles deposited along the applied field direction produced an enhancement in the photo-induced current observed. These results highlight the opportunity to employ long-range phase assembly as a means to control optoelectronic properties of significant interest for photovoltaic applications.

Beal, R. J.; Kana Kana, J. B. [Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721 (United States); Potter, B. G. Jr. [Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721 (United States); College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 (United States)

2012-07-16T23:59:59.000Z

37

Evaluation of CdZnTe detectors for soft x-ray applications  

SciTech Connect

High resistivity CdZnTe is a very promising material for X-ray detection at room temperature or slightly below. Cooling a Cd[sub 0.8]Zn[sub 0.2]Te crystal down to [minus]30 C reduces the leakage current to the picoamp level, which enables the use of low-noise pulsed optical feedback instead of noisier resistive feedback preamplifiers. Also, longer shaping time constants at the linear amplifier can be used for the optimum resolution. The authors have obtained resolutions of 240 eV (FWHM) for the 5.9-keV [sup 55]Fe line at [minus]40 C and of 282 eV at [minus]30 C. The Fano factor for the material at [minus]40 C was calculated to be 0.14. These results compare well with the results obtained with peltier-cooled HgI[sub 2] detectors.

Niemelae, A.; Sipilae, H. (Outokumpu Instruments Oy, Espoo (Finland))

1994-08-01T23:59:59.000Z

38

Excited states of acceptors in CdTe and ZnTe  

Science Journals Connector (OSTI)

Higher excited states of acceptors in CdTe and ZnTe are obtained by using the Baldereschi and Lipari spherical model including the cubic correction and the central-cell effect. This is done by solving the coupled radial equations by the finite-element method with Arnoldi's algorithm, which gives several (?20) low-lying states simultaneously. Our procedure allows one to determine very accurately the host band-structure parameters. In the case of CdTe we obtain the Luttinger parameters ?1 = 5.30, ?2 = 1.62, ?3 = 2.10 and the dielectric constant ?0 = 9.3. For ZnTe we obtain ?1 = 3.80, ?2 = 0.86, ?3 = 1.32 and ?0 = 9.4.

M. Said; M.A. Kanehisa

1990-01-01T23:59:59.000Z

39

Carrier dynamics and activation energy of CdTe quantum dots in a Cd{sub x}Zn{sub 1-x}Te quantum well  

SciTech Connect

We investigate the optical properties of CdTe quantum dots (QDs) in a Cd{sub 0.3}Zn{sub 0.7}Te quantum well (QW) grown on GaAs (100) substrates. Carrier dynamics of CdTe/ZnTe QDs and quantum dots-in-a-well (DWELL) structure is studied using time-resolved photoluminescence (PL) measurements, which show the longer exciton lifetime of the DWELL structure. The activation energy of the electrons confined in the DWELL structure, as obtained from the temperature-dependent PL spectra, was also higher than that of electrons confined in the CdTe/ZnTe QDs. This behavior is attributed to the better capture of carriers into QDs within the surrounding QW.

Han, W. I.; Lee, J. H.; Yu, J. S.; Choi, J. C. [Department of Physics, Yonsei University, Wonju 220-710 (Korea, Republic of); Lee, H. S. [Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of)

2011-12-05T23:59:59.000Z

40

Spectral photoresponse of ZnSe/GaAs(001) heterostructures with CdSe ultra-thin quantum well insertions  

SciTech Connect

We present a study of the spectral photoresponse (SPR) of ZnSe/GaAs(001) heterostructures for different ZnSe film thickness with and without CdSe ultra-thin quantum well (UTQW) insertions. We observe a significant increase of the SPR of heterostructures containing 3 monolayer thick CdSe UTQW insertions; these results encourage their use in photodetectors and solar cells.

Valverde-Chávez, D. A.; Sutara, F.; Hernández-Calderón, I. [Physics Department, Cinvestav-IPN, Av. IPN 2508, 07360 México, DF (Mexico)

2014-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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

Point Defects in CdZnTe Crystals Grown by Different Techniques  

SciTech Connect

We studied, by current deep-level transient spectroscopy (I-DLTS), point defects in CdZnTe detectors grown by different techniques. We identified 12 different traps with energy levels from 7 meV to 1.1 eV. Although the levels of most of the identified defects were independent of the crystal growth techniques, nevertheless there were some associated differences in the traps energies and densities.

R Gul; A Bolotnikov; H Kim; R Rodriguez; K Keeter; Z Li; G Gu; R James

2011-12-31T23:59:59.000Z

42

Point Defects in CdZnTe Crystals Grown by Different Techniques  

SciTech Connect

We studied, by current deep-level transient spectroscopy (I-DLTS), point defects in CdZnTe detectors grown by different techniques. We identified 12 different traps with energy levels from 7 meV to 1.1 eV. Although the levels of most of the identified defects were independent of the crystal growth techniques, nevertheless there were some associated differences in the traps energies and densities.

Gul, R.; Bolotnikov, A.; Kim, H.K.; Rodriguez, R.; Keeter, K.; Li, Z.; Gu, G.; and James, R.B.

2011-02-02T23:59:59.000Z

43

First-principles study of the electronic and structural properties of (CdTe)n/(ZnTe)n superlattices  

Science Journals Connector (OSTI)

Abstract We present the results of a first-principles study of the electronic and structural properties of binary CdTe and ZnTe compounds and their (CdTe)n/(ZnTe)n superlattices (SLs). The computational method is based on the full-potential linear muffin tin orbitals method (FP-LMTO) augmented by a plane-wave basis (PLW). The exchange and correlation energy is described in the local density approximation (LDA) using the Perdew–Wang parameterization including a generalized gradient approximation (GGA). The calculated structural properties of CdTe and ZnTe compounds are in good agreement with available experimental and theoretical data. We have also carried out band-structure calculations for the binary CdTe and ZnTe compounds and their (CdTe)n/(ZnTe)n superlattices (SLs). From the results of the electronic properties, we find that the parent material CdTe and ZnTe and their superlattices have a direct band gaps. The fundamental band gap decreases with increasing the number of monolayer n.

M. Boucharef; S. Benalia; D. Rached; M. Merabet; L. Djoudi; B. Abidri; N. Benkhettou

2014-01-01T23:59:59.000Z

44

Nanoassembly control and optical absorption in CdTe-ZnO nanocomposite thin films  

SciTech Connect

The spatial distribution of CdTe nanoparticles within a ZnO thin-film matrix was manipulated using a dual-source, sequential radio-frequency (RF)-sputter deposition technique to produce nanocomposite materials with tuned spectral absorption characteristics. The relative substrate exposure time to each sputtering source was used to control the semiconductor phase connectivity, both within the film plane and along the film growth direction, to influence the degree of photocarrier confinement and the resulting optical transition energies exhibited by the CdTe phase. Significant changes (up to {Delta}E {approx_equal} 0.3 eV) in the absorption onset energy for the CdTe nanoparticle ensemble were produced through modification in the extended structure of the semiconductor phase. Raman spectroscopy, cross-sectional transmission electron microscopy, and x-ray diffraction were used to confirm the phase identity of the CdTe and ZnO and to characterize the nanostructures produced in these composite films. Isochronal annealing for 5 min at temperatures up to 800 deg. C further indicated the potential to improve film crystallinity as well as to establish the post-deposition thermal processing limits of stability for the semiconductor phase. The study highlights the significance of ensemble behavior as a means to influence quantum-scale semiconductor optical characteristics of import to the use of such materials as the basis for a variety of optoelectronic devices, including photosensitized heterojunction components in thin film photovoltaics.

Potter, B. G. Jr. [Materials Science and Engineering Department, University of Arizona, Tucson, Arizona 85721 (United States); College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 (United States); Beal, R. J.; Allen, C. G. [Materials Science and Engineering Department, University of Arizona, Tucson, Arizona 85721 (United States)

2012-02-01T23:59:59.000Z

45

ZnO/Sn:In2O3 and ZnO/CdTe band offsets for extremely thin absorber...  

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

ZnOSn:In2O3 and ZnOCdTe band offsets for extremely thin absorber photovoltaics . ZnOSn:In2O3 and ZnOCdTe band offsets for extremely thin absorber photovoltaics . Abstract: Band...

46

FLEXIBLE CdTe SOLAR CELLS BY A LOW TEMPERATURE PROCESS ON ITO/ZnO COATED A. Salavei, I. Rimmaudo, F. Piccinelli1  

E-Print Network (OSTI)

FLEXIBLE CdTe SOLAR CELLS BY A LOW TEMPERATURE PROCESS ON ITO/ZnO COATED POLYMERS A. Salavei, I of a deposition process for flexible CdTe devices on ITO/ZnO coated polymers. Optimization of fabrication process will be discussed. Keywords: Flexible Substrate, CdTe, ITO, Laser Processing, Thin Film Solar Cell 1 INTRODUCTION

Romeo, Alessandro

47

First-principles study of ground-and excited-state properties of MgO, ZnO, and CdO polymorphs  

E-Print Network (OSTI)

to be clarified: While the band gaps of the common-cation systems CdTe, CdSe, CdS, and CdO show an increase of the fundamental gap along the decreas- ing anion size until CdS, the value for CdO is smaller than that of CdS.7 the difficulty to achieve its p-type doping. Nevertheless, the potential of ZnO for optoelectronics1 but also

Schleife, André

48

Electrical Characterization of Cu Composition Effects in CdS/CdTe Thin-Film Solar Cells with a ZnTe:Cu Back Contact: Preprint  

SciTech Connect

We study the effects of Cu composition on the CdTe/ZnTe:Cu back contact and the bulk CdTe. For the back contact, its potential barrier decreases with Cu concentration while its saturation current density increases. For the bulk CdTe, the hole density increases with Cu concentration. We identify a Cu-related deep level at {approx}0.55 eV whose concentration is significant when the Cu concentration is high. The device performance, which initially increases with Cu concentration then decreases, reflects the interplay between the positive influences and negative influences (increasing deep levels in CdTe) of Cu.

Li, J. V.; Duenow, J. N.; Kuciauskas, D.; Kanevce, A.; Dhere, R. G.; Young, M. R.; Levi, D. H.

2012-07-01T23:59:59.000Z

49

Band gap of CdTe and Cd{sub 0.9}Zn{sub 0.1}Te crystals  

SciTech Connect

The band gap E{sub g} of the CdTe and Cd{sub 0.9}Zn{sub 0.1}Te crystals and its temperature dependence are determined by optical methods. This is motivated by considerable contradictoriness of the published data, which hampers the interpretation and calculation of characteristics of detectors of X-ray and {gamma} radiation based on these materials (E{sub g} = 1.39-1.54 and 1.51-1.6 eV for CdTe and Cd{sub 0.9}Zn{sub 0.1}Te, respectively). The used procedure of determination of E{sub g} is analyzed from the viewpoint of the influence of the factors leading to inaccuracies in determination of its value. The measurements are performed for well-purified high-quality samples. The acquired data for CdTe (E{sub g} = 1.47-1.48 eV) and Cd{sub 0.9}Zn{sub 0.1}Te (E{sub g} = 1.52-1.53 eV) at room temperature substantially narrow the range of accurate determination of E{sub g}.

Kosyachenko, L. A., E-mail: lakos@chv.ukrpact.net; Sklyarchuk, V. M.; Sklyarchuk, O. V.; Maslyanchuk, O. L. [Chernovtsy National University (Ukraine)

2011-10-15T23:59:59.000Z

50

Reduction of surface leakage current by surface passivation of CdZn Te and other materials using hyperthermal oxygen atoms  

DOE Patents (OSTI)

Reduction of surface leakage current by surface passivation of Cd.sub.1-x Zn.sub.x Te and other materials using hyperthermal oxygen atoms. Surface effects are important in the performance of CdZnTe room-temperature radiation detectors used as spectrometers since the dark current is often dominated by surface leakage. A process using high-kinetic-energy, neutral oxygen atoms (.about.3 eV) to treat the surface of CdZnTe detectors at or near ambient temperatures is described. Improvements in detector performance include significantly reduced leakage current which results in lower detector noise and greater energy resolution for radiation measurements of gamma- and X-rays, thereby increasing the accuracy and sensitivity of measurements of radionuclides having complex gamma-ray spectra, including special nuclear materials.

Hoffbauer, Mark A. (Los Alamos, NM); Prettyman, Thomas H. (Los Alamos, NM)

2001-01-01T23:59:59.000Z

51

Chlorine doping of cubic CdS and ZnS grown by compound source molecular-beam epitaxy  

Science Journals Connector (OSTI)

We report on the chlorine doping of ZnS and CdS grown by compound source molecular-beam epitaxy. The maximum free electron concentrations achieved were 1×1018 and 8×1019 cm?3, respectively. The conductivity of the cubic CdS epilayers turned out to be anisotropic with respect to the ?1 1 0? crystallographic directions due to an anisotropic lattice defect structure.

M Grün; A Storzum; M Hetterich; A Kamilli; W Send; Th Walter; C Klingshirn

1999-01-01T23:59:59.000Z

52

Removal of As, Cd, Cu, Ni, Pb, and Zn from a highly contaminated industrial soil using surfactant enhanced soil washing  

Science Journals Connector (OSTI)

Surfactant enhanced soil washing (SESW) was applied to an industrial contaminated soil. A preliminary characterization of the soil regarding the alkaline-earth metals, Na, K, Ca and Mg took values of 2866, 2036, 2783 and 4149 mg/kg. The heavy metals As, Cd, Cu, Pb, Ni and Zn, had values of 4019, 14, 35582, 70, 2603, and 261 mg/kg, respectively. When using different surfactants, high removal of Cu, Ni and Zn were found, and medium removals for Pb, As and Cd. In the case of these three metals, tap water removed more than the surfactant solutions, except for the case of As. There were surfactants with average removals (this is, the removal for all the metals studied) of 67.1% (Tween 80), 64.9% (Surfacpol 14104) and 61.2% (Emulgin W600). There were exceptional removals using Texapon N-40 (83.2%, 82.8% and 86.6% for Cu, Ni and Zn), Tween 80 (85.9, 85.4 and 81.5 for Cd, Zn and Cu), Polafix CAPB (79%, 83.2% and 49.7% for Ni, Zn and As). The worst results were obtained with POLAFIX LO with a global removal of 45%, well below of the average removal with tap water (50.2%).All removal efficiencies are reported for a one step washing using 0.5% surfactant solutions, except for the case of mezquite gum, where a 0.1% solution was employed.

Luis G. Torres; Rosario B. Lopez; Margarita Beltran

2012-01-01T23:59:59.000Z

53

Influence of Cobalt Doping on the Physical Properties of Zn0.9Cd0.1S Nanoparticles  

Science Journals Connector (OSTI)

Zn0.9Cd0.1S nanoparticles doped with 0.005–0.24 M cobalt have been prepared by co-precipitation technique in ice bath at 280 K. For the cobalt concentration >0.18 M, XRD pattern shows unidentified phases along wi...

Sonal Singhal; Amit Kumar Chawla; Hari Om Gupta…

2010-02-01T23:59:59.000Z

54

Measuring charge trap occupation and energy level in CdSe/ZnS quantum dots using a scanning tunneling microscope  

E-Print Network (OSTI)

We use a scanning tunneling microscope to probe single-electron charging phenomena in individual CdSe/ZnS (core/shell) quantum dots (QDs) at room temperature. The QDs are deposited on top of a bare Au thin film and form a ...

Bulovic, Vladimir

55

InAs(ZnCdS) Quantum Dots Optimized for Biological Imaging in the Near-Infrared  

E-Print Network (OSTI)

We present the synthesis of InAs quantum dots (QDs) with a ZnCdS shell with bright and stable emission in the near-infrared (NIR, 700?900 nm) region for biological imaging applications. We demonstrate how NIR QDs can image ...

Allen, Peter M.

56

Absorption spectra of CdSe-ZnS core-shell quantum dots at high photon energies : experiment and modeling  

E-Print Network (OSTI)

Absorption spectra of CdSe-ZnS core-shell quantum dots at high photon energies : experiment Tata Institute of Fundamental Research Homi Bhabha Road, Mumbai 400005, India Abstract Absorption. In agreement with previous reports, the absorption coefficient at energies 1 eV above the effective bandgap

Ghosh, Sandip

57

Composite system based on CdSe/ZnS quantum dots and GaAs nanowires  

SciTech Connect

The possibility of fabricating a composite system based on colloidal CdSe/ZnS quantum dots and GaAs nanowires is demonstrated and the structural and emission properties of this system are investigated by electron microscopy and photoluminescence spectroscopy techniques. The good wettability and developed surface of the nanowire array lead to an increase in the surface density of quantum dots and, as a consequence, in the luminosity of the system in the 600-nm wavelength region. The photoluminescence spectrum of the quantum dots exhibits good temperature stability in the entire range 10-295 K. The impact of surface states on energy relaxation and the role of exciton states in radiative recombination in the quantum dots are discussed.

Khrebtov, A. I. [St. Petersburg Academic University-Nanotechnology Research and Education Center, Russian Academy of Sciences (Russian Federation)] [St. Petersburg Academic University-Nanotechnology Research and Education Center, Russian Academy of Sciences (Russian Federation); Talalaev, V. G. [St. Petersburg State University, Fock Institute of Physics (Russian Federation)] [St. Petersburg State University, Fock Institute of Physics (Russian Federation); Werner, P. [Max-Planck-Institut fuer Mikrostukturphysik (Germany)] [Max-Planck-Institut fuer Mikrostukturphysik (Germany); Danilov, V. V. [Vavilov State Optical Institute (Russian Federation)] [Vavilov State Optical Institute (Russian Federation); Artemyev, M. V. [Belarussian State University, Institute for Physicochemical Problems (Belarus)] [Belarussian State University, Institute for Physicochemical Problems (Belarus); Novikov, B. V. [St. Petersburg State University, Fock Institute of Physics (Russian Federation)] [St. Petersburg State University, Fock Institute of Physics (Russian Federation); Shtrom, I. V. [St. Petersburg Academic University-Nanotechnology Research and Education Center, Russian Academy of Sciences (Russian Federation)] [St. Petersburg Academic University-Nanotechnology Research and Education Center, Russian Academy of Sciences (Russian Federation); Panfutova, A. S. [Vavilov State Optical Institute (Russian Federation)] [Vavilov State Optical Institute (Russian Federation); Cirlin, G. E. [St. Petersburg Academic University-Nanotechnology Research and Education Center, Russian Academy of Sciences (Russian Federation)] [St. Petersburg Academic University-Nanotechnology Research and Education Center, Russian Academy of Sciences (Russian Federation)

2013-10-15T23:59:59.000Z

58

Photo-instability of CdSe/ZnS quantum dots in poly(methylmethacrylate) film  

SciTech Connect

The photo-instability of CdSe/ZnS quantum dots (QDs) has been studied under varied conditions. We discussed the main features of the evolution of photoluminescence (PL) intensity and energy at different laser powers, which showed critical dependences on the environment. The PL red shift in a vacuum showed strong temperature dependence, from which we concluded that the thermal activation energy for trapping states of the charge carriers was about 14.7 meV. Furthermore, the PL spectra showed asymmetric evolution during the laser irradiation, for which two possible explanations were discussed. Those results provided a comprehensive picture for the photo-instability of the colloidal QDs under different conditions.

Zhang, Hongyi; Liu, Yu; Ye, Xiaoling; Chen, Yonghai [Key Laboratory of Semiconductor Materials Science and Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083 (China)] [Key Laboratory of Semiconductor Materials Science and Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083 (China)

2013-12-28T23:59:59.000Z

59

Polarimetric performance of a Laue lens gamma-ray CdZnTe focal plane prototype  

SciTech Connect

A gamma-ray telescope mission concept [gamma ray imager (GRI)] based on Laue focusing techniques has been proposed in reply to the European Space Agency call for mission ideas within the framework of the next decade planning (Cosmic Vision 2015-2025). In order to optimize the design of a focal plane for this satellite mission, a CdZnTe detector prototype has been tested at the European Synchrotron Radiation Facility under an {approx}100% polarized gamma-ray beam. The spectroscopic, imaging, and timing performances were studied and in particular its potential as a polarimeter was evaluated. Polarization has been recognized as being a very important observational parameter in high energy astrophysics (>100 keV) and therefore this capability has been specifically included as part of the GRI mission proposal. The prototype detector tested was a 5 mm thick CdZnTe array with an 11x11 active pixel matrix (pixel area of 2.5x2.5 mm{sup 2}). The detector was irradiated by a monochromatic linearly polarized beam with a spot diameter of about 0.5 mm over the energy range between 150 and 750 keV. Polarimetric Q factors of 0.35 and double event relative detection efficiency of 20% were obtained. Further measurements were performed with a copper Laue monochromator crystal placed between the beam and the detector prototype. In this configuration we have demonstrated that a polarized beam does not change its polarization level and direction after undergoing a small angle (<1 deg.) Laue diffraction inside a crystal.

Curado da Silva, R. M. [Departmento de Fisica, Universidade de Coimbra, P-3000 Coimbra (Portugal); Center for Space Radiations, Univesite Catholique de Louvain (Belgium); Caroli, E.; Stephen, J. B.; Schiavone, F.; Donati, A.; Ventura, G. [Istituto di Astrofisica Spaziale e Fisica Cosmica-Bologna, Via Gobetti 101, I-40129 Bologna (Italy); Pisa, A.; Auricchio, N.; Frontera, F. [Dipartimento di Fisica, Universita di Ferrara, Ferrara (Italy); Del Sordo, S. [Istituto di Astrofisica Spaziale e Fisica Cosmica-Palermo, Via Ugo La Malfa 153, 90146 Palermo (Italy); Honkimaeki, V. [European Synchrotron Radiation Facility, Grenoble (France); Trindade, A. M. F. [Departmento de Fisica, Universidade de Coimbra, P-3000 Coimbra (Portugal)

2008-10-15T23:59:59.000Z

60

Use of separate ZnTe interface layers to form ohmic contacts to p-CdTe films  

DOE Patents (OSTI)

A method of is disclosed improving electrical contact to a thin film of a p-type tellurium-containing II-VI semiconductor comprising: depositing a first undoped layer of ZnTe on a thin film of p-type tellurium containing II-VI semiconductor with material properties selected to limit the formation of potential barriers at the interface between the p-CdTe and the undoped layer, to a thickness sufficient to control diffusion of the metallic-doped ZnTe into the p-type tellurium-containing II-VI semiconductor, but thin enough to minimize affects of series resistance; depositing a second heavy doped p-type ZnTe layer to the first layer using an appropriate dopant; and depositing an appropriate metal onto the outer-most surface of the doped ZnTe layer for connecting an external electrical conductor to an ohmic contact. 11 figs.

Gessert, T.A.

1999-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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

Use of separate ZnTe interface layers to form OHMIC contacts to p-CdTe films  

DOE Patents (OSTI)

A method of improving electrical contact to a thin film of a p-type tellurium-containing II-VI semiconductor comprising: depositing a first undoped layer of ZnTe on a thin film of p-type tellurium containing II-VI semiconductor with material properties selected to limit the formation of potential barriers at the interface between the p-CdTe and the undoped layer, to a thickness sufficient to control diffusion of the metallic-doped ZnTe into the p-type tellurim-containing II-VI semiconductor, but thin enough to minimize affects of series resistance; depositing a second heavy doped p-type ZnTe layer to the first layer using an appropriate dopant; and depositing an appropriate metal onto the outer-most surface of the doped ZnTe layer for connecting an external electrical conductor to an ohmic contact.

Gessert, Timothy A. (Conifer, CO)

1999-01-01T23:59:59.000Z

62

Enhanced photovoltaic performance of nanocrystalline CdTe/ZnO solar cells using sol-gel ZnO and positive bias treatment  

SciTech Connect

The effect of doping and porosity of the n-type ZnO layer on the performance of solution-processed, sintered p-CdTe/n-ZnO nanocrystal photovoltaic (PV) devices is investigated. Amorphous sol-gel ZnO is found to be the best candidate with overall energy conversion efficiencies above 8% obtained if the ZnO is also indium doped. We demonstrate that when such PV devices are left under forward bias (in dark or light), the device efficiency values are raised to at least 9.8%, due to a substantially increased open-circuit voltage and fill-factor. This drastic enhancement is attributed to improved band alignment at the ITO/CdTe interface. The forward-bias treatment is slowly reversed over a period of days to weeks on standing under open circuit conditions, but is readily restored with further voltage treatment. The moderate processing conditions and high efficiency of such devices demonstrate that nanocrystal-based systems are a promising technology for photovoltaics.

MacDonald, B. I. [CSIRO Materials Science and Engineering, Bayview Avenue, Clayton, Victoria 3168 (Australia); School of Chemistry and Bio21 Institute, The University of Melbourne, Parkville, Victoria 3010 (Australia); Della Gaspera, E.; Watkins, S. E.; Jasieniak, J. J., E-mail: Jacek.Jasieniak@csiro.au [CSIRO Materials Science and Engineering, Bayview Avenue, Clayton, Victoria 3168 (Australia); Mulvaney, P. [School of Chemistry and Bio21 Institute, The University of Melbourne, Parkville, Victoria 3010 (Australia)

2014-05-14T23:59:59.000Z

63

Charge transport properties in CdZnTe detectors grown by the vertical Bridgman technique  

SciTech Connect

Presently, a great amount of effort is being devoted to the development of CdTe and CdZnTe (CZT) detectors for a large variety of applications such as medical, industrial, and space research. We present the spectroscopic properties of some CZT crystals grown by the standard vertical Bridgman method and by the boron oxide encapsulated vertical Bridgman method, which has been recently implemented at IMEM-CNR (Parma, Italy). In this technique, the crystal is grown in an open quartz crucible fully encapsulated by a thin layer of liquid boron oxide. This method prevents contact between the crystal and the crucible, thereby allowing larger single grains with a lower dislocation density to be obtained. Several mono-electrode detectors were realized, with each having two planar gold contacts. The samples are characterized by an active area of about 7 mm x 7 mm and thicknesses ranging from 1 to 2 mm. The charge transport properties of the detectors have been studied by mobility-lifetime ({mu} x {tau}) product measurements, carried out at the European Synchrotron Radiation Facility (Grenoble, France) in the planar transverse field configuration, where the impinging beam direction is orthogonal to the collecting electric field. We have performed several fine scans between the electrodes with a beam spot of 10 {mu}m x 10 {mu}m at various energies from 60 to 400 keV. In this work, we present the test results in terms of the ({mu} x {tau}) product of both charge carriers.

Auricchio, N.; Caroli, E. [INAF/IASF-Bologna, Bologna, 40129 (Italy); Marchini, L.; Zappettini, A. [IMEM-CNR, Parma, 43100 (Italy); Abbene, L. [DIFI, University of Palermo, Palermo, 90128 (Italy); Honkimaki, V. [European Synchrotron Radiation Facility, Grenoble, 38000 (France)

2011-12-15T23:59:59.000Z

64

Energy Transfer Dynamics and Dopant Luminescence in Mn-Doped CdS/ZnS Core/Shell Nanocrystals  

E-Print Network (OSTI)

intensity calibration. A 370 nm light emitting diode was used as the excitation light source. . 32 Figure 9 Absorption spectra of Mn-doped CdS/ZnS nanocrystals with (sample 1, solid) and without (sample 2, dashed) Ostwald ripening with the same CdS core... with core size and shell thickness of 3.6 and ~1.8 nm, respectively. The luminescence spectra were taken using a CCD spectrometer (USB2000, Ocean Optics) without intensity calibration using a 370 nm light emitting diode as the excitation light source...

Chen, Hsiang-Yun

2012-11-13T23:59:59.000Z

65

Enhanced photocatalytic hydrogen evolution under visible light irradiation over Cd0.5Zn0.5S solid solution by magnesium-doping  

Science Journals Connector (OSTI)

A series of Mg doped Cd0.5Zn0.5S solid solution photocatalysts were prepared by a hydrothermal method and characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscope, BE...

Shaoqin Peng; Caihong Chen; Xiaoyan Liu…

2013-10-01T23:59:59.000Z

66

Magneto-optical studies of ensembles of semimagnetic self-organized Cd(Mn)Se/Zn(Mn)Se Quantum Dots  

SciTech Connect

Ensembles of Cd(Mn)Se/ZnSe and CdSe/Zn(Mn)Se semimagnetic self-organized quantum dots with different Mn content have been studied by photoluminescence and resonant Raman scattering under strong magnetic fields in Faraday and Voigt geometries and with spectral and polarization selective excitation. Electron spin-flip Raman scattering has been observed in Voigt geometry in the structures with large Mn content. Narrow exciton peaks completely ?{sup ?}?{sup +} polarized have been observed under selective excitation in Faraday geometry in the structures with medium and small Mn content. A number of specific effects manifested themselves in the structures with a smallest Mn content where no Zeeman shift of the photoluminescence bands was observed.

Reshina, I. I.; Ivanov, S. V.; Toropov, A. A. [Ioffe Physical Technical Institute of RAS, Polytechnicheskaya 26, 194021 St. Petersburg (Russian Federation)

2013-12-04T23:59:59.000Z

67

Laser irradiation effects on the CdTe/ZnTe quantum dot structure studied by Raman and AFM spectroscopy  

SciTech Connect

Micro-Raman spectroscopy has been applied to investigate the impact of laser irradiation on semiconducting CdTe/ZnTe quantum dots (QDs) structures. A reference sample (without dots) was also studied for comparison. Both samples were grown by molecular beam epitaxy technique on the p-type GaAs substrate. The Raman spectra have been recorded for different time of a laser exposure and for various laser powers. The spectra for both samples exhibit peak related to the localized longitudinal (LO) ZnTe phonon of a wavenumber equal to 210 cm{sup -1}. For the QD sample, a broad band corresponding to the LO CdTe phonon related to the QD-layer appears at a wavenumber of 160 cm{sup -1}. With increasing time of a laser beam exposure and laser power, the spectra get dominated by tellurium-related peaks appearing at wavenumbers around 120 cm{sup -1} and 140 cm{sup -1}. Simultaneously, the ZnTe surface undergoes rising damage, with the formation of Te aggregates at the pinhole edge as reveal atomic force microscopy observations. Local temperature of irradiated region has been estimated from the anti-Stokes/Stokes ratio of the Te modes intensity and it was found to be close or exceeding ZnTe melting point. Thus, the laser damage can be explained by the ablation process.

Zielony, E.; Placzek-Popko, E.; Henrykowski, A.; Gumienny, Z.; Kamyczek, P.; Jacak, J. [Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw (Poland); Nowakowski, P.; Karczewski, G. [Institute of Physics, Polish Academy of Sciences, al. Lotnikow 32/46, 02-668 Warsaw (Poland)

2012-09-15T23:59:59.000Z

68

4,4?-Bipyridine-aided synthesis and characterization of Zn(II) and Cd(II) 2-sulfoterephthalate complexes  

SciTech Connect

Six d{sup 10} complexes, [Zn{sub 1.5}(stp)(bpy){sub 0.5}(H{sub 2}O){sub 2}]·0.5H{sub 2}O (1), Cd{sub 1.5}(stp)(bpy){sub 0.5}(H{sub 2}O){sub 2} (2), [Cd{sub 1.5}(stp)(bpy)(H{sub 2}O)]·H{sub 2}O (3), [Zn{sub 0.5}(bpy){sub 0.5}(H{sub 2}O){sub 2}][Zn(stp)(bpy)(H{sub 2}O)]·0.5H{sub 2}O (4), Cd{sub 3}(stp){sub 2}(bpy){sub 3}(H{sub 2}O){sub 3} (5), Hbpy·[Zn{sub 0.5}(bpy)(H{sub 2}O){sub 2}][Zn{sub 0.5}(stp)(H{sub 2}O)]·H{sub 2}O (6) based on 2-sulfoterephthalate (stp{sup 3?}) and 4,4?-bipyridine (bpy) have been synthesized under hydro/solvo-thermal conditions and structurally characterized. Complex 1 exhibits a three-fold interpenetrated 3D porous architecture. Complexes 2 and 3 possess helices with different chirality arranging alternately. 4 and 6 are addition compounds, which compose of complex cation and complex anion. Complex 5 features a 3D layer-pillar framework in which a (4, 4) grid layer is constructed by stp{sup 3?} ligands and Cd(II) ions, and the layers are further connected by bpy pillars. The solid-state luminescent properties of the coordination polymers have also been investigated. - Graphical abstract: Display Omitted - Highlights: • Complexes 1–3 possess helices with different chirality arranging alternately. • The structural diversity can be attributed to various coordination modes of ligands. • The formation of helical structure is related to the adjacent carboxyl and sulfonate groups. • Bpy exhibits three roles: bridge, hydrogen bonding acceptor, and template.

Xiao, Shan-Shan [College of Chemistry, Beijing Normal University, Beijing 100875 (China); Li, Xin-Xin [Analytical and Testing Centre, Beijing Normal University, Beijing 100875 (China); Zheng, Xiang-Jun, E-mail: xjzheng@bnu.edu.cn [College of Chemistry, Beijing Normal University, Beijing 100875 (China); Jia, Tian-Jing; Jin, Lin-Pei [College of Chemistry, Beijing Normal University, Beijing 100875 (China)

2013-09-15T23:59:59.000Z

69

Study of asymmetries of Cd(Zn)Te devices investigated using photo-induced current transient spectroscopy, Rutherford backscattering, surface photo-voltage spectroscopy, and gamma ray spectroscopies  

SciTech Connect

Despite these recent advancements in preparing the surface of Cd(Zn)Te devices for detector applications, large asymmetries in the electronic properties of planar Cd(Zn)Te detectors are common. Furthermore, for the development of patterned electrode geometries, selection of each electrode surface is crucial for minimizing dark current in the device. This investigation presented here has been carried out with three objectives. Each objective is oriented towards establishing reliable methods for the selection of the anode and cathode surfaces independent of the crystallographic orientation. The objectives of this study are (i) investigate how the asymmetry in I-V characteristics of Cd(Zn)Te devices may be associated with the TeO2 interfacial layer using Rutherford backscattering to study the structure at the Au-Cd(Zn)Te interface, (ii) develop an understanding of how the concentration of the active traps in Cd(Zn)Te varies with the external bias, and (iii) propose non-destructive methods for selection of the anode and cathode which are independent of crystallographic orientation. The spectroscopic methods employed in this investigation include Rutherford backscattering spectroscopy, photo-induced current transient spectroscopy, and surface photo-voltage spectroscopy, as well as gamma ray spectroscopy to demonstrate the influence on detector properties.

Crocco, J.; Bensalah, H.; Zheng, Q.; Dieguez, E. [Crystal Growth Laboratory, Universidad Autonoma de Madrid, Madrid Spain (Spain); Corregidor, V.; Avles, E. [Instituto Tecnologico e Nuclear UFA, Sacavem (Portugal); Castaldini, A.; Fraboni, B.; Cavalcoli, D.; Cavallini, A. [PHoS Laboratory, Department of Physics, University of Bologna, Bologna (Italy); Vela, O. [Centro de Investigacion Energeticas Medioambientales y Tecnologicas (CIEMAT), Madrid (Spain)

2012-10-01T23:59:59.000Z

70

Pulse-shape discrimination of surface events in CdZnTe detectors for the COBRA experiment  

E-Print Network (OSTI)

Events near the cathode and anode surfaces of a coplanar grid CdZnTe detector are identifiable by means of the interaction depth information encoded in the signal amplitudes. However, the amplitudes cannot be used to identify events near the lateral surfaces. In this paper a method is described to identify lateral surface events by means of their pulse shapes. Such identification allows for discrimination of surface alpha particle interactions from more penetrating forms of radiation, which is particularly important for rare event searches. The effectiveness of the presented technique in suppressing backgrounds due to alpha contamination in the search for neutrinoless double beta decay with the COBRA experiment is demonstrated.

Matthew Fritts; Jan Tebrügge; Jürgen Durst; Joachim Ebert; Claus Gößling; Thomas Göpfert; Daniel Gehre; Caren Hagner; Nadine Heidrich; Michael Homann; Tobias Köttig; Till Neddermann; Christian Oldorf; Thomas Quante; Silke Rajek; Oscar Reinecke; Oliver Schulz; Jan Timm; Björn Wonsak; Kai Zuber

2014-01-23T23:59:59.000Z

71

Cadmium sulfate application to sludge-amended soils: II. Extraction of Cd, Zn, and Ma from solid phases  

SciTech Connect

Cadmium, Zn and Mn in eleven paired soils (one which had a history of sludge application and a control from adjacent land where sludge had not been used) were partitioned into five fractions: exchangeable, adsorbed, organically bound, carbonate bound and sulfide, by the use of KNO{sub 3}, H{sub 2}O, NaHO, EDTA and HNO{sub 3}, respectively. The data indicate that the major portion of the total metals was found in the carbonate, sulfide and organic fractions. Addition of CaCO{sub 3} caused an increase in the exchangeable + soluble fractions of added Cd in the soils, but had little effect on native or sludge derived Cd.

Mahler, R.J. (Univ. of Arkansas, Marianna (USA)); Ryan, J.A. (Environmental Protection Agency Cincinnati, OH (USA))

1988-01-01T23:59:59.000Z

72

COMPACT CdZnTe-BASED GAMMA CAMERA FOR PROSTATE CANCER IMAGING  

SciTech Connect

In this paper, we discuss the design of a compact gamma camera for high-resolution prostate cancer imaging using Cadmium Zinc Telluride (CdZnTe or CZT) radiation detectors. Prostate cancer is a common disease in men. Nowadays, a blood test measuring the level of prostate specific antigen (PSA) is widely used for screening for the disease in males over 50, followed by (ultrasound) imaging-guided biopsy. However, PSA tests have a high false-positive rate and ultrasound-guided biopsy has a high likelihood of missing small cancerous tissues. Commercial methods of nuclear medical imaging, e.g. PET and SPECT, can functionally image the organs, and potentially find cancer tissues at early stages, but their applications in diagnosing prostate cancer has been limited by the smallness of the prostate gland and the long working distance between the organ and the detectors comprising these imaging systems. CZT is a semiconductor material with wide band-gap and relatively high electron mobility, and thus can operate at room temperature without additional cooling. CZT detectors are photon-electron direct-conversion devices, thus offering high energy-resolution in detecting gamma rays, enabling energy-resolved imaging, and reducing the background of Compton-scattering events. In addition, CZT material has high stopping power for gamma rays; for medical imaging, a few-mm-thick CZT material provides adequate detection efficiency for many SPECT radiotracers. Because of these advantages, CZT detectors are becoming popular for several SPECT medical-imaging applications. Most recently, we designed a compact gamma camera using CZT detectors coupled to an application-specific-integrated-circuit (ASIC). This camera functions as a trans-rectal probe to image the prostate gland from a distance of only 1-5 cm, thus offering higher detection efficiency and higher spatial resolution. Hence, it potentially can detect prostate cancers at their early stages. The performance tests of this camera have been completed. The results show better than 6-mm resolution at a distance of 1 cm. Details of the test results are discussed in this paper.

CUI, Y.; LALL, T.; TSUI, B.; YU, J.; MAHLER, G.; BOLOTNIKOV, A.; VASKA, P.; DeGERONIMO, G.; O'CONNOR, P.; MEINKEN, G.; JOYAL, J.; BARRETT, J.; CAMARDA, G.; HOSSAIN, A.; KIM, K.H.; YANG, G.; POMPER, M.; CHO, S.; WEISMAN, K.; SEO, Y.; BABICH, J.; LaFRANCE, N.; AND JAMES, R.B.

2011-10-23T23:59:59.000Z

73

Progress in the development of large area sub-millimeter resolution CdZnTe strip detectors  

SciTech Connect

The authors report progress in ongoing measurements of the performance of a sub-millimeter pitch CdZnTe strip detector developed as a prototype for astronomical instruments. Strip detectors can be used to provide two-dimensional position resolution with fewer electronic channels than pixellated arrays. Arrays of this type are under development for the position-sensitive image plane detector for a coded-aperture telescope operating in the hard x-ray range of 20--200 keV. The prototype is a 1.5 mm thick, 64 x 64 orthogonal stripe CdZnTe detector of 0.375 mm pitch in both dimensions, approximately one square inch of sensitive area. In addition to energy and spatial resolution capabilities, as reported last year, the authors demonstrate the imaging capabilities and discuss uniformity of response across an 8 x 8 stripe, 64 pixel, segment of detector. A technique for determination of the depth of photon interaction is discussed and initial results related to depth determination are presented. Issues related to the design and development of readout electronics, the packaging and production of strip detectors and the production of compact strip detector modules, including detector and readout electronics, are also discussed.

Macri, J.R.; Boykin, D.V.; Larson, K. [Univ. of New Hampshire, Durham, NH (United States). Space Science Center] [and others

1996-12-31T23:59:59.000Z

74

Voltage-induced electroluminescence characteristics of hybrid light-emitting diodes with CdSe/Cd/ZnS core-shell nanoparticles embedded in a conducting polymer on plastic substrates  

SciTech Connect

We investigate the electroluminescence (EL) characteristics of a hybrid light-emitting diode (HyLED) with an emissive layer comprised of CdSe/Cd/ZnS core-shell nanoparticles (NPs) embedded in poly(9,9-di-n-octylfluorenyl-2,7-diyl) (PFO) on a plastic substrate. The EL characteristics change dramatically with increasing of the biased voltage. At low voltages, recombination of electrons and holes occurs only in the PFO film because of poor charge transfer in the PFO-CdSe/Cd/ZnS NPs composite film, while the color of the light-emitting from the HyLED changes from blue to red as the biased voltage increases from 7.5 to 17.5?V. We examine and discuss the mechanism of this color tunability.

Kwak, Kiyeol; Cho, Kyoungah, E-mail: chochem@korea.ac.kr, E-mail: sangsig@korea.ac.kr; Kim, Sangsig, E-mail: chochem@korea.ac.kr, E-mail: sangsig@korea.ac.kr [Department of Electrical Engineering, Korea University, Seoul 136-713 (Korea, Republic of)] [Department of Electrical Engineering, Korea University, Seoul 136-713 (Korea, Republic of)

2014-03-10T23:59:59.000Z

75

CD  

U.S. Energy Information Administration (EIA) Indexed Site

m m 3 (D CD ^ Q) r* o' 3 a 3 5" w' c* Q) f-i- O 3 o o m m > o t\3' & "5 o o z V / oo 00 O O 0) i H * * ZJ (Q C/5 m g> CO o o 3 3 (D O J SL CD CU g (D T3 * CQ II CD tt> 0) CO CD 00 CD § = > co 3 m 33 1 S § 5" CD |«8 CQ m s> ffo CQ §- > 5" M W CD Q. o 5' S 5' CD CO CO O o 0) Q) co = fl P 0) 3 5' § -3 8 -P ui ro -vj to 0> Q> CD (D O (3 Q. 5 sr co 5 CD * *£* "$* C CO ro fO ^*o| oo, CO B-s co o 00 O ro 9 i -la en 5' _ ?f - 3J TI m o Q (D ;±: 00 to^ -n S. - ~~ 6 cp 2.

76

Effect of copper doping on structural, optical and electrical properties of Cd0·8Zn0·2S films prepared by chemical bath deposition  

Science Journals Connector (OSTI)

Cd 0·8Zn 0·2S:Cu films of 1 ·3–6 ·1 mole percentage of copper have been grown on mica substrate by using chemical bath deposition technique. The films have been characterized by using XRD, SEM and UV spectrophoto...

K HADASA; G YELLAIAH; M NAGABHUSHANAM

2014-02-01T23:59:59.000Z

77

Use of high-granularity position sensing to correct response non-uniformities of CdZnTe detectors  

SciTech Connect

CdZnTe (CZT) is a promising medium for room-temperature gamma-ray detectors. However, the low production yield of acceptable quality crystals hampers the use of CZT detectors for gamma-ray spectroscopy. Significant efforts have been directed towards improving quality of CZT crystals to make them generally available for radiation detectors. Another way to address this problem is to implement detector designs that would allow for more accurate and predictable correction of the charge loss associated with crystal defects. In this work, we demonstrate that high-granularity position-sensitive detectors can significantly improve the performance of CZT detectors fabricated from CZT crystals with wider acceptance boundaries, leading to an increase of their availability and expected decrease in cost.

Bolotnikov, A. E., E-mail: bolotnik@bnl.gov; Camarda, G. S.; Cui, Y.; De Geronimo, G.; Fried, J.; Hossain, A.; Mahler, G.; Maritato, M.; Marshall, M.; Roy, U.; Vernon, E.; Yang, G.; James, R. B. [Department of Non-proliferation and National Security, Brookhaven National Laboratory, Upton, New York 11793-5000 (United States); Lee, K. [Korea University, 161 Jeongneung-ro, Seongbuk-gu, Seoul, 136-855 (Korea, Republic of); Petryk, M. [State University of New York at Binghamton, Binghamton, New York 13902 (United States)

2014-06-30T23:59:59.000Z

78

Sub-keV resolution detection with Cd{sub 1{minus}x}Zn{sub x}Te detectors  

SciTech Connect

Preliminary investigations were carried out to evaluate the resolution of Cd{sub 1{minus}x}Zn{sub x}Te detectors at temperatures achievable with commercially available, low power Peltier refrigerators. Detectors were in the form of cubes, 2 mm on a side. They were tested using a preamplifier with optical feedback. The input FET was cooled along with the detectors. Resolutions of 409 eV and 326 eV were observed at the 5.9 keV line of Fe-55, at temperatures of {minus}10 C and {minus}20 C, respectively. Results indicate that a straightforward extension of this work will lead to resolutions well below 200 eV.

Butler, J.F.; Apotovsky, B. [Aurora Technologies Corp., San Diego, CA (United States); Niemelae, A.; Sipilae, H. [Outokumpu Instruments OY, Espoo (Finland)

1993-12-31T23:59:59.000Z

79

Preparation of titania nanotube-Cd0.65Zn0.35S nanocomposite by a hydrothermal sulfuration method for efficient visible-light-driven photocatalytic hydrogen production  

Science Journals Connector (OSTI)

Abstract Titania nanotube-Cd0.65Zn0.35S nanocomposite (Cd0.65Zn0.35S-TiO2) was synthesized from titanate nanotubes for ion change of Cd2+ and Zn2+ followed by hydrothermal sulfuration treatment using thiourea as sulfur source. The Cd0.65Zn0.35S-TiO2 with enhanced crystallinity of TiO2 nanotube can be obtained by increasing hydrothermal temperature from 90 °C to 120 °C. And further increasing hydrothermal temperature to 150 °C, TiO2 nanotubes collapse and transform into irregular shaped particles. The photocatalytic activity for hydrogen production of the prepared Cd0.65Zn0.35S-TiO2 with different hydrothermal temperature was investigated under visible-light irradiation. The result shows that the Cd0.65Zn0.35S-TiO2 with hydrothermal temperature of 120 °C presents the highest hydrogen evolution rate and photostability, which can be attributed to a rapid charge transfer at the interface between Cd0.65Zn0.35S and TiO2 nanotube due to the increased crystallinity and unique 1-D nanotubular structure of TiO2.

Juan Li; Liangpeng Wu; Lizhen Long; Min Xi; Xinjun Li

2014-01-01T23:59:59.000Z

80

Investigation of pure green-colour emission from inorganic-organic hybrid LEDs based on colloidal CdSe/ZnS quantum dots  

Science Journals Connector (OSTI)

We studied the operation characteristics of inorganic-organic hybrid light emitting devices (HLEDs) that have a green CdSe/ZnS quantum dot (QD) emitting layer (EML) and a 1,3,5-tris(N-phenylbenzimidazol-2-yl)-benzene (TPBi) hole blocking layer (HBL). A series of devices with a different thickness TPBi HBL all showed pure electroluminescence that is consistent with green photoluminescence of colloidal QDs without any colour contamination from organic layers. The best performance, which we attributed to more balanced charge carrier supply to a QD EML and efficient energy transfer from excitions in a TPBi layer to QDs, was observed from the device with a TPBi HBL of 20 nm thickness: the deep green emission with the luminous efficiency of 1.55 cd/A at standard video brightness (200 cd/m²) and the luminance as large as ~1800 cd/m².

Nguyen Huu Tuan; Soonil Lee; Nguyen Nang Dinh

2013-01-01T23:59:59.000Z

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81

BNL | Jörg Schwender  

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

Jörg Schwender Jörg Schwender Background Plant biomass is of increasing importance as a renewable resource for the production of fuels and of chemical feedstocks that replace petroleum based materials. As a basis for rational engineering of seeds and other plant storage organs, our goal is to increase the basic understanding of the functioning of storage metabolism in plants. Of central interest here is the process of allocation of maternal carbon and nitrogen resources to different storage products (oil, protein and starch) in a sink organ like a developing seed. Schematic of carbon flow during storage synthesis in developing seeds of Brassica napus based on metabolic flux analysis (See publications below). PPP = pentose phosphate pathway; TAG = triacylglycerol. Research Interests

82

CD  

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

a a o O c- (D 3 m cn o 5- sl) < cn . ft, =. 0. CD --o O O (.0 RESPONSIVE TO THE NEEDS OF ENVIRONMENTAL MANAGEMENT 0 0 0 -1 0 CD 13 < 0 tl) 5' CD cn 51" INTERNATIONAL TECHNOLOGY CORPORATION Tritium Migration and Hydrogeological Studies in the Vicinity of Plot M Palos Forest Preserve * * INTERNATIONAL TECHNOLOGY CORPORATION Table of Contents List of Tables iii List of Figures iv 1.0 Introduction 1-1 1.1 History of the Site 1-1 1.2 Description of Radioactive Wastes 1-4 1.3 Radiological Characteristics of Tritium 1-5 1.4 Objectives and Scope of This Study 1-7 2.0 Description of the Area 2-1 2.1 Location 2-1 2.2 Physiography 2-1 2.3 Surface Drainage 2-2 2.4 Vegetation 2-3 3.0 Previous Investigations and Monitoring Programs

83

Deriving confinement via RG decimations  

E-Print Network (OSTI)

We present the general framework and building blocks of a recent derivation of the fact that the SU(2) LGT is in a confining phase for all values of the coupling $0 < \\beta < \\infty$, for space-time dimension $d \\leq 4$. The method employs approximate but explicitly computable RG decimations that are shown to constrain the exact partition function and order parameters from above and below, and flow from the weak to the strong coupling regime without encountering a fixed point.

E. T. Tomboulis

2007-10-10T23:59:59.000Z

84

Persisting impact of historical mining activity to metal (Pb, Zn, Cd, Tl, Hg) and metalloid (As, Sb) enrichment in sediments of the Gardon River,  

E-Print Network (OSTI)

) enrichment in sediments of the Gardon River, Southern France Eléonore Resongles a, , Corinne Casiot a , Rémi in sediments was investigated in multi-source context. · Metal(loid) enrichment during the 19th century in sediment. · Cd, Zn and Pb may be mobilized under changing environmental conditions. a b s t r a c ta r t i

Demouchy, Sylvie

85

Development of ZnTe:Cu Contacts for CdTe Solar Cells: Cooperative Research and Development Final Report, CRADA Number CRD-08-320  

SciTech Connect

The main focus of the work at NREL was on the development of Cu-doped ZnTe contacts to CdTe solar cells in the substrate configuration. The work performed under the CRADA utilized the substrate device structure used at NREL previously. All fabrication was performed at NREL. We worked on the development of Cu-doped ZnTe as well as variety of other contacts such as Sb-doped ZnTe, CuxTe, and MoSe2. We were able to optimize the contacts to improve device parameters. The improvement was obtained primarily through increasing the open-circuit voltage, to values as high as 760 mV, leading to device efficiencies of 7%.

Dhere, R.

2012-04-01T23:59:59.000Z

86

Preparation of water soluble L-arginine capped CdSe/ZnS QDs and their interaction with synthetic DNA: Picosecond-resolved FRET study  

SciTech Connect

Graphical abstract: Förster resonance energy transfer (FRET) studies on the interaction of water soluble arginine-capped CdSe/ZnS QDs with ethidium bromide (EB) labeled synthetic dodecamer DNA. Highlights: ? We have solubilized CdSe/ZnS QD in water replacing their TOPO ligand by L-arginine. ? We have studied arginine@QD–DNA interaction using FRET technique. ? Arginine@QDs act as energy donor and ethidium bromide-DNA acts as energy acceptor. ? We have applied a kinetic model to understand the kinetics of energy transfer. ? Circular dichroism studies revealed negligible perturbation in the DNA B-form in the arg@QD-DNA complex. -- Abstract: We have exchanged TOPO (trioctylphosphine oxide) ligand of CdSe/ZnS core/shell quantum dots (QDs) with an amino acid L-arginine (Arg) at the toluene/water interface and eventually rendered the QDs from toluene to aqueous phase. We have studied the interaction of the water soluble Arg-capped QDs (energy donor) with ethidium (EB) labeled synthetic dodecamer DNA (energy acceptor) using picoseconds resolved Förster resonance energy transfer (FRET) technique. Furthermore, we have applied a model developed by M. Tachiya to understand the kinetics of energy transfer and the distribution of acceptor (EB-DNA) molecules around the donor QDs. Circular dichroism (CD) studies revealed a negligible perturbation in the native B-form structure of the DNA upon interaction with Arg-capped QDs. The melting and the rehybridization pathways of the DNA attached to the QDs have been monitored by the CD which reveals hydrogen bonding is the associative mechanism for interaction between Arg-capped QDs and DNA.

Giri, Anupam; Goswami, Nirmal [Department of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700 098 (India)] [Department of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700 098 (India); Lemmens, Peter [Institute for Condensed Matter Physics, Technical University of Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig (Germany)] [Institute for Condensed Matter Physics, Technical University of Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig (Germany); Pal, Samir Kumar, E-mail: skpal@bose.res.in [Department of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700 098 (India)

2012-08-15T23:59:59.000Z

87

Two new Zn(II) and Cd(II) coordinastion polymers based on amino-tetrazole and phenylcarboxylate: Syntheses, topological structures and photoluminescent properties  

SciTech Connect

Two Zn(II) and Cd(II) compounds with the in-situ generated ligand of 5-amino-tetrazolate (atz{sup -}) were prepared from the hydrothermal reactions of the corresponding Cd or Zn(II) salts with phenylcarboxylate, and characterized by elemental analysis, IR spectroscopy, and TGA. The results of X-ray crystallographic analysis reveal that compound [Zn{sub 2}(BZA)(atz){sub 2}(OH)]{sub n} (1) (BZA=benzoic acid) presents a two-dimensional (2D) 'hcb' topological network constructed from the ZnN{sub 2}O{sub 2} tetrahedra. In compound [Cd{sub 6}(atz){sub 6}(PTA){sub 3}]{sub n} (2) (PTA=terephthalic acid), the identical [Cd{sub 3}(atz){sub 3})]{sup 3+}{sub n} clusters are connected by atz ligands to generate a 2D cationic layer, and the neighboring cationic layers are pillared by PTA giving birth to 3D network. After simplifying, the complicated 3D network of 2 can be presented as an unprecedented (4, 4, 10)-connected trinodal topology. The formations of the structures show a good example that using the combination of the in-situ generated ligand and other coligand synthetic strategy can construct interesting topological structures. The thermal stabilities and fluorescent properties of the complexes have also been studied. - Graphical abstract: Two d{sup 10} metal complexes have been synthesized by employing mixed-ligand synthetic approach. Complex 1 presents a 2D 'hcb' topological network. Complex 2 shows an unprecedented (4, 4, 10)-connected trinodal topology. Highlights: Black-Right-Pointing-Pointer Coligand synthetic strategy was applied to obtain new MOFs with useful properties. Black-Right-Pointing-Pointer Two new Zn(II) and Cd(II) complexes were constructed from the mixed-ligand. Black-Right-Pointing-Pointer Topologically, compound 2 presented an unprecedented (4, 4, 10)-connected trinodal topology. Black-Right-Pointing-Pointer The two compounds may be excellent candidates for potential photoactive material.

Liu, Dong-Sheng, E-mail: liudongsheng@jgsu.edu.cn [School of Chemistry and Chemical Engineering, Institute of Applied Chemistry, Jinggangshan University, Ji'an, Jiangxi 343009 (China) [School of Chemistry and Chemical Engineering, Institute of Applied Chemistry, Jinggangshan University, Ji'an, Jiangxi 343009 (China); College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350108 (China); Sui, Yan; Chen, Weng-Tong; Huang, Jian-Gen [School of Chemistry and Chemical Engineering, Institute of Applied Chemistry, Jinggangshan University, Ji'an, Jiangxi 343009 (China)] [School of Chemistry and Chemical Engineering, Institute of Applied Chemistry, Jinggangshan University, Ji'an, Jiangxi 343009 (China); Chen, Jian-Zhong [College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350108 (China)] [College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350108 (China); Huang, Chang-Cang, E-mail: cchuang@fzu.edu.cn [College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350108 (China)] [College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350108 (China)

2012-12-15T23:59:59.000Z

88

Decay of electronic excitations in CdS and CdS/ZnS colloidal quantum dots: spectral and kinetic investigations  

Science Journals Connector (OSTI)

Using the spectral methods of induced absorption, luminescence, and photostimulated luminescence flash, we have experimentally investigated processes of decay of electronic excitations in CdS colloidal quantum...

M. S. Smirnov; D. I. Stasel’ko; O. V. Ovchinnikov…

2013-11-01T23:59:59.000Z

89

Quantum-dot light-emitting diodes utilizing CdSe/ZnS nanocrystals embedded in TiO{sub 2} thin film  

SciTech Connect

Quantum-dot (QD) light-emitting diodes (LEDs) are demonstrated on Si wafers by embedding core-shell CdSe/ZnS nanocrystals in TiO{sub 2} thin films via plasma-enhanced metallorganic chemical vapor deposition. The n-TiO{sub 2}/QDs/p-Si LED devices show typical p-n diode current-voltage and efficient electroluminescence characteristics, which are critically affected by the removal of QD surface ligands. The TiO{sub 2}/QDs/Si system we presented can offer promising Si-based optoelectronic and electronic device applications utilizing numerous nanocrystals synthesized by colloidal solution chemistry.

Kang, Seung-Hee; Kumar, Ch. Kiran; Kim, Eui-Tae [Department of Materials Science and Engineering, Chungnam National University, Daeduk Science Town, Daejeon 305-764 (Korea, Republic of); Lee, Zonghoon [National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 72-150, Berkeley, California 94720 (United States); Kim, Kyung-Hyun; Huh, Chul [Electronics and Telecommunications Research Institute, Daeduk Science Town, Daejeon 305-350 (Korea, Republic of)

2008-11-10T23:59:59.000Z

90

Self assembly of CdSe/ZnS quantum dots for organic/inorganic light emitting devices for the next generation display technology  

Science Journals Connector (OSTI)

We have investigated the effect of quantum dot (QD) concentrations, spin speed and temperature on the self assembly of CdSe/ZnS QDs on substrate for the optimisation of QDs used in organic light-emitting devices (OLEDs) applications. The atomic force microscopy (AFM) results showed that surface morphology and coverage are varied with different process parameters. There is also a tendency for the formation of aggregates/islands on a smooth substrate that could be caused by spinodal phase separation. The uniform distribution of QDs with controllable density was achieved using the conventional spin-coating method. We fabricated and investigated the effect of CdSe/ZnS QD concentrations on the self-assembly hybrid organic/inorganic light emitting diodes (QD-OLEDs) for the tuning of performance. There was a QD threshold concentration below which there was no emission from the QDs. The estimated QD concentration was around 9 × 1011 cm?2 for the best performance of QD-OLED. The annealing of QD-OLED increased the QD emission about three times. No wavelength shift was observed in the electroluminescence spectra from the QD before and after the annealing of QD-OLEDs. The mechanism of this emission improvement is discussed.

A. Uddin; C.C. Teo

2009-01-01T23:59:59.000Z

91

Linking heavy metal bioavailability (Cd, Cu, Zn and Pb) in Scots pine needles to soil properties in reclaimed mine areas  

E-Print Network (OSTI)

concentrations in mine soils. An exception was in the case of Cd in soils on sand quarry and hard coal spoil heap. Introduction Post-mining facilities such as open pit quarries, lignite mine spoil heaps, open pit sulphur mine

Battles, John

92

Possibility of doping and using ZnSe, CdS, and GaP layers as down converters of Si and CuInSe2 solar cells  

Science Journals Connector (OSTI)

The possibility and reasonability of developing down converters of Si and CuInSe2 solar cells based on Ge2P- and GaSb-doped GaP, ZnTe, and CdS is discussed. The case is considered when...p–n heterojunction, and t...

M. S. Saidov

2007-09-01T23:59:59.000Z

93

COMPARISON OF TRAP STATES BETWEEN CIGSS/CdS/ZnO AND Cd PE CIGSS/ZnO CELLS P.K. Johnson, A.O. Pudov, J.R. Sites  

E-Print Network (OSTI)

cost. The best photovoltaic junctions are produced when a thin CdS layer is deposited by chemical commercial photovoltaic modules. We use current-voltage, quantum efficiency, capacitance Defects - 3 1. INTRODUCTION Polycrystalline CIGS thin film photovoltaic cells are known for their high

Sites, James R.

94

1-Dodecane-sulfonic-acid-sodium-salt(LAS) assisted hydrothermal synthesis of Cd{sub x}Zn{sub 1-x}S solid solution as efficient photocatalysts under visible light irradiation  

SciTech Connect

With anionic surfactant LAS assisted, series of zinc cadmium sulfide semiconductor photocatalysts were synthesized by hydrothermal method. These products were characterized by X-ray diffraction (XRD), UV-Vis absorption spectra (UV-Vis) and scanning electron microscopy (FESEM). The photocatalytic activities of as-prepared samples were evaluated by photocatalytic hydrogen production from water under visible-light irradiation. The best synthesis parameters are: Composition 0.9:0.1 (Cd:Zn molar ratio), Temperature 160 deg. C, Hydrothermal Time 48 Hour, LAS Concentration 1.7 mmol/L, the maximum visible-light-catalytic hydrogen production rate is 161.25 {mu}mol/h (lambda>430 nm) which is higher than those of by coprecipitation method. The experiment results indicate that surfactant assisted hydrothermal method is an effective way to get highly active CdZnS solid solution photocatalyst.

Jia, B.; Guo, L. J. [State Key Laboratory of Multiphase Flow in power Engineering, Xi'an Jiaotong University (China)

2010-03-01T23:59:59.000Z

95

Development of High-Efficiency Cd-Free Cu(In,Ga)Se2 Solar Cells Using Chemically Deposited ZnS Film  

Science Journals Connector (OSTI)

A ZnS film covered completely the CIGS surface without pinholes. The thickness of the ZnS film could be controlled according to the cycle number of the CBD process. As the thickness of the ZnS film increased, ...

Dong Hyeop Shin; Seung Tae Kim…

2014-01-01T23:59:59.000Z

96

BIOMEDICAL ENGINEERING BSE PLAN REQUIREMENTS Campus: UMICH RG = Requirement Group  

E-Print Network (OSTI)

BIOMEDICAL ENGINEERING BSE PLAN REQUIREMENTS Campus: UMICH RG = Requirement Group Career: UENG RQ = Requirement Program: LN = Line Plan: 0880BSE Sub-Plan: RG 6856 BIOMEDICAL ENGINEERING MAJOR REQUIREMENTS Effective FA05/1560 (09/06/2005) RQ 4996 Program Subjects Effective FA05/1560 (09/06/2005) LN 0010 BIOMEDE

Shyy, Wei

97

Effect of shells on photoluminescence of aqueous CdTe quantum dots  

SciTech Connect

Graphical abstract: Size-tunable CdTe coated with several shells using an aqueous solution synthesis. CdTe/CdS/ZnS quantum dots exhibited high PL efficiency up to 80% which implies the promising applications for biomedical labeling. - Highlights: • CdTe quantum dots were fabricated using an aqueous synthesis. • CdS, ZnS, and CdS/ZnS shells were subsequently deposited on CdTe cores. • Outer ZnS shells provide an efficient confinement of electron and hole inside the QDs. • Inside CdS shells can reduce the strain on the QDs. • Aqueous CdTe/CdS/ZnS QDs exhibited high stability and photoluminescence efficiency of 80%. - Abstract: CdTe cores with various sizes were fabricated in aqueous solutions. Inorganic shells including CdS, ZnS, and CdS/ZnS were subsequently deposited on the cores through a similar aqueous procedure to investigate the effect of shells on the photoluminescence properties of the cores. In the case of CdTe/CdS/ZnS quantum dots, the outer ZnS shell provides an efficient confinement of electron and hole wavefunctions inside the quantum dots, while the middle CdS shell sandwiched between the CdTe core and ZnS shell can be introduced to obviously reduce the strain on the quantum dots because the lattice parameters of CdS is situated at the intermediate-level between those of CdTe and ZnS. In comparison with CdTe/ZnS core–shell quantum dots, the as-prepared water-soluble CdTe/CdS/ZnS quantum dots in our case can exhibit high photochemical stability and photoluminescence efficiency up to 80% in an aqueous solution, which implies the promising applications in the field of biomedical labeling.

Yuan, Zhimin; Yang, Ping, E-mail: mse_yangp@ujn.edu.cn

2013-07-15T23:59:59.000Z

98

Five new Zn(II) and Cd(II) coordination polymers constructed by 3,5-bis-oxyacetate-benzoic acid: Syntheses, crystal structures, network topologies and luminescent properties  

SciTech Connect

Five Zn(II) and Cd(II) coordination polymers, [Zn{sub 2}(BOABA)(bpp)(OH)]{center_dot}0.5H{sub 2}O (1), [Cd{sub 3}(BOABA){sub 2}(bpp){sub 2}(H{sub 2}O){sub 6}]{center_dot}2H{sub 2}O (2), [Cd{sub 3}(BOABA){sub 2}(2,2 Prime -bipy){sub 3}(H{sub 2}O){sub 4}]{center_dot}5.5H{sub 2}O (3), [CdNa(BOABA)(H{sub 2}O)]{sub 2}{center_dot}H{sub 2}O (4) and [Cd{sub 2}(BOABA)(bimb)Cl(H{sub 2}O){sub 2}]{center_dot}H{sub 2}O (5) (H{sub 3}BOABA=3,5-bis-oxyacetate-benzoic acid, bpp=1,3-bi(4-pyridyl)propane, 2,2 Prime -bipy=2,2 Prime -bipyridine, bimb=1,4-bis(imidazol-1 Prime -yl)butane), have been solvothermally synthesized and characterized by single-crystal X-ray diffraction, elemental analyses, IR spectra and TG analyses. 1 is an uninodal 4-connected 2D square grid network based on binuclear zinc clusters. 2 is 2D wavelike layer structure and further linked by hydrogen bonds into the final 3D (5,6,6)-connected topology network. 3 is 3-connected 2D topology network and the 2,2 Prime -bipy ligands decorate in two different types. 4 is a (4,8)-connected 2D topology network with heterocaryotic {l_brace}Cd{sub 2}Na{sub 2}{r_brace} clusters and BOABA{sup 3-} ligands. 5 can be rationalized as a (3,10)-connected 3D topology network with tetranuclear {l_brace}Cd{sub 4}Cl{sub 2}{r_brace} clusters and BOABA{sup 3-} ligands. Meanwhile, photoluminescence studies revealed that these five coordination polymers display strong fluorescent emission bands in the solid state at room temperature. - Graphical abstract: Five new d{sup 10} metal(II) coordination polymers based on H{sub 3}BOABA ligand were obtained and characterized. They display different topological structures and luminescent properties. Highlights: Black-Right-Pointing-Pointer Five d{sup 10} metal(II) polymers based on 3,5-bis-oxyacetate-benzoic acid were obtained. Black-Right-Pointing-Pointer The polymers were structurally characterized by single-crystal X-ray diffraction. Black-Right-Pointing-Pointer Polymers 1-5 display different topological structures. Black-Right-Pointing-Pointer They show strong fluorescent emission bands in the solid state.

Jiang Xianrong; Yuan Hongyan [Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 (China); Feng Yunlong, E-mail: sky37@zjnu.edu.cn [Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 (China)

2012-07-15T23:59:59.000Z

99

Atomic collapse in graphene and cyclic RG flow  

E-Print Network (OSTI)

In this Letter we consider the problem of screening of external charge in graphene from the cyclic RG flow viewpoint. The analogy with conformal Calogero model is used to suggest the interpretation of the tower of resonant states as tower of Efimov states.

Alexander Gorsky; Fedor Popov

2013-12-28T23:59:59.000Z

100

RG&E - Residential Efficiency Program | Department of Energy  

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

- Residential Efficiency Program - Residential Efficiency Program RG&E - Residential Efficiency Program < Back Eligibility Multi-Family Residential Residential Savings Category Appliances & Electronics Commercial Lighting Lighting Program Info Funding Source PSC-mandated System Benefits Charge (SBC) State New York Program Type Utility Rebate Program Rebate Amount Refrigerator Recycling: $50 rebate and free removal Multifamily Dwelling Units: 6 free CFLS and smart power strips Multifamily Common Area Ligting: 50% off custom lighting upgrades RG&E is offering residential electric customers rebates for recycling refrigerators, and its multifamily customers free CFLs, smart power strips and 50% off common area lighting equipment. All equipment requirements must be met in order to receive rebates. See the program website for details.

Note: This page contains sample records for the topic "rg zn cd" 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

Alternating Current Driven Electroluminescence from ZnSe/ZnS:Mn/  

E-Print Network (OSTI)

phosphor impurity dopants in ZnSe or other wide band gap host nanocrystals. Lumines- cence of CdS of alternating current thin-film electroluminescent (AC-TFEL) devices using phosphor-doped nanocrystals-TFEL devices consist of a phosphor layer, such as manganese-doped zinc sulfide (ZnS:Mn), vertically sandwiched

102

Structure and luminescence of annealed nanoparticles of ZnS:Mn A. D. Dinsmore,a)  

E-Print Network (OSTI)

,10 Y2O3:Eu,11­13 LaPO4:Eu, Ce and Tb,14 CdS:Mn,15 CdSe:Mn,16 ZnS:Cu,17 ZnS:Tb,18 and ZnS:Mn,19­32 which temperatures5,6 and pressures.7,8 In addition to their funda- mental interest, doped semiconductor describe experimental studies of the structure and luminescence of nanoparticles of ZnS doped with Mn

Dinsmore, Tony

103

CdS nanoparticles sensitization of Al-doped ZnO nanorod array thin film with hydrogen treatment as an ITO/FTO-free photoanode for solar water splitting  

Science Journals Connector (OSTI)

Aluminum-doped zinc oxide (AZO) nanorod array thin ... region, it is sensitized by cadmium sulfide (CdS) nanoparticles which efficiently increase the absorption around 460 nm. The CdS nanoparticles-sensitized AZO...

Chih-Hsiung Hsu; Dong-Hwang Chen

2012-10-01T23:59:59.000Z

104

GaN/ZnO and AlGaN/ZnO heterostructure LEDs: growth, fabrication, optical and electrical characterization  

E-Print Network (OSTI)

radiation hardness than Si, GaAs, CdS and GaN, therefore it should be suitable for space applications. Last novel optoelectronic devices circumventing the problem of p-type doping of ZnO. In such Al devices become reality: the problem of p-type doping of ZnO. So far, there is no way to reliably produce

Wetzel, Christian M.

105

RG&E (Electric) - Commercial and Industrial Efficiency Program | Department  

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

RG&E (Electric) - Commercial and Industrial Efficiency Program RG&E (Electric) - Commercial and Industrial Efficiency Program RG&E (Electric) - Commercial and Industrial Efficiency Program < Back Eligibility Agricultural Commercial Fed. Government Industrial Institutional Local Government Nonprofit State Government Tribal Government Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Other Heat Pumps Appliances & Electronics Commercial Lighting Lighting Maximum Rebate No maximum per customer rebate; however, NYSEG/RG&E reserve the right to cap the rebate to any one customer Program Info State New York Program Type Utility Rebate Program Rebate Amount HVAC: Prescriptive incentives vary A/C or Heat Pump A/C or Heat Pump > 63 tons: $25/ton + $5/ton for each 0.1 EER above 9.7 Water Cooled Chillers: $6/ton or $15/ton + $2-$8/ton for each 0.01 kW/ton

106

RG&E (Gas) - Residential Efficiency Program (New York) | Department of  

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

RG&E (Gas) - Residential Efficiency Program (New York) RG&E (Gas) - Residential Efficiency Program (New York) RG&E (Gas) - Residential Efficiency Program (New York) < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Appliances & Electronics Water Heating Maximum Rebate Cannot exceed total installed price. Program Info Funding Source PSC-mandated System Benefits Charge (SBC) State New York Program Type Utility Rebate Program Rebate Amount Furnace: $140-$600 (w/ECM) Water Boiler: $350-$1,000 Steam Boiler: $350 Boiler Reset Control: $100 Indirect Water Heater: $210 Programmable Thermostat: $18 RG&E is offering residential natural gas customers rebates for installing energy efficient equipment. Customers can complete one rebate application for multiple pieces of equipment as long as they are not the same type of

107

ARM-96-003 UAV Fall 1996 Flight Series Mission Summary RG Ellingson  

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

6-003 UAV Fall 1996 Flight Series Mission Summary RG Ellingson Fall 1996 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the...

108

E-Print Network 3.0 - arboreum cv rg8 Sample Search Results  

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

Powered by Explorit Topic List Advanced Search Sample search results for: arboreum cv rg8 Page: << < 1 2 3 4 5 > >> 1 Plant Molecular Biology 51: 313325, 2003. 2003 Kluwer Academic...

109

Microsoft Word - RBL_Jan_2009_RG13-1-398.doc  

Office of Legacy Management (LM)

not available The subsurface elevation is at the bottom of the well. Link to Colorado Oil and Gas Conservation Commission information about well RG 13-1-398: http:...

110

CdS nanoclusters doped with divalent atoms  

Science Journals Connector (OSTI)

ZnS and CdS small nanoclusters have been predicted to trap ... studied the structure and stability of (X@(CdS) i ) ±2 with X = Be, Mg, Ca, O, S, Se and i...=9, 12, 15, 16 on the...

Elisa Jimenez-Izal; Jon M. Azpiroz; Riti Gupta…

2014-06-01T23:59:59.000Z

111

Pressure-induced crystallization of vitreous ZnCl2  

Science Journals Connector (OSTI)

In situ Raman scattering measurements have been obtained for vitreous ZnCl2 compressed isothermally to 25 GPa. The Raman spectra indicate that, in contrast to other tetrahedral framework glasses, when compressed at room temperature glassy ZnCl2 crystallizes to the high-pressure CdCl2-structured phase between 2.3 and 3.0 GPa; on decompression, the high-pressure phase remains until 1.1 GPa, where it then reverts to ?-ZnCl2. On recompression the ?-ZnCl2 phase converts to the CdCl2 phase at 2.5 GPa and backtransforms at 1.1 GPa upon decompression. We suggest that a density-driven phase separation in the supercooled liquid regime underlies the amorphous-to-crystalline transition of ZnCl2 and other glassy materials.

Cynthia H. Polsky; Luz Maria Martinez; Kurt Leinenweber; Mary A. VerHelst; C. Austen Angell; George H. Wolf

2000-03-01T23:59:59.000Z

112

RG&E (Gas) - Commercial and Industrial Efficiency Program | Department of  

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

Commercial and Industrial Efficiency Program Commercial and Industrial Efficiency Program RG&E (Gas) - Commercial and Industrial Efficiency Program < Back Eligibility Agricultural Commercial Industrial Institutional Local Government Multi-Family Residential Nonprofit State Government Tribal Government Savings Category Heating & Cooling Commercial Heating & Cooling Heating Other Maximum Rebate No maximum per customer rebate; however, NYSEG/RG&E reserve the right to cap the rebate to any one customer. Program Info State New York Program Type Utility Rebate Program Rebate Amount HVAC: Prescriptive incentives vary Condensing Boilers: $1000-$6000 Hydronic Boilers: $500-$4000 Steam Boilers: $200 Furnaces: $100 Programmable Thermostats: $25 Boiler Reset Controls: $150 Provider NYSEG/RGE NYSEG and RG&E offer rebates to non-residential customers installing energy

113

RG&E (Electric) - Small Business Lighting Retrofit Program | Department of  

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

Small Business Lighting Retrofit Program Small Business Lighting Retrofit Program RG&E (Electric) - Small Business Lighting Retrofit Program < Back Eligibility Commercial Savings Category Appliances & Electronics Commercial Lighting Lighting Program Info Funding Source System Benefits Charge State New York Program Type Utility Rebate Program Rebate Amount Energy Assessment: Free Lighting Retrofit: 70% of cost Provider RG&E and NYSEG RG&E offers a lighting incentive program designed to serve small business customers with a demand of 100 kilowatts (kW) or less. These small business customers may schedule a free energy assessment and then receive a 70% discount on the installed cost of recommended lighting measures. Eligible lighting measures include the retrofitting of fluorescent fixtures,

114

Microsoft Word - RBL_Jan_2009_RG24-13-398.doc  

Office of Legacy Management (LM)

24-13-398 24-13-398 Well: Gas production well, Federal RG 24-13-398, API # 05-103-10702. Operator: Williams Production RMT, Incorporated Sampler: U.S. Department of Energy, Office of Legacy Management, Grand Junction, CO. Date of Sampling Event: 7 January 2009 Samples of natural gas and produced water were collected from production well Federal RG 24-13-398. Location data for the surface collection point and the sample location are given in Table 1. A description of each sample collected is listed in Table 2. Table 1. Well Federal RG 24-13-398, API # 05-103-10702 Sample Location Distance (feet) from Surface Sample Point Location Location Sea Level elevation (feet) N-S Section line E-W Section line Latitude (NAD 27) Longitude (NAD 27) Distance

115

Synthesis and electronic properties of ZnO/CoZnO core-shell nanowires Song Han, Daihua Zhang, and Chongwu Zhoua  

E-Print Network (OSTI)

of interesting DMS nanowires including Mn-doped GaN,18,19 CdS, and ZnS Ref. 19 have been synthesized- hibit ferromagnetism above room temperature when doped with substitutional Mn2+ ions and sufficiently high levels of p-type dopants. Sato et al.8 further revealed that n-type Co- doped ZnO would remain

Zhou, Chongwu

116

ZnO/ZnS(O,OH)/Cu(In,Ga)Se2/Mo SOLAR CELL WITH 18.6% EFFICIENCY M.A. Contreras, 2  

E-Print Network (OSTI)

) photovoltaic technology is motivated primarily by the potential to enhance solar cell current generationZnO/ZnS(O,OH)/Cu(In,Ga)Se2/Mo SOLAR CELL WITH 18.6% EFFICIENCY 1 M.A. Contreras, 2 T. Nakada, 2 M of 18.6% for Cu(In,Ga)Se2 solar cells that incorporate a ZnS(O,OH) buffer layer as an alternative to Cd

Sites, James R.

117

Complete CFD analysis of a Velocity XL-5 RG with flight-test verification  

E-Print Network (OSTI)

The Texas A&M Flight Research Laboratory (FRL) recently received delivery of its newest aircraft, the Velocity XL-5 RG. The Velocity can fly faster than the other aircraft owned by the FRL and does not have a propeller in the front of the aircraft...

Schouten, Shane Michael

2008-10-10T23:59:59.000Z

118

Luminescence studies of localized gap states in colloidal ZnS nanocrystals D. Denzler, M. Olschewski, and K. Sattlera)  

E-Print Network (OSTI)

form are the II-VI semi- conductor compounds CdS and ZnS.14 ZnS has a band gap of 3.6 eV at 300 K spectra show a broad ultraviolet peak at around 420 nm. ZnS can be doped with Mn very easily, where few Mn atoms substitute for Zn atoms.18 This doping causes a visible orange luminescence at about 590 nm. Both

Sattler, Klaus

119

Zn3P2 and Cu2O substrates for solar energy conversion.  

E-Print Network (OSTI)

??Zinc phosphide (Zn3P2) and cuprous oxide (Cu2O) are promising and earth-abundant alternatives to traditional thin film photovoltaics materials such as CIGS, CdTe, and a-Si. We… (more)

Kimball, Gregory Michael

2012-01-01T23:59:59.000Z

120

Band offsets for mismatched interfaces: The special case of ZnO...  

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

Abstract: High-quality planar interfaces between ZnO and CdTe would be useful in optoelectronic applications, but appear difficult to achieve given the rather different crystal...

Note: This page contains sample records for the topic "rg zn cd" 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

Synthesis of CdSe quantum dots for quantum dot sensitized solar cell  

SciTech Connect

CdSe Quantum Dots (QDs) of size 0.85 nm were synthesized using chemical route. ZnO based Quantum Dot Sensitized Solar Cell (QDSSC) was fabricated using CdSe QDs as sensitizer. The Pre-synthesized QDs were found to be successfully adsorbed on front ZnO electrode and had potential to replace organic dyes in Dye Sensitized Solar Cells (DSSCs). The efficiency of QDSSC was obtained to be 2.06 % at AM 1.5.

Singh, Neetu, E-mail: singh.neetu1985@gmail.com; Kapoor, Avinashi [Department of Electronic Science, University of Delhi South Campus, New Delhi-110 021 (India); Kumar, Vinod [Department of Physics, University of the Free State, Bloemfontein, ZA9300 (South Africa); Mehra, R. M. [School of Engineering and Technology, Sharda University, Greater Noida-201 306, U.P. (India)

2014-04-24T23:59:59.000Z

122

Growth of anisotropic one-dimensional ZnS nanostructures{ Daniel Moore and Zhong L. Wang*  

E-Print Network (OSTI)

is the most stable structure for CdS and CdSe and the other II­VI School of Materials Science and Engineering, and nano- combs.7,10,16­26 Recently, ZnS nanobelts have been doped with manganese for possible application

Wang, Zhong L.

123

Narrow band defect luminescence from Al-doped ZnO probed by scanning tunneling cathodoluminescence  

E-Print Network (OSTI)

Institute of Physics. Related Articles Effect of CdS film thickness on the photoexcited carrier lifetime of TiO2/CdS core-shell nanowires Appl. Phys. Lett. 99, 153111 (2011) Current underestimationNarrow band defect luminescence from Al-doped ZnO probed by scanning tunneling cathodoluminescence

Russell, Kasey

124

Pulsed laser deposition of Mn doped CdSe quantum dots for improved solar cell performance  

SciTech Connect

In this work, we demonstrate (1) a facile method to prepare Mn doped CdSe quantum dots (QDs) on Zn{sub 2}SnO{sub 4} photoanodes by pulsed laser deposition and (2) improved device performance of quantum dot sensitized solar cells of the Mn doped QDs (CdSe:Mn) compared to the undoped QDs (CdSe). The band diagram of photoanode Zn{sub 2}SnO{sub 4} and sensitizer CdSe:Mn QD is proposed based on the incident-photon-to-electron conversion efficiency (IPCE) data. Mn-modified band structure leads to absorption at longer wavelengths than the undoped CdSe QDs, which is due to the exchange splitting of the CdSe:Mn conduction band by the Mn dopant. Three-fold increase in the IPCE efficiency has also been observed for the Mn doped samples.

Dai, Qilin; Wang, Wenyong, E-mail: wwang5@uwyo.edu, E-mail: jtang2@uwyo.edu; Tang, Jinke, E-mail: wwang5@uwyo.edu, E-mail: jtang2@uwyo.edu [Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071 (United States); Sabio, Erwin M. [Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071 (United States)

2014-05-05T23:59:59.000Z

125

Mass of Cd104  

Science Journals Connector (OSTI)

A quadrupole-dipole-dipole-dipole spectrograph has been used with a 34.6 MeV proton beam to observe the Cd106(p, t)Cd104 reaction. The Q value is measured and a mass excess of -83 963(14) keV is inferred for Cd104.NUCLEAR REACTIONS Cd106(p, t)Cd104, E=34.6 MeV; Q value measured; mass excess inferred.

R. A. Dewberry; R. T. Kouzes; R. A. Naumann

1983-02-01T23:59:59.000Z

126

Telescope Guiding with a HyViSI H2RG Used in Guide Mode  

SciTech Connect

We report on long exposure results obtained with a Teledyne HyViSI H2RG detector operating in guide mode. The sensor simultaneously obtained nearly seeing-limited data while also guiding the Kitt Peak 2.1 m telescope. Results from unguided and guided operation are presented and used to place lower limits on flux/fluence values for accurate centroid measurements. We also report on significant noise reduction obtained in recent laboratory measurements that should further improve guiding capability with higher magnitude stars.

Simms, Lance M.; /SLAC; Figerb, Donald F.; Hanold, Brandon J.; /Rochester Inst. Tech.; Kahn, Steven M.; Gilmore, D.Kirk; /SLAC

2010-06-04T23:59:59.000Z

127

Analysis of the RNA-Editing Reaction of ADAR2 with Structural and Fluorescent Analogues of the GluR-B R/G Editing Site  

E-Print Network (OSTI)

R-B R/G Editing Site Olen M. Stephens, Hye Young Yi-Brunozzi, and Peter A. Beal* Department of Chemistry

Beal, Peter A.

128

Optical Stark Effect and Dressed Exciton States in a Mn-Doped CdTe Quantum Dot C. Le Gall,1  

E-Print Network (OSTI)

Optical Stark Effect and Dressed Exciton States in a Mn-Doped CdTe Quantum Dot C. Le Gall,1 A spin in a CdTe QD, like the strain- induced magnetic anisotropy or hyperfine coupling to the nuclei in this study is grown on a ZnTe substrate and contains CdTe QDs. A 6.5 monolayer thick CdTe layer is deposited

Boyer, Edmond

129

Structural, electronic and optical properties of CdxZn1 ? xS alloys from first-principles calculations  

Science Journals Connector (OSTI)

Abstract Structural, electronic and optical properties as well as structural phase transitions of ternary alloy CdxZn1 ? xS have been investigated using the first-principles calculations based on the density functional theory. We found that the crystal structure of CdxZn1 ? xS alloys transforms from wurtzite to zinc blende as Cd content of x = 0.83 . Effect of Cd content on electronic structures of CdxZn1 ? xS alloys has been studied. The bandgaps of CdxZn1 ? xS alloys with wurtzite and zinc blende structures decrease with the increase of Cd content. Furthermore, dielectric constant and absorption coefficient also have been discussed in detail.

Meiling Xu; Yongfeng Li; Bin Yao; Zhanhui Ding; Gang Yang

2014-01-01T23:59:59.000Z

130

Statistics of Single-Molecule Detection Jo1rg Enderlein,* David L. Robbins, W. Patrick Ambrose, Peter M. Goodwin, and  

E-Print Network (OSTI)

Statistics of Single-Molecule Detection Jo1rg Enderlein,* David L. Robbins, W. Patrick Ambrose for the calculation of the photon detection statistics in single-molecule detection experiments is presented are applied to the modeling of measured burst size distributions in single-molecule detection experiments

Enderlein, Jörg

131

Bioavailability of Cd, Zn and Se in two marine fish.  

E-Print Network (OSTI)

??It is valuable to study the bioavailability of trace metal in marine fish for their ecological and commercial importance. A series of experiments were conducted… (more)

Zhang, Li

2007-01-01T23:59:59.000Z

132

E. P. R. CHARACTERIZATION OF p-TYPE AS GROWN AND Cl-COMPENSATED THM GROWN CdTe  

E-Print Network (OSTI)

band gaps (ZnS, CdS) [1], only scarce observations on lower band-gap materials have been reported is observed in as-grown CdTe, and, even without illumination, a signal at g = 2.003 ± 0.001 appears in heavily-doped. For CdTe, only extrinsic centers induced by doping with transition metal or rare earth ions have been

Boyer, Edmond

133

7 valence band symmetry related hole fine splitting of bound excitons in ZnO observed in magneto-optical studies  

E-Print Network (OSTI)

in other wurtzite II-VI materials such as ZnSe and CdS.1 Theoretical calculations explained the reversed lithium doped ZnO grown by chemical-vapor deposition CVD on Tokyo Denpa substrates and on the I4 and I8

Nabben, Reinhard

134

CuIn1-xGaxS2 thin film solar cells with ZnxCd1-xS as heterojunction partner Bhaskar Kumar  

E-Print Network (OSTI)

CuIn1-xGaxS2 thin film solar cells with ZnxCd1-xS as heterojunction partner Bhaskar Kumar 1 , Parag). i:ZnO/Al:ZnO transparent and conducting window bilayer was deposited by RF magnetron sputtering

Sites, James R.

135

CdSxTe1-x Alloying in CdS/CdTe Solar Cells  

SciTech Connect

A CdS{sub x}Te{sub 1-x} layer forms by interdiffusion of CdS and CdTe during the fabrication of thin film CdTe photovoltaic (PV) devices. The CdS{sub x}Te{sub 1-x} layer is thought to be important because it relieves strain at the CdS/CdTe interface that would otherwise exist due to the 10% lattice mismatch between these two materials. Our previous work has indicated that the electrical junction is located in this interdiffused CdS{sub x}Te{sub 1-x} region. Further understanding, however, is essential to predict the role of this CdS{sub x}Te{sub 1-x} layer in the operation of CdS/CdTe devices. In this study, CdS{sub x}Te{sub 1-x} alloy films were deposited by radio-frequency magnetron sputtering and coevaporation from CdTe and CdS sources. Both radio-frequency-magnetron-sputtered and coevaporated CdS{sub x}Te{sub 1-x} films of lower S content (x < 0.3) have a cubic zincblende (ZB) structure akin to CdTe, whereas those of higher S content have a hexagonal wurtzite (WZ) structure like that of CdS. Films become less preferentially oriented as a result of a CdCl{sub 2} heat treatment at {approx}400 C for 5 min. Films sputtered in a 1% O{sub 2}/Ar ambient are amorphous as deposited, but show CdTe ZB, CdS WZ, and CdTe oxide phases after a CdCl{sub 2} heat treatment. Films sputtered in O{sub 2} partial pressure have a much wider bandgap than expected. This may be explained by nanocrystalline size effects seen previously for sputtered oxygenated CdS (CdS:O) films.

Duenow, J. N.; Dhere, R. G.; Moutinho, H. R.; To, B.; Pankow, J. W.; Kuciauskas, D.; Gessert, T. A.

2011-01-01T23:59:59.000Z

136

Bandgap engineering of CdxZn1xTe nanowires Keivan Davami,a  

E-Print Network (OSTI)

junction. These structures have been used in solar cells2,3 and eld effect transistors.4 Alloy nanowires device fabrication. Alloy nano- wires in various systems have been used to construct solar cells into a furnace. In a set of trial experiments, ZnTe (99.99% Aldrich) and CdTe (99.99% Aldrich) source powders

Cuniberti, Gianaurelio

137

Data:9d84b953-0c3d-4222-9cd9-89ad4177cd03 | Open Energy Information  

Open Energy Info (EERE)

b953-0c3d-4222-9cd9-89ad4177cd03 b953-0c3d-4222-9cd9-89ad4177cd03 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Florence Utility Comm Effective date: 2009/11/30 End date if known: Rate name: Rg-1 Residential Service Rural Rate Area Seasonal Three Phase Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0791 per kilowatt-hour.

138

Three-photon absorption in water-soluble ZnS nanocrystals Jun He, Wei Ji,a  

E-Print Network (OSTI)

:sapphire femtosecond lasers. This value is nearly one order of magnitude greater than that of CdS NCs, and four to five,4 research effort on their three-photon absorption 3PA is limited.5 Although high-quality CdS NCs show strong and fluorescence8 of doped ZnS NCs have been investigated. Furthermore, Nikesh et al. have re- ported large 2PA

Wei, Ji

139

Acceptors in ZnO nanocrystals. | EMSL  

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

in ZnO nanocrystals. Abstract: Zinc oxide (ZnO) has potential for a range of optoelectronic applications. In this work, we studied the defect properties of ZnO nanocrystals,...

140

The Environmental Guidebook Companion CD-ROM  

E-Print Network (OSTI)

Guidebook Companion CD-ROM By Jeff Staudinger Reviewed bywith Companion CD- ROM. Menlo Park, CA: Environmentaldocument collections on CD-ROM is gathering speed.

Stirling, Dale

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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

December 1999 NREL/SR-520-27666 A.D. Compaan, X. Deng, and R.G. Bohn  

E-Print Network (OSTI)

and Astronomy The University of Toledo Toledo, Ohio High Efficiency Thin Film CdTe and a-Si Based Solar Cells/SR-520-27666 High Efficiency Thin Film CdTe and a-Si Based Solar Cells Annual Technical Report March 4 efficiency CdTe-based thin-film solar cells and on high efficiency a-Si-based thin-film solar cells

Deng, Xunming

142

Response of Cds/CdTe Devices to Te Exposure of Back Contact: Preprint  

SciTech Connect

Theoretical predictions of thin-film CdS/CdTe photovoltaic (PV) devices have suggested performance may be improved by reducing recombination due to Te-vacancy (VTe) or Te-interstitial (Tei) defects. Although formation of these intrinsic defects is likely influenced by CdTe deposition parameters, it also may be coupled to formation of beneficial cadmium vacancy (VCd) defects. If this is true, reducing potential effects of VTe or Tei may be difficult without also reducing the density of VCd. In contrast, post-deposition processes can sometimes afford a greater degree of defect control. Here we explore a post-deposition process that appears to influence the Te-related defects in polycrystalline CdTe. Specifically, we have exposed the CdTe surface to Te prior to ZnTe:Cu/Ti contact-interface formation with the goal of reducing VTe but without significantly reducing VCd. Initial results show that when this modified contact is used on a CdCl2-treated CdS/CdTe device, significantly poorer device performance results. This suggests two things: First, the amount of free-Te available during contact formation (either from chemical etching or CuTe or ZnTe deposition) may be a more important parameter to device performance than previously appreciated. Second, if processes have been used to reduce the effect of VTe (e.g., oxygen and chlorine additions to the CdTe), adding even a small amount of Te may produce detrimental defects.

Gessert, T. A.; Burst, J. M.; Ma, J.; Wei, S. H.; Kuciauskas, D.; Barnes, T. M.; Duenow, J. N.; Young, M. R.; Rance, W. L.; Li, J. V.; Dippo, P.

2012-06-01T23:59:59.000Z

143

Data:Dce066cd-9c07-4949-aa43-5e5007829464 | Open Energy Information  

Open Energy Info (EERE)

Dce066cd-9c07-4949-aa43-5e5007829464 Dce066cd-9c07-4949-aa43-5e5007829464 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Bangor, Wisconsin (Utility Company) Effective date: 2010/05/19 End date if known: Rate name: Rg-1 Residential Service Single Phase with Parallel Generation(20kW or less) Sector: Residential Description: Application: This rate will be applied to residential single-phase customers for ordinary household purposes. Single-phase motors may not exceed 5 horsepower individual-rated capacity without utility permission. Fixed Monthly Charge includes Commitment to Community Rider: $1.10 per customer per month

144

Performance and Loss Analyses of High-Efficiency CBD-ZnS/Cu(In1-xGax)Se2 Thin-Film Solar Cells  

E-Print Network (OSTI)

1 Performance and Loss Analyses of High-Efficiency CBD-ZnS/Cu(In1-xGax)Se2 Thin-Film Solar Cells, Setagaya-ku, Tokyo 157-8572, Japan (Received ) KEYWORDS: ZnS buffer, Cu(In,Ga)Se2, thin-film solar cells alternative to CdS in polycrystalline thin-film Cu(In1-xGax)Se2 (CIGS) solar cells. Cells with efficiency

Sites, James R.

145

ZnO nanoclusters: Synthesis and photoluminescence. | EMSL  

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

ZnO nanoclusters: Synthesis and photoluminescence. ZnO nanoclusters: Synthesis and photoluminescence. Abstract: ZnO nanoclusters were prepared and deposited at room temperature...

146

Thermographic analyses of the growth of Cd1-xZnxTe single crystals  

SciTech Connect

Bulk Cd1-xZnxTe (0Zn content causes non-monotonic dependencies in the quality of the crystals structure.

Kopach, O.V.; Bolotnikov, A.; Shcherbak, Larysa P.; Fochuk, Petro M.; and James, Ralph B.

2010-08-01T23:59:59.000Z

147

Impurity and back contact effects on CdTe/CdS thin film solar cells.  

E-Print Network (OSTI)

??CdTe/CdS thin film solar cells are the most promising cost-effective solar cells. The goal of this project is to improve the performance for CdS/CdTe devices… (more)

Zhao, Hehong

2008-01-01T23:59:59.000Z

148

Luminescence Enhancement of CdTe Nanostructures in LaF3:Ce/CdTe...  

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

Enhancement of CdTe Nanostructures in LaF3:CeCdTe Nanocomposites. Luminescence Enhancement of CdTe Nanostructures in LaF3:CeCdTe Nanocomposites. Abstract: Radiation detection...

149

Data:8cd33a74-f5cd-467b-b625-9a6c26e658b1 | Open Energy Information  

Open Energy Info (EERE)

4-f5cd-467b-b625-9a6c26e658b1 4-f5cd-467b-b625-9a6c26e658b1 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Clintonville, Wisconsin (Utility Company) Effective date: 2006/05/05 End date if known: Rate name: Rg-2 Residential Service Optional Time-of-Day 9am-9pm with Parallel Generation(20kW or less) Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kWh of sales) is greater or lesser than the base cost of power purchased (per kWh of sales). The base cost of power is $0.0680 per kWh. See schedule PCAC.

150

Influence of CdTe thickness on structural and electrical properties of CdTe/CdS solar cells  

E-Print Network (OSTI)

Influence of CdTe thickness on structural and electrical properties of CdTe/CdS solar cells A a b s t r a c ta r t i c l e i n f o Available online xxxx Keywords: Solar cells CdCl2 CdTe Thin absorbers Due to its high scalability and low production cost, CdTe solar cells have shown a very strong

Romeo, Alessandro

151

COMMUNICATIONS Cd doping at the CuInSe2 CdS heterojunction  

E-Print Network (OSTI)

COMMUNICATIONS Cd doping at the CuInSe2 �CdS heterojunction Dongxiang Liaoa) and Angus Rockett that CIGS could be doped with Cd during chemical bath deposition CBD of CdS.6 However, Cd doping of CIGS October 2002; accepted 7 March 2003 The chemical composition of the CuInSe2 /CdS heterojunction interface

Rockett, Angus

152

Rook's Textbook of Dermatology: CD-ROM  

E-Print Network (OSTI)

of Blaschko. In summary, this CD-ROM is simply an electronicform is now available on CD-ROM. If you don't already ownedition of this text, the CD-ROM version priced at only $295

Haycox, Claire L. MD PhD

1997-01-01T23:59:59.000Z

153

Cathodoluminescence of Cd4SiS6?, Cd4SiSe6?, and Si-Doped CdS, CdSe, and CdTe Crystals  

Science Journals Connector (OSTI)

CdS, CdSe, and CdTe single crystals were vapor-phase-doped with the corresponding silicon chalcogenides under nearly...4SiS6and Cd4SiSe6crystals were measured. Metastable, sphalerite CdS?Si? and CdSe?Si? films we...

I. N. Odin; M. V. Chukichev; V. A. Ivanov; M. E. Rubina

2001-05-01T23:59:59.000Z

154

Data:F86ebf17-260f-488e-842f-1883b11fa1cd | Open Energy Information  

Open Energy Info (EERE)

ebf17-260f-488e-842f-1883b11fa1cd ebf17-260f-488e-842f-1883b11fa1cd No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Village of New Glarus, Wisconsin (Utility Company) Effective date: 2010/03/01 End date if known: Rate name: Rg-1 Residential Service Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0721 per kilowatt-hour.

155

Data:5c5fab7d-4cd2-4db7-95da-8c165266d982 | Open Energy Information  

Open Energy Info (EERE)

fab7d-4cd2-4db7-95da-8c165266d982 fab7d-4cd2-4db7-95da-8c165266d982 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Argyle, Wisconsin (Utility Company) Effective date: 2008/05/29 End date if known: Rate name: Rg-1 Residential Service Three Phase Sector: Residential Description: Application: This rate will be applied to residential single-phase customers for ordinary household purposes. Single-phase motors may not exceed 5 horsepower individual-rated capacity without utility permission. Customers who do not meet these criteria will be served under the applicable rate. Fixed Monthly Charge includes Commitment to Community Rider: $1.34 per customer per month

156

CD54AC04, CD74AC04 HEX INVERTERS  

E-Print Network (OSTI)

°C to 125°C SOIC M Tube CD74AC04M AC04M­55°C to 125°C SOIC ­ M Tape and reel CD74AC04M96 AC04M CDIP-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance

Kretchmar, R. Matthew

157

Chlorine-doped CdS thin films from CdCl2-mixed CdS powder  

Science Journals Connector (OSTI)

The CdS:Cl thin films have been prepared using thermally evaporated, CdCl2-mixed CdS powder at 200°C substrate temperature. The percentage of CdCl2 in the mixture varied from 0% to 0.20%. The electrical propertie...

Husam H. Abu-Safe; Marouf Hossain; Hameed Naseem…

2004-01-01T23:59:59.000Z

158

Recent CD-ROM Software  

Science Journals Connector (OSTI)

A modern inheritor of the classic AO Manual of Osteosynthesis..., this work reconciles an exhaustive approach to traumatology with modern learning methods made up by the video media on CD-ROM.

Pierre Kehr

2003-06-01T23:59:59.000Z

159

Predicted roles of defects on band offsets and energetics at CIGS (Cu(In,Ga)Se2/CdS) solar cell interfaces and implications for improving performance  

E-Print Network (OSTI)

, and in- deed the global operating capacity for solar photovoltaics is increasing steadily.1 CurrentlyPredicted roles of defects on band offsets and energetics at CIGS (Cu(In,Ga)Se2/CdS) solar cell ZnO sputtering on the performance of Cu(In,Ga)Se2 thin film solar cells Appl. Phys. Lett. 105, 083906

Goddard III, William A.

160

CdS/CdTe Solar Cells Containing Directly-Deposited CdSxTe1-x Alloy Layers  

SciTech Connect

A CdS{sub x}Te{sub 1-x} layer forms by interdiffusion of CdS and CdTe during the fabrication of thin-film CdTe photovoltaic (PV) devices. The CdS{sub x}Te{sub 1-x} layer is thought to be important because it relieves strain at the CdS/CdTe interface that would otherwise exist due to the 10% lattice mismatch between these two materials. Our previous work [1] has indicated that the electrical junction is located in this interdiffused CdS{sub x}Te{sub 1-x} region. Further understanding, however, is essential to predict the role of this CdS{sub x}Te{sub 1-x} layer in the operation of CdS/CdTe devices. In this study, CdS{sub x}Te{sub 1-x} alloy films were deposited by radio-frequency (RF) magnetron sputtering and co-evaporation from CdTe and CdS sources. Both RF-magnetron-sputtered and co-evaporated CdS{sub x}Te{sub 1-x} films of lower S content (x<;0.3) have a cubic zincblende (ZB) structure akin to CdTe, whereas those of higher S content have a hexagonal wurtzite (WZ) structure like that of CdS. Films become less preferentially oriented as a result of a CdCl{sub 2} heat treatment (HT) at {approx}400 C for 5 min. Films sputtered in a 1% O{sub 2}/Ar ambient are amorphous as deposited, but show CdTe ZB, CdS WZ, and CdTe oxide phases after a CdCl{sub 2} HT. Films sputtered in O{sub 2} partial pressure have a much wider bandgap than expected. This may be explained by nanocrystalline size effects seen previously [2] for sputtered oxygenated CdS (CdS:O) films. Initial PV device results show that the introduction of a directly-deposited CdS{sub x}Te{sub 1-x} alloy layer into the device structure produces devices of comparable performance to those without the alloy layer when a CdCl{sub 2} HT is performed. Further investigation is required to determine whether the CdCl{sub 2} heat treatment step can be altered or eliminated through direct deposition of the alloy layer.

Duenow, J. N.; Dhere, R. G.; Moutinho, H. R.; To, B.; Pankow, J. W.; Kuciauskas, D.; Gessert, T. A.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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

NREL study may provide future guidance in improving CdS/CdTe photovoltaic device performance.  

E-Print Network (OSTI)

NREL study may provide future guidance in improving CdS/CdTe photovoltaic device performance. The majority of minority carrier lifetime (MCL) studies performed on CdS/CdTe photovoltaic (PV) devices have Carrier Lifetime Measurements in Superstrate and Substrate CdTe PV Devices." Proc. 37th IEEE Photovoltaic

162

Performance study of CdS/Co-Doped-CdSe quantum dot sensitized solar cells  

Science Journals Connector (OSTI)

In order to optimize the charge transfer path in quantum dot sensitized solar cells (QDSCs), we employed successive ionic layer adsorption and reaction method to dope CdSe with Co for fabricating CdS/Co-doped-CdSe QDSCs constructed with CdS/Co-doped-CdSe ...

Xiaoping Zou, Sheng He, Gongqing Teng, Chuan Zhao

2014-01-01T23:59:59.000Z

163

Ultraviolet emission from a multi-layer graphene/MgZnO/ZnO light-emitting diode  

SciTech Connect

We report on ultraviolet emission from a multi-layer graphene (MLG)/MgZnO/ZnO light-emitting diodes (LED). The p-type MLG and MgZnO in the MLG/MgZnO/ZnO LED are used as transparent hole injection and electron blocking layers, respectively. The current-voltage characteristics of the MLG/MgZnO/ZnO LED show that current transport is dominated by tunneling processes in the MgZnO barrier layer under forward bias conditions. The holes injected from p-type MLG recombine efficiently with the electrons accumulated in ZnO, and the MLG/MgZnO/ZnO LED shows strong ultraviolet emission from the band edge of ZnO and weak red-orange emission from the deep levels of ZnO.

Kang, Jang-Won; Choi, Yong-Seok; Goo Kang, Chang; Hun Lee, Byoung [School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of); Kim, Byeong-Hyeok [Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of); Tu, C. W. [Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093-0407 (United States); Park, Seong-Ju, E-mail: sjpark@gist.ac.kr [School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of); Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of)

2014-02-03T23:59:59.000Z

164

Zn?Zn Porphyrin Dimer-Sensitized Solar Cells: Toward 3-D Light Harvesting  

Science Journals Connector (OSTI)

Zn?Zn porphyrin dimers have been incorporated into thin dye-sensitized solar cells (DSSCs) to boost their light harvesting efficiency. The photoexcited dimers show efficient and fast electron injection into TiO2 indicating that both photoexcited ...

Attila J. Mozer; Matthew J. Griffith; George Tsekouras; Pawel Wagner; Gordon G. Wallace; Shogo Mori; Kenji Sunahara; Masanori Miyashita; John C. Earles; Keith C. Gordon; Luchao Du; Ryuzi Katoh; Akihiro Furube; David L. Officer

2009-10-09T23:59:59.000Z

165

Isoscalar multipole strength in Cd-110 and Cd-116  

E-Print Network (OSTI)

Isoscalar multipole strength in 110Cd and 116Cd Y.-W. Lui, D. H. Youngblood, Y. Tokimoto, H. L. Clark, and B. John* Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA (Received 6 October 2003; published 24 March 2004... chosen for the analysis. The dashed line below 10 MeV represents a contaminent peak present at some angles in the spectra taken with the spectrometer at 0?. This was subtracted before the multipole analysis was done. PHYSICAL REVIEW C 69, 034611 (2004...

Lui, YW; Youngblood, David H.; Tokimoto, Y.; Clark, HL; John, B.

2004-01-01T23:59:59.000Z

166

1. INTRODUCTION CdTe/CdS solar cells are among the most promising  

E-Print Network (OSTI)

Te/CdS SOLAR CELLS A.Romeo, A.N. Tiwari, and H. Zogg Thin Films Physics Group, Institute of Quantum ElectronicsTe/CdS thin film solar cells. The merits of different TCOs and the properties of the CdTe/CdS solar cells1. INTRODUCTION CdTe/CdS solar cells are among the most promising devices for low cost and high

Romeo, Alessandro

167

A CD19/Fc fusion protein for detection of anti-CD19 chimeric antigen receptors  

E-Print Network (OSTI)

buffer (Invitrogen, Carlsbad, CA. ). Protease inhibitorKit (Invitrogen, Carlsbad, CA. ) according to theactivator CD3/CD28 (Invitrogen, Carlsbad, CA) in RPMI medium

De Oliveira, Satiro N; Wang, Jiexin; Ryan, Christine; Morrison, Sherie L; Kohn, Donald B; Hollis, Roger P

2013-01-01T23:59:59.000Z

168

A CD19/Fc fusion protein for detection of anti-CD19 chimeric antigen receptors.  

E-Print Network (OSTI)

buffer (Invitrogen, Carlsbad, CA. ). Protease inhibitorKit (Invitrogen, Carlsbad, CA. ) according to theactivator CD3/CD28 (Invitrogen, Carlsbad, CA) in RPMI medium

De Oliveira, Satiro N; Wang, Jiexin; Ryan, Christine; Morrison, Sherie L; Kohn, Donald B; Hollis, Roger P

2013-01-01T23:59:59.000Z

169

The Universal RG Machine  

E-Print Network (OSTI)

Functional Renormalization Group Equations constitute a powerful tool to encode the perturbative and non-perturbative properties of a physical system. We present an algorithm to systematically compute the expansion of such flow equations in a given background quantity specified by the approximation scheme. The method is based on off-diagonal heat-kernel techniques and can be implemented on a computer algebra system, opening access to complex computations in, e.g., Gravity or Yang-Mills theory. In a first illustrative example, we re-derive the gravitational $\\beta$-functions of the Einstein-Hilbert truncation, demonstrating their background-independence. As an additional result, the heat-kernel coefficients for transverse vectors and transverse-traceless symmetric matrices are computed to second order in the curvature.

Dario Benedetti; Kai Groh; Pedro F. Machado; Frank Saueressig

2010-12-14T23:59:59.000Z

170

Upconversion Luminescence of CdTe Nanoparticles. | EMSL  

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

of CdTe Nanoparticles. Upconversion Luminescence of CdTe Nanoparticles. Abstract: Efficient upconversion luninescence is observed from CdTe nanoparticles in solution and...

171

Photocurrent Mapping of 3D CdSe/CdTe Windowless Solar Cells  

Science Journals Connector (OSTI)

Photocurrent Mapping of 3D CdSe/CdTe Windowless Solar Cells ... back contact; CdSe; CdTe; photovoltaic; 3D solar cells; SPCM ... Scanning photocurrent microscopy (SPCM) has been used to evaluate the local performance of solar cells by scanning a finely focused optical beam across the surface while monitoring device response. ...

Carlos M. Hangarter; Ratan Debnath; Jong Y. Ha; Mehmet A. Sahiner; Christopher J. Reehil; William A. Manners; Daniel Josell

2013-08-22T23:59:59.000Z

172

Sea Level CD-ROMs Introduction  

E-Print Network (OSTI)

Sea Level CD-ROMs Introduction The Tropical Ocean Global Atmosphere (TOGA) Sea Level Center Service for Mean Sea Level. This CD-ROM contains the holdings of the WDC as of July 1994, which consists with the greatest concentration between 5 and 30 years, although a few sites have over 70 years. CD-ROM Contents

173

Characterization of the Specific CD4+ T Cell Response  

E-Print Network (OSTI)

, involving both CD8+ cytotoxic T lymphocytes (CTLs) and CD4+ T-helper lymphocytes (HTLs), play an essential

Paris-Sud XI, Université de

174

High Efficiency CdTe/CdS Thin Film Solar Cells Prepared by Treating CdTe Films with a Freon Gas in Substitution of CdCl2  

E-Print Network (OSTI)

High Efficiency CdTe/CdS Thin Film Solar Cells Prepared by Treating CdTe Films with a Freon Gas delle Scienze, 37/A-43010 Fontanini, Parma, Italy ABSTRACT: CdTe/CdS thin film solar cells have reached in the preparation of high efficiency CdTe/CdS solar cells is the activation treatment of CdTe film. Most research

Romeo, Alessandro

175

Low-threshold up-conversion luminescence in ZnxCd1?xS with oxidized surface  

Science Journals Connector (OSTI)

The process of low-threshold up-conversion luminescence in ZnxCd1?xS crystals of solid solutions (where x=0.5–0.9) with oxidized surface has been studied. It has been proved that the centers of excitation of up-conversion luminescence form from (CdO)n and (ZnO)n clusters adsorbed on the surface of ZnxCd1?xS crystals. It has been experimentally proved that up-conversion luminescence is connected with the formation of quantum wells. The excitation of such luminescence appears under the influence of quanta 1.7–2.0 eV with the density 0.005 W/cm2, as a result of cold Auger process.

Mikhail S. Smirnov; Oleg V. Ovchinnikov; Ekaterina A. Kosyakova; Anatoly N. Latyshev; Alexander F. Klinskikh; Elena P. Tat’yanina; Pavel V. Novikov; Mien Hai

2009-01-01T23:59:59.000Z

176

HIGH EFFICIENCY CdTe/CdS THIN FILM SOLAR CELLS WITH A NOVEL BACK-CONTACT Nicola Romeoa  

E-Print Network (OSTI)

HIGH EFFICIENCY CdTe/CdS THIN FILM SOLAR CELLS WITH A NOVEL BACK-CONTACT Nicola Romeoa , Alessio in the fabrication of high efficiency CdTe/CdS thin film solar cells. Usually, it is done first by etching the Cd: Back Contact, CdTe, Thin Film 1 INTRODUCTION The back contact in the CdTe/CdS thin film solar cell

Romeo, Alessandro

177

Doping of CdS nanoparticles  

Science Journals Connector (OSTI)

The doping of semiconductor nanoparticles is introduced and examined via doping of cadmium sulfide nanoparticles both by chemical bath deposition route with In3+ cations and by thermal annealing route with Cl? anions. The CdS nanoparticles (10–20 nm in size) were prepared by mixing CdCl2 and Na2S solutions stabilized with pyridine both in absence and in presence of InCl3 additives. The doping of the nanostructured CdS films prepared from CdS nanoparticles dispersions was performed by additives of aqueous CdCl2 solution followed by the film annealing. Due to the used doping procedure the increase of the film conductivity began at temperature ?300 °C, which was far lower than temperature inducing the doping of polycrystalline CdS films and not yet enough for the noticeable recrystallization of CdS nanoparticles into larger domains. The In2S3 and CdCl2 doping of CdS nanoparticles resulted in changes in electronic absorption and luminescence spectra of the nanoparticle dispersions and films. The phenomenon of the easier doping of CdS nanoparticles is discussed in terms of the high surface energy of CdS nanoparticles.

N.M. Osipyonok; A.F. Singaevsky; Yu.V. Noskov; Yu.P. Piryatinski; P.S. Smertenko; O.P. Dimitriev; A.A. Pud

2008-01-01T23:59:59.000Z

178

Semitransparent ultrathin CdTe solar cells Semitransparent ultrathin CdTe solar cells and durabilityand durability  

E-Print Network (OSTI)

Semitransparent ultrathin CdTe solar cells Semitransparent ultrathin CdTe solar cells core technology is built around · sputter deposition · CdS/CdTe cell structure · Extensive IPTe cellsultrathin CdTe cells X26 stateoftheart compared with other CdTe deposition: [X26 technology has been

Rollins, Andrew M.

179

Electrochemically Controlled Surface Plasmon Enhanced Fluorescence Response of Surface Immobilized CdZnSe Quantum Dots  

Science Journals Connector (OSTI)

The application of negative potentials (versus Ag/AgCl) led to a decrease in the surface plasmon enhanced fluorescence signal, the fluorescence signal recovered if the cell potential was returned to 0 V or open circuit. ... UV?vis spectroscopy was carried out on a Perkin-Elmer Lambda 9 UV/vis/NIR spectrophotometer and fluorescence spectroscopy on a J&M TIDAS fluorescence spectrometer with illumination from a 100 W xenon bulb. ... In the research described in this paper, we show that such electrode potential control of QD fluorescence can also be achieved in an aqueous environment by close control of coupling conditions and QD chemistry leading to the possibility of using such structures for enhanced detection of biological and biorelated molecules. ...

Petra J. Cameron; Xinhua Zhong; Wolfgang Knoll

2009-03-23T23:59:59.000Z

180

Final Report: A CdZnTe detector for MRI-compatible SPECT Systems  

SciTech Connect

The key objective of this project is to develop the enabling technology for future MRI-compatible nuclear (e.g. SPECT) imaging system, and to demonstrate the feasibility of performing simultaneous MR and SPECT imaging studies of the same object. During the past three years, we have developed (a) a MRI-compatible ultrahigh resolution gamma ray detector and associated readout electronics, (b) a theoretical approach for modeling the effect of strong magnetic field on SPECT image quality, and (c) a maximum-likelihood (ML) based reconstruction routine with correction for the MR-induced distortion. With this support, we have also constructed a four-head MR-compatible SPECT system and tested the system inside a 3-T clinical MR-scanner located on UI campus. The experimental results obtained with this system have clearly demonstrated that sub-500um spatial resolution can be achieved with a SPECT system operated inside a 3-T MRI scanner. During the past three years, we have accomplished most of the major objectives outlined in the original proposal. These research efforts have laid out a solid foundation the development of future MR-compatible SPECT systems for both pre-clinical and clinical imaging applications.

Meng, Ling-Jian

2012-12-27T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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
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181

Sensitivity studies of CdZnTe semiconductor detectors for the COBRA experiment.  

E-Print Network (OSTI)

??The COBRA Experiment searches for Neutrinoless Double Beta Decay. The observation of this decay would provide the absolute mass of the neutrino and clarify the… (more)

Köttig, Tobias

2012-01-01T23:59:59.000Z

182

Crystal structure of the hexagonal (Zn, Mg)4Ho and (Zn, Mg)4Er  

Science Journals Connector (OSTI)

The crystal structure of the hexagonal (Zn, Mg)4Ho/Er was determined by single crystal X-ray diffraction analysis. For the Zn68.4Mg12.7Ho18.9, the structural model, refined to a final R-value of 0.0672, has the composition of Zn69.34Mg12.01Ho18.65, a = 14.259 Å and c = 14.007 Å, and the space group P63/mmc (No. 194). Among the 10 Zn, 2 Mg, and 4 Ho independent sites, 3 Zn sites are icosahedral coordinated whereas 1 Mg is located at the center of a CN15 Kasper deltahedron enclosed by 26 triangles and 15 vertices. In the ?1 0 0? directions, there are four interpenetrated icosahedra, I4(P), within an a period, constituting an icosahedral (0 0 1) layer block in half of the unit-cell. In the [0 0 1] direction, in addition to the two face-sharing icosahedra, I2(F), there is still a CN15 Kasper deltahedron. For the Zn70.8Mg10.6Er18.6, the final refinement led to a R-value of 0.0708. The atom coordinates are very close to those of above (Zn, Mg)4Ho, the largest difference between two corresponding coordinates being only 0.00086. Thus (Zn, Mg)4Er is iso-structural with (Zn, Mg)4Ho. This hexagonal (Zn, Mg)4RE phase has also been found in RE = Y, Sm, Gd, Dy, and Yb cases and they are probably also iso-structural with (Zn, Mg)4Ho/Er. This structure is icosahedrally closely related to the other two known, hexagonal, Zn-rich (Zn, Mg)nRE structures, namely, the Zn6Mg3Y/Sm/Gd [H. Takakura, A. Sato, A. Yamamoto, A.P. Tsai, Phil. Mag. Lett. 78 (1998) 263; K. Sugiyama, K. Yasuda, T. Ohsuna, K. Hiraga, Z. Kristallogr. 213 (1998) 537] and the Zn3MgY [D.W. Deng, K.H. Kuo, Z.P. Luo, D.J. Miller, M.J. Kramer, D.W. Dennis, J. Alloys Compd. 373 (2004) 156]. All these three hexagonal phases coexist with the icosahedral quasicrystal in the Zn–Mg–RE alloys.

M.R. Li; D.W. Deng; K.H. Kuo

2006-01-01T23:59:59.000Z

183

ZnTe: Gibbs free energy  

Science Journals Connector (OSTI)

This document is part of Volume 44 ‘Semiconductors’, Subvolume B ‘New Data and Updates for II-VI Compounds’ of Landolt-Börnstein Group III ‘Condensed Matter’. It contains data on ZnTe (zinc telluride), Element...

J. Gutowski; K. Sebald; T. Voss

2009-01-01T23:59:59.000Z

184

CD  

Gasoline and Diesel Fuel Update (EIA)

at electric power plants; enclosed structures that are not buildings, such as oil tanks, statues, and monuments; and dilapidated or incompleted buildings missing a roof or a...

185

CD  

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

on historical data during a period that did not include the typical processing of high-heat backlog waste. This did not allow normal evaporator operation in F-Tank Farm because...

186

Recycling of CdTe photovoltaic waste  

DOE Patents (OSTI)

A method for extracting and reclaiming metals from scrap CdTe photovoltaic cells and manufacturing waste by leaching the waste with a leaching solution comprising nitric acid and water, skimming any plastic material from the top of the leaching solution, separating the glass substrate from the liquid leachate and electrolyzing the leachate to separate Cd from Te, wherein the Te is deposits onto a cathode while the Cd remains in solution.

Goozner, Robert E. (Charlotte, NC); Long, Mark O. (Charlotte, NC); Drinkard, Jr., William F. (Charlotte, NC)

1999-01-01T23:59:59.000Z

187

indirect LFV Stephan Lammel, Fermilab CD  

E-Print Network (OSTI)

, Fermilab CD Lepton-Photon 2005 Uppsala, June 30th Search for Higgs and New Phenomena at Colliders / #12;Lepton-Photon 2005 Stephan Lammel, Fermilab CD 2005-Jun-30, page 2/28 · Large variety of excellent-Photon 2005 Stephan Lammel, Fermilab CD 2005-Jun-30, page 3/28 Precision EWK/Top and Higgs CDF/D0 mtop went

Fermilab

188

"El Torito" Bootable CD-ROM Format  

E-Print Network (OSTI)

"El Torito" Bootable CD-ROM Format Specification Version 1.0 January 25, 1995 Curtis E. Stevens WITHOUT CHARGE FOR USE IN DEVELOPING COMPUTER SYSTEMS AND CD-ROM DRIVES. THE DEVELOPERS OF THIS DOCUMENT.0 THE INT 13 ACCESSIBLE IMAGE 14 4.0 INT 13 AND CD-ROMS 14 4.1 INT 13 Function 08 14 4.2 INT 13 Function 48

Gummadi, Ramakrishna

189

Crystal structure and magnetic properties and Zn substitution effects on the spin-chain compound Sr{sub 3}Co{sub 2}O{sub 6}  

SciTech Connect

The effects of substituting Co on the spin-chain compound Sr{sub 3}Co{sub 2}O{sub 6} with Zn were investigated by synchrotron X-ray diffraction, magnetic susceptibility, isothermal magnetization, and specific heat measurements. To the best of our knowledge, this is the first report to describe the successful substitution of Co in Sr{sub 3}Co{sub 2}O{sub 6} with Zn. The substitution was carried out by a method involving high pressures and temperatures to obtain Sr{sub 3}CoZnO{sub 6}, which crystalized into a K{sub 4}CdCl{sub 6}-derived rhombohedral structure with a space group of R-3c, similar to the host compound. With the Zn substitution, the Ising-type magnetic anisotropy of the host compound remarkably reduced; the newly formed Sr{sub 3}CoZnO{sub 6} became magnetically isotropic with Heisenberg-type characteristics. This could probably be ascribed to the establishment of a different interaction pathway, –Co{sup 4+}(S=1/2)–O–Zn{sup 2+}(S=0)–O–Co{sup 4+}(S=1/2)–. Details of the magnetic properties of Zn substituted Sr{sub 3}Co{sub 2}O{sub 6} were reported. - Graphical abstract: Crystal structure of the spin-chain compound Sr{sub 3}CoZnO{sub 6} synthesized at 6 GPa. Zn atoms preferably occupy the trigonal prism sites rather than the octahedral sites. As a result, the compound is much magnetically isotropic. Highlights: • Effects of substituting Co with Zn on spin-chain magnetism of Sr{sub 3}Co{sub 2}O{sub 6} were studied. • High-pressure synthesis resulted in a solid solution of Sr{sub 3}CoZnO{sub 6}. • Sr{sub 3}CoZnO{sub 6} showed more isotropic magnetism than the host Sr{sub 3}Co{sub 2}O{sub 6}.

Wang, Xia [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba Ibaraki 305-0044 (Japan); Department of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Guo, Yanfeng, E-mail: Yangfeng.Guo@physics.ox.ac.uk [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba Ibaraki 305-0044 (Japan); Sun, Ying [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba Ibaraki 305-0044 (Japan); Tsujimoto, Yoshihiro [Materials Processing Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 (Japan); Matsushita, Yoshitaka [Materials Analysis Station, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 (Japan); Yamaura, Kazunari, E-mail: yamaura.kazunari@nims.go.jp [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba Ibaraki 305-0044 (Japan); Department of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan)

2013-08-15T23:59:59.000Z

190

A Study of CdS and Ag doped CdS Prepared through CBD Technique  

Science Journals Connector (OSTI)

A novel and simple CBD Technique has been utilized to synthesize CdS and Ag doped CdS nanoparticles and thin film with an average particle size of 7nm, characterized by X-RD,...

Chandel, Shubham

191

p-CdTe/n-CdS photovoltaic cells in the substrate configuration.  

E-Print Network (OSTI)

??In this thesis, p-CdTe/n-CdS solar cells in the substrate configuration have been studied. The focus is on device fabrication, performance optimization, and the development of… (more)

Wu, Hsiang Ning (1984 - )

2014-01-01T23:59:59.000Z

192

Stability Issues in Sputtered CdS/CdTe Solar Cells.  

E-Print Network (OSTI)

?? Magnetron sputtering is a well-established thin-film deposition technique which is particularly well-suited for sub-micron layers. We use this method to deposit ultra-thin CdS/CdTe layers… (more)

Paudel, Naba Raj

2011-01-01T23:59:59.000Z

193

Aqueous Synthesis of Zinc Blende CdTe/CdS Magic-Core/Thick-Shell...  

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

CdTeCdS Magic-CoreThick-Shell Tetrahedral Shaped Nanocrystals with Emission Tunable to Near-Infrared Authors: Deng, Z., Schulz, O., Lin, S., Ding, B., Liu, X., Wei, X., Ros, R.,...

194

Structures of nanowires with Zn-ZnO:CuO junctions for detecting ethanol vapors  

Science Journals Connector (OSTI)

The synthesis of ZnO-ZnO:CuO structures in the form of overlapping layers of nanowires of pure and copper oxide-doped zinc oxide is described. These structures are tested as ethanol vapor sensors. The following t...

T. V. Peshkova; D. Ts. Dimitrov; S. S. Nalimova; I. E. Kononova…

2014-05-01T23:59:59.000Z

195

1. INTRODUCTION CdTe/CdS is one of the most promising solar cell for low  

E-Print Network (OSTI)

with CdTe grown by close space sublimation, electrodeposition, spray pyrolysis, vacuum evaporation and RF conversion of CdTe layers, as well as for the intermixing of CdS-CdTe. An optimum annealing condition is required for the formation of an appropriate CdTe1-x-Sx intermixed interface. It is desirable to separately

Romeo, Alessandro

196

The UNEP project CD4CDM Sustainable  

E-Print Network (OSTI)

The UNEP project CD4CDM CDM Sustainable Development Impacts #12;1 CDM Sustainable Development Impacts developed for the UNEP project `CD4CDM' The project is funded by the Netherlands Ministry Impacts UNEP Risø Centre on Energy, Climate and Sustainable Development Risø National Laboratory Roskilde

197

Interaction of CO with Surface PdZn Alloys. | EMSL  

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

Pd(111) surface resulting in the formation of an ordered surface PdZn alloy. Carbon monoxide was found to bond more weakly to the ZnPd(111) alloy surfaces compared to clean...

198

Acceptors in ZnO nanocrystals  

SciTech Connect

Zinc oxide (ZnO) has potential for a range of optoelectronic applications. In this work, we studied the defect properties of ZnO nanocrystals, grown by a solid-state pyrolytic reaction method, using IR and electron paramagnetic resonance (EPR) spectroscopy. A series of IR absorption peaks have been observed at liquid-helium temperatures. These transition lines suggest a hydrogenic acceptor with a hole binding energy of ~ 0.4 - 0.5 eV. EPR measurements in the dark showed the well-known donor line at g = 1.96, and a line at g = 2.003, which we attribute to acceptors that involve a zinc vacancy. A line at g = 2.013, only seen after exposure to light, is assigned to nonaxial zinc vacancy-hydrogen complexes. Given the current lack of suitable acceptor dopants in ZnO, vacancy complexes may provide the best route toward p-type conductivity.

Teklemichael, Samuel T.; Oo, W.M.H.; Matthew, McClusky; Walter, Eric D.; Hoyt, David W.

2011-06-09T23:59:59.000Z

199

Magnetism in Dopant-Free ZnO Nanoplates  

Science Journals Connector (OSTI)

Magnetism in Dopant-Free ZnO Nanoplates ... We found that the chemically synthesized ZnO nanoplates exhibit magnetism even at room temperature. ... First-principles calculations show a growing asymmetry in the spin distribution within the distorted bands formed from Zn (3d) and O (2p) orbitals with the reduction of thickness of the ZnO nanoplates, which is suggested to be responsible for the observed magnetism. ...

Jung-Il Hong; Jiil Choi; Seung Soon Jang; Jiyeong Gu; Yangling Chang; Gregory Wortman; Robert L. Snyder; Zhong Lin Wang

2012-01-03T23:59:59.000Z

200

Investigation of Junction Properties of CdS/CdTe Solar Cells and their Correlation to Device Properties (Presentation)  

SciTech Connect

The objective of the Junction Studies are: (1) understand the nature of the junction in the CdTe/CdS device; (2) correlate the device fabrication parameters to the junction formation; and (3) develop a self consistent device model to explain the device properties. Detailed analysis of CdS/CdTe and SnO{sub 2}/CdTe devices prepared using CSS CdTe is discussed.

Dhere, R. G.; Zhang, Y.; Romero, M. J.; Asher, S. E.; Young, M.; To, B.; Noufi, R.; Gessert, T. A.

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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.


201

Effect of the concentration of uncompensated impurities on the properties of CdTe-based X- and {gamma}-ray detectors  

SciTech Connect

Measurements of the {sup 55}Fe-isotope emission spectra and the photosensitivity of CdTe detectors with a Schottky diode, and also the temperature dependence of the resistivity of a CdTe crystal ((2-3) Multiplication-Sign 10{sup 9} {Omega}cm at 300 K) have been used to determine the concentration of uncompensated donors (1-3) Multiplication-Sign 10{sup 12} cm{sup -3}. Similar measurements performed for Cd{sub 0.9}Zn{sub 0.1}Te crystals with the resistivity (3-5) Multiplication-Sign 10{sup 10} {Omega} cm at 300 K have shown that the concentration of uncompensated donors in this case is lower by approximately four orders of magnitude. The results of calculations show that, due to such a significant decrease in the concentration of uncompensated donors, the efficiency of X- and {gamma}-ray radiation detection in the photon energy range 59 to 662 keV can decrease by one-three orders of magnitude (depending on the photon energy and the lifetime of charge carriers in the space-charge region). The results obtained account for the apparent poor detecting properties of the Cd{sub 0.9}Zn{sub 0.1}Te detectors.

Kosyachenko, L. A., E-mail: lacos@chv.ukrpact.net; Sklyarchuk, V. M.; Melnychuk, S. V.; Maslyanchuk, O. L.; Grushko, E. V.; Sklyarchuk, O. V. [Chernivtsi National University (Ukraine)

2012-03-15T23:59:59.000Z

202

Junction Evolution During Fabrication of CdS/CdTe Thin-film PV Solar Cells (Presentation)  

SciTech Connect

Discussion of the formation of CdTe thin-film PV junctions and optimization of CdTe thin-film PV solar cells.

Gessert, T. A.

2010-09-01T23:59:59.000Z

203

Recycling of CdTe photovoltaic waste  

DOE Patents (OSTI)

A method for extracting and reclaiming metals from scrap CdTe photovoltaic cells and manufacturing waste by leaching the metals in dilute nitric acid, leaching the waste with a leaching solution comprising nitric acid and water, skimming any plastic material from the top of the leaching solution, separating the glass substrate from the liquid leachate, adding a calcium containing base to the leachate to precipitate Cd and Te, separating the precipitated Cd and Te from the leachate, and recovering the calcium-containing base.

Goozner, Robert E. (Charlotte, NC); Long, Mark O. (Charlotte, NC); Drinkard, Jr., William F. (Charlotte, NC)

1999-04-27T23:59:59.000Z

204

Development of a Solar-Thermal ZnO/Zn Water-Splitting Thermochemical...  

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

Development of a Solar-thermal ZnOZn Water-splitting Thermochemical Cycle Final Report (DE-PS36-03GO93007 - Subcontract RF-05-SHGR-006) Alan W. Weimer (PI), Christopher Perkins,...

205

CdSe Nanorods Dominate Photocurrent of Hybrid CdSe?P3HT Photovoltaic Cell  

Science Journals Connector (OSTI)

CdSe Nanorods Dominate Photocurrent of Hybrid CdSe?P3HT Photovoltaic Cell ... A portion of the work was performed in the Univeristy Of California, Santa Barbara, Nanofabrication Facility, a part of the National Science Foundation funded National Nanofabrication Infrastructure Network (NNIN). ... The UV-visible light absorption and emission behavior of MEH-PPV/CdS hybrids was investigated and their potential to be used as photovoltaic cells was demonstrated. ...

Martin Schierhorn; Shannon W. Boettcher; Jeffrey H. Peet; Elison Matioli; Guillermo C. Bazan; Galen D. Stucky; Martin Moskovits

2010-09-28T23:59:59.000Z

206

Gamma-ray cascade transitions from resonant neutron capture in Cd-111 and Cd-113  

SciTech Connect

A neutron-capture experiment on {sup nat}Cd has been carried out at DANCE. Multiple-fold coincidence {gamma}-ray spectra have been collected from J=0, 1 resonances in {sup 111}Cd and {sup 113}Cd. The cascades ending at the ground state can be described by the SLO model while the cascades ending at the 2+ states are better reproduced by the mixed SLO+KMF model.

Rusev, Gencho Y. [Los Alamos National Laboratory

2012-08-27T23:59:59.000Z

207

CD54AC08, CD74AC08 QUADRUPLE 2-INPUT POSITIVE-AND GATES  

E-Print Network (OSTI)

SOIC M Tube CD74AC08M AC08M­55°C to 125°C SOIC ­ M Tape and reel CD74AC08M96 AC08M CDIP ­ F Tube CD54AC-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance

Kretchmar, R. Matthew

208

CD54AC02, CD74AC02 QUADRUPLE 2-INPUT POSITIVE-NOR GATES  

E-Print Network (OSTI)

to 125°C SOIC ­ M Tape and reel CD74AC02M96 AC02M CDIP ­ F Tube CD54AC02F3A CD54AC02F3A Package drawings-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance

Kretchmar, R. Matthew

209

CD54AC32, CD74AC32 QUADRUPLE 2-INPUT POSITIVE-OR GATES  

E-Print Network (OSTI)

Tape and reel CD74AC32M96 AC32M CDIP ­ F Tube CD54AC32F3A CD54AC32F3A Package drawings, standard-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance

Kretchmar, R. Matthew

210

CD54ACT00, CD74ACT00 QUADRUPLE 2-INPUT POSITIVE-NAND GATES  

E-Print Network (OSTI)

CD74ACT00E 55°C to 125°C SOIC M Tube CD74ACT00M ACT00M­55°C to 125°C SOIC ­ M Tape and reel CD74ACT00-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance

Kretchmar, R. Matthew

211

Making holograms – an educational CD-ROM  

Science Journals Connector (OSTI)

The Columbia Career Center High School SPIE Chapter has created an educational CD-ROM to teach holography to students on the threshold of a career path in Optics and Photonics....

John, Pearl V; Poché, Elaine; Rowden, Paul

212

Data:7401a547-cd76-4d46-8042-6c1e4e17aa10 | Open Energy Information  

Open Energy Info (EERE)

cd76-4d46-8042-6c1e4e17aa10 cd76-4d46-8042-6c1e4e17aa10 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Princeton, Wisconsin (Utility Company) Effective date: 2006/09/14 End date if known: Rate name: Rg-2 Residential Service Optional Time-of-Day Three Phase 7am-7pm Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0524 per kilowatt-hour.

213

Data:Eadb7c29-8519-4665-b35c-43cd8a27ae3b | Open Energy Information  

Open Energy Info (EERE)

Eadb7c29-8519-4665-b35c-43cd8a27ae3b Eadb7c29-8519-4665-b35c-43cd8a27ae3b No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of New Lisbon, Wisconsin (Utility Company) Effective date: 2008/05/12 End date if known: Rate name: Rg-1 Residential Service Three Phase Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0523 per kilowatt-hour.

214

Data:4ee3cd08-a1ca-4c12-aad0-f84efa3f97d4 | Open Energy Information  

Open Energy Info (EERE)

cd08-a1ca-4c12-aad0-f84efa3f97d4 cd08-a1ca-4c12-aad0-f84efa3f97d4 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Oconto Falls Water & Light Comm Effective date: 2010/10/13 End date if known: Rate name: Rg-2 Residential Service Optional Time-of-Day Single Phase 9am-9pm with Parallel Generation(20kW or less) Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0847 per kilowatt-hour.

215

Data:A7b18ca0-6fd4-48cd-b2c4-b867bd478abf | Open Energy Information  

Open Energy Info (EERE)

ca0-6fd4-48cd-b2c4-b867bd478abf ca0-6fd4-48cd-b2c4-b867bd478abf No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Village of Cashton, Wisconsin (Utility Company) Effective date: 2009/02/15 End date if known: Rate name: Rg-1 Residential Service Three Phase Sector: Residential Description: Application: This rate will be applied to residential single-phase and three-phase customers for ordinary household purposes. Single-phase motors may not exceed 5 horsepower individual-rated capacity without utility permission. Fixed Monthly Charge includes Commitment to Community Rider: $1.33 per customer per month. Power Cost Adjustment Clause: Charge per all kWh varies monthly.

216

Data:8fedf6a3-77ff-4cd4-9e32-a425b40eb8ed | Open Energy Information  

Open Energy Info (EERE)

fedf6a3-77ff-4cd4-9e32-a425b40eb8ed fedf6a3-77ff-4cd4-9e32-a425b40eb8ed No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Eagle River, Wisconsin (Utility Company) Effective date: 2009/08/04 End date if known: Rate name: Rg-2 Residential Service Single Phase - Optional Time-of-Day 7am-7pm with Parallel Generation(20kW or less)-Net Energy Billing Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base

217

Data:6fc96800-2671-4a9d-9aa6-9cb771f9d8cd | Open Energy Information  

Open Energy Info (EERE)

6800-2671-4a9d-9aa6-9cb771f9d8cd 6800-2671-4a9d-9aa6-9cb771f9d8cd No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Cuba City, Wisconsin (Utility Company) Effective date: 2009/10/14 End date if known: Rate name: Rg-1 Residential Service Three Phase Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0765 per kilowatt-hour.

218

Data:2dd43dd6-5384-407a-ad9b-8217a2243cd5 | Open Energy Information  

Open Energy Info (EERE)

3dd6-5384-407a-ad9b-8217a2243cd5 3dd6-5384-407a-ad9b-8217a2243cd5 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Village of Sauk City, Wisconsin (Utility Company) Effective date: 2008/08/18 End date if known: Rate name: Rg-2 Residential Service Optional Time-of-Day Three Phase Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0756 per kilowatt-hour.

219

Data:E0909497-c3f7-4ab4-b60a-27018cf4f5cd | Open Energy Information  

Open Energy Info (EERE)

09497-c3f7-4ab4-b60a-27018cf4f5cd 09497-c3f7-4ab4-b60a-27018cf4f5cd No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Princeton, Wisconsin (Utility Company) Effective date: 2006/09/14 End date if known: Rate name: Rg-2 Residential Service Optional Time-of-Day Single Phase 7am-7pm with Parallel Generation(20kW or less) Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0524 per kilowatt-hour.

220

Data:80a5bf7d-cd68-4bcb-a67f-9d78565135aa | Open Energy Information  

Open Energy Info (EERE)

bf7d-cd68-4bcb-a67f-9d78565135aa bf7d-cd68-4bcb-a67f-9d78565135aa No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Village of Sauk City, Wisconsin (Utility Company) Effective date: 2008/08/18 End date if known: Rate name: Rg-2 Residential Service Optional Time-of-Day Single Phase Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0756 per kilowatt-hour.

Note: This page contains sample records for the topic "rg zn cd" 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
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221

Data:A5b300cd-4537-40ba-949f-9cff3a613b55 | Open Energy Information  

Open Energy Info (EERE)

0cd-4537-40ba-949f-9cff3a613b55 0cd-4537-40ba-949f-9cff3a613b55 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Hustisford Utilities Effective date: 2008/09/30 End date if known: Rate name: Rg-2 Residential Service Optional Time-of-Day Three Phase 9am-9pm with Parallel Generation(20kW or less) Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0720 per kilowatt-hour.

222

Data:5c246a28-db7e-42a7-b80a-71b8065cd85f | Open Energy Information  

Open Energy Info (EERE)

a28-db7e-42a7-b80a-71b8065cd85f a28-db7e-42a7-b80a-71b8065cd85f No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Princeton, Wisconsin (Utility Company) Effective date: 2006/09/14 End date if known: Rate name: Rg-2 Residential Service Optional Time-of-Day Three Phase 9am-9pm Sector: Residential Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0524 per kilowatt-hour.

223

Ferromagnetism in CuO-ZnO multilayers  

SciTech Connect

We investigated the magnetic properties of CuO-ZnO heterostructures to elucidate the origin of the ferromagnetic signature in Cu doped ZnO. The CuO and ZnO layer thickness were varied from 15 to 150 nm and from 70 to 350 nm, respectively. Rutherford backscattering experiments showed no significant diffusion of either Cu in ZnO or Zn in CuO layers. Magnetic measurements indicate ferromagnetism at 300 K, which depends on the CuO particle size, but not on the CuO-ZnO interfacial area. Polarized neutron reflectometry measurements show that the observed magnetization cannot be accounted for solely by spins localized near the CuO-ZnO interface or in the CuO layer.

Sudakar, C.; Padmanabhan, K.; Naik, R.; Lawes, G. [Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201 (United States); Kirby, B. J. [NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Kumar, Sanjiv [NCCCM, Bhabha Atomic Research Centre, ECIL Post, Hyderabad 500062 (India); Naik, V. M. [Department of Natural Sciences, University of Michigan-Dearborn, Dearborn, Michigan 48128 (United States)

2008-07-28T23:59:59.000Z

224

Fabrication of ultra thin CdS/CdTe solar cells by magnetron sputtering.  

E-Print Network (OSTI)

?? CdTe is a nearly perfect absorber material for second generation polycrystalline solar cells because the bandgap closely matches the peak of the solar spectrum,… (more)

Plotnikov, Victor

2009-01-01T23:59:59.000Z

225

Synthesis and spectroscopic characterisation of aurichalcite (Zn,Cu2+)5(CO3)2(OH)6; implications for Cu–ZnO catalyst precursors  

Science Journals Connector (OSTI)

The Cu–ZnO catalyst precursors with variable Cu:Zn ratio, between Zn-rich and Cu-rich compositions have been investigated by a combination of electronic and vibrational spectroscopy. Synthesized catalyst precu...

B. Jagannadha Reddy; Ray Leslie Frost; Ashley Locke

2008-04-01T23:59:59.000Z

226

Mutation Research 594 (2006) 113119 Quantification of CD59-  

E-Print Network (OSTI)

, which expresses several cell surface proteins including CD59 encoded by the CD59 gene at 11p13 either radiation or chemical treatment. After incubation with phycoerythrin-conjugated mouse monoclonal 11, which expresses several cell surface proteins including CD59 encoded by the CD59 gene at 11p13

227

Defect induced ferromagnetism in undoped ZnO nanoparticles  

SciTech Connect

Undoped ZnO nanoparticles (NPs) with size ?12?nm were produced using forced hydrolysis methods using diethylene glycol (DEG) [called ZnO-I] or denatured ethanol [called ZnO-II] as the reaction solvent; both using Zn acetate dehydrate as precursor. Both samples showed weak ferromagnetic behavior at 300?K with saturation magnetization M{sub s}?=?0.077 ± 0.002 memu/g and 0.088 ± 0.013 memu/g for ZnO-I and ZnO-II samples, respectively. Fourier transform infrared (FTIR) spectra showed that ZnO-I nanocrystals had DEG fragments linked to their surface. Photoluminescence (PL) data showed a broad emission near 500?nm for ZnO-II which is absent in the ZnO-I samples, presumably due to the blocking of surface traps by the capping molecules. Intentional oxygen vacancies created in the ZnO-I NPs by annealing at 450?°C in flowing Ar gas gradually increased M{sub s} up to 90?min and x-ray photoelectron spectra (XPS) suggested that oxygen vacancies may have a key role in the observed changes in M{sub s}. Finally, PL spectra of ZnO showed the appearance of a blue/violet emission, attributed to Zn interstitials, whose intensity changes with annealing time, similar to the trend seen for M{sub s}. The observed variation in the magnetization of ZnO NP with increasing Ar annealing time seems to depend on the changes in the number of Zn interstitials and oxygen vacancies.

Rainey, K.; Chess, J.; Eixenberger, J.; Tenne, D. A.; Hanna, C. B.; Punnoose, A., E-mail: apunnoos@boisestate.edu [Department of Physics, Boise State University, Boise, Idaho 83725 (United States)

2014-05-07T23:59:59.000Z

228

COMPARISON OF CSS-CdTe AND PVD-CdTe WITH DIFFERENT ACTIVATION PROCESSES , G. Khrypunov2,4  

E-Print Network (OSTI)

University, Leicestershire, LE11 3TU, UK ABSTRACT: CdTe polycrystalline thin film solar cells have a strong AM1.5 illumination. Amongst several attractive features high chemical stability of CdTe and a simple simplification has been done by substituting the CdCl2 step by treating CdTe films in an atmosphere containing

Romeo, Alessandro

229

STRUCTURAL AND CHEMICAL STUDIES ON CdTe/CdS THIN FILM SOLAR CELLS WITH ANALYTICAL TRANSMISSION ELECTRON MICROSCOPY  

E-Print Network (OSTI)

STRUCTURAL AND CHEMICAL STUDIES ON CdTe/CdS THIN FILM SOLAR CELLS WITH ANALYTICAL TRANSMISSION, A. N. Tiwari Thin Film Physics Group, Laboratory for Solid State Physics, Technopark ETH-Building, Technoparkstr. 1, CH-8005 Zurich, Switzerland ABSTRACT: CdTe/CdS thin £lm solar cells have been grown by closed

Romeo, Alessandro

230

CD-ROM Design Notes By Kenneth I. Takahashi  

E-Print Network (OSTI)

Chapter CD CD-ROM Design Notes By Kenneth I. Takahashi in U.S. Geological Survey Digital Data Go to Table of Contents #12;CD-1 INTRODUCTION This set of four CD-ROM's documents the U.S. Geological that have the potential to be added to reserves in the 30 years from 1995 to 2025. This report spans four CD-ROM

Laughlin, Robert B.

231

Investigation of CdS Nanowires and Planar Films for Enhanced Performance as Window Layers in CdS-CdTe Solar Cell Devices.  

E-Print Network (OSTI)

??Cadmium sulfide (CdS) and cadmium telluride (CdTe) are two leading semiconductor materials used in the fabrication of thin film solar cells of relatively high power… (more)

Chen, Jianhao

2013-01-01T23:59:59.000Z

232

Femtosecond and coherent effects in bulk CdSe and CdSexS1-x doped glasses  

E-Print Network (OSTI)

researchers have produced crystallites of CdS, CdSe and CuCI, as small at 12 A in diameter, with relatively1711 Femtosecond and coherent effects in bulk CdSe and CdSexS1-x doped glasses N. Peyghambarian-1715 DÃ?CEMBRE 1987, PAGE 1711 Classification Physics Abstracts 42.65 - 42.70G Glasses doped with Cd

Boyer, Edmond

233

Recrystallization in CdTe/CdS A. Romeo, D.L. Batzner, H. Zogg, A.N. Tiwari*  

E-Print Network (OSTI)

Recrystallization in CdTe/CdS A. Romeo, D.L. BaÃ?tzner, H. Zogg, A.N. Tiwari* Thin Film Physics with HVE and CBD grown CdS window layers. q 2000 Elsevier Science S.A. All rights reserved. Keywords: Cd and to different deposition techniques of the window layer. Chemi- cal bath deposition (CBD) grown CdS is preferred

Romeo, Alessandro

234

CdTe AND CdTe : Hg ALLOYS CRYSTAL GROWTH USING STOICHIOMETRIC AND OFF-STOICHIOMETRIC  

E-Print Network (OSTI)

123 CdTe AND CdTe : Hg ALLOYS CRYSTAL GROWTH USING STOICHIOMETRIC AND OFF-STOICHIOMETRIC ZONE.-Briand, 92190 Meudon/Bellevue, France Résumé. 2014 En vue de la croissance de cristaux de CdTe de haute cristaux semi-isolants Cd0, 9Hg0, 1Te. Abstract. 2014 Some aspects of the thermodynamic state of CdTe

Paris-Sud XI, Université de

235

Strong circular photogalvanic effect in ZnO epitaxial films  

SciTech Connect

A strong circular photogalvanic effect (CPGE) in ZnO epitaxial films was reported under interband excitation. It was observed that CPGE current is as large as 100 nA/W in ZnO, which is about one order in magnitude higher than that in InN film while the CPGE currents in GaN films are not detectable. The possible reasons for the above observations are the strong spin orbit coupling in ZnO or the inversed valence band structure of ZnO.

Zhang, Q.; Wang, X. Q.; Yin, C. M.; Shen, B. [State Key Laboratory of Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 (China); Chen, Y. H.; Chang, K. [Laboratory of Semiconductor Materials Science, Institute of Semiconductors, CAS, Beijing 100083 (China); Ge, W. K. [Department of Physics, Tsinghua University, Beijing 100871 (China)

2011-12-23T23:59:59.000Z

236

Polymeric nanoparticle-mediated silencing of CD44 receptor in CD34+ acute myeloid leukemia cells  

Science Journals Connector (OSTI)

Abstract The adhesion receptor CD44 plays an important role in the survival and retention of leukemic stem/progenitor cells (LSPC) within the bone marrow (BM) niche, as well as in the high relapse rates of acute myeloid leukemia (AML). Down-regulating CD44 could be clinically relevant not only for suppression of the deregulated function of LSPC but also in LSPC response to chemotherapeutic agents. Small interfering RNA (siRNA) delivery is a promising approach for AML treatment, and we recently reported effective siRNA delivery into difficult-to-transfect AML cell lines using lipid-substituted polyethylenimine/siRNA complexes (polymeric nanoparticles). In this study, we investigated polymeric nanoparticle-mediated silencing of CD44 in CD34+ LSPC cell models (leukemic KG-1 and KG-1a cell lines) as well as primary AML cells. Polymeric nanoparticle-mediated silencing decreased surface CD44 levels in KG-1, KG-1a and primary AML cells by up to 27%, 30% and 20% at day 3, respectively. Moreover, CD44 silencing resulted in induction of apoptosis in KG-1 cells, reduced adhesion of KG-1 and KG-1a cells to hyaluronic acid-coated cell culture plates and BM-MSC, and decreased adhesion of primary AML cells to BM-MSC. Our results suggest that polymeric nanoparticle-mediated silencing of CD44 might be a useful technique for inhibiting LSPC interactions with their microenvironment, thereby prohibiting leukemia progression or sensitizing LSPC to chemotherapy.

Hilal Gul-Uluda?; Juliana Valencia-Serna; Cezary Kucharski; Leah A. Marquez-Curtis; Xiaoyan Jiang; Loree Larratt; Anna Janowska-Wieczorek; Hasan Uluda?

2014-01-01T23:59:59.000Z

237

Quantification and Modeling of Tripartite CD2-, CD58FC Chimera (Alefacept)-, and CD16-mediated Cell Adhesion*  

E-Print Network (OSTI)

with human IgG1 Fc. Alefacept mediates adhesion by bridging CD2 on T cells to activating Fc receptors- dimensional and three-dimensional parameters can be deter- mined by data fitting. Alefacept competitively) portion is thought to link to immune effector mechanisms to destroy cancer cells and or over

Vale, Ronald D.

238

I-III-VI.sub.2 based solar cell utilizing the structure CuInGaSe.sub.2 CdZnS/ZnO  

DOE Patents (OSTI)

A thin film I-III-VI.sub.2 based solar cell having a first layer of copper indium gallium selenide, a second layer of cadmium zinc sulfide, a double layer of zinc oxide, and a metallization structure comprised of a layer of nickel covered by a layer of aluminum. An optional antireflective coating may be placed on said metallization structure. The cadmium zinc sulfide layer is deposited by means of an aqueous solution growth deposition process and may actually consist of two layers: a low zinc content layer and a high zinc content layer. Photovoltaic efficiencies of 12.5% at Air Mass 1.5 illumination conditions and 10.4% under AMO illumination can be achieved.

Chen, Wen S. (Seattle, WA); Stewart, John M. (Seattle, WA)

1992-01-07T23:59:59.000Z

239

Data:5468608b-a91f-44cd-b0fd-ffcf4669e677 | Open Energy Information  

Open Energy Info (EERE)

8b-a91f-44cd-b0fd-ffcf4669e677 8b-a91f-44cd-b0fd-ffcf4669e677 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Black River Falls, Wisconsin (Utility Company) Effective date: 2010/04/15 End date if known: Rate name: Residential Service Optional Time-of-Day Single Phase 7am-7pm with Parallel Generation(20kW or less) Sector: Residential Description: Power Cost Adjustment Clause All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The current cost per kilowatt-hour of energy billed is equal to the cost of power purchased for the most recent month, divided by the kilowatt-hours of energy sold. The monthly adjustment (rounded to the nearest one one-hundredth of a cent) is equal to the current cost less the base cost. The base cost of power (U) is $0.0790 per kilowatt-hour. Application: This rate schedule is optional to all Rg-1, Residential Service customers. Customers that wish to be served on this rate schedule must apply to the utility for service. Once an optional customer begins service on this rate schedule, the customer shall remain on the rate for a minimum of one year. Any customer choosing to be served on this rate schedule waives all rights to billing adjustments arising from a claim that the bill for service would be less on another rate schedule than under this rate schedule. Commitment to Community rider: Rg-2 Residential Service Optional TOD 3.0% of the total electric bill not to exceed $1.00

240

observation at CDF Dmitry Litvintsev (Fermilab CD)  

E-Print Network (OSTI)

b observation at CDF Dmitry Litvintsev (Fermilab CD) for CDF June 15, 2007 Special seminar #12 and plans q Conclusion June 15, 2007 Dmitry Litvintsev, Fermilab, CDF 2 #12;Introduction Happy to show, Fermilab, CDF 3 #12;Source of data: CDF II 3 ¡ ¡ ¢ £ ¤ total 2 ¢ ¡ ¢ £ ¤ on tape Analysis uses data

Quigg, Chris

Note: This page contains sample records for the topic "rg zn cd" 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

CD-ROM Review: It's Physics  

Science Journals Connector (OSTI)

CD-ROM REVIEWS (449) It's Physics Furry Elephant: Electricity Explained BOOK REVIEWS (450) What Are the Chances? Voodoo Deaths, Office Gossip and Other Adventures in Probability Dictionary of Mechanics: A handbook for teachers and students Intermediate 2 Physics PLACES TO VISIT (452) Spaceguard Centre WEB WATCH (455) Risk

242

THE DEFECT STRUCTURE OF CdTe (*) F. A. KRGER  

E-Print Network (OSTI)

THE DEFECT STRUCTURE OF CdTe (*) F. A. KR�GER David Packard Professor of Electrical Engineering haute résistivité. Abstract. 2014 Evidence concerning the defect structure of CdTe is reviewed

Paris-Sud XI, Université de

243

Wind Energy Resource Atlas of Armenia (CD-ROM)  

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

Resource Atlas of Armenia (CD-ROM) http:www.nrel.govdocsfy03osti33877CD.zip (ZIP 31.9 MB) NRELCD-500-33877 July 2003 Instructions: The URL above links to a zipped archive...

244

Journal of Chemical Education on CD-ROM, 1998  

Science Journals Connector (OSTI)

Journal of Chemical Education on CD-ROM, 1998 ... The Journal of Chemical Education on CD-ROM contains the text and graphics for all the articles, features, and reviews published in the Journal of Chemical Education. ...

1998-12-01T23:59:59.000Z

245

Journal of Chemical Education on CD-ROM, 1999  

Science Journals Connector (OSTI)

Journal of Chemical Education on CD-ROM, 1999 ... The Journal of Chemical Education on CD-ROM contains the text and graphics for all the articles, features, and reviews published in the Journal of Chemical Education. ...

1999-12-01T23:59:59.000Z

246

JCE Classroom Activities #1–50, on CD-ROM  

Science Journals Connector (OSTI)

JCE Classroom Activities #1–50, on CD-ROM ... JCE Classroom Activities #1–50 CD-ROM collects and categorizes the first 50 activities of the series, published in the Journal from September 1997 through January 2003. ...

Jon L. Holmes

2008-07-01T23:59:59.000Z

247

1079 Adressen Zorginstellingen Verkrijgbaar Op Cd-Rom  

Science Journals Connector (OSTI)

Adressen van zorginstellingen uit de database van ZorgGids Nederland zijn nu verkrijgbaar op twee cd-roms. Op de ene cd staan de NAWT-gegevens van 1.700 zorginstellingen in Nederland onderverdeeld per provincie.

   

2009-07-01T23:59:59.000Z

248

Optical/electrical correlations in ZnO: the plasmonic resonance...  

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

Opticalelectrical correlations in ZnO: the plasmonic resonance phase diagram. Opticalelectrical correlations in ZnO: the plasmonic resonance phase diagram. Abstract: Following...

249

Organic Molecule Functionalized Zn3P2 Nanowire Inorganic-Organic...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Organic Molecule Functionalized Zn3P2 Nanowire Inorganic-Organic Hybrid Thermoelectrics Organic Molecule Functionalized Zn3P2 Nanowire Inorganic-Organic Hybrid Thermoelectrics...

250

The reversal of the laser-beam-induced-current contrast with varying illumination density in a Cu{sub 2}ZnSnSe{sub 4} thin-film solar cell  

SciTech Connect

We apply an array of correlated spatially-resolved techniques, including ?-Raman/photoluminescence/reflectance/laser-beam-induced-current in conjunction with scanning electron microscopy and atomic force microscopy, to study the impact of the microscopic-scale thickness inhomogeneity of CdS layer in a Cu{sub 2}ZnSnSe{sub 4} thin-film solar cell. Thicker CdS regions are found to cause more light reflecting loss thus yield lower external quantum efficiencies and energy conversion efficiencies than the general area. However, these regions show much less efficiency degradation at high illumination intensity, leading to an inversion of laser-beam-induced-current contrast in the area mapping. While improving the CdS layer uniformity can boost the device performance, the finding further points out the possibility of operating thin-film photovoltaic devices based on the similar materials (such as CuInGaSe{sub 2}, CdTe, Cu{sub 2}ZnSn(S,Se){sub 4}) under a substantially higher illumination density for concentrated photovoltaic and photo-detection.

Chen, Qiong; Zhang, Yong, E-mail: yong.zhang@uncc.edu [Department of Electrical and Computer Engineering, and Energy Production and Infrastructure Center (EPIC), The University of North Carolina at Charlotte, Charlotte, North Carolina 28223 (United States)] [Department of Electrical and Computer Engineering, and Energy Production and Infrastructure Center (EPIC), The University of North Carolina at Charlotte, Charlotte, North Carolina 28223 (United States)

2013-12-09T23:59:59.000Z

251

PARS II Process Document – Project Phasing (Multiple CD-2 from Single CD-1)  

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

This document details the process by which projects that adopted Phasing approach (different phases of the same larger project are treated as separate sub-projects, resulting in multiple CD-2...

252

Studies of sputtered CdTe and CdSe solar cells.  

E-Print Network (OSTI)

??CdTe has recently become the most commercially successful polycrystalline thin filmsolar module material. Its low cost, large-area solar module is reshaping the silicondominatedsolar panel market;… (more)

Kwon, Dohyoung

2012-01-01T23:59:59.000Z

253

CdTe/CdS Thin Film Solar Cells Fabricated on Flexible Substrates.  

E-Print Network (OSTI)

??Cadmium Telluride (CdTe) is a leading thin film photovoltaic (PV) material due to its near ideal bandgap of 1.45 eV and its high optical absorption… (more)

Palekis, Vasilios

2011-01-01T23:59:59.000Z

254

Evidence of significant down-conversion in a Si-based solar cell using CuInS{sub 2}/ZnS core shell quantum dots  

SciTech Connect

We report on the increase of up to 37.5% in conversion efficiency of a Si-based solar cell after deposition of light-emitting Cd-free, CuInS{sub 2}/ZnS core shell quantum dots on the active area of the cell due to the combined effect of down-conversion and the anti- reflecting property of the dots. We clearly distinguished the effect of down-conversion from anti-reflection and estimated an enhancement of up to 10.5% in the conversion efficiency due to down-conversion.

Gardelis, Spiros, E-mail: S.Gardelis@imel.demokritos.gr; Nassiopoulou, Androula G. [NCSR Demokritos INN, Terma Patriarchou Grigoriou, Aghia Paraskevi, 15310 Athens (Greece)

2014-05-05T23:59:59.000Z

255

Good and bad features of Ni-Cd cell designs  

SciTech Connect

Processes for spacecraft Ni-Cd cells are reviewed. Mechanical impregnation is compared against chemical and thermochemical impregnation.

Gross, S.

1996-02-01T23:59:59.000Z

256

Thermokinetic investigation of binary Cu/Zn hydroxycarbonates as precursors for Cu/ZnO catalysts  

Science Journals Connector (OSTI)

Abstract A combination of thermogravimetric analysis (TG) and differential scanning calorimetry (DSC) coupled to mass spectrometry has been applied to study the thermal decomposition of Cu/Zn hydroxycarbonates, which are used as a precursor for the active methanol synthesis catalyst. Original TG and DSC profiles and results of a formal kinetic analysis of the calcination process are compared with transformations occurring in the solid phase, which has been studied by means of in situ XRD. A series of hydroxycarbonate precursors with different Cu/Zn molar ratios (40/60, 70/30, 80/20) were synthesized under conditions reported as optimum for catalytic performance. The samples contain primarily two crystalline phases, aurichalcite (Cu,Zn)5(CO3)2(OH)6 and zincian malachite (Cu,Zn)2CO3(OH)2. At least four formal decomposition stages of CO2 and H2O evolution cause the major mass loss in the TG experiments. The best-fit quality for all the studied samples was obtained for a four-step competitive reaction model. The experimental TG dependences are adequately described by the n-th order equation and 3D Jander diffusion equation. The effects of the gas flow, sample mass, and water transfer conditions on the reaction pathway were studied. The presence of H2O vapor in the reaction feed accelerates the decomposition and dramatically changes the reaction TG profile. The decomposition enthalpy of mixed Cu/Zn (80/20) hydroxycarbonate was determined, and the formation enthalpy of the decomposition intermediate, a carbonate-modified oxide, was calculated to be ?Hf° = ?633.7 ± 5.6 kJ/mol.

Andrey Tarasov; Julia Schumann; Frank Girgsdies; Nygil Thomas; Malte Behrens

2014-01-01T23:59:59.000Z

257

Neutral nitrogen acceptors in ZnO: The {sup 67}Zn hyperfine interactions  

SciTech Connect

Electron paramagnetic resonance (EPR) is used to characterize the {sup 67}Zn hyperfine interactions associated with neutral nitrogen acceptors in zinc oxide. Data are obtained from an n-type bulk crystal grown by the seeded chemical vapor transport method. Singly ionized nitrogen acceptors (N{sup ?}) initially present in the crystal are converted to their paramagnetic neutral charge state (N{sup 0}) during exposure at low temperature to 442 or 633?nm laser light. The EPR signals from these N{sup 0} acceptors are best observed near 5?K. Nitrogen substitutes for oxygen ions and has four nearest-neighbor cations. The zinc ion along the [0001] direction is referred to as an axial neighbor and the three equivalent zinc ions in the basal plane are referred to as nonaxial neighbors. For axial neighbors, the {sup 67}Zn hyperfine parameters are A{sub ?}?=?37.0?MHz and A{sub ?}?=?8.4?MHz with the unique direction being [0001]. For nonaxial neighbors, the {sup 67}Zn parameters are A{sub 1}?=?14.5?MHz, A{sub 2}?=?18.3?MHz, and A{sub 3}?=?20.5?MHz with A{sub 3} along a [101{sup ¯}0] direction (i.e., in the basal plane toward the nitrogen) and A{sub 2} along the [0001] direction. These {sup 67}Zn results and the related {sup 14}N hyperfine parameters provide information about the distribution of unpaired spin density at substitutional neutral nitrogen acceptors in ZnO.

Golden, E. M.; Giles, N. C., E-mail: Nancy.Giles@afit.edu [Department of Engineering Physics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio 45433 (United States); Evans, S. M.; Halliburton, L. E. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States)

2014-03-14T23:59:59.000Z

258

3-DIMENSIONAL COMPACT DISC (CD) MICROFLUIDIC PLATFORM Presented to the  

E-Print Network (OSTI)

3-DIMENSIONAL COMPACT DISC (CD) MICROFLUIDIC PLATFORM _______________ A Thesis Presented OF THE THESIS 3-Dimensional Compact Disc (CD) Microfluidic Platform by Nitin Edmund Harwood Master of Science in a compact disc (CD) microfluidics platform involving two or more layers. The traditional 2-Dimensional

Kassegne, Samuel Kinde

259

PRESENT LIMITATIONS OF CdTe DETECTORS IN NUCLEAR MEDICINE  

E-Print Network (OSTI)

365 PRESENT LIMITATIONS OF CdTe DETECTORS IN NUCLEAR MEDICINE R. ALLEMAND, P. BOUTEILLER, M. LAVAL quality criteria, it is necessary to compare Cd-Te detectors results (or estimated characteristics) with other methods (i. e. 8cintillation cameras) in order to know the effective interest of Cd-Te in nuclear

Boyer, Edmond

260

General Chemistry Collection for Students on CD-ROM  

Science Journals Connector (OSTI)

General Chemistry Collection for Students on CD-ROM ... The JCE: Software General Chemistry Collection CD-ROM contains software intended for use by introductory level chemistry students. ... All of this popular, previously published, peer-reviewed software is now available on a single CD-ROM for convenient access by students. ...

1997-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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

4 MARCH 2002, GSA TODAY CD-ROM Working Group*  

E-Print Network (OSTI)

4 MARCH 2002, GSA TODAY CD-ROM Working Group* ABSTRACT An integration of new seismic reflec- tion, and to be the product of progressive evolu- tion of the lithosphere. INTRODUCTION The CD-ROM (Continental Dynamics tectonism. CD-ROM integrates a series of coordi- nated seismic experiments (Keller et al., 1999

Pazzaglia, Frank J.

262

Architettura degli elaboratori -A. Sperduti Memorizzazione ottica: CD-ROM  

E-Print Network (OSTI)

i Architettura degli elaboratori - A. Sperduti Memorizzazione ottica: CD-ROM Concepiti Architettura degli elaboratori - A. Sperduti Velocità lettore CD-ROM Audio: singola velocità Velocità lineare può raggiungere Formato dati CD-ROM Modo 0=campo dati vuoto Modo 1=2048 byte dati+correzione errori

Sperduti, Alessandro

263

Performance of a Multiprocessor Multidisk CD-ROM Image Server  

E-Print Network (OSTI)

Performance of a Multiprocessor Multidisk CD-ROM Image Server Rolf Muralt, Benoit A. Gennart and unlimited, inexpensive mass storage capacities through the use of removable CD-ROM medium. Reading uncompressed or lossless compressed image data striped across multi- ple CD-ROM disks yields sustained

Hersch, Roger D.

264

Ocean Current Drifter CD-ROMs File Naming Conventions  

E-Print Network (OSTI)

Ocean Current Drifter CD-ROMs File Naming Conventions Surface Current · Data are located on disc 1 of which are located in the directory FLOATS on disc 1. In summary, the files included in this CD-ROM set on which that file resides.) #12;Technical questions regarding the CD-ROMs should be addressed to: National

265

ZnS-Graphene nanocomposite: Synthesis, characterization and optical properties  

SciTech Connect

A ZnS-Graphene nanocomposite was prepared by a facile one-step hydrothermal method using zinc nitrate hexahydrate, ethylenediamine and carbon disulfide as precursors, graphene oxide as a template. The composite was characterized by X-ray power diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, Fourier transform infrared, Raman spectra and fluorescence spectroscopy. The results show that graphene oxide was reduced to graphene in the hydrothermal reaction process. Simultaneously, the graphene sheets in the composite are exfoliated and decorated with ZnS nanoparticles. Furthermore, Raman and fluorescence properties of the composite were observed. ZnS-Graphene nanocomposite displays surface-enhanced Raman scattering activity for graphene oxide, and fluorescence enhancement property compared with pure ZnS sample. - Graphical abstract: Approach of reaction makes the reduction of grapheme oxide and the deposition of Zns on the grapheme sheets occur simultaneously and overcomes the aggregation of the grapheme sheets and Zns. Highlights: Black-Right-Pointing-Pointer Graphene oxide is reduced to graphene in the hydrothermal reaction process. Black-Right-Pointing-Pointer ZnS nanoparticles are attached onto the almost transparent graphene sheets. Black-Right-Pointing-Pointer ZnS-Graphene system shows surface-enhanced Raman scattering (SERS) activity. Black-Right-Pointing-Pointer ZnS-Graphene system displays relatively better fluorescence property than pure ZnS.

Pan Shugang [Key Laboratory for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing 210094 (China); Liu Xiaoheng, E-mail: xhliu@mail.njust.edu.cn [Key Laboratory for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing 210094 (China)

2012-07-15T23:59:59.000Z

266

Fluorescent Sensors for Zn2+ Based on a Fluorescein Platform  

E-Print Network (OSTI)

Fluorescent Sensors for Zn2+ Based on a Fluorescein Platform: Synthesis, Properties fluorescent sensors for Zn2+ that utilize fluorescein as a reporting group, Zinpyr-1 and Zinpyr-2, have been. Both Zinpyr sensors have excitation and emission wavelengths in the visible range (500 nm

Tsien, Roger Y.

267

Aerogel tempelated ZnO dye-sensitized solar cells.  

SciTech Connect

Atomic layer deposition is employed to conformally coat low density, high surface area aerogel films with ZnO. The ZnO/aerogel membranes are incorporated as photoanodes in dye-sensitized solar cells, which exhibit excellent power efficiencies of up to 2.4% under 100 mW cm{sup -2} light intensity.

Hamann, T. W.; Martinson , A. B. E.; Elam, J. W.; Pellin, M. J.; Hupp, J. T.; Materials Science Division; Northwestern Univ.

2008-01-01T23:59:59.000Z

268

E-Print Network 3.0 - anti-cd34 antibody functionalized Sample...  

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

cell Summary: , CA, USA), phycoerythrin (PE) conjugated anti-CD34 (BD- Phamingen, Palo Alto, CA, USA), anti-CD105... for the monoclonal antibodies against MSCs, CD166 and CD105,...

269

Mechanical and Electrical Properties of CdTe Tetrapods Studied by Atomic Force Microscopy  

E-Print Network (OSTI)

Electrical Properties of CdTe Tetrapods Studied by Atomicelectrical properties of CdTe tetrapod-shaped nanocrystalsIntroduction CdSe and CdTe nanocrystals possess interesting

2008-01-01T23:59:59.000Z

270

Mutational Analysis of the HIV-1 Tat Protein and its Role in Downregulating CD127 on CD8 T Cells .  

E-Print Network (OSTI)

??HIV Tat protein downregulates surface expression of the interleukin-7 receptor alpha-chain (CD127) on CD8 T cells resulting in impaired T cell proliferation and cytolytic capacity.… (more)

Sugden, Scott M.

2013-01-01T23:59:59.000Z

271

SrZn{sub 2}Sn{sub 2} and Ca{sub 2}Zn{sub 3}Sn{sub 6} - two new Ae-Zn-Sn polar intermetallic compounds (Ae: alkaline earth metal)  

SciTech Connect

SrZn{sub 2}Sn{sub 2} and Ca{sub 2}Zn{sub 3}Sn{sub 6}, two closely related new polar intermetallic compounds, were obtained by high temperature reactions of the elements. Their crystal structures were determined with single crystal XRD methods, and their electronic structures were analyzed by means of DFT calculations. The Zn-Sn structure part of SrZn{sub 2}Sn{sub 2} comprises (anti-)PbO-like {l_brace}ZnSn{sub 4/4}{r_brace} and {l_brace}SnZn{sub 4/4}{r_brace} layers. Ca{sub 2}Zn{sub 3}Sn{sub 6} shows similar {l_brace}ZnSn{sub 4/4}{r_brace} layers and {l_brace}Sn{sub 4}Zn{r_brace} slabs constructed of a covalently bonded Sn scaffold capped by Zn atoms. For both phases, the two types of layers are alternatingly stacked and interconnected via Zn-Sn bonds. SrZn{sub 2}Sn{sub 2} adopts the SrPd{sub 2}Bi{sub 2} structure type, and Ca{sub 2}Zn{sub 3}Sn{sub 6} is isotypic to the R{sub 2}Zn{sub 3}Ge{sub 6} compounds (R=La, Ce, Pr, Nd). Band structure calculations indicate that both SrZn{sub 2}Sn{sub 2} and Ca{sub 2}Zn{sub 3}Sn{sub 6} are metallic. Analyses of the chemical bonding with the electron localization function (ELF) show lone pair like basins at Sn atoms and Zn-Sn bonding interactions between the layers for both title phases, and covalent Sn-Sn bonding within the {l_brace}Sn{sub 4}Zn{r_brace} layers of Ca{sub 2}Zn{sub 3}Sn{sub 6}. - Graphical abstract: Crystal structures of the new Ae-Zn-Sn polar intermetallic phases SrZn{sub 2}Sn{sub 2} and Ca{sub 2}Zn{sub 3}Sn{sub 6}. Highlights: Black-Right-Pointing-Pointer New polar intermetallic phases SrZn{sub 2}Sn{sub 2} and Ca{sub 2}Zn{sub 3}Sn{sub 6}. Black-Right-Pointing-Pointer Obtained by high temperature reactions of the elements. Black-Right-Pointing-Pointer Single crystal XRD structure determination and DFT electronic structure calculations. Black-Right-Pointing-Pointer Closely related crystal and electronic structures. Black-Right-Pointing-Pointer Metallic conductivity coexisting with lone pairs and covalent bonding features.

Stegmaier, Saskia [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstrasse 4, 85747 Garching (Germany); Faessler, Thomas F., E-mail: Thomas.Faessler@lrz.tum.de [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstrasse 4, 85747 Garching (Germany)

2012-08-15T23:59:59.000Z

272

A study of the back contacts on CdTe/CdS solar cells D.L. Batznera  

E-Print Network (OSTI)

Institute of Technology, ZuÃ?rich, Technoparkstr. 1, 8005 ZuÃ?rich, Switzerland b ANTEC GmbH, Industriestrasse 2-4, 65779 Kelkheim, Germany Abstract Conventional back contacts on CdTe/CdS solar cells layer thickness and stability issues have been studied. Different etchants not only clean the Cd

Romeo, Alessandro

273

Effects of copper doping on the electronic properties of CdS films sintered with CdCl2  

Science Journals Connector (OSTI)

Chlorine- and copper-doped polycrystalline CdS films were prepared by coating a slurry which consisted of CdS, CdCl2, CuCl2...and propylene glycol on a glass substrate and sintering in a nitrogen atmosphere, to i...

J. T. Moon; H. B. Im

1988-10-01T23:59:59.000Z

274

ROLE OF COPPER IN THE PERFORMANCE OF CdS/CdTe SOLAR CELLS * , D. Albin2  

E-Print Network (OSTI)

simulations to reproduce and explain some of the experimental results. Introduction The performance of CdTe Cucd in CdTe [1,2]. Cu can also migrate along grain boundaries toward the main junction. The standard with a relatively simpler one in which Cu metal of varying thickness is evaporated on Te-rich CdTe surfaces

Sites, James R.

275

Novel Type-II Zn3P2/ZnO Core/Shell Nanowires: Synthesis, Characteristic, and Photoluminescence Properties  

Science Journals Connector (OSTI)

Besides this, Zn3P2 has many other advantageous physical properties in serving as a photovolatic material, such as a large optical absorption coefficient (>104 cm?1), long minority carrier diffusion length (?13 ?m), abundant and cheap constituent materials, etc.(22, 23) Zinc oxide (ZnO), with a wide direct bandgap of 3.2?3.4 ...

Peicai Wu; Tuo Sun; Yu Dai; Yanghui Sun; Yu Ye; Lun Dai

2011-03-30T23:59:59.000Z

276

Anisotropy in CdSe quantum rods  

SciTech Connect

The size-dependent optical and electronic properties of semiconductor nanocrystals have drawn much attention in the past decade, and have been very well understood for spherical ones. The advent of the synthetic methods to make rod-like CdSe nanocrystals with wurtzite structure has offered us a new opportunity to study their properties as functions of their shape. This dissertation includes three main parts: synthesis of CdSe nanorods with tightly controlled widths and lengths, their optical and dielectric properties, and their large-scale assembly, all of which are either directly or indirectly caused by the uniaxial crystallographic structure of wurtzite CdSe. The hexagonal wurtzite structure is believed to be the primary reason for the growth of CdSe nanorods. It represents itself in the kinetic stabilization of the rod-like particles over the spherical ones in the presence of phosphonic acids. By varying the composition of the surfactant mixture used for synthesis we have achieved tight control of the widths and lengths of the nanorods. The synthesis of monodisperse CdSe nanorods enables us to systematically study their size-dependent properties. For example, room temperature single particle fluorescence spectroscopy has shown that nanorods emit linearly polarized photoluminescence. Theoretical calculations have shown that it is due to the crossing between the two highest occupied electronic levels with increasing aspect ratio. We also measured the permanent electric dipole moment of the nanorods with transient electric birefringence technique. Experimental results on nanorods with different sizes show that the dipole moment is linear to the particle volume, indicating that it originates from the non-centrosymmetric hexagonal lattice. The elongation of the nanocrystals also results in the anisotropic inter-particle interaction. One of the consequences is the formation of liquid crystalline phases when the nanorods are dispersed in solvent to a high enough concentration. The preparation of the stable liquid crystalline solution of CdSe nanorods is described, as well as the large-scale alignment of the nanorods by taking advantage of the long-range orientational correlation in the liquid crystals. In addition, we investigated the phase diagram of the nanorod solution, as a step toward understanding the possible role of the long-range attractive interaction between the nanorods in the formation of lyotropic liquid crystals.

Li, Liang-shi

2003-09-01T23:59:59.000Z

277

files between "helped" and "unhelped" memory CD8 T cells to better understand  

E-Print Network (OSTI)

265 files between "helped" and "unhelped" memory CD8 T cells to better understand how memory CD8 the presence of CD4 help during "unhelped" memory CD8 T cell recall responses could not rem- edy their proliferative defects; and vice versa, the lack of CD4 help during "helped" memory CD8 T cell recall re- sponses

278

Two dimensional electron gases in polycrystalline MgZnO/ZnO heterostructures grown by rf-sputtering process  

SciTech Connect

This paper reports the formation of two-dimensional electron gas (2DEG) in rf-sputtered defective polycrystalline MgZnO/ZnO heterostructure via the screening of grain boundary potential by polarization-induced charges. As the MgZnO thickness increases, the sheet resistance reduces rapidly and then saturates. The enhancement of the interfacial polarization effect becomes stronger, corresponding to a larger amount of resistance reduction, when the Mg content in the cap layer increases. Monte Carlo method by including grain boundary scattering effect as well as 2D finite-element-method Poisson and drift-diffusion solver is applied to analyze the polycrystalline heterostructure. The experimental and Monte Carlo simulation results show good agreement. From low temperature Hall measurement, the carrier density and mobility are both independent of temperature, indicating the formation of 2DEG with roughness scattering at the MgZnO/ZnO interface.

Chin, Huai-An; Cheng, I-Chun; Huang, Chih-I; Wu, Yuh-Renn [Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan (China); Lu, Wen-Sen; Lee, Wei-Li [Institute of Physics, Academia Sinica, Taipei 11529, Taiwan (China); Chen, Jian Z. [Institute of Applied Mechanics, National Taiwan University, Taipei 10617, Taiwan (China); Chiu, Kuo-Chuang; Lin, Tzer-Shen [Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, Taiwan (China)

2010-09-15T23:59:59.000Z

279

Data:13bb074f-cd0e-44f1-ba60-225815b2e2ea | Open Energy Information  

Open Energy Info (EERE)

Service Time-of-Use RG2 Single Phase Sector: Description: To residential customers contracting for full requirements service on a voluntary basis for electric service for...

280

Global Soil Data on CD-ROM, Nov. 2000  

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

Available on CD-ROM Available on CD-ROM The ORNL DAAC now offers a CD-ROM with global soil data prepared by the Global Soil Data Task for the International Geosphere-Biosphere Programme (IGBP) Data and Information Services (DIS). The CD is entitled "Global Soil Data Products CD-ROM (IGBP-DIS)." The new CD includes the IGBP's SoilData System, which links the Global Pedon Database to the FAO/UNESCO Digital Soil Map of the World. The system allows users to generate maps and data sets for a range of original and derived soil parameters for any part of the world at soil depths and resolutions selected by the user. The CD also contains 1125 soil profiles that provide information about fundamental soil properties (e.g., depth, particle size distribution, bulk density, extractable nutrient composition) for soil classes based on FAO

Note: This page contains sample records for the topic "rg zn cd" 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

Copia da disco fisso dell'immagine Cd su Cd-Rom Una volta scaricato sul disco fisso il file in formato ISO necessario copiarlo su CD-Rom  

E-Print Network (OSTI)

Copia da disco fisso dell'immagine Cd su Cd-Rom Una volta scaricato sul disco fisso il file in formato ISO è necessario copiarlo su CD-Rom mediante masterizzazione, operazione che si esegue con un

De Cindio, Fiorella

282

Low-energy muon [LEM] study of Zn-phthalocyanine and ZnO thin films  

Science Journals Connector (OSTI)

Implantation of low-energy muons in zinc-phthalocyanine (ZnPc) thin-films leads to the formation of muoniated radical states, the fast decaying of the ? SR signal at low fields being a clear indication of muonium formation. The formation probability of these paramagnetic states is independent of the implantation depth and amounts, as in the bulk, to approximately 100% of all muons. In these molecular crystals the formation of muonium is a highly local effect and is fairly independent of crystalline structure and defects in the sample. In contrast to that, in vapour-grown ZnO films the paramagnetic signal known from bulk experiments is not observed, even for the deeper implantations. We suggest that in this case muonium is not formed due to the low concentration of free electrons. In these strongly distorted films, electrons are captured at defects and are not available for muonium formation.

H.V. Alberto; J. Piroto Duarte; A. Weidinger; R.C. Vilão; J.M. Gil; N. Ayres de Campos; K. Fostiropoulos; T. Prokscha; A. Suter; E. Morenzoni

2009-01-01T23:59:59.000Z

283

Radioactive contamination of ZnWO4 crystal scintillators  

E-Print Network (OSTI)

The radioactive contamination of ZnWO4 crystal scintillators has been measured deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN in Italy with a total exposure 3197 kg x h. Monte Carlo simulation, time-amplitude and pulse-shape analyses of the data have been applied to estimate the radioactive contamination of the ZnWO4 samples. One of the ZnWO4 crystals has also been tested by ultra-low background gamma spectrometry. The radioactive contaminations of the ZnWO4 samples do not exceed 0.002 -- 0.8 mBq/kg (depending on the radionuclide), the total alpha activity is in the range: 0.2 - 2 mBq/kg. Particular radioactivity, beta active 65Zn and alpha active 180W, has been detected. The effect of the re-crystallization on the radiopurity of the ZnWO4 crystal has been studied. The radioactive contamination of samples of the ceramic details of the set-ups used in the crystals growth has been checked by low background gamma spectrometry. A project scheme on further improvement of the radiopurity level of the ZnWO4 crystal scintillators is briefly addressed.

P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; A. M. Dubovik; S. d'Angelo; E. N. Galashov; B. V. Grinyov; A. Incicchitti; V. V. Kobychev; M. Laubenstein; L. L. Nagornaya; F. Nozzoli; D. V. Poda; R. B. Podviyanuk; O. G. Polischuk; D. Prosperi; V. N. Shlegel; V. I. Tretyak; I. A. Tupitsyna; Ya. V. Vasiliev; Yu. Ya. Vostretsov

2010-09-05T23:59:59.000Z

284

Methotrexate intercalated ZnAl-layered double hydroxide  

SciTech Connect

The anticancerous drug methotrexate (MTX) has been intercalated into an ZnAl-layered double hydroxide (LDH) using an anion exchange technique to produce LDH-MTX hybrids having particle sizes in the range of 100-300 nm. X-ray diffraction studies revealed increases in the basal spacings of ZnAl-LDH-MTX hybrid on MTX intercalation. This was corroborated by the transmission electron micrographs, which showed an increase in average interlayer spacing from 8.9 A in pristine LDH to 21.3 A in LDH-MTX hybrid. Thermogravimetric analyses showed an increase in the decomposition temperature for the MTX molecule in the LDH-MTX hybrid indicating enhanced thermal stability of the drug molecule in the LDH nanovehicle. The cumulative release profile of MTX from ZnAl-LDH-MTX hybrids in phosphate buffer saline (PBS) at pH 7.4 was successfully sustained for 48 h following Rigter-Peppas model release kinetics via diffusion. - Graphical abstract: ZnAl-layered double hydroxide intercalated with methotrexate ({approx}34% loading) promises the possibility of use of ZnAl-LDH material as drug carrier and in controlled delivery. Highlights: > ZnAl-layered double hydroxide methotrexate nanohybrid has been synthesized. > XRD and TEM studies on nanohybrid revealed successful intercalation of methotrexate. > TG and CHN analyses showed {approx}34 wt% of methotrexate loading into the nanohybrid. > Possibility of use of ZnAl-LDH material as drug carrier and in delivery.

Chakraborty, Manjusha; Dasgupta, Sudip; Soundrapandian, Chidambaram [Central Glass and Ceramic Research Institute, CSIR, 196 Raja S.C. Mullick Road, Kolkata 700032 (India); Chakraborty, Jui, E-mail: jui@cgcri.res.in [Central Glass and Ceramic Research Institute, CSIR, 196 Raja S.C. Mullick Road, Kolkata 700032 (India); Ghosh, Swapankumar, E-mail: swapankumar.ghosh2@mail.dcu.ie [National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695019 (India); Mitra, Manoj K. [Department of Metallurgical and Materials Engineering, Jadavpur University, Kolkata 700032 (India); Basu, Debabrata [Central Glass and Ceramic Research Institute, CSIR, 196 Raja S.C. Mullick Road, Kolkata 700032 (India)

2011-09-15T23:59:59.000Z

285

REGULAR ARTICLE Stability of polar ZnO surfaces studied by pair potential  

E-Print Network (OSTI)

density method Keju Sun � Hai-Yan Su � Wei-Xue Li Received: 1 September 2013 / Accepted: 16 November 2013. The overestimation of the stability of the ZnO(0001)�Zn terminal originates from more distribution of the transferred temperature sublimation processes indicated a higher sublimation rate of the ZnO(0001)�Zn surface compared

Li, Weixue

286

Photocatalytic activity of ZnO films with micro-grid structure  

Science Journals Connector (OSTI)

A layer of zinc oxide (ZnO) micro-grid was deposited on the surface of ZnO ... ZnO film and the regular arrangement of the micro-grid. The microgrid ZnO has a lower specular ... degradation experiments on methyle...

Chunzhi Li; Wenwen Wang; Junying Zhang…

2009-09-01T23:59:59.000Z

287

K and Mn co-doped BaCd{sub 2}As{sub 2}: A hexagonal structured bulk diluted magnetic semiconductor with large magnetoresistance  

SciTech Connect

A bulk diluted magnetic semiconductor was found in the K and Mn co-doped BaCd{sub 2}As{sub 2} system. Different from recently reported tetragonal ThCr{sub 2}Si{sub 2}-structured II-II-V based (Ba,K)(Zn,Mn){sub 2}As{sub 2}, the Ba{sub 1?y}K{sub y}Cd{sub 2?x}Mn{sub x}As{sub 2} system has a hexagonal CaAl{sub 2}Si{sub 2}-type structure with the Cd{sub 2}As{sub 2} layer forming a honeycomb-like network. The Mn concentration reaches up to x???0.4. Magnetization measurements show that the samples undergo ferromagnetic transitions with Curie temperature up to 16?K. With low coercive field of less than 10?Oe and large magnetoresistance of about ?70%, the hexagonal structured Ba{sub 1?y}K{sub y}Cd{sub 2?x}Mn{sub x}As{sub 2} can be served as a promising candidate for spin manipulations.

Yang, Xiaojun; Zhang, Pan; Jiang, Hao; Luo, Yongkang; Chen, Qian; Feng, Chunmu; Tao, Qian; Cao, Guanghan; Xu, Zhu-An, E-mail: zhuan@zju.edu.cn [Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027 (China); Li, Yuke; Cao, Chao; Dai, Jianhui [Department of Physics, Hangzhou Normal University, Hangzhou 310036 (China)

2013-12-14T23:59:59.000Z

288

Luminescence Enhancement of CdTe Nanostructures in LaF3:Ce/CdTe Nanocomposites  

SciTech Connect

Radiation detection demands new scintillators with high quantum efficiency, high energy resolution and short luminescence lifetimes. Nanocomposites consisting of quantum dots and Ce3+ doped nanophosphors may be able to meet these requirements. Here we report the luminescence of LaF3:Ce/CdTe nanocomposites which were synthesized by a wet chemistry method. In LaF3:Ce/CdTe nanocomposites the CdTe quantum dots are converted into nanowires, while in LaF3/CdTe nanocomposites no such conversion is observed. The CdTe luminescence in LaF3:Ce/CdTe nanocomposites is enhanced about 5 times, while in LaF3/CdTe nanocomposites no enhancement was observed. Energy transfer, light-re-absorption and surface passivation are likely the reasons for the luminescence enhancement.

Yao, Mingzhen; Zhang, Xing; Ma, Lun; Chen, Wei; Joly, Alan G.; Huang, Jinsong; Wang, Qingwu

2010-11-15T23:59:59.000Z

289

Open-circuit voltage, fill factor, and efficiency of a CdS/CdTe solar cell  

SciTech Connect

The dependences of the open-circuit voltage, fill factor, and efficiency of the thin-film CdS/CdTe solar cell on the resistivity {rho} and carrier lifetime {tau} in the absorbing CdTe layer were studied. In the common case in which the uncompensated acceptor concentration and the electron lifetime in the CdTe layer are within 10{sup 15}-10{sup 16} cm{sup -3} and 10{sup -10}-10{sup -9} s, the calculation results correspond to the achieved efficiency of the best thin-film CdS/CdTe solar cells. It was shown that, by decreasing {rho} and increasing {tau} in the absorbing CdTe layer, the open-circuit voltage, fill factor, and efficiency can be substantially increased, with their values approaching the theoretical limit for such devices.

Kosyachenko, L. A., E-mail: lakos@chv.ukrpack.net; Grushko, E. V. [Yuriy Fedkovych Chernivtsi National University (Ukraine)

2010-10-15T23:59:59.000Z

290

High altitude balloon flights of position sensitive CdZnTe detectors for high energy X-ray astronomy  

Science Journals Connector (OSTI)

Cadmium Zinc Telluride (CZT) is a semiconductor detector well suited for high energy X-ray astronomy. The High-Energy X-ray Imaging Spectrometer (HEXIS) program is developing this technology for use in a hard X-ray all-sky survey and as a focal plane imager for missions such as FAR_XITE and Constellation X. We have designed a novel electrode geometry that improves interaction localization and depth of interaction determination. The HEXIS program has flown two high altitude balloon payloads from Ft. Summer NM to investigate background properties and shielding effects on a position sensitive CZT detector in the energy range of 20–350 keV.

Kimberly R. Slavis; Paul Dowkontt; Fred Duttweiler; John Epstein; Paul L. Hink; George L. Huszar; Philippe C. Leblanc; James L. Matteson; Robert T. Skelton; Ed Stephan

2000-01-01T23:59:59.000Z

291

OPTIMIZATION OF VIRTUAL FRISCH-GRID CdZnTe DETECTOR DESIGNS FOR IMAGING AND SPECTROSCOPY OF GAMMA RAYS.  

SciTech Connect

In the past, various virtual Frisch-grid designs have been proposed for cadmium zinc telluride (CZT) and other compound semiconductor detectors. These include three-terminal, semi-spherical, CAPture, Frisch-ring, capacitive Frisch-grid and pixel devices (along with their modifications). Among them, the Frisch-grid design employing a non-contacting ring extended over the entire side surfaces of parallelepiped-shaped CZT crystals is the most promising. The defect-free parallelepiped-shaped crystals with typical dimensions of 5x5{approx}12 mm3 are easy to produce and can be arranged into large arrays used for imaging and gamma-ray spectroscopy. In this paper, we report on further advances of the virtual Frisch-grid detector design for the parallelepiped-shaped CZT crystals. Both the experimental testing and modeling results are described.

BOLOTNIKOV,A.E.; ABDUL-JABBAR, N.M.; BABALOLA, S.; CAMARDA, G.S.; CUI, Y.; HOSSAIN, A.; JACKSON, E.; JACKSON, H.; JAMES, J.R.; LURYI, A.L.; JAMES, R.B.

2007-08-21T23:59:59.000Z

292

Energy Transfer Dynamics and Dopant Luminescence in Mn-Doped CdS/ZnS Core/Shell Nanocrystals.  

E-Print Network (OSTI)

??Mn-doped II-VI semiconductor nanocrystals exhibit bright dopant photoluminescence that has potential usefulness for light emitting devices, temperature sensing, and biological imaging. The bright luminescence comes… (more)

Chen, Hsiang-Yun

2012-01-01T23:59:59.000Z

293

Modification of solid state CdZnTe (CZT) radiation detectors with high sensitivity or high resolution operation  

DOE Patents (OSTI)

An apparatus and process is provided to illustrate the manipulation of the internal electric field of CZT using multiple wavelength light illumination on the crystal surface at RT. The control of the internal electric field is shown through the polarization in the IR transmission image under illumination as a result of the Pockels effect.

Washington, II, Aaron L; Duff, Martine C; Teague, Lucile C; Burger, Arnold; Groza, Michael

2014-11-11T23:59:59.000Z

294

SIXTH QUARTERLY REPORT OF RESEARCH ON CuxS - (Cd,Zn)S PHOTOVOLTAIC SOLAR ENERGY CONVERTERS  

E-Print Network (OSTI)

for use in experimental photovoltaic cells. Hall mobilityvacuum method for photovoltaic cell fabrication" However,

Chin, B.L.

2011-01-01T23:59:59.000Z

295

Green electroluminescence from ZnO/n-InP heterostructure fabricated by metalorganic chemical vapour deposition  

Science Journals Connector (OSTI)

Vertically aligned ZnO films were deposited on n-InP by metalorganic chemical vapour deposition. X-ray diffraction, field emission scanning electron microscopy and photoluminescence measurements demonstrated that the ZnO films had good quality. By evaporating AuZn electrodes on both ZnO and InP surfaces, a ZnO-based light emitting device was fabricated. Under forward voltage, weak green emissions can be observed in darkness.

Huichao Zhu; Baolin Zhang; Xiangping Li; Xin Dong; Wancheng Li; Hesong Guan; Yongguo Cui; Xiaochuan Xia; Tianpeng Yang; Yuchun Chang; Guotong Du

2007-01-01T23:59:59.000Z

296

Development of CdS/CdTe Tin Film Devices for St. Gobain Coated Glass: Cooperative Research and Development Final Report, CRADA Number CRD-08-317  

SciTech Connect

Research performed at NREL to produce CdS/CdTe devices on St. Gobain coated-glass material to establish a baseline CdS/CdTe device process and determine baseline device performance parameters on St. Gobain material. Performance of these baseline devices compared to similar devices produced by applying the established baseline CdS/CdTe process on alternative St. Gobain coated-glass materials.

Gessert, T.

2012-04-01T23:59:59.000Z

297

Compton profile study of polycrystalline ZnBr{sub 2}  

SciTech Connect

The first ever Compton profile study of polycrystalline ZnBr{sub 2} is presented in this paper. The measurement of polycrystalline sample of ZnBr{sub 2} is performed using 59.54 keV gamma-rays emanating from an {sup 241}Am radioisotope. Theoretical calculations are performed following the Ionic model calculations for a number of configurations Zn{sup +x}Br{sub 2}{sup -x/2}(0.0{<=}x{<=}2.0 in step of 0.5) utilizing free atom profiles. The ionic model suggest transfer of 2.0 electrons from 4 s state of Zn to 4 p state of two Br atoms. The autocorrelation function B(z) is also derived from experiment and the most favoured ionic valence Compton profiles.

Dhaka, M. S. [Department of Physics, Engineering College Bikaner, Bikaner, 334004, Rajasthan (India); Sharma, G. [Department of Physics, Bansthali University, Bansthali, 304022, Rajasthan (India); Mishra, M. C.; Kothari, R. K.; Sharma, B. K. [Department of Physics, University of Rajasthan, Jaipur, 302004, Rajasthan (India)

2010-12-01T23:59:59.000Z

298

Aerosol synthesis and Rietveld analysis of tetragonal () PdZn...  

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

method. Detailed structural analysis shows that this material contains little or no vacancies and minimal PdZn disorder. Citation: Peterson EJ, B Halevi, B Kiefer, MN Spilde, AK...

299

Spectroscopic Analysis of Impurity Precipitates in CdS Films  

SciTech Connect

Impurities in cadmium sulfide (CdS) films are a concern in the fabrication of copper (indium, gallium) diselenide (CIGS) and cadmium telluride (CdTe) photovoltaic devices. Devices incorporating chemical-bath-deposited (CBD) CdS are comparable in quality to devices incorporating purer CdS films grown using vacuum deposition techniques, despite the higher impurity concentrations typically observed in the CBD CdS films. In this paper, we summarize and review the results of Fourier transform infrared (FTIR), Auger, electron microprobe, and X-ray photoelectron spectroscopic (XPS) analyses of the impurities in CBD CdS films. We show that these impurities differ as a function of substrate type and film deposition conditions. We also show that some of these impurities exist as 10{sup 2} micron-scale precipitates.

Webb, J. D.; Keane, J.; Ribelin, R.; Gedvilas, L.; Swartzlander, A.; Ramanathan, K.; Albin, D. S.; Noufi, R.

1999-10-31T23:59:59.000Z

300

Radioactive contamination of ZnWO4 crystal scintillators  

E-Print Network (OSTI)

The radioactive contamination of ZnWO4 crystal scintillators has been measured deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN in Italy with a total exposure 3197 kg x h. Monte Carlo simulation, time-amplitude and pulse-shape analyses of the data have been applied to estimate the radioactive contamination of the ZnWO4 samples. One of the ZnWO4 crystals has also been tested by ultra-low background gamma spectrometry. The radioactive contaminations of the ZnWO4 samples do not exceed 0.002 â?? 0.8 mBq/kg (depending on the radionuclide), the total alpha activity is in the range: 0.2 - 2 mBq/kg. Particular radioactivity, beta active 65Zn and alpha active 180W, has been detected. The effect of the re-crystallization on the radiopurity of the ZnWO4 crystal has been studied. The radioactive contamination of samples of the ceramic details of the set-ups used in the crystals growth has been checked by low background gamma spectrometry. A project scheme on further improvement of the radiopur...

Belli, P; Cappella, F; Cerulli, R; Danevich, F A; Dubovik, A M; d'Angelo, S; Galashov, E N; Grinyov, B V; Incicchitti, A; Kobychev, V V; Laubenstein, M; Nagornaya, L L; Nozzoli, F; Poda, D V; Podviyanuk, R B; Polischuk, O G; Prosperi, D; Shlegel, V N; Tretyak, V I; Tupitsyna, I A; Vasiliev, Ya V; Vostretsov, Yu Ya

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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

Nanoscale order in ZnSe:(Mg, O)  

SciTech Connect

Self-assembling of 1O4Mg identical tetrahedral clusters resulting in the nanoscale order in ZnSe:(Mg, O) is presented. Co-doping transforms ZnSe into Mg{sub x}Zn{sub 1?x}O{sub y}Se{sub 1?y} alloy of MgO, MgSe, ZnO and ZnSe. The decrease of a sum of the enthalpies of the constituent compounds and diminution of the strain energy are the causes of this phenomenon. The self-assembling conditions are obtained from the free energy minimum when magnesium and oxygen are in the dilute and ultra dilute limits, correspondingly. The occurrence of 1O4Mg clusters and completion of self-assembling when all oxygen atoms are in clusters are results of the continuous phase transitions. The self-assembling occurrence temperature does not depend on the oxygen content and it is a function of magnesium concentration. Mg{sub x}Zn{sub 1?x}O{sub y}Se{sub 1?y} with all oxygen atoms in clusters can be obtained in temperature ranges from T = 206 °C (x = 0.001, y = 1×10{sup ?4}) to T = 456 °C (x = 0.01, y = 1×10{sup ?4}) and from T = 237 °C (x = 0.001, y = 1×10{sup ?6}) to T = 462 °C (x = 0.01, y = 1×10{sup ?6})

Elyukhin, Vyacheslav A. [Department of Electrical Engineering, Centro de Investigación y de Estudios Avanzados del IPN, Avenida Instituto Politecnico Nacional 2508, 07360 México (Mexico)

2014-02-21T23:59:59.000Z

302

Doping profiles in CdTe/CdS thin film solar cells  

Science Journals Connector (OSTI)

CdS/CdTe thin film solar cells showing comparable properties as commercial cells have been prepared by close space sublimation (CSS) in our own laboratory. We characterised the cells by capacitance–voltage profiling (C–V), thermal admittance spectroscopy (TAS), and thermally stimulated capacitance measurements (TSCAP). The doping profiles of the CdTe layer obtained by C–V measurements confirm the well known rise in dopant concentration with increasing depth if the usual evaluation procedure is employed. However, the TAS and TSCAP measurements reveal deep acceptors in the CdTe layer with a large concentration exceeding that of the shallow dopants. Under these conditions, C–V measurements are shown to yield an apparently rising dopant concentration even for homogeneous doping. A combined simulation of doping profiles measured at different temperatures using a fixed and uniform shallow and deep doping fits well to measured doping concentration. These results indicate how to get reliable information on the shallow dopant concentration.

U. Reislöhner; M. Hädrich; N. Lorenz; H. Metzner; W. Witthuhn

2007-01-01T23:59:59.000Z

303

Industrial Upscaling of CdTe/CdS Thin Film Solar Cells , A. Bosioa  

E-Print Network (OSTI)

, with the participation of the Marcegaglia industrial group, IFIS Bank of Venice, the contribution of Ministry 905223. E-mail address: Nicola.Romeo@unipr.it (Nicola Romeo). 1 INTRODUCTION CdTe with its energy gap" which means that only a few microns of the material are needed to absorb 90% of photons with energy

Romeo, Alessandro

304

Properties of ZnO/Cu/ZnO multilayer films deposited by simultaneous RF and DC magnetron sputtering at different substrate temperatures  

Science Journals Connector (OSTI)

ZnO/Cu/ZnO transparent conductive multilayer films are prepared by simultaneous RF sputtering of ZnO and DC sputtering of Cu. The properties of the multilayer films are studied at different substrate temperatures. Sheet resistance of the multilayer film ... Keywords: Electrical and optical properties, Multilayer, Sputtering, TCO

D. R. Sahu; Jow-Lay Huang

2007-03-01T23:59:59.000Z

305

DIRECT EVIDENCE OF MG-ZN-P ALLOY FORMATION IN MG/ZN3P2 SOLAR CELLS Gregory M. Kimball  

E-Print Network (OSTI)

Te, CIGS, a-Si) for thin film photovoltaics. The record solar energy conversion efficiency for Zn3P2 cells] or liquid contacts,[5] with Mg/Zn3P2 Schottky diodes having exhibited >6% solar energy-conversion efficiency], and long (5-10 m) minority-carrier diffusion lengths [2]. To date, Zn3P2 has been produced almost

Kimball, Gregory

306

Solar Syngas Production via H2O/CO2-Splitting Thermochemical Cycles with Zn/ZnO and FeO/Fe3O4 Redox Reactions  

Science Journals Connector (OSTI)

Solar Syngas Production via H2O/CO2-Splitting Thermochemical Cycles with Zn/ZnO and FeO/Fe3O4 Redox Reactions† ... The first step, driven by concentrated solar radiation, is the endothermic thermolysis of ZnO producing a gaseous mixture of O2 and ... ...

A. Stamatiou; P. G. Loutzenhiser; A. Steinfeld

2009-08-28T23:59:59.000Z

307

Ordered zinc-vacancy induced Zn0.75Ox nanophase structure Yong Ding, Rusen Yang, Zhong Lin Wang *  

E-Print Network (OSTI)

Ordered zinc-vacancy induced Zn0.75Ox nanophase structure Yong Ding, Rusen Yang, Zhong Lin Wang induced by Zn-vacancy has been discovered to grow on wurtzite ZnO nanobelts. The superstructure grows parameters of ZnO. The superstructured phase is resulted from high-density Zn vacancies orderly distributed

Wang, Zhong L.

308

Synthesis of reduced graphene oxide/ZnO nanorods composites on graphene coated PET flexible substrates  

SciTech Connect

Graphical abstract: - Highlights: • ZnO nanorods synthesized on CVD-graphene and rGO surfaces, respectively. • ZnO/CVD-graphene and ZnO/rGO form a distinctive porous 3D structure. • rGO/ZnO nanostructures possibility in energy storage devices. - Abstract: In this work, reduced graphene oxide (rGO)/ZnO nanorods composites were synthesized on graphene coated PET flexible substrates. Both chemical vapor deposition (CVD) graphene and reduced graphene oxide (rGO) films were prepared following by hydrothermal growth of vertical aligned ZnO nanorods. Reduced graphene sheets were then spun coated on the ZnO materials to form a three dimensional (3D) porous nanostructure. The morphologies of the ZnO/CVD graphene and ZnO/rGO were investigated by SEM, which shows that the ZnO nanorods grown on rGO are larger in diameters and have lower density compared with those grown on CVD graphene substrate. As a result of fact, the rough surface of nano-scale ZnO on rGO film allows rGO droplets to seep into the large voids of ZnO nanorods, then to form the rGO/ZnO hierarchical structure. By comparison of the different results, we conclude that rGO/ZnO 3D nanostructure is more desirable for the application of energy storage devices.

Huang, Lei, E-mail: leihuang@shnu.edu.cn; Guo, Guilue; Liu, Yang; Chang, Quanhong; Shi, Wangzhou

2013-10-15T23:59:59.000Z

309

Indium and tellurium doping of CdS crystals in cadmium vapor and their luminescent properties  

Science Journals Connector (OSTI)

A technique is devised for vapor-phase doping of CdS in the quaternary system Cd-In-Te-S. CdS crystals are doped with In and Te via four-zone ... InTe vapors. The luminescence spectra of the CdS?In,Te?[Cd] crysta...

I. N. Odin; M. V. Chukichev; M. E. Rubina

310

Indium and tellurium doping of CdS crystals in cadmium vapor and their luminescent properties  

Science Journals Connector (OSTI)

—A technique is devised for vapor-phase doping of CdS in the quaternary system Cd—In—Te—S. CdS crystals are doped with In and Te via four-zone ... InTe vapors. The luminescence spectra of the CdS?In,Te?[Cd] cryst...

I. N. Odin; M. V. Chukichev; M. E. Rubina

311

Luminescent Properties of CdS Crystals Doped with Gallium and Tellurium in Cadmium Vapor  

Science Journals Connector (OSTI)

A technique is devised for vapor-phase doping CdS in the quaternary system Cd–Ga–Te–S. CdS crystals are doped with Ga and Te via four-zone ... and Cd (the more volatile component of CdS). The luminescence spectra...

I. N. Odin; M. V. Chukichev; M. E. Rubina

2003-07-01T23:59:59.000Z

312

The effect of impurities on the doping and VOC of CdTe/CdS thin film solar cells  

Science Journals Connector (OSTI)

The effect of introducing impurities in CdTe, namely antimony (Sb) and oxygen (O), on the net carrier concentration in CdS/CdTe solar cells and on their open-circuit voltage (VOC) has been investigated. Oxygen was introduced in the CdTe films during the deposition of this layer by the close-spaced sublimation process. The total pressure was held constant at 1330 Pa (N2 and O2). The amount of oxygen was varied by varying its partial pressure. Antimony was introduced into CdTe using a post-deposition diffusion process. Following the deposition of CdTe a thin film (a few nm) of Sb was deposited onto the CdTe surface and subsequently heat-treated to cause in-diffusion of Sb. The temperature and time during the diffusion process were varied in the range of 300–525 °C and 20–160 min respectively. In both instances it was possible to vary (increase) the doping concentration in CdTe. The increase in doping was accompanied by an increase in VOC. However, in all instances the doping in CdTe reached a maximum value, beyond which further increases were not possible leading to saturation in VOC. The highest VOC measured was similar to state-of-the-art values in the range of 800–830 mV, and the highest doping concentration measured was in the 1016 cm? 3 range.

H. Zhao; Alvi Farah; D. Morel; C.S. Ferekides

2009-01-01T23:59:59.000Z

313

Effect of Manganese Concentration in the Cd1-xMnxTe/CdTe Tandem Structure on Photovoltaic Energy Conversion  

Science Journals Connector (OSTI)

Abstract The photovoltaic electricity is obtained by direct conversion of sunlight into electricity by solar cells. The objective of this work is the study and simulation of a Tandem photovoltaic structure based on Cd1-xMnxTe as top material cell. This paper describes the optimization of energy efficiency for Cd1-xMnxTe thin films deposited by epitaxy on CdTe substrat. We present the impact of the manganese concentration in Cd1-xMnxTe thin films on solar cells performances. Our study includes simulation results to show the conversion efficiency and main performances factors as function of the manganese concentration.

A. Aissat; M. El Bey; M. Fathi; J.P. Vilcot

2013-01-01T23:59:59.000Z

314

LE BULLETIN DE L'EPI N 56 LE CD ROM -MMOIRE LASER LE CD ROM -MMOIRE LASER  

E-Print Network (OSTI)

212 LE BULLETIN DE L'EPI N° 56 LE CD ROM - M�MOIRE LASER LE CD ROM - M�MOIRE LASER R. ALLARI Le'informations textuelles, graphiques et sonores, son ouverture à de nouvelles démarches d'accès à ces données, le CD ROM;213 R. ALLARI LE BULLETIN DE L'EPI Numérique #12;214 LE BULLETIN DE L'EPI LE CD ROM - M�MOIRE LASER

Paris-Sud XI, Université de

315

QUANTIFICATION OF LOSSES IN THIN-FILM CdS/CdTe SOLAR CELLS S.H. Demtsu and J.R. Sites  

E-Print Network (OSTI)

QUANTIFICATION OF LOSSES IN THIN-FILM CdS/CdTe SOLAR CELLS S.H. Demtsu and J.R. Sites Department of Physics, Colorado State University, Fort Collins, CO 80523, USA ABSTRACT Quantification of solar cell Thin-film CdS/CdTe devices have been studied extensively, but some basic underlying properties

Sites, James R.

316

Phase-Pure Cu,Zn,Al Hydrotalcite-like Materials as Precursors for Copper rich Cu/ZnO/Al2O3 Catalysts  

Science Journals Connector (OSTI)

Zincian malachite or rosasite (Cu,Zn)2(CO3)(OH), aurichalcite (Cu,Zn)5(CO3)2(OH)6, and hydrotalcite-like (htl) materials of the general composition ((Cu,Zn)1?xAlx)(OH)2(CO3)x/2·m H2O are the typical hydroxy carbonate precursor phases for such catalysts. ... (5) The relevance of the individual precursor phases for applied Cu/ZnO/Al2O3 or binary Cu/ZnO model catalysts is controversially discussed in the literature and aurichalcite,(6) rosasite,(7) zincian malachite,(1, 8) or a phase mixture of rosasite and hydrotalcite(9) have been suggested as desired precursor phases leading to highly active catalysts. ... (52) It is noted that such carbonate species have also been observed for the binary CuZn precursors zincian malachite and aurichalcite in course of the preparation of Cu/ZnO catalysts. ...

Malte Behrens; Igor Kasatkin; Stefanie Kühl; Gisela Weinberg

2009-12-22T23:59:59.000Z

317

Optical-Fiber-Based, Time-Resolved Photoluminescence Spectrometer for Thin-Film Absorber Characterization and Analysis of TRPL Data for CdS/CdTe Interface: Preprint  

SciTech Connect

We describe the design of a time resolved photoluminescence (TRPL) spectrometer for rapid semiconductor absorber characterization. Simplicity and flexibility is achieved by using single optical fiber to deliver laser pulses and to collect photoluminescence. We apply TRPL for characterization of CdS/CdTe absorbers after deposition, CdCl2 treatment, Cu doping, and back contact formation. Data suggest this method could be applied in various stages of PV device processing. Finally, we show how to analyze TRPL data for CdS/CdTe absorbers by considering laser light absorption depth and intermixing at CdS/CdTe interface.

Kuciauskas, D.; Duenow, J. N.; Kanevce, A.; Li, J. V.; Young, M. R.; Dippo, P.; Levi, D. H.

2012-06-01T23:59:59.000Z

318

Atomistic simulation of CdTe solid-liquid coexistence equilibria...  

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

simulation of CdTe solid-liquid coexistence equilibria. Atomistic simulation of CdTe solid-liquid coexistence equilibria. Abstract: Atomistic simulations of CdTe using a...

319

Strain relaxation of CdTe films growing on lattice-mismatched substrates  

E-Print Network (OSTI)

gap approaches the value of bulk CdTe crystals. This makesbulk crystals with crystalline CdTe ?lms for the purpose ofthe top layer of thick CdTe ?lms grown on Si(001) substrate

Ma, Zhixun; Yu, Kin Man; Walukiewicz, Wladek; Yu, Peter Y.; Mao, Samuel S.

2009-01-01T23:59:59.000Z

320

Shunt Passivation Process for CdTe Solar Cell - New Post Deposition Technique.  

E-Print Network (OSTI)

?? A cadmium sulfide / cadmium telluride (CdS/CdTe) solar cell consists of thedevice stack: Glass substrate / SnO2:F (TCO, transparent conductive oxide) / CdS (n-type… (more)

Tessema, Misle Mesfin

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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.


321

E-Print Network 3.0 - alpha chain cd25 Sample Search Results  

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

administration of anti- CD25 (interleukin-2 receptor alpha) monoclonal antibody. Cancer Res. 59:3128-3133. 9... occurring CD25+CD4+ regulatory T cells (T reg cells) are...

322

Textbook of Dermatology on CD-ROM. by Thomas B. Habif, MD  

E-Print Network (OSTI)

edition was released a CD-ROM version also became available.The CD-ROM contains the unabridged text of the print versionadditional features of the CD-ROM as compared to the print

Haycox, Claire L. MD PhD

1997-01-01T23:59:59.000Z

323

Are you looking for shipboard ADCP? Moored ADCP on CD-ROM Introduction  

E-Print Network (OSTI)

Are you looking for shipboard ADCP? Moored ADCP on CD-ROM Introduction This database contains. Since April 1994, AOML has been receiving the binary data from NSWC. CD-ROM Contents This CD-ROM

324

Photodynamic action of curcumin derived polymer modified ZnO nanocomposites  

SciTech Connect

Highlights: ? ZnO/PVA nano sensitized with curcumin and its metal complex were synthesized by vacuum evaporation method. ? M/cur sensitized on ZnO/PVA nanocomposites were characterized. ? Generation of {sup 1}O{sub 2} and ROS were detected by optical and EPR-spin trapping method. ? It was found that photoinduced cleavage of DNA using Zn/cur–ZnO/PVA was superior. ? Photodegradation of MB in water catalyzed by ZnO/PVA–Zn/cur was also superior under visible light. -- Abstract: The photodynamic action of ZnO nano can be improved by modifying the surface by PVA and encapsulating the natural product, curcumin. The synthesized ZnO/PVA nanocomposites have been characterized using XRD, SEM, TEM, FTIR, TG–DTA, etc. Here we are reporting the photodynamic effect of ZnO nanocomposites on pUC18 DNA. Based on optical and EPR measurements, singlet oxygen and other ROS were responsible for photocleavage of DNA. Most importantly, derived curcumin modified ZnO/PVA nanocomposites were comparatively more effective than derived curcumin complex against HeLa cell lines under in vitro condition. In addition, photodegradation of methylene blue (MB) in water catalyzed by nano ZnO/PVA–curcumin derivative was investigated at room temperature. Under visible irradiation photocatalytic activity of ZnO nanomaterial sensitized curcumin was higher than those of curcumin and nano ZnO.

Hariharan, R.; Senthilkumar, S. [P.G. Department of Chemistry, Cardamom Planters’ Association College, Bodinayakanur 625513, Tamil Nadu (India)] [P.G. Department of Chemistry, Cardamom Planters’ Association College, Bodinayakanur 625513, Tamil Nadu (India); Suganthi, A., E-mail: suganthiphd09@gmail.com [P.G. and Research Department of Chemistry, Thiagarajar College, Madurai 625009, Tamil Nadu (India); Rajarajan, M., E-mail: rajarajan_1962@yahoo.com [P.G. Department of Chemistry, Cardamom Planters’ Association College, Bodinayakanur 625513, Tamil Nadu (India)

2012-11-15T23:59:59.000Z

325

Structure of liquid and glassy ZnCl2  

Science Journals Connector (OSTI)

The method of isotope substitution in neutron diffraction was used to measure the structure of liquid ZnCl2 at 332(5)?°C and glassy ZnCl2 at 25(1)?°C. The partial structure factors were obtained from the measured diffraction patterns by using the method of singular value decomposition and by using the reverse Monte Carlo procedure. The partial structure factors reproduce the diffraction patterns measured by high-energy x-ray diffraction once a correction for the resolution function of the neutron diffractometer has been made. The results show that the predominant structural motif in both phases is the corner sharing ZnCl4 tetrahedron and that there is a small number of edge-sharing configurations, these being more abundant in the liquid. The tetrahedra organize on an intermediate length scale to give a first sharp diffraction peak in the measured diffraction patterns at a scattering vector kFSDP?1?Å?1 that is most prominent for the Zn-Zn correlations. The results support the notion that the relative fragility of tetrahedral glass forming MX2 liquids is related to the occurrence of edge-sharing units.

Anita Zeidler; Philip S. Salmon; Richard A. Martin; Takeshi Usuki; Philip E. Mason; Gabriel J. Cuello; Shinji Kohara; Henry E. Fischer

2010-09-23T23:59:59.000Z

326

Dependence of the efficiency of a CdS/CdTe solar cell on the absorbing layer's thickness  

SciTech Connect

On the basis of the continuity equation, the spatial distribution of photogenerated excess electrons in the neutral region of the CdTe layer in a CdS/CdTe heterostructure is analyzed taking into account recombination at the rear surface of the layer. It is demonstrated that, owing to diffusion, excess electrons penetrate deep into the CdTe layer at distances far exceeding the effective penetration length for solar radiation. Calculations of the short-circuit current indicate that, for electron lifetimes of 10{sup -10}-10{sup -9} s, typical of thin-film CdS/CdTe solar cells, recombination losses are insignificant if the CdTe layer's thickness amounts to 3-4 {mu}m but increase dramatically if the thickness is below 1-1.5 {mu}m. In order to eliminate recombination losses in more efficient solar cells where the electron lifetime is {>=}10{sup -8} s the absorbing CdTe layer needs to be much thicker.

Kosyachenko, L. A., E-mail: lakos@chv.ukrpack.net; Savchuk, A. I.; Grushko, E. V. [Chernivtsi National University (Ukraine)

2009-08-15T23:59:59.000Z

327

Magnetoluminescence of CdTe/MnTe/CdMgTe heterostructures with ultrathin MnTe layers  

SciTech Connect

CdTe/MnTe/CdMgTe quantum-well structures with one or two monolayers of MnTe inserted at CdTe/CdMgTe interfaces were fabricated. The spectra of the excitonic luminescence from CdTe quantum wells and their variation with temperature indicate that introduction of ultrathin MnTe layers improves the interface quality. The effect of a magnetic field in the Faraday configuration on the spectral position of the exciton-emission peaks indicates that frustration of magnetic moments in one-monolayer MnTe insertions is weaker than in two-monolayer insertions. The effect of a magnetic field on the exciton localization can be explained in terms of the exciton wave-function shrinkage and obstruction of the photoexcited charge-carrier motion in the quantum well.

Agekyan, V. F., E-mail: vfag@rambler.ru [St. Petersburg State University, Fock Institute of Physics (Russian Federation); Holz, P. O. [Polish Academy of Sciences, Institute of Physics (Poland); Karczewski, G. [Linkoeping University (Sweden); Katz, V. N. [St. Petersburg State University, Fock Institute of Physics (Russian Federation); Moskalenko, E. S. [Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation); Serov, A. Yu.; Filosofov, N. G. [St. Petersburg State University, Fock Institute of Physics (Russian Federation)

2011-10-15T23:59:59.000Z

328

Enhanced photoelectrochemical responses of ZnO films through Ga and N codoping  

SciTech Connect

We report on the crystallinity and photoelectrochemical (PEC) response of ZnO thin films codoped by Ga and N. The ZnO:(Ga,N) thin films were deposited by cosputtering at room temperature and followed by postannealing at 500 deg. C in air for 2 h. We found that ZnO:(Ga,N) thin films exhibited significantly enhanced crystallinity compared to ZnO doped solely with N at the same growth conditions. Furthermore, ZnO:(Ga,N) thin films exhibited enhanced N incorporation over ZnO doped solely with N at high temperatures. As a result, ZnO:(Ga,N) thin films achieved dramatically improved PEC response, compared to ZnO thin films doped solely with N at any conditions. Our results suggest a general way to improve PEC response for wide-band-gap oxides.

Ahn, Kwang-Soon; Yan, Yanfa; Shet, Sudhakar; Deutsch, Todd; Turner, John; Al-Jassim, Mowafak [National Renewable Energy Laboratory, Golden, Colorado 80401 (United States)

2007-12-03T23:59:59.000Z

329

Structural Studies of Al:ZnO Powders and Thin Films | Stanford...  

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

Ingham, Associate Investigator, MacDiarmid Institute for Advanced Materials & Nanotechnology Al-doped ZnO (Al:ZnO) is a promising transparent conducting oxide. We have used...

330

E-Print Network 3.0 - applied zn fe Sample Search Results  

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

carbonate and other Zn-containing compounds1 Graldine Sarret, Emiko Harada, Yong-Eui Choi*, Marie... to toxic levels of zinc. Zn exposure resulted in toxicity signs in...

331

Pressure Behaviour of the UV and Green Emission Bands in ZnO...  

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

Pressure Behaviour of the UV and Green Emission Bands in ZnO Micro-rods. Pressure Behaviour of the UV and Green Emission Bands in ZnO Micro-rods. Abstract: The pressure behavior of...

332

Graphene sheets decorated with ZnO nanoparticles as anode materials for lithium ion batteries  

Science Journals Connector (OSTI)

ZnO/graphene composites were synthesized using a facile solution- ... 4 nm were densely and homogeneously deposited on graphene sheets. As the anode material for the lithium ion batteries, the ZnO/graphene compos...

Ling-Li Xu; Shao-Wei Bian; Kang-Lin Song

2014-09-01T23:59:59.000Z

333

E-Print Network 3.0 - al pb zn Sample Search Results  

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

et al., 1993; Dejonghe, 1998), resulting in elevated concentrations of Zn, Pb... by atomic absorption spectroscopy (AAS) for Zn, Pb, Mn, Fe, Ca, Mg, K and Al, and by...

334

Electrodeposition of ZnO Nanorods in the Presence of Metal Ions...  

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

of the hexagonal ZnO rods to be larger than in defect-free single-crystalline ZnO. SIMS measurements indicate impurity incorporation and doping in the bulk of the nanorods....

335

Predictive GIS model for potential mapping of Cu, Pb, Zn mineralization  

Science Journals Connector (OSTI)

The geologic features indicative of Cu, Pb, Zn mineral deposits in a area are fractures (structure), and host rock sediments. Datasets used include Cu, Pb, Zn deposit points record, geological data, remote sensin...

Tarik B. Benomar Ph. D.; Bian Fuling

2006-06-01T23:59:59.000Z

336

Structural, optical and photocatalytic properties of ZnO thin films and  

E-Print Network (OSTI)

emitting diodes, gas sensors and transparent conducting thin films for solar cells. In this work, Zn an electronic furnace. Fig. 1. Grain size (black) and RMS variations (blue) of 1-6 layered ZnO films vs

337

Fluorescent Dye Encapsulated ZnO Particles with Cell-specific...  

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

Dye Encapsulated ZnO Particles with Cell-specific Toxicity for Potential use in Biomedical Applications. Fluorescent Dye Encapsulated ZnO Particles with Cell-specific Toxicity...

338

Effect of alkali-metal doping on photoluminescence of CdS films  

Science Journals Connector (OSTI)

It is established that doping of CdS polycrystalline films with alkaline metals (Li,... Cd 2? ...cation vacancies, which are nonradiative recombination centers ...

V. G. Klyuev; T. L. Maiorova

2007-05-01T23:59:59.000Z

339

Microsoft Word - Zn-DTPA Insert_2 Pages.doc  

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

zinc trisodium injection contains the sodium salt of zinc diethylenetriaminepentaacetate. Pentetate zinc zinc trisodium injection contains the sodium salt of zinc diethylenetriaminepentaacetate. Pentetate zinc trisodium is also known as trisodium zinc diethylenetriaminepentaacetate and is commonly referred to as Zn- DTPA. It has a molecular formula of Na3ZnC14H18N3O10 and a molecular weight of 522.7 Daltons. It is represented by the following structural formula: Zn-DTPA is supplied as a clear, colorless, hyperosmolar (1260 mOsmol/kg) solution in a colorless ampoule containing 5 mL. The ampoule contents are sterile, non-pyrogenic and suitable for intravenous administration. Each mL of solution contains the equivalent of 200 mg pentetate zinc trisodium (obtained from 150.51 mg pentetic acid, 31.14 mg zinc oxide and NaOH) and water for injection, USP. The pH of the solution is adjusted

340

Dehydrogenation of Ethanol Over Cu/ZnO Catalysts Prepared from Various Coprecipitated Precursors  

Science Journals Connector (OSTI)

For the title reaction, Cu/ZnO catalysts prepared from aurichalcite were more active than those prepared from...2

Shin-ichiro Fujita; Nobuhiro Iwasa; Hiroaki Tani…

Note: This page contains sample records for the topic "rg zn cd" 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

Structural recovery of ion implanted ZnO nanowires G. Perillat-Merceroz,1, 2, a)  

E-Print Network (OSTI)

applications, ZnO nanowires are studied for making light- emitting diodes (LEDs) because of the advantages

Boyer, Edmond

342

Heavy Quasiparticles in the Ferromagnetic Superconductor ZrZn2  

Science Journals Connector (OSTI)

We report a study of the de Haas–van Alphen effect in the normal state of the ferromagnetic superconductor ZrZn2. Our results are generally consistent with a linear muffin-tin orbital band structure which predicts four exchange-split Fermi surface sheets. Quasiparticle effective masses are enhanced by a factor of 4.9 implying a strong coupling to magnetic excitations or phonons. ZrZn2 is unique among metallic ferromagnets in that it has a very large density of states in the ferromagnetic phase.

S. J. C. Yates; G. Santi; S. M. Hayden; P. J. Meeson; S. B. Dugdale

2003-02-06T23:59:59.000Z

343

Influence of Zn(II) on the Adsorption of Arsenate onto Ferrihydrite  

Science Journals Connector (OSTI)

The bands were assigned to the stretching of hydroxyl groups of the solid phase similar to IR data available for some zinc hydroxide carbonate minerals such as rosasite ((Cu,Zn)2(CO3)(OH)2), hydrozincite (Zn5(CO3)(OH)2), or aurichalcite ((Zn,Cu)5(CO3)2(OH)6). ...

Ivan Carabante; Mattias Grahn; Allan Holmgren; Jurate Kumpiene; Jonas Hedlund

2012-11-21T23:59:59.000Z

344

Corrosion of, and cellular responses to MgZnCa bulk metallic glasses Xuenan Gu a  

E-Print Network (OSTI)

Corrosion of, and cellular responses to Mg­Zn­Ca bulk metallic glasses Xuenan Gu a , Yufeng Zheng a: Magnesium alloy Bulk metallic glass Mechanical property Corrosion Cytotoxicity a b s t r a c t Mg­Zn­Ca bulk, mechanical testing, corrosion and cytotoxicity tests. It was found that the Mg66Zn30Ca4 sample presents

Zheng, Yufeng

345

Low temperature growth of ZnTe by synchroton radiation using metalorganic sources  

Science Journals Connector (OSTI)

The use of synchrotron radiation to convert diethylzinc and diethyltelluride molecules into ZnTe has been employed for ZnTe growth. The formation of ZnTe epitaxial layer on (100) oriented GaAs substrate at room temperature is experimentally demonstrated. It is shown by x?ray photoelectron spectroscopy that no carbon is included in the film. ?

Makoto Ikejiri; Toshihiro Ogata; Hiroshi Ogawa; Mitsuhiro Nishio; Akira Yoshida

1994-01-01T23:59:59.000Z

346

Process Development for High Voc CdTe Solar Cells  

SciTech Connect

This is a cumulative and final report for Phases I, II and III of this NREL funded project (subcontract # XXL-5-44205-10). The main research activities of this project focused on the open-circuit voltage of the CdTe thin film solar cells. Although, thin film CdTe continues to be one of the leading materials for large-scale cost-effective production of photovoltaics, the efficiency of the CdTe solar cells have been stagnant for the last few years. This report describes and summarizes the results for this 3-year research project.

Ferekides, C. S.; Morel, D. L.

2011-05-01T23:59:59.000Z

347

Cd-based II-VI semiconductor nanostructures produced by buffer-layer-assisted growth: Structural evolution and photoluminescence  

E-Print Network (OSTI)

, we discuss the assembly of nanostructures of CdS, CdSe, and CdTe using buffer- layer-assisted growth energies for diffusion for CdS, CdSe, and CdTe can be attributed to differences in London dispersion and branched7 core-shell structures. Improvements in the functionality of these structures have included doping

Weaver, John H.

348

Study of stability of ZnO nanoparticles and growth mechanisms of colloidal ZnO nanorods  

E-Print Network (OSTI)

that the intraparticle diffusion is different from normal Ostwald ripening because it occurs at lower monomer concentration and by monomer migration from small to larger ones. 19 2.6 Selectively binding of surface ligands It is also reported that changes...O concentration in the precursor solution at 60 ?C or higher. As for the mechanisms for the growth of ZnO nanorods, ?Ostwald ripening? and ?oriented attachment? were proposed to explain the formation of ZnO nanorods [30]. In here, ?oriented attachment...

Lee, Kwang Jik

2006-10-30T23:59:59.000Z

349

Study of the intermediate layer at the n{sup +}-CdS/p-CdTe interface  

SciTech Connect

The effect of production conditions and subsequent stimulation by ultrasonic irradiation on the formation of a solid solution at the n-CdS/p-CdTe interface in solar cells has been investigated. The phase composition of the solid-solution transient layer was investigated by a nondestructive photoelectric method (measurement of the spectral distribution of photosensitivity in the gate and photodiode modes). It is shown that the phase composition and thickness of the intermediate CdTe{sub 1-x}S{sub x} layer depend strongly on the heterostructure formation conditions.

Muzafarova, S. A., E-mail: samusu@rambler.ru; Aitbaev, B. U.; Mirsagatov, Sh. A. [Academy of Sciences of Republic Uzbekistan, Physicotechnical Institute, NPO Fizika solntsa (Uzbekistan); Durshimbetov, K. [Karakalpak State University (Uzbekistan); Zhanabergenov, Zh. [Karakalpak State Pedagogical Institute (Uzbekistan)

2008-12-15T23:59:59.000Z

350

Atomic Absorption Method Guide Zn in Copper Alloys  

E-Print Network (OSTI)

Atomic Absorption Method Guide Zn in Copper Alloys Principle The sample is digested in nitric/hydrochloric acid, and zinc is determined by flame atomic absorption spectrometry using an air-acetylene flame · Copper Alloys · Zinc · Flame · Atomic Absorption Method Guide: 40158 #12;©2008 Thermo Fisher Scientific

Wells, Mathew G. - Department of Physical and Environmental Sciences, University of Toronto

351

Luminescence in Mn-doped CdS nanocrystals  

Science Journals Connector (OSTI)

We have synthesized Mn-doped CdS nanocrystals (NCs) with size ranging from ... nm. Photoluminescence (PL) spectra of the doped NCs differ from that of the undoped...d-d...transitions. Electron paramagnetic resona...

Angshuman Nag; Sameer Sapra; Subhra Sen Gupta…

2008-06-01T23:59:59.000Z

352

Compensation of flare-induced CD changes EUVL  

DOE Patents (OSTI)

A method for compensating for flare-induced critical dimensions (CD) changes in photolithography. Changes in the flare level results in undesirable CD changes. The method when used in extreme ultraviolet (EUV) lithography essentially eliminates the unwanted CD changes. The method is based on the recognition that the intrinsic level of flare for an EUV camera (the flare level for an isolated sub-resolution opaque dot in a bright field mask) is essentially constant over the image field. The method involves calculating the flare and its variation over the area of a patterned mask that will be imaged and then using mask biasing to largely eliminate the CD variations that the flare and its variations would otherwise cause. This method would be difficult to apply to optical or DUV lithography since the intrinsic flare for those lithographies is not constant over the image field.

Bjorkholm, John E. (Pleasanton, CA); Stearns, Daniel G. (Los Altos, CA); Gullikson, Eric M. (Oakland, CA); Tichenor, Daniel A. (Castro Valley, CA); Hector, Scott D. (Oakland, CA)

2004-11-09T23:59:59.000Z

353

The UNEP project CD4CDM CDM PDD Guidebook  

E-Print Network (OSTI)

The UNEP project CD4CDM CDM PDD Guidebook: Navigating the Pitfalls Second edition #12;CDM PDD on Energy, Climate and Sustainable Development DTU -Risø Roskilde, Denmark Graphic design and production... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... 10 The CDM Project Development

354

Selective Area Epitaxy of CdTe on Nanopatterned Substrates.  

E-Print Network (OSTI)

?? HgCdTe/Si devices can potentially be significantly improved by the use of nanopatterned substrate structures on Si to control point and extended crystal defects. This… (more)

Fahey, Stephen

2013-01-01T23:59:59.000Z

355

Selective Area Epitaxy of CdTe on Nanopatterned Substrates.  

E-Print Network (OSTI)

??HgCdTe/Si devices can potentially be significantly improved by the use of nanopatterned substrate structures on Si to control point and extended crystal defects. This thesis… (more)

Fahey, Stephen D.

2012-01-01T23:59:59.000Z

356

Critical Decision 2 (CD-2) Approval Template | Department of...  

Office of Environmental Management (EM)

ExampleCD-2Template02-14-12.docx More Documents & Publications Example BCP Template Proposed Data Elements for PARS II Web Application Glossary of Screen Labels for PARS II V...

357

Scintillating bolometers based on ZnMoO$_4$ and Zn$^{100}$MoO$_4$ crystals to search for 0$\  

E-Print Network (OSTI)

The technology of scintillating bolometers based on zinc molybdate (ZnMoO$_4$) crystals is under development within the LUMINEU project to search for 0$\

Poda, D V; Arnaud, Q; Augier, C; Benoît, A; Bergé, L; Boiko, R S; Bergmann, T; Blümer, J; Broniatowski, A; Brudanin, V; Camus, P; Cazes, A; Censier, B; Chapellier, M; Charlieux, F; Chernyak, D M; Coron, N; Coulter, P; Cox, G A; Danevich, F A; de Boissière, T; Decourt, R; De Jesus, M; Devoyon, L; Drillien, A -A; Dumoulin, L; Eitel, K; Enss, C; Filosofov, D; Fleischmann, A; Fourches, N; Gascon, J; Gastaldo, L; Gerbier, G; Giuliani, A; Gros, M; Hehn, L; Henry, S; Hervé, S; Heuermann, G; Humbert, V; Ivanov, I M; Juillard, A; Kéfélian, C; Kleifges, M; Kluck, H; Kobychev, V V; Koskas, F; Kozlov, V; Kraus, H; Kudryavtsev, V A; Sueur, H Le; Loidl, M; Magnier, P; Makarov, E P; Mancuso, M; de Marcillac, P; Marnieros, S; Marrache-Kikuchi, C; Menshikov, A; Nasonov, S G; Navick, X-F; Nones, C; Olivieri, E; Pari, P; Paul, B; Penichot, Y; Pessina, G; Piro, M C; Plantevin, O; Redon, T; Robinson, M; Rodrigues, M; Rozov, S; Sanglard, V; Schmidt, B; Shlegel, V N; Siebenborn, B; Strazzer, O; Tcherniakhovski, D; Tenconi, M; Torres, L; Tretyak, V I; Vagneron, L; Vasiliev, Ya V; Velazquez, M; Viraphong, O; Walker, R J; Weber, M; Yakushev, E; Zhang, X; Zhdankov, V N

2015-01-01T23:59:59.000Z

358

Quantum confinement effects in Gd-doped CdS nanoparticles prepared by chemical precipitation technique  

Science Journals Connector (OSTI)

CdS and Gd-doped CdS nanoparticles have been synthesized by chemical precipitation ... The X-ray diffraction patterns show that the CdS and Gd-doped CdS nanoparticles exhibit hexagonal structure. The high resolu...

M. Thambidurai; N. Muthukumarasamy…

2013-11-01T23:59:59.000Z

359

Re-dispersible Li+ and Eu3+ co-doped CdS nanoparticles: Luminescence studies  

Science Journals Connector (OSTI)

Re-dispersible CdS, 5 at.% Eu3+-doped CdS, 2 at.% Li+ and 5 at.% Eu3+ co-doped CdS nanoparticles in organic solvent are prepared by ... at a low temperature of 170°C. CdS nanoparticles have spherical shape with a...

N. S. Gajbhiye; Raghumani Singh Ningthoujam; Asar Ahmed; D. K. Panda…

2008-02-01T23:59:59.000Z

360

Paul Sellin, Radiation Imaging Group The role of defects on CdTe detector performance  

E-Print Network (OSTI)

Paul Sellin, Radiation Imaging Group The role of defects on CdTe detector performance P.J. Sellin1-destructive material characterisation techniques have been applied to CdTe wafers grown by the Travelling Heater Method Imaging Group PL mapping of whole CdTe wafers PL ( =819 nm) scan for two CdTe wafers, (left: wafer L700

Sellin, Paul

Note: This page contains sample records for the topic "rg zn cd" 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

Inelastic neutron scattering from single crystal Zn under high pressure  

Science Journals Connector (OSTI)

Inelastic neutron-scattering experiments have been performed for single crystals of Zn under pressures up to 8.8 GPa at 300 K. The phonon modes q/qmax=?=0.075 and ?=0.10 were measured in the transverse acoustic branch ?3, where q=0 corresponds with the elastic constant C44. The phonon energy showed a substantial hardening with increasing pressure. The experimental data below 6.8 GPa for ?=0.075 yield a constant Grüneisen mode ?i=-ln?i/lnV of 2.25 in good agreement with a previous calculation [H. Ledbetter, Phys. Status Solidi B 181, 81 (1994)]. Above 6.8 GPa, there is a very rapid increase of ?i which is indicative of the presence of a giant Kohn anomaly. This rapid divergence at high pressure indicates that a phonon softening may occur at pressures higher than 8.8 GPa caused by the collapse of the giant Kohn anomaly via an electronic topological transition (ETT). In an earlier Mössbauer Zn study at 4 K [W. Potzel et al., Phys. Rev. Lett. 74, 1139 (1994)], a drastic drop of the Lamb-Mössbauer factor was observed at 6.6 GPa, which was interpreted as being due to phonon softening, indicating this ETT had occurred. This paper also compares the compressibility data for single crystal Zn and Zn powder using neutron scattering. The results were found to be similar to an earlier x-ray Zn powder experiment [O. Schulte et al., High Pressure Res. 6, 169 (1991)]. © 1996 The American Physical Society.

J. G. Morgan; R. B. Von Dreele; P. Wochner; S. M. Shapiro

1996-07-01T23:59:59.000Z

362

A simple photolytic reactor employing Ag-doped ZnO nanowires for water purification  

Science Journals Connector (OSTI)

Abstract Well-aligned native zinc oxide (ZnO) and silver-doped ZnO (Ag-ZnO) films were deposited on borosilicate glass via a simple, low-cost, low-temperature, scalable hydrothermal process. The as-synthesized ZnO and Ag-ZnO films were characterized by X-ray diffraction; scanning electron microscopy, UV–visible spectroscopy, and Fourier transform infrared spectroscopy. A simple photolytic reactor was fabricated and later used to find the optimum experimental conditions for photocatalytic performance. The photodegradation of methyl orange in water was investigated using as-prepared ZnO and Ag-ZnO nanowires, and was compared to P25 (a commercial photocatalyst) in both visible and UV radiations. The P25 and Ag-ZnO showed a similar photodegradation performance under UV light, but Ag-ZnO demonstrated superior photocatalytic activity under visible irradiation. The optimized doping of Ag in Ag-ZnO enhanced photocatalytic activity in a simple reactor design and indicated potential applicability of Ag-ZnO for large-scale purification of water under solar irradiation.

Innocent Udom; Yangyang Zhang; Manoj K. Ram; Elias K. Stefanakos; Aloysius F. Hepp; Radwan Elzein; Rudy Schlaf; D. Yogi Goswami

2014-01-01T23:59:59.000Z

363

Facile synthesis of graphene/ZnO nanocomposites by low temperature hydrothermal method  

SciTech Connect

Highlights: ? Graphene/ZnO nanocomposites were prepared by low temperature hydrothermal method. ? Rhodamine-B degraded by using graphene/ZnO nanocomposites. ? ZnO anchored well on the surface of graphene. -- Abstract: Graphene/ZnO nanocomposites have been synthesized using hydrothermal method at two different temperatures 80 and 90 °C. The structure, morphology and optical properties of as synthesized nanocomposites were analyzed through X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy, transmission electron microscopy (TEM) and UV–vis absorbance spectroscopy. The XRD pattern confirmed the formation of graphene decorated by hexagonal ZnO with high crystallinity. FESEM image revealed that the sheet like graphene decorated with ZnO in homogeneously. Decoration of quasi-spherical ZnO nanoparticles on graphene sheet was confirmed by TEM. The characteristic absorbance peaks of graphene/ZnO nanocomposites were observed in UV visible spectra. The photocatalytic degradation experiment was performed against rhodamine-B dye and showed good catalytic activity for both samples. The graphene/ZnO nanocomposites showed higher catalytic activity then ZnO nanoparticles. The GZN-90 sample showed more catalytic activity than GZN-80 due to higher density of ZnO in graphene surface generates large number of photo-induced electron.

Saravanakumar, Balasubramaniam; Mohan, Rajneesh [Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of)] [Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of); Kim, Sang-Jae, E-mail: kimsangj@jejunu.ac.kr [Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of)] [Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of)

2013-02-15T23:59:59.000Z

364

Structural Studies of Al:ZnO Powders and Thin Films | Stanford Synchrotron  

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

Structural Studies of Al:ZnO Powders and Thin Films Structural Studies of Al:ZnO Powders and Thin Films Monday, June 18, 2012 - 2:00pm SSRL Main Conference Room 137-322 Dr. Bridget Ingham, Associate Investigator, MacDiarmid Institute for Advanced Materials & Nanotechnology Al-doped ZnO (Al:ZnO) is a promising transparent conducting oxide. We have used complementary synchrotron and laboratory techniques to study the incorporation of Al within the ZnO lattice, and measure its effect on the crystallinity of thin films prepared by sol-gel techniques, with an aim to understand how these properties affect the film conductivity. I will present recent results from Al:ZnO powders and thin films, prepared with varying Al concentrations and calcination temperatures. Solid state 27Al NMR and ex situ X-ray diffraction (XRD) were performed on Al:ZnO

365

Structural and optical properties of MgO doped ZnO  

SciTech Connect

Samples of ZnO, Zn{sub 0.5}Mg{sub 0.5}O and MgO were prepared by co-precipitation method. X-ray diffraction (XRD) pattern infers that the sample of ZnO is in single-phase wurtzite structure (hexagonal phase, space group P6{sub 3}mc), MgO crystallizes in cubic Fd3m space group and Zn{sub 0.5}Mg{sub 0.5}O represents mixed nature of ZnO and MgO lattices. Similar features were observed from Raman spectroscopy. The energy band gaps estimated from UV-Vis spectroscopy are found to be 4.21 and 3.42 eV for ZnO and Zn{sub 0.5}Mg{sub 0.5}O samples respectively.

Verma, Kavita; Shukla, S.; Varshney, Dinesh, E-mail: vdinesh33@rediffmail.com [School of Physics, Vigyan Bhavan, Devi Ahilya University, Khandwa Road Campus, Indore-452001 (India); Varshney, M. [Department of Physics, M. B. Khalsa College, Raj Mohallah, Indore-452002 (India); Asthana, A. [Department of Chemistry, Govt. B. V. T. PG Autonomous College, Durg- 491001 (India)

2014-04-24T23:59:59.000Z

366

Optical transitions and multiphonon Raman scattering of Cu doped ZnO and MgZnO ceramics  

E-Print Network (OSTI)

of the Cu ion, Cu doped ZnO is a p-type semiconductor.13 Additionally, ferromagnetic behavior due were then dried and cold pressed at up to 3 tons for approximately 30 min, followed by annealing at a temperature of 10 K using a Bomem DA8 Fourier transform IR spectrometer and InSb detector. The micro

McCluskey, Matthew

367

Structural properties and spatial ordering in multilayered ZnMgTe/ZnSe type-II quantum dot structures  

SciTech Connect

We report the structural properties and spatial ordering of multilayer ZnMgTe quantum dots (QDs) embedded in ZnSe, where sub-monolayer quantities of Mg were introduced periodically during growth in order to reduce the valence band offset of ZnTe QDs. The periodicity, period dispersion, individual layer thickness, and the composition of the multilayer structures were determined by comparing the experimental high resolution x-ray diffraction (HRXRD) spectra to simulated ones for the allowed (004) and quasi-forbidden (002) reflections in combination with transmission electron microscopy (TEM) results. Secondary ion mass spectroscopy (SIMS) profiles confirmed the incorporation of Mg inside the QD layers, and the HRXRD analysis revealed that there is approximately 32% Mg in the ZnMgTe QDs. The presence of Mg contributes to higher scattering intensity of the HRXRD, leading to the observation of higher order superlattice peaks in both the (004) and (002) reflections. The distribution of scattered intensity in the reciprocal space map (RSM) shows that the diffuse scattered intensity is elongated along the q{sub x} axis, indicating a vertical correlation of the dots, which is found to be less defined for the sample with larger periodicity. The diffuse scattered intensity is also found to be weakly correlated along the q{sub z} direction indicating a weak lateral correlation of the dots.

Manna, U.; Noyan, I. C.; Neumark, G. F. [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States); Zhang, Q.; Moug, R. [Department of Chemistry, City College of CUNY, New York, New York 10031 (United States); Salakhutdinov, I. F. [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States); Department of Physics, Queens College of CUNY, Flushing, New York 11367 (United States); Dunn, K. A.; Novak, S. W. [College of Nanoscale Science and Engineering, University at Albany-SUNY, Albany, New York 12203 (United States); Tamargo, M. C. [Department of Chemistry, City College of CUNY, New York, New York 10031 (United States); Graduate Center of CUNY, New York, New York 10016 (United States); Kuskovsky, I. L. [Department of Physics, Queens College of CUNY, Flushing, New York 11367 (United States); Graduate Center of CUNY, New York, New York 10016 (United States)

2012-02-01T23:59:59.000Z

368

Five-coordinate Cd in the crystal structure of triploidite-type Cd2(AsO4)(OH)  

Science Journals Connector (OSTI)

This paper reports on hydrothermal synthesis and crystal structure refinement of dicadmium arsenate hydroxide, Cd2(AsO4)(OH), obtained at 220 °C and autogenous pressure. Its crystal structure is monoclinic, space...

Tamara Ðor?evi?; Uwe Kolitsch

2013-04-01T23:59:59.000Z

369

Comparative Evaluation of Chemical and Environmental Online and CD-ROM Databases  

Science Journals Connector (OSTI)

This paper presents a comparative evaluation of datasources of online databases and databases on CD-ROM (called CD-ROMs in this paper) in the field of environmental chemicals. ... Analyzing the five object sets for CD-ROMs (ICD?5CD), the situation is as follows:? The CD-ROM versions of large online databases, e.g., BIOSIS (BIOSIS Previews CD-ROM), RTECS (Registry of Toxic Effects of Chemical Substances), and TOX (Toxicology Literature Online CD-ROM), are maximum objects in our Hasse diagrams. ... Striking is the fact that the German CD-ROMs like GEF (Gefahrgut CD-ROM), GIF (Giftliste, krebserregende, gesundheitsschädliche und reizende Stoffe), and SIG (Siemens Gefahrstoff-Datenbank CD-ROM) are in low ranking positions. ...

Kristina Voigt; Johann Gasteiger; Rainer Brüggemann

1999-11-23T23:59:59.000Z

370

Cu–ZnO and Cu–ZnO/Al2O3 Catalysts for the Reverse Water-Gas Shift Reaction. The Effect of the Cu/Zn Ratio on Precursor Characteristics and on the Activity of the Derived Catalysts  

Science Journals Connector (OSTI)

Comparison is made between Cu–ZnO and alumina-supported Cu–ZnO as catalysts for the reverse water-gas shift (RWGS) reaction. For both types of catalyst the Cu/Zn ratio has been varied between Cu-rich and Zn-ri...

Frank S. Stone; David Waller

2003-04-01T23:59:59.000Z

371

Coulomb interaction of acceptors in Cd{sub 1?x}Mn{sub x}Te/CdTe quantum dot  

SciTech Connect

The investigation on the effect of confining potential like isotropic harmonic oscillator type potential on the binding and the Coulomb interaction energy of the double acceptors in the presence of magnetic field in a Cd{sub 1?x}Mn{sub x}Te/CdTe Spherical Quantum Dot has been made for the Mn ion composition x=0.3 and compared with the results obtained from the square well type potential using variational procedure in the effective mass approximation.

Kalpana, P.; Nithiananthi, P., E-mail: kjkumar-gri@rediffmail.com; Jayakumar, K., E-mail: kjkumar-gri@rediffmail.com [Department of Physics, Gandhigram Rural University, Gandhigram-624302, TamilNadu (India); Reuben, A. Merwyn Jasper D. [Department of Physics, School of Engineering, Saveetha University, Thandalam, Chennai- 600104, TamilNadu (India)

2014-04-24T23:59:59.000Z

372

Study of molybdenum oxide as a back contact buffer for thin film n-CdS/p-CdTe solar cells.  

E-Print Network (OSTI)

??Back contact improvement is one of the most crucial issues for the realization of highly efficient n-CdS/p-CdTe solar cells. Conventional methods for making a sufficiently… (more)

Lin, Hao

2013-01-01T23:59:59.000Z

373

Electrical characteristics of the CdTe-n-CdHgTe structure fabricated in a single molecular-beam epitaxy process  

SciTech Connect

An extraordinary shape of the capacitance-voltage characteristics of CdTe-CdHgTe structures has been detected; these characteristics include a specific 'hump' in the inversion region, the height of which increased severalfold under illumination. Additional measurements using an optical probe, measurements of current-voltage characteristics, and an analysis of the energy-band diagram of the structure showed the following. CdTe, in contrast to CdHgTe, is a p-type semiconductor with an acceptor concentration of 1 x 10{sup 16} cm{sup -3}; there is a hole inversion layer in CdHgTe at the boundary with CdTe, which causes the 'hump'; and the barrier height for holes at the CdTe-Cd{sub 0.43}Hg{sub 0.57}Te interface was determined as 0.13 eV.

Mashukov, Yu. P., E-mail: dr_mashukov@mail.ru; Mikhailov, N. N.; Vasilyev, V. V. [Russian Academy of Sciences, Rzhanov Institute of Semiconductor Physics, Siberian Branch (Russian Federation)

2010-09-15T23:59:59.000Z

374

Homeostatic Cytokines Induce CD4 Downregulation in African Green Monkeys Independently of Antigen Exposure To Generate Simian Immunodeficiency Virus-Resistant CD8?? T Cells  

Science Journals Connector (OSTI)

...Cytokines Induce CD4 Downregulation in African Green Monkeys Independently of Antigen Exposure...Health, Bethesda, Maryland, USA African green monkeys (AGMs; genus Chlorocebus) are...avoid immunodeficiency. Adult African green monkeys naturally have low numbers of CD4...

Molly R. Perkins; Judith A. Briant; Nina Calantone; Sonya Whitted; Carol L. Vinton; Nichole R. Klatt; Ilnour Ourmanov; Alexandra M. Ortiz; Vanessa M. Hirsch; Jason M. Brenchley

2014-07-02T23:59:59.000Z

375

Thermal Sintering Improves the Short Circuit Current of Solar Cells Sensitized with CdTe/CdSe Core/Shell Nanocrystals  

Science Journals Connector (OSTI)

Aqueous colloidal solution of CdTe/CdSe core/shell nanocrystals used in this sensitized solar cells were synthesized using a wet chemical method. These colloidal nanocrystals were capped with Mercapto-Succinic...

Padmashri Patil

2014-01-01T23:59:59.000Z

376

Semiconductor Nanocrystals as Luminescent Down-Shifting Layers To Enhance the Efficiency of Thin-Film CdTe/CdS and Crystalline Si Solar Cells  

Science Journals Connector (OSTI)

A commonly used thin-film CdTe/CdS solar cell is transparent to photons with energies below the bandgap energy, and an additional portion of sunlight is lost because of absorption of high-energy UV photons in the CdS buffer layer. ... Wu, S.; Dou, J.; Zhang, J.; Zhang, S.A Simple and Economical One-Pot Method to Synthesize High-Quality Water Soluble CdTe QDs J. Mater. ...

Sergii Kalytchuk; Shuchi Gupta; Olga Zhovtiuk; Aleksandar Vaneski; Stephen V. Kershaw; Huiying Fu; Zhiyong Fan; Eric C. H. Kwok; Chiou-Fu Wang; Wey Yang Teoh; Andrey L. Rogach

2014-01-17T23:59:59.000Z

377

LA REVUE DE L'EPI N 85 DES CD-ROM POUR L'COLE PRIMAIRE DES CD-ROM POUR L'COLE PRIMAIRE  

E-Print Network (OSTI)

65 LA REVUE DE L'EPI N° 85 DES CD-ROM POUR L'�COLE PRIMAIRE DES CD-ROM POUR L'�COLE PRIMAIRE Jacques B�ZIAT EDUCAMPA COMMENT ENRICHIR SA BO�TE � OUTILS SCOLAIRE ET P�DAGOGIQUE L'EPI diffuse le CD-Rom EDUCAMPA 1 (voir bon de commande page 236 de cette revue). Avec ce CD-Rom, Jean Marc Campaner nous livre

Paris-Sud XI, Université de

378

The influence of Zn vacancy on thermal conductivity of {beta}-Zn{sub 4}Sb{sub 3}: A molecular dynamics study  

SciTech Connect

The influence of Zn vacancy on lattice thermal conductivity of {beta}-Zn{sub 4}Sb{sub 3} is studied by non-equilibrium molecular dynamics approach. The lattice thermal conductivity of single-crystal bulk {beta}-Zn{sub 4}Sb{sub 3} decreases rapidly when there is Zn vacancy, and then when the vacancy grows, the lattice thermal conductivity decreases further but rather slowly, which suggests a scaling law of k{sub v}{approx}n{sub v}{sup -{alpha}} of Zn atom vacancy (n{sub v}) to lattice thermal conductivity (k{sub vac}). This phenomenon is attributed to the fact that the existence of vacancy scattering can significantly decrease the mean free path. When the Zn atom vacant proportion reaches 10%, that is the vacancy model of {beta}-Zn{sub 4}Sb{sub 3}, the lattice thermal conductivity is 1.32 W/mk along the x-axis and 1.62 W/mk along the z-axis, respectively, which drops by {approx}90% that of its full occupancy model. Therefore, our calculations show that the 10% Zn atom vacancy in {beta}-Zn{sub 4}Sb{sub 3} is the main reason for its exceptionally low thermal conductivity, and the interstitial Zn atoms have little effect on the thermal conductivity of single-crystal {beta}-Zn{sub 4}Sb{sub 3}. - Graphical abstract: The bulk thermal conductivity (k{sub pure}) is 11.88 W/mk along the x-axis and 20.00 W/mk the z-axis. When it is 10% vacancy, namely the vacancy model of {beta}-Zn{sub 4}Sb{sub 3}, the thermal conductivity of {beta}-Zn{sub 4}Sb{sub 3} is 1.32 W/mk along the x-axis and 1.62 W/mk along the z-axis, respectively, which reduces by {approx}90% that of its full occupancy model. Our calculations show that the 10% Zn atom vacancy in the crystal structure of {beta}-Zn{sub 4}Sb{sub 3} is the main reason for its exceptionally low thermal conductivity, and the interstitial Zn atoms have little effect on the thermal conductivity of single-crystal {beta}-Zn{sub 4}Sb{sub 3}. Highlights: Black-Right-Pointing-Pointer The lattice stability of {beta}-Zn{sub 4}Sb{sub 3} decreases remarkably with the growing vacancy. Black-Right-Pointing-Pointer 10% Zn vacancy leads to its low thermal conductivity and structural instability. Black-Right-Pointing-Pointer Interstitial Zn atoms in {beta}-Zn{sub 4}Sb{sub 3} mainly stabilize the crystal structure.

Zhai, Pengcheng [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China) [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China); State Key Laboratory of Advanced Technology of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China); Li, Guodong; Wen, Pengfei [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China)] [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China); Li, Yao, E-mail: liyao06@126.com [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China)] [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China); Zhang, Qingjie; Liu, Lisheng [State Key Laboratory of Advanced Technology of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China)] [State Key Laboratory of Advanced Technology of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China)

2012-09-15T23:59:59.000Z

379

Onset of current selfquenching in a metalCdSLaS cold cathode in the presence of inelastic scattering in the CdS layer  

E-Print Network (OSTI)

# a wide band gap semiconductor #un­ doped CdS# sandwiched between a metallic contact that sup­ plies scattering in the CdS layer Yamini Modukuru and Marc Cahay a) Department of Electrical Engineering­charge effects in the cathode to anode gap region of a recently proposed metal/CdS/LaS cold cathode and its

Cahay, Marc

380

X-ray standing wave study of CdTe/MnTe/CdTe(001) heterointerfaces J. C. Boulliard,a)  

E-Print Network (OSTI)

features of the first stages of growth of ultrathin pseudomorphic MnTe 001 strained layers buried in CdTe on CdTe 001 substrates. Experiments with 004 and 113 reflecting planes show evidence of the presenceTe layers grown in CdTe 001 by molecular beam epitaxy. The results will be compared to high resolution

Boyer, Edmond

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381

Effect of irradiation with gamma-ray photons on the charge-transport mechanism in n-CdS/p-CdTe heterostructures  

SciTech Connect

Effect of irradiation with {gamma}-ray photons on the mechanism of charge transport in an n-CdS/p-CdTe heterostructure is considered. It is shown that the forward current-voltage characteristic of an n-CdS/p-CdTe heterostructure before and after irradiation is described by two exponential dependences: I = I{sub 01}exp(qV/C{sub 01}kT) and I = I{sub 02}exp(qV/C{sub 02}kT). It is found that, in the first portion of the current-voltage characteristic, the current is limited by thermoelectronic emission while, in the second portion, the current is limited by recombination of nonequilibrium charge carriers in the electrically neutral portion of a CdTe{sub 1-x}S{sub x} alloy at the n-CdS/p-CdTe heteroboundary. Anomalous dose dependences of parameters of the n-CdS/p-CdTe heterosystem are attributed to a variation in the degree of compensation of local centers at the CdS-CdTe{sub 1-x}S{sub x} interface and in the CdTe{sub 1-x}S{sub x} layers in relation to the dose of irradiation with {gamma}-ray photons.

Muzafarova, S. A., E-mail: samusu@rambler.ru; Mirsagatov, S. A., E-mail: mirsagatov@rambler.ru; Dzhamalov, F. N. [Academy of Sciences of the Republic of Uzbekistan, Physicotechnical Institute, Researh-and-Production Association Sun Physics (Uzbekistan)

2009-02-15T23:59:59.000Z

382

THE RELATIONSHIP OF CdS/CdTe CELL BAND PROFILES TO J-V CHARACTERISTICS AND BIAS-DEPENDENT QUANTUM EFFICIENCY  

E-Print Network (OSTI)

-over, and, in some cases, long J-V and capacitance transient effects. CdTe is highly compensated containing by charge in the bulk CdTe within the absorber. PATHWAYS TO INCREASED EFFICIENCY There are several general to realize in practice. One pathway is by increasing the net negative charge in the CdTe by "p-type doping

Sites, James R.

383

Authors: Aycock, J. & Barker, K. EICAR 2004 Conference CD-rom: Best Paper Proceedings EICAR 2004 Conference CD-rom Editor: Urs E. Gattiker  

E-Print Network (OSTI)

Authors: Aycock, J. & Barker, K. EICAR 2004 Conference CD-rom: Best Paper Proceedings EICAR 2004 Conference CD-rom Editor: Urs E. Gattiker ISBN: 87-987271-6-8 Copyright © 2004 by EICAR e.V. 1 Creating Computer Virus Laboratory (Case Study). In U.E. Gattiker (Ed.), EICAR 2004 Conference CD-rom: Best Paper

Aycock, John

384

XAFS Debye-Waller factors for Zn metalloproteins  

SciTech Connect

An accurate and practical method for the calculation and use of thermal x-ray absorption fine structure (XAFS) Debye-Waller factors (DWFs) in active sites of metalloproteins is presented. These factors are calculated on model clusters within the local density functional approximation with nonlocal corrections. The DWFs are mapped out and parametrized as a function of the first shell distance and an angle (where applicable), for all significant single and multiple scattering paths, as well as the sample temperature. This approach is applied to the biologically essential but spectroscopically silent Zn{sup +2} active sites composed of histidines, cysteines, and carboxylate ligands in homogeneous and heterogeneous environments. Detailed analysis of the relative scattering paths for Zn metalloproteins using projected vibrational density of states further explain why these paths are not detectable by XAFS for first shell metal-ligand distances above a 'cutoff' value.

Dimakis, Nicholas; Bunker, Grant [Illinois Institute of Technology, 3300 South Federal Street, Chicago, Illinois 60616-3793 (United States)

2004-11-15T23:59:59.000Z

385

Experimental evidence of V{sub O}?Zn{sub i} complex to be intrinsic donor in bulk ZnO  

SciTech Connect

Theoretical evidence of V{sub O}?Zn{sub i} to be a native donor in bulk ZnO has been under debate. To resolve the issue, we annealed several pieces of as grown zinc rich n-type ZnO thin film having N{sub D} ? 3.26 × 10{sup 17} cm{sup ?3} grown by molecular beam epitaxy on Si (001) substrate in oxygen environment at 500°C – 800°C, keeping a step of 100°C for one hour, each. Room temperature Hall measurements demonstrated that free donor concentration decreased exponentially and Arrhenius plot yielded activation energy to be 1.2±0.02 eV. This value is in an agreement with the theoretically reported activation energy of V{sub O}?Zn{sub i} donor complex in ZnO.

Asghar, M.; Mahmood, K. [Department of Physics, The Islamia University of Bahawalpur 63100 (Pakistan); Hasan, M.-A; Tsu, R.; Ferguson, I. T. [Department of Electrical and Computer Engineering, University of North Carolina Charlotte, NC 28223 (United States)

2014-02-21T23:59:59.000Z

386

Cell fusion mediated by interaction of a hybrid CD4.CD8 molecule with the human immunodeficiency virus type 1 envelope glycoprotein does occur after a long lag time.  

Science Journals Connector (OSTI)

...01 cells. CD4.CD8 molecule does not interfere in the fusion...Coexpression of CD4.CD8 with CD4 does not interfere dominantly with...human immunodeficiency virus does not require the cytoplasmic...J. C. Jamieson (ed.), Handbook of physiology. Oxford University...

H Golding; R Blumenthal; J Manischewitz; D R Littman; D S Dimitrov

1993-11-01T23:59:59.000Z

387

Metal contacts on ZnSe and GaN  

SciTech Connect

Recently, considerable interest has been focused on the development of blue light emitting materials and devices. The focus has been on GaN and ZnSe, direct band gap semiconductors with bands gaps of 3.4 and 2.6 eV, respectively. To have efficient, reliable devices it is necessary to have thermally and electrically stable Ohmic contacts. This requires knowledge of the metal-semiconductor reaction behavior. To date few studies have investigated this behavior. Much information has accumulated over the years on the behavior of metals on Si and GaAs. This thesis provides new knowledge for the more ionic wide band gap semiconductors. The initial reaction temperatures, first phases formed, and phase stability of Pt, Pd, and Ni on both semiconductors were investigated. The reactions of these metals on ZnSe and GaN are discussed in detail and correlated with predicted behavior. In addition, comparisons are made between these highly ionic semiconductors and Si and GaAs. The trends observed here should also be applicable to other II-VI and III-Nitride semiconductor systems, while the information on phase formation and stability should be useful in the development of contacts for ZnSe and GaN devices.

Duxstad, K.J. [Univ. of California, Berkeley, CA (United States). Materials Science and Mineral Engineering; [Lawrence Berkeley National Lab., CA (United States). Materials Sciences Div.

1997-05-01T23:59:59.000Z

388

Analysis of the Junction Properties of CdS/CdTe Devices in Substrate and Superstrate Configurations  

SciTech Connect

The best efficiency of CdS/CdTe devices fabricated in the substrate configuration reported to date is about 8%, which is about half the 17.3% reported for the conventional superstrate configuration. The performance of substrate devices is affected by lower open-circuit voltage (Voc), about 700 mV, and low fill factor (FF), which indicates that these devices are primarily limited by non-ideal junction properties and possibly by the ohmic contact to CdTe. In our study of the junction properties of superstrate devices, we show that lower-Voc devices (< 720 mV) with SnO2/CdTe and CdS/CdTe structures are true heterojunction devices. High charged defect density at the heterointerfaces is present in the depletion region and contributes to the dark current density, thereby reducing Voc. On the other hand, for higher-performance devices with Voc > 800 mV, the junction is between an n-type, Te-rich CdSTe alloy with a bandgap of 1.45 eV and p-type CdTe with a bandgap of 1.5 eV. Because the crystal structure of both the Te-rich alloy and the CdTe is cubic zinc blende, and the lattice mismatch between the two is minimal, the device in this case can be considered a quasi-homojunction. These higher-Voc devices are therefore affected less by the high charged defect density at the hetero-interface, which lies outside of the depletion region. We present analysis of the junction properties of our recent and improved substrate-configuration devices with Voc well in excess of 800 mV, FF approaching 60%, and efficiencies around 10%. We also compare devices fabricated in both the substrate and superstrate configurations and with comparable Voc in the range of 700 to more than 800 mV. Photoluminescence (PL) and temperature-dependent PL, current density-voltage and quantum efficiency analysis, and modulated reflectance measurements are used to study device properties.

Dhere, R. G.; Duenow, J. N.; DeHart, C. M.; Li, J. V.; Kuciauskas, D.; Young, M. R.; Alberi, K.; Mascarenhas, A.; Gessert, T. A.

2011-01-01T23:59:59.000Z

389

NETL: Gasification - Request Gasification Systems Information on a CD  

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

Gasification Systems Gasification Systems Request Gasification Systems Information on a CD Please fill in the form below to receive the CDs of your choice. * Denotes required field Requestor Contact Information Requested By (Agency/Company): First Name: * Last Name: * Address: * PO Box: City: * State: * Zip: * Country: Email: * Phone: CD Request Select CD(s):* Gasification Systems Project Portfolio Gasification Technologies Training Course Special Instructions: Submit Request Reset Contacts Program Contact: Jenny Tennant (304) 285-4830 jenny.tennant@netl.doe.gov Close Contacts Disclaimer Disclaimer of Liability: This system is made available by an agency of the United States Government. Neither the United States Government, the Department of Energy, the National Energy Technology Laboratory, nor any of

390

C.D. Howe Institute | Department of Energy  

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

C.D. Howe Institute C.D. Howe Institute C.D. Howe Institute October 21, 2008 - 4:14pm Addthis Remarks as Prepared for Acting Deputy Secretary Kupfer Thank you very much. It's a pleasure to be here. I want to congratulate the C. D. Howe Institute on its 50th anniversary-a half century of thoughtful public policy debates on the issues of greatest interest and concern to the Canadian people. In our increasingly interconnected world-the dialogue you foster also helps to inform the larger global debate on these issues. It is my hope that we are able to spark such a dialogue with our event here today, and I very much look forward to your thoughts and questions. As I look around this room, it is very clear that there is a lot of wisdom and experience here. I will start off with some comments on US energy policy.

391

C.D. Howe Institute | Department of Energy  

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

C.D. Howe Institute C.D. Howe Institute C.D. Howe Institute October 21, 2008 - 4:14pm Addthis Remarks as Prepared for Acting Deputy Secretary Kupfer Thank you very much. It's a pleasure to be here. I want to congratulate the C. D. Howe Institute on its 50th anniversary-a half century of thoughtful public policy debates on the issues of greatest interest and concern to the Canadian people. In our increasingly interconnected world-the dialogue you foster also helps to inform the larger global debate on these issues. It is my hope that we are able to spark such a dialogue with our event here today, and I very much look forward to your thoughts and questions. As I look around this room, it is very clear that there is a lot of wisdom and experience here. I will start off with some comments on US energy policy.

392

Photoelectron spectroscopic study of band alignment of polymer/ZnO photovoltaic device structure  

SciTech Connect

Using x-ray photoelectron spectroscopy, we investigated the band alignment of a Ag/poly(3-hexylthiophene-2,5-diyl) (P3HT)/ZnO photovoltaic structure. At the P3HT/ZnO interface, a band bending of P3HT and a short surface depletion layer of ZnO were observed. The offset between the highest occupied molecular orbital of P3HT and the conduction band minimum of ZnO at the interface contributed to the open circuit voltage (Voc) was estimated to be approximately 1.5 {+-} 0.1 eV, which was bigger than that of the electrically measured effective Voc of P3HT/ZnO photovoltaic devices, meaning that the P3HT/ZnO photovoltaic structure has the potential to provide improved photovoltaic properties.

Nagata, T.; Chikyow, T. [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan)] [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan); Oh, S.; Wakayama, Y. [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan) [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan); Department of Chemistry and Biochemistry, Faculty of Engineering, Kyushu University, 1-1 Namiki, Tsukuba 305-0044 (Japan); Yamashita, Y. [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan) [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan); NIMS Beamline Station at SPring-8, National Institute for Materials Science, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Yoshikawa, H.; Kobayashi, K. [NIMS Beamline Station at SPring-8, National Institute for Materials Science, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan)] [NIMS Beamline Station at SPring-8, National Institute for Materials Science, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Ikeno, N. [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan) [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan); Nanotechnology Laboratory, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571 (Japan)

2013-01-28T23:59:59.000Z

393

As-doped p -type ZnO produced by an evaporation?sputtering process  

Science Journals Connector (OSTI)

Strongly p -type ZnO is produced by the following sequence of steps: (1) evaporation of Zn 3 As 2 on a fused-quartz substrate at 350 ° C ; and (2) sputtering of ZnO with substrate held at 450 ° C . The electrical characteristics include: resistivity of 0.4 ? cm a mobility of 4 cm 2 ? V s and a hole concentration of about 4 × 10 18 cm ? 3 . This resistivity is among the best (lowest) ever reported for p -type ZnO. Secondary-ion mass spectroscopic analysis gives an average As concentration about 5 × 10 19 cm ? 3 and a simple one-band fit of the temperature-dependent mobility curve yields an acceptor concentration of about 9 × 10 19 cm ? 3 . This is strong evidence that the p -type dopant involves As although it is not clear whether the acceptor is simply As O or the recently suggested As Zn ? 2 V Zn .

D. C. Look; G. M. Renlund; R. H. Burgener II; J. R. Sizelove

2004-01-01T23:59:59.000Z

394

Study of interatomic potential and thermal structural properties of ?-Zn{sub 4}Sb{sub 3}  

SciTech Connect

Highlights: ? The multi-body interatomic potentials of various models of ?-Zn{sub 4}Sb{sub 3} have been developed to describe atomic interactions. ? The radial distribution function shows that the 10% vacancy of Zn site leads to the disorder of ?-Zn{sub 4}Sb{sub 3}. ? The 10% vacancy of Zn site is the main cause of the exceptional low thermal conductivity. -- Abstract: Previous experimental research shows that the disordered Zn atoms in ?-Zn{sub 4}Sb{sub 3} may have an important influence on its exceptionally low thermal conductivity and easily occurred phase transition. So the present work aims to study the influence of disordered Zn atoms on thermodynamics properties of ?-Zn{sub 4}Sb{sub 3} by using molecular dynamics (MD) method. Firstly, based on first principles calculation and experimental results, the interatomic potentials of ?-Zn{sub 4}Sb{sub 3} and MD analysis method are established, and the feasibility is verified. Then, the influence of disordered Zn atoms on thermal conductivity of ?-Zn{sub 4}Sb{sub 3} is studied in detail. The simulation results indicate that the 10% vacant Zn atoms is the main reason for the exceptionally low thermal conductivity of ?-Zn{sub 4}Sb{sub 3}, and it seems that the interstitial Zn atoms have little effect on its thermal conductivity.

Li, Guodong [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China)] [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China); Li, Yao, E-mail: liyao06@126.com [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China)] [Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070 (China); Liu, Lisheng; Zhang, Qingjie; Zhai, Pengcheng [State Key Laboratory of Advanced Technology of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China)] [State Key Laboratory of Advanced Technology of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China)

2012-11-15T23:59:59.000Z

395

What causes high resistivity in CdTe  

SciTech Connect

Shallow donors are often introduced into semiconductor materials to enhance n-type conductivity. However, they can sometimes also be used to obtain compensation between donors and acceptors, resulting in high resistivity in semiconductors. For example, CdTe can be made semi-insulating by shallow donor doping. This is routinely done to obtain high resistivity in CdTe-based radiation detectors. However, it is widely believed that the shallow donor alone cannot be responsible for the high resistivity in CdTe. This is based on the argument that it is practically impossible to control the shallow donor doping level so precisely that the free carrier density can be brought below the desired value suitable for radiation detection applications. Therefore, a deep native donor is usually assumed to exist in CdTe and pin the Fermi level near midgap. In this paper, we present our calculations on carrier statistics and energetics of shallow donors and native defects in CdTe and illustrate different donor-specific mechanisms for achieving carrier compensation. Our results show that the shallow donor can be used to reliably obtain high resistivity in CdTe without requiring additional deep donors. Since radiation detection applications require both high resistivity and good carrier transport, one should generally use shallow donors and shallow acceptors for carrier compensation and avoid deep centers that are effective carrier traps. This study highlights how the interaction between impurities and native defects intricately affects the Fermi level pinning in the semiconductor band gap and the associated resistivity of the material.

Biswas, Koushik [ORNL; Du, Mao-Hua [ORNL

2012-01-01T23:59:59.000Z

396

Comparative Studies on Temperature Dependent I-V Characteristics of Al/(p)CdTe and Ni/(n)CdS Schottky Junctions and Their PV Effect  

SciTech Connect

Temperature dependent I-V characteristics of vacuum evaporated Al/(p)CdTe and Ni/(n)CdS Schottky junctions and their photovoltaic effects have been studied and compared. Different junction parameters such as ideality factors, barrier heights, Richardson's constant, short-circuit current density, fill factor, PV efficiency etc. were determined from their I-V characteristics. These parameters were found to change significantly on variation of temperature. The structures showed the change of PV effect. Efficiency found were 2.84% for Al/(p)CdTe and 4.44% for Ni hydro/(n)CdS. Polycrystalline nature, and continuous and ordered structure with bigger grain sizes of the CdS film shows more PV conversion efficiency in making Ni/(n)CdS junction as compare to Al/(p)CdTe junction. However these values were found to vary with doping concentration, and in hydrogen treated samples in both cases.

Wary, G. [Department of Physics, Cotton College, Guwahati-781001 (India); Kachari, T.; Rahman, A. [Department of Physics, Gauhati University, Guwahati-781014 (India)

2010-06-29T23:59:59.000Z

397

Methanol synthesis from CO2 over Cu/ZnO catalysts prepared from various coprecipitated precursors  

Science Journals Connector (OSTI)

Various precursors of Cu/ZnO catalysts were prepared by coprecipitation methods. By varying the conditions of coprecipitation, precursors having different structures (aurichalcite, malachite, hydrozincite, or their mixture) were obtained at given Cu/Zn ratios, ranging from 30/70 to 70/30. In a wide range of the Cu/Zn ratios, the catalysts derived from the precursors containing aurichalcite exhibited high performance in the methanol synthesis from CO2.

Shin-ichiro Fujita; Yoshinori Kanamori; Agus Muhamad Satriyo; Nobutsune Takezawa

1998-01-01T23:59:59.000Z

398

Magnetism in undoped ZnS studied from density functional theory  

SciTech Connect

The magnetic property induced by the native defects in ZnS bulk, thin film, and quantum dots are investigated comprehensively based on density functional theory within the generalized gradient approximation + Hubbard U (GGA?+?U) approach. We find the origin of magnetism is closely related to the introduction of hole into ZnS systems. The relative localization of S-3p orbitals is another key to resulting in unpaired p-electron, due to Hund's rule. For almost all the ZnS systems under study, the magnetic moment arises from the S-dangling bonds generated by Zn vacancies. The charge-neutral Zn vacancy, Zn vacancy in 1? charge sate, and S vacancy in the 1+ charge sate produce a local magnetic moment of 2.0, 1.0, and 1.0??{sub B}, respectively. The Zn vacancy in the neutral and 1? charge sates are the important cause for the ferromagnetism in ZnS bulk, with a Curie temperature (T{sub C}) above room temperature. For ZnS thin film with clean (111) surfaces, the spins on each surface are ferromagnetically coupled but antiferromagnetically coupled between two surfaces, which is attributable to the internal electric field between the two polar (111) surfaces of the thin film. Only surface Zn vacancies can yield local magnetic moment for ZnS thin film and quantum dot, which is ascribed to the surface effect. Interactions between magnetic moments on S-3p states induced by hole-doping are responsible for the ferromagnetism observed experimentally in various ZnS samples.

Xiao, Wen-Zhi, E-mail: xiaowenzhi@hnu.edu.cn, E-mail: llwang@hun.edu.cn; Rong, Qing-Yan; Xiao, Gang [Department of Physics and Mathematics, Hunan Institute of Engineering, Xiangtan 411104 (China); Wang, Ling-ling, E-mail: xiaowenzhi@hnu.edu.cn, E-mail: llwang@hun.edu.cn [School of Physics and Microelectronics and Key Lab for Micro-Nano Physics and Technology of Hunan Province, Hunan University, Changsha 410082 (China); Meng, Bo [College of Physics and Electronic Engineering, Caili University, Kaili 556011 (China)

2014-06-07T23:59:59.000Z

399

Supporting information for: Na-doped p-type ZnO , Faxian Xiu2  

E-Print Network (OSTI)

S1 Supporting information for: Na-doped p-type ZnO microwires Wei Liu1* , Faxian Xiu2 , Ke Sun1 flow was switched to argon followed by cooling to room temperature. After the growth, high-density Zn distribution of the Na Doped ZnO microwire 1.3 EDX line scans spectra #12;S3 Figure S3 a) a typical TEM image

Yang, Zheng

400

Zinc Stannate (Zn2SnO4) Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Atomic-Scale Imaging of Cation Ordering in Inverse Spinel Zn2SnO4 Nanowires ... Atomic-Scale Imaging of Cation Ordering in Inverse Spinel Zn2SnO4 Nanowires ... By using high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) coupled with density functional theory (DFT) calculations, we demonstrate the atomic-level imaging of cation ordering in inverse spinel Zn2SnO4 nanowires. ...

Bing Tan; Elizabeth Toman; Yanguang Li; Yiying Wu

2007-03-20T23:59:59.000Z

Note: This page contains sample records for the topic "rg zn cd" 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.


401

Crystal growth behaviour in Au-ZnO nanocomposite under different annealing environments and photoswitchability  

SciTech Connect

The growth of gold nanoparticles and ZnO nanorods in atom beam co-sputtered Au-ZnO nanocomposite (NC) system by annealing at two different ambient conditions is demonstrated in this work. Annealing in a furnace at 600 Degree-Sign C (air environment) confirmed the formation of ZnO nanorods surrounded with Au nanoparticles. In-situ annealing inside a transmission electron microscope (TEM) led to the formation of gold nanocrystals with different polygonal shapes. TEM micrographs were obtained in real time at intermediate temperatures of 300 Degree-Sign C, 420 Degree-Sign C, and 600 Degree-Sign C under vacuum. The growth mechanisms of Au nanocrystals and ZnO nanorods are discussed in the framework of Au-Zn eutectic and Zn-melting temperatures in vacuum and air, respectively. Current-voltage responses of Au-ZnO NC nanorods in dark as well as under light illumination have been investigated and photoswitching in Au-ZnO NC system is reported. The photoswitching has been discussed in terms of Au-ZnO band-diagram.

Mishra, Y. K.; Adelung, R. [Functional Nanomaterials, Institute for Materials Science, University of Kiel, Kaiserstrasse 2, 24143 Kiel (Germany); Chakravadhanula, V. S. K.; Hrkac, V.; Kienle, L. [Synthesis and Real Structure, Institute for Materials Science, University of Kiel, Kaiserstrasse 2, 24143 Kiel (Germany); Jebril, S. [Multicomponent Materials, Institute for Materials Science, University of Kiel, Kaiserstrasse 2, 24143 Kiel (Germany); Agarwal, D. C.; Avasthi, D. K. [Inter University Accelerator Centre, Post Box 10502, New Delhi 110067 (India); Mohapatra, S. [University School of Basic and Applied Sciences, GGS Indraprastha University, Dwaraka, New Delhi 110075 (India)

2012-09-15T23:59:59.000Z

402

E-Print Network 3.0 - av zn cu Sample Search Results  

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

to promote efficiency of CuZnOAl2O3 catalysts, producing hydrogen with low carbon monoxide levels 13 Source: Mukasyan, Alexander - Department of Chemical and Biomolecular...

403

E-Print Network 3.0 - active site zn Sample Search Results  

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

carbonate and other Zn-containing compounds1 Graldine Sarret, Emiko Harada, Yong-Eui ... Source: Ecole Polytechnique, Centre de mathmatiques Collection: Mathematics 29...

404

Diluted ferromagnetic semiconductor Li(Zn,Mn)P with decoupled charge and spin doping  

Science Journals Connector (OSTI)

We report the discovery of a diluted magnetic semiconductor, Li(Zn,Mn)P, in which charge and spin are introduced independently via lithium off-stoichiometry and the isovalent substitution of Mn2+ for Zn2+, respectively. Isostructural to (Ga,Mn)As, Li(Zn,Mn)P was found to be a p-type ferromagnetic semiconductor with excess lithium providing charge doping. First-principles calculations indicate that excess Li is favored to partially occupy the Zn site, leading to hole doping. Ferromagnetism with Curie temperature up to 34 K is achieved while the system still shows semiconducting transport behavior.

Z. Deng; K. Zhao; B. Gu; W. Han; J. L. Zhu; X. C. Wang; X. Li; Q. Q. Liu; R. C. Yu; T. Goko; B. Frandsen; L. Liu; Jinsong Zhang; Yayu Wang; F. L. Ning; S. Maekawa; Y. J. Uemura; C. Q. Jin

2013-08-21T23:59:59.000Z

405

The Role of ZnO Nanoparticle Electrostatic Properties in Cancer Cell Cytotoxicity.  

E-Print Network (OSTI)

??ZnO nanoparticles have previously been shown to exhibit selective cytotoxicity against certain types of cancerous cells, suggesting their potential use in biomedical applications. In this… (more)

Louka, Panagiota

2012-01-01T23:59:59.000Z

406

Transport and magnetotransport study of Mg doped ZnO thin films  

SciTech Connect

We report negative magnetoresistance in pulsed laser deposited single phase ZnO and Mg{sub 0.268}Zn{sub 0.732}O films and attribute it to the presence of oxygen interstitials (O{sub i}) and zinc interstitials (Zn{sub i}) as observed in the X-ray photoelectron spectra of the films. An interesting feature of reduction of negative magnetoresistance at low temperatures and large fields in Mg{sub 0.268}Zn{sub 0.732}O film is observed and is explained by taking into account the localized scattering.

Agrawal, Arpana; Dar, Tanveer A., E-mail: tanveerphysics@gmail.com; Sen, Pratima [Laser Bhawan, School of Physics, Devi Ahilya University, Indore 452 017 (India); Phase, Deodatta M. [UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore 452017 (India)

2014-04-14T23:59:59.000Z

407

Optical and morphological properties of graphene sheets decorated with ZnO nanowires via polyol enhancement  

SciTech Connect

Graphene-ZnO nanocomposites have proven to be very useful materials for photovoltaic and sensor applications. Here, we report a facile, one-step in situ polymerization method for synthesis of graphene sheets randomly decorated with zinc oxide nanowires using ethylene glycol as solvent. We have used hydrothermal treatment for growth of ZnO nanowires. UV-visible spectra peak shifting around 288nm and 307 nm shows the presence of ZnO on graphene structure. Photoluminiscence spectra (PL) in 400nm-500nm region exhibits the luminescence quenching effect. Scanning electron microscopy (SEM) image confirms the growth of ZnO nanowires on graphene sheets.

Sharma, Vinay, E-mail: winn201@gmail.com; Rajaura, Rajveer Singh, E-mail: winn201@gmail.com [Centre for Converging Technologies, University of Rajasthan, Jaipur - 302004 (India); Sharma, Preetam K.; Srivastava, Subodh; Vijay, Y. K. [Department of Physics, Thin Film and Membrane Science Lab., University of Rajasthan, Jaipur - 302004 (India); Sharma, S. S. [Department of Physics, Govt. Women Engineering College, Ajmer- 305002 (India)

2014-04-24T23:59:59.000Z

408

Visualization of Peroxynitrite-Induced Changes of Labile Zn[superscript 2+] in the Endoplasmic Reticulum with Benzoresorufin-based Fluorescent Probes  

E-Print Network (OSTI)

Zn[superscript 2+] plays essential roles in biology, and the homeostasis of Zn[superscript 2+] is tightly regulated in all cells. Subcellular distribution and trafficking of labile Zn[superscript 2+], and its inter-relation ...

Lin, Wei

409

Impact of high-oxygen thermal annealing on the structural, optical and electrical properties of ZnO discs made from 20-nm ZnO nanoparticles  

Science Journals Connector (OSTI)

20-nm nanoparticles of zinc oxide (ZnO) were used to make high-density ZnO discs by uniaxial pressing at 4 ton/cm2 pressure and sintering at 1200 °C for 1 hour. High-oxygen thermal annealing performed on the ZnO discs was found to have a profound impact especially enhanced grain growth even at a low annealing temperature of only 400 °C. Moreover we observed a unique secondary growth of ZnO nanoparticles and growth of multilayer grains that have not been reported elsewhere. The strong solid state reaction during annealing was probably attributed to the high surface area of the 20-nm ZnO nanoparticles that promoted strong surface reaction even at low annealing temperatures. The ZnO discs have been found to contain a very high concentration of structural defects (oxygen vacancies and zinc/oxygen interstitials) that was indicated by the dominant and broad visible photoluminescence (PL) emission in the green band with peaks at (519 - 533) nm and it was found that this visible emission was greatly increased after annealing treatment especially at 800 °C. Annealing treatment also was found to improved the grain crystallinity as illustrated by the lowering of intrinsic compressive stress based on the XRD lattice constant and full-wave half-maximum (FWHM) data. The electrical properties of the ZnO discs were also greatly influenced by the annealing treatment especially a big drop in the breakdown voltage from 362 V (as-grown sample) to 170 V (800 °C sample). The resistivity also experienced a dramatic drop from 267 k?.cm (as-grown sample) to 74.6 k?.cm (800 °C sample). High-oxygen thermal annealing can be employed as a new technique in controlling the breakdown voltage of ZnO discs made from ZnO nanoparticles with improved structural properties.

Rabab Khalid Sendi; Shahrom Mahmud

2012-01-01T23:59:59.000Z

410

High Efficiency CdTe/CdS Thin Film solar Cells by a Process Suitable for Large Scale Production. N. Romeo, A. Bosio, A. Romeo, M. Bianucci, L. Bonci, C. Lenti  

E-Print Network (OSTI)

High Efficiency CdTe/CdS Thin Film solar Cells by a Process Suitable for Large Scale Production. N-mail:Nicola.Romeo@fis.unipr.it ABSTRACT: It has been demonstrated that CdTe/CdS thin film solar cells can exhibit an efficiency around 16 Film. 1 INTRODUCTION CdTe/CdS thin film solar cells have a good possibility to be produced on large

Romeo, Alessandro

411

CdTe Photovoltaics: Real and Perceived EHS Risks  

E-Print Network (OSTI)

result in Cd (gaseous) emissions of 0.5g/GWh, equivalent to that of a coal fired power plant " Comment to the California Power Authority, 2002 #12;Brookhaven Science Associates U.S. Department is supported by: · US Bureau of Mines reports · Rhine Basin study (the largest application of Systems Analysis

Ohta, Shigemi

412

The UNEP project CD4CDM Guidebook to  

E-Print Network (OSTI)

and procedures and about approaches for financial appraisal of CDM projects are among the reasons for this lackThe UNEP project CD4CDM Guidebook to Financing CDM Projects #12;Guidebook to Financing CDM Projects on this information. Independent legal and financial advice should always be sought when undertaking a CDM project

413

Results of a Si/CdTe Compton Telescope  

E-Print Network (OSTI)

We have been developing a semiconductor Compton telescope to explore the universe in the energy band from several tens of keV to a few MeV. We use a Si strip and CdTe pixel detector for the Compton telescope to cover an energy range from 60 keV. For energies above several hundred keV, the higher efficiency of CdTe semiconductor in comparison with Si is expected to play an important role as an absorber and a scatterer. In order to demonstrate the spectral and imaging capability of a CdTe-based Compton Telescope, we have developed a Compton telescope consisting of a stack of CdTe pixel detectors as a small scale prototype. With this prototype, we succeeded in reconstructing images and spectra by solving the Compton equation from 122 keV to 662 keV. The energy resolution (FWHM) of reconstructed spectra is 7.3 keV at 511 keV and 3.1 keV at 122 keV, respectively. The angular resolution obtained at 511 keV is measured to be 12.2 degree (FWHM).

Kousuke Oonuki; Takaaki Tanaka; Shin Watanabe; Shin'ichiro Takeda; Kazuhiro Nakazawa; Takefumi Mitani; Tadayuki Takahashi; Hiroyasu Tajima; Yasushi Fukazawa; Masaharu Nomachi

2005-09-21T23:59:59.000Z

414

Ion-beam-induced damage formation in CdTe  

SciTech Connect

Damage formation in <111>- and <112>-oriented CdTe single crystals irradiated at room temperature and 15 K with 270 keV Ar or 730 keV Sb ions was investigated in situ using Rutherford backscattering spectroscopy (RBS) in channeling configuration. Defect profiles were calculated from the RBS spectra using the computer code DICADA and additional energy-dependent RBS measurements were performed to identify the type of defects. At both temperatures no formation of a buried amorphous layer was detected even after prolonged irradiation with several 10{sup 16} ions/cm{sup 2}. The fact that CdTe is not rendered amorphous even at 15 K suggests that the high resistance to amorphization is caused by the high ionicity of CdTe rather than thermal effects. The calculated defect profiles show the formation of a broad defect distribution that extends much deeper into the crystal than the projected range of the implanted ions at both temperatures. The post-range defects in CdTe thus do not seem to be of thermal origin either, but are instead believed to result from migration driven by the electronic energy loss.

Rischau, C. W.; Schnohr, C. S.; Wendler, E.; Wesch, W. [Institut fuer Festkoerperphysik, Friedrich-Schiller-Universitaet Jena, Max-Wien-Platz 1, D-07743 Jena (Germany)

2011-06-01T23:59:59.000Z

415

Insegnamenti Insegnamento cfu CdL SSD sem docente  

E-Print Network (OSTI)

25/09/2013 Insegnamenti 1/2 Insegnamento cfu CdL SSD sem docente Laboratorio di Fisica 12 FM FIS/01 annuale Bordi Laboratorio di Fisica 12 FM FIS/01 annuale Betti Laboratorio di Fisica 12 FM FIS/01 annuale Tramontano Biofisica Teorica 6 FM FIS/02 I anno, I sem DeMartino Interazioni Elettrodeboli 6 FM FIS/02 I anno

Roma "La Sapienza", Università di

416

Microfluidics for biological analysis: Triumphs and hurdles of CD platforms  

E-Print Network (OSTI)

Microfluidics for biological analysis: Triumphs and hurdles of CD platforms JONATHAN SIEGRIST1 , R on microfluidic technologies has become extensive, particularly in regards to the develop- ment of sample. Centrifugal microfluidic platforms based on the compact-disc format are discussed, along with the advantages

Joshi, Yogesh Moreshwar

417

The International Station Meteorological Climate Summary CD-ROM  

Science Journals Connector (OSTI)

The International Station Meteorological Climate Summary (ISMCS)is a Compact Disc-Read Only Memory(CD-ROM)containing climatic records for 640 primary weather-observation sites and over 5800 secondary sites around the world. When used with a ...

Terry Jarrett

1992-10-01T23:59:59.000Z

418

T-685: Cisco Warranty CD May Load Malware From a Remote Site...  

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

5: Cisco Warranty CD May Load Malware From a Remote Site T-685: Cisco Warranty CD May Load Malware From a Remote Site August 5, 2011 - 3:26pm Addthis PROBLEM: A vulnerability was...

419

PRECONTACT SURFACE CHEMISTRY EFFECTS ON CdWCdTe SOLAR CELL PERFORMANCE AND STABILITY  

E-Print Network (OSTI)

PRECONTACT SURFACE CHEMISTRY EFFECTS ON CdWCdTe SOLAR CELL PERFORMANCE AND STABILITY Dave Albin (CBD) and close spaced sublimation (CSS) respectively. CdTe growth is followed by either solution

Sites, James R.

420

E-Print Network 3.0 - affect cd1 expression Sample Search Results  

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

Concentrations and Precipitates Cadmium Sulfide... strain, Cd-1, from reducing salt marsh sediments. The strain grows in up to 15 mM CdCl2 under a wide... . In comparison...

Note: This page contains sample records for the topic "rg zn cd" 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.


421

Synthesis, structural and photocatalytic studies of Mn-doped CdS nanoparticles  

Science Journals Connector (OSTI)

Mn-doped CdS nanoparticles (Cd1?x Mn x S; where x...= 0.00–0.10) were synthesized by a chemical precipitation method. The synthesized products were characterized ...

Ruby Chauhan; Ashavani Kumar; Ram Pal Chaudhary

2013-02-01T23:59:59.000Z

422

Solvothermally synthesized europium-doped CdS nanorods: applications as phosphors  

Science Journals Connector (OSTI)

To exploit the photoluminescent behavior of CdS at nanoscale with different doping concentration of europium—a rare earth element, we report the synthesis of Eu-doped CdS nanorods by using low temperature solvoth...

Sunil Kumar; Zinki Jindal; Nitu Kumari…

2011-10-01T23:59:59.000Z

423

Electrical and optical properties of polycrystalline Ag-doped CdS thin films  

Science Journals Connector (OSTI)

CdS and CdS:Ag thin films were prepared using the spray pyrolysis technique. The prepared films were deposited on glass substrate kept at a temperature of (420±10) °C. The optical and electrical properties hav...

M. A. Khalid; H. A. Jassem

1993-03-01T23:59:59.000Z

424

Ferromagnetism in Gd-doped CdS dilute magnetic semiconducting nanorods  

Science Journals Connector (OSTI)

Cd x Gd1?x S (x...= 0–0.15) nanorods have been synthesized by solvothermal technique. X-ray diffraction study reveals that pure and Gd-doped CdS nanorods exhibits...

Kamaldeep Kaur; Gurmeet Singh Lotey…

2014-01-01T23:59:59.000Z

425

Effect of indium doping and annealing on photoconducting property of wurtzite type CdS  

Science Journals Connector (OSTI)

In this paper we observed the effect of doping and annealing on the dark current and anomalous photoconducting behavior of hexagonal wurtzite CdS, synthesized by solid state reaction method. Undoped CdS sample sh...

Vineet Kumar Singh; Pratima Chauhan; Sheo Kumar Mishra…

2012-06-01T23:59:59.000Z

426

Structural and dielectrical studies on mechano-chemically synthesized indium doped CdS nanopowders  

Science Journals Connector (OSTI)

Incorporation of indium (dopant) into CdS crystals have been successfully achieved by a ... ray diffraction (XRD) analysis of milled In doped CdS compound showed that the major phase of ... good pathway to identi...

B. J. Babu; S. Velumani; A. Kassiba

2011-08-01T23:59:59.000Z

427

Development of high efficieny CdTe thin-film solar cell.  

E-Print Network (OSTI)

??CdTe films were deposited by sputtering technique and were then carried out by CdCl2 treatment. The SEM micrographs show that the grain sizes of the… (more)

Huang, Yein-rein

2011-01-01T23:59:59.000Z

428

Pressure-induced Phase Transition in Thiol-capped CdTe Nanoparticles  

SciTech Connect

Phase transitions for CdTe nanoparticles (NPs) under high pressure up to 37.0 GPa have been studied using fluorescence measurements. The phase transition from cinnarbar to rocksalt phase has been observed in CdTe NPs solution at 5.8 GPa, which is much higher than the phase transition pressure of bulk CdTe (3.8 GPa) and that of CdTe NPs in solid form (0.8 GPa). CdTe NPs solution therefore shows elevated phase transition pressure and enhanced stability against pressure compared with bulk CdTe and CdTe NPs in solid forms. The enhanced stability of CdTe NPs solution has been attributed to possible shape change in the phase transition and/or inhomogeneous strains in nanoparticle solutions.

Wu, F; Zaug, J; Young, C; Zhang, J Z

2006-11-29T23:59:59.000Z

429

Ligand Mediated Surface Reconstruction of Photoluminescent CdTe Quantum Dots.  

E-Print Network (OSTI)

??Enhancement of photoluminescence (PL) is observed for light-shielded dodecylamine-capped colloidal CdTe quantum dots (CdTe/DDA QDs) dispersed in toluene after washing and recapping. The PL quantum… (more)

Onnink, A.J.

2013-01-01T23:59:59.000Z

430

Development of Materials and Structures for p-type Contacts in CdTe Solar Cells.  

E-Print Network (OSTI)

??Solar cells based on CdTe absorbers are attractive due to the optimal direct band gap energy and large absorption coefficient of CdTe, however, their performance… (more)

Ferizovic, Dino

2012-01-01T23:59:59.000Z

431

WAVELENGTH DEPENDENT EFFECTIVE TRAP DENSITY IN CdTe : EVIDENCE FOR THE PRESENCE OF TWO  

E-Print Network (OSTI)

1 WAVELENGTH DEPENDENT EFFECTIVE TRAP DENSITY IN CdTe : EVIDENCE FOR THE PRESENCE OF TWO.1016/S0030-4018(96)00516-0 #12;2 Photorefractive semiconductors like CdTe are characterized by a low

432

E-Print Network 3.0 - antigens cd Sample Search Results  

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

and elimination by CD4+ effector... and antigen-specific CD4+ T cells in the lungs are defective, and that this contributes to persistence... may modulate expression of antigen...

433

HIV-1 Tat protein down regulates interleukin-7 receptor alpha on CD8 T cells .  

E-Print Network (OSTI)

??Expression of the IL-7 receptor alpha-chain (CD127) is decreased on CD8 T-cells in HIV infected patients and recovers in those receiving antiretroviral therapy with sustained… (more)

Faller, Elliott M

2013-01-01T23:59:59.000Z

434

ChemPages Laboratory: Abstract of Special Issue 24 on CD-ROM  

Science Journals Connector (OSTI)

ChemPages Laboratory: Abstract of Special Issue 24 on CD-ROM ... The ChemPages Laboratory CD-ROM uses text, images and video to clearly explain over 30 common laboratory techniques and items of equipment. ...

Joe L. March; John W. Moore; Jerrold J. Jacobsen

2000-03-01T23:59:59.000Z

435

The Nuclear Pool of Tetraspanin CD9 Contributes to Mitotic Processes in Human Breast Carcinoma  

Science Journals Connector (OSTI)

...Mitotic Processes in Human Breast Carcinoma Germana Rappa Toni M. Green Aurelio Lorico * * Corresponding Author: Aurelio Lorico, Cancer...CD9-GFP fusion protein. However, by fluorescence resonance energy transfer (FRET) analysis, no direct binding of CD9 with either...

Germana Rappa; Toni M. Green; and Aurelio Lorico

436

Involvement of nuclear factor {kappa}B in platelet CD40 signaling  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer sCD40L induces TRAF2 association to CD40 and NF-{kappa}B activation in platelets. Black-Right-Pointing-Pointer I{kappa}B{alpha} phosphorylation downstream of CD40L/CD40 signaling is independent of p38 MAPK phosphorylation. Black-Right-Pointing-Pointer I{kappa}B{alpha} is required for sCD40L-induced platelet activation and potentiation of aggregation. -- Abstract: CD40 ligand (CD40L) is a thrombo-inflammatory molecule that predicts cardiovascular events. Platelets constitute the major source of soluble CD40L (sCD40L), which has been shown to potentiate platelet activation and aggregation, in a CD40-dependent manner, via p38 mitogen activated protein kinase (MAPK) and Rac1 signaling. In many cells, the CD40L/CD40 dyad also induces activation of nuclear factor kappa B (NF-{kappa}B). Given that platelets contain NF-{kappa}B, we hypothesized that it may be involved in platelet CD40 signaling and function. In human platelets, sCD40L induces association of CD40 with its adaptor protein the tumor necrosis factor receptor associated factor 2 and triggers phosphorylation of I{kappa}B{alpha}, which are abolished by CD40L blockade. Inhibition of I{kappa}B{alpha} phosphorylation reverses sCD40L-induced I{kappa}B{alpha} phosphorylation without affecting p38 MAPK phosphorylation. On the other hand, inhibition of p38 MAPK phosphorylation has no effect on I{kappa}B{alpha} phosphorylation, indicating a divergence in the signaling pathway originating from CD40 upon its ligation. In functional studies, inhibition of I{kappa}B{alpha} phosphorylation reverses sCD40L-induced platelet activation and potentiation of platelet aggregation in response to a sub-threshold concentration of collagen. This study demonstrates that the sCD40L/CD40 axis triggers NF-{kappa}B activation in platelets. This signaling pathway plays a critical role in platelet activation and aggregation upon sCD40L stimulation and may represent an important target against thrombo-inflammatory disorders.

Hachem, Ahmed [Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, 5000 Belanger, Montreal, Quebec, Canada H1T 1C8 (Canada)] [Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, 5000 Belanger, Montreal, Quebec, Canada H1T 1C8 (Canada); Yacoub, Daniel [Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, 5000 Belanger, Montreal, Quebec, Canada H1T 1C8 (Canada) [Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, 5000 Belanger, Montreal, Quebec, Canada H1T 1C8 (Canada); Centre Hospitalier Universite de Montreal, 264 boul. Rene-Levesque est, Montreal, Quebec, Canada H2X 1P1 (Canada); Zaid, Younes [Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, 5000 Belanger, Montreal, Quebec, Canada H1T 1C8 (Canada)] [Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, 5000 Belanger, Montreal, Quebec, Canada H1T 1C8 (Canada); Mourad, Walid [Universite de Montreal, Department of Medicine, 2900 boul. Edouard-Montpetit, Montreal, Quebec, Canada H3T 1J4 (Canada) [Universite de Montreal, Department of Medicine, 2900 boul. Edouard-Montpetit, Montreal, Quebec, Canada H3T 1J4 (Canada); Centre Hospitalier Universite de Montreal, 264 boul. Rene-Levesque est, Montreal, Quebec, Canada H2X 1P1 (Canada); Merhi, Yahye, E-mail: yahye.merhi@icm-mhi.org [Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, 5000 Belanger, Montreal, Quebec, Canada H1T 1C8 (Canada) [Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, 5000 Belanger, Montreal, Quebec, Canada H1T 1C8 (Canada); Universite de Montreal, Department of Medicine, 2900 boul. Edouard-Montpetit, Montreal, Quebec, Canada H3T 1J4 (Canada)

2012-08-17T23:59:59.000Z

437

Mineral formation from aqueous solution. Part III. The stability of aurichalcite, (Zn,Cu)5(CO3)2(OH)6, and rosasite (Cu,Zn)2(CO3)(OH)2  

Science Journals Connector (OSTI)

The stabilities of rosasite, (Cu, Zn)2 (CO3)(OH)2, and aurichalcite, (Zn, Cu)5(CO3)2(OH)6, have been determined by solution experiments with computer calculations of aqueous species in equilibrium with the solid ...

Alwan K. Alwan; J. H. Thomas; Peter A. Williams

1980-01-01T23:59:59.000Z

438

DISSERTATION Role of the Cu-O Defect in CdTe Solar Cells  

E-Print Network (OSTI)

OF THE CU-O DEFECT COMPLEX IN CDTE SOLAR CELLS Thin-film CdTe is one of the leading materials used the defects present in thin-film CdTe deposited for solar cells. One key defect seen in the thin-film CdDISSERTATION Role of the Cu-O Defect in CdTe Solar Cells Submitted by Caroline R. Corwine

Sites, James R.

439

CD-ROM Spectroscope: A Simple and Inexpensive Tool for Classroom Demonstrations on Chemical Spectroscopy  

Science Journals Connector (OSTI)

CD-ROM Spectroscope: A Simple and Inexpensive Tool for Classroom Demonstrations on Chemical Spectroscopy ... Construction of a handy spectroscope using a compact disk (CD) or a CD-ROM and its application to the observation of emission and absorption spectra are described. ... Thus, the CD-ROM spectroscope is a useful tool in primary and secondary schools to teach what color is and what spectra are. ...

Fumitaka Wakabayashi; Kiyohito Hamada; Kozo Sone

1998-12-01T23:59:59.000Z

440

LA REVUE DE L'EPI N 92 UTILISATION INDIVIDUELLE DU CD-ROM UTILISATION INDIVIDUELLE  

E-Print Network (OSTI)

79 LA REVUE DE L'EPI N° 92 UTILISATION INDIVIDUELLE DU CD-ROM UTILISATION INDIVIDUELLE DU CD-ROM contenu de nos séances en introduisant le CD-ROM, mais pour des raisons techniques, il n'était pas'une médiathèque, avec un choix de CD-ROM en français, j'ai pensé qu'il serait possible d'en profiter pour l

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "rg zn cd" 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.


441

Nanoscale Imaging of Photocurrent and Efficiency in CdTe Solar Cells  

Science Journals Connector (OSTI)

Nanoscale Imaging of Photocurrent and Efficiency in CdTe Solar Cells ... The local collection characteristics of grain interiors and grain boundaries in thin-film CdTe polycrystalline solar cells are investigated using scanning photocurrent microscopy. ... photovoltaics; CdTe; scanning photocurrent microscopy; solar cells; NSOM ...

Marina S. Leite; Maxim Abashin; Henri J. Lezec; Anthony Gianfrancesco; A. Alec Talin; Nikolai B. Zhitenev

2014-10-15T23:59:59.000Z

442

Photothermal Beam Deflection and Photoaction Spectroscopic Study of CdS Photoelectrodes in Polysulfide Electrolyte  

E-Print Network (OSTI)

this study involving four CdS crystals, both pure and doped materials were used, with resistiv- ities varyingPhotothermal Beam Deflection and Photoaction Spectroscopic Study of CdS Photoelectrodes photovoltage, and ac photocurrent spectra for CdS photoelectrochemical cells are pre- sented. The spectra were

Mandelis, Andreas

443

Solar Energy Materials & Solar Cells 91 (2007) 13881391 Bifacial configurations for CdTe solar cells  

E-Print Network (OSTI)

Solar Energy Materials & Solar Cells 91 (2007) 1388­1391 Bifacial configurations for CdTe solar We present a different back contact for CdTe solar cell by the application of only a transparent that acts as a free-Cu stable back contact and at the same time allows to realize bifacial CdTe solar cells

Romeo, Alessandro

444

PHOTOSCANNING OF CdTe DETECTORS FOR INVESTIGATION OF CRYSTAL QUALITY  

E-Print Network (OSTI)

349 PHOTOSCANNING OF CdTe DETECTORS FOR INVESTIGATION OF CRYSTAL QUALITY AND CONTACT BEHAVIOUR P. A. Preliminary results are reported on light scanning of CdTe detectors with a mechanical scanning system using is absorbed in CdTe with an absorption length of appro- ximately 10 gm. The two mirrors were driven

Paris-Sud XI, Université de

445

Optical implementation of entangled multi-spin states in a CdTe quantum well  

E-Print Network (OSTI)

Optical implementation of entangled multi-spin states in a CdTe quantum well J.M. Baoa , A in a CdTe quantum well. Our method, relying on the exchange interaction between optically excited holes; 78.67.De; 42.50.Md Keywords: A. CdTe quantum wells; D. Ultrafast optics; D. Quantum computation; D

Bao, Jiming

446

Structural tuning of color chromaticity through nonradiative energy transfer by interspacing CdTe nanocrystal monolayers  

E-Print Network (OSTI)

Structural tuning of color chromaticity through nonradiative energy transfer by interspacing CdTe transfer in the heterostructure of layer-by-layer spaced CdTe nanocrystal NC solids. We achieved highly demonstrated efficient FRET in LbL assembled bilayers of CdTe NCs. In another structure, alternating layers

Demir, Hilmi Volkan

447

USE OF VARIOUS DEVICE GEOMETRIES TO IMPROVE THE PERFORMANCE OF CdTe DETECTORS (*)  

E-Print Network (OSTI)

343 USE OF VARIOUS DEVICE GEOMETRIES TO IMPROVE THE PERFORMANCE OF CdTe DETECTORS (*) K. ZANIO. - The most direct method of increasing the resolution of CdTe gamma ray and x-ray detectors is to increase of Environmental and Biomedical Research. doped CdTe. Devices do not polarize as those having blocking contacts

Paris-Sud XI, Université de

448

NUMERICAL MODELING OF CIGS AND CdTe SOLAR CELLS: SETTING THE BASELINE  

E-Print Network (OSTI)

NUMERICAL MODELING OF CIGS AND CdTe SOLAR CELLS: SETTING THE BASELINE M. Gloeckler, A. Consequently specific baseline parameters for CIGS and CdTe are proposed. The modeling results important complications that are often found in experimental CIGS and CdTe solar cells. 1. INTRODUCTION

Sites, James R.

449

USE OF CdTe DETECTORS IN BONE MINERAL MEASUREMENTS J. VOGEL, J. ULLMAN  

E-Print Network (OSTI)

375 USE OF CdTe DETECTORS IN BONE MINERAL MEASUREMENTS J. VOGEL, J. ULLMAN Nuclear Medicine. Cet ensemble emploie des détecteurs CdTe mesurant la transmission d'un faisceau collimaté de rayons X periods of prolonged bedrest or weightlessness. The unit employs CdTe detectors to mea- sure

Paris-Sud XI, Université de

450

Nonresonant four-wave mixing in photorefractive CdTe crystals using a picosecond parametric generator  

E-Print Network (OSTI)

Nonresonant four-wave mixing in photorefractive CdTe crystals using a picosecond parametric at nonresonant interaction, thus allowing a study of time-resolved carrier transport in CdTe crystals to be made space-charge SC electric fields have been studied in vanadium or germanium doped semi-insulating CdTe

Boyer, Edmond

451

IMPROVEMENTS IN THE MANUFACTURE OF CdTe GAMMA RAY DETECTORS  

E-Print Network (OSTI)

141 IMPROVEMENTS IN THE MANUFACTURE OF CdTe GAMMA RAY DETECTORS S. BRELANT The Aerospace been made in the quality of chlorine-doped CdTe crystals manufactured by the traveling heater method applications of CdTe gamma ray detectors has been the continuous measurement of ablating materials

Paris-Sud XI, Université de

452

CRYSTAL GROWTH BY SOLVENT TECHNIQUES AND CHARACTERISTIC PROPERTIES OF CdTe  

E-Print Network (OSTI)

117 CRYSTAL GROWTH BY SOLVENT TECHNIQUES AND CHARACTERISTIC PROPERTIES OF CdTe T. TAGUCHI, J and holes are obtained. REVUE DE PHYSIQUE APPLIQUÃ?E TOME 12, FÃ?VRIER 1977, PAGE 117 1. Introduction. - CdTe during donor doping since CdTe has a strong tendency for self compensation However, in spite of a great

Paris-Sud XI, Université de

453

APPLICATIONS OF CdTe. A REVIEW Mobil Tyco Solar Energy Corporation, 16 Hickory Drive  

E-Print Network (OSTI)

APPLICATIONS OF CdTe. A REVIEW F. V. WALD Mobil Tyco Solar Energy Corporation, 16 Hickory Drive sont également données. Abstract. 2014 The review considers the history of CdTe in short form advanced. II. APPLICATIONS OF CADMIUM TELLURIDE AND DEVICES BASED ON THIS MATERIAL. Section II. 1 : CdTe

Paris-Sud XI, Université de

454

CHARACTERIZATION OF CdTe WITH PHOTOELECTRONIC TECHNIQUES A. M. MANCINI and C. MANFREDOTTI  

E-Print Network (OSTI)

255 CHARACTERIZATION OF CdTe WITH PHOTOELECTRONIC TECHNIQUES A. M. MANCINI and C. MANFREDOTTI seront discutés dans le cas où elles sont mises en 0153uvre sur CdTe. Abstract. 2014 Thermally stimulated current (TSC) and space-charge limited current (SCLC) measurements have been performed in CdTe grown

Paris-Sud XI, Université de

455

BIOTELEMETRY BASED ON CdTe-DETECTORS J. BOJSEN, N. ROSSING, O. SOEBERG and S. VADSTRUP  

E-Print Network (OSTI)

radionuclide detectors (CdTe) 2-3 mm3 (developed by C. R. N. Strasbourg) have been tested with special to the skin for surface detection [2, 3]. Among several new semiconductor materials the cadmium telluride (CdTe. - The detector probe, developed by C. R. N., Strasbourg, France, consists of a CdTe- crystal (2-3 mm

Paris-Sud XI, Université de

456

EFFECT OF BACK-CONTACT COPPER CONCENTRATION ON CdTe CELL OPERATION  

E-Print Network (OSTI)

EFFECT OF BACK-CONTACT COPPER CONCENTRATION ON CdTe CELL OPERATION A.O. Pudov, M. Gloeckler, S of Mechanical Engineering Colorado State University, Ft. Collins, CO 80523 ABSTRACT CdTe solar cells were Copper is commonly used to form low-barrier contacts to p-type CdTe absorbers. Copper, however, is a fast

Sites, James R.

457

Self-Assembly of CdTe Tetrapods into Network Monolayers at the Air/Water  

E-Print Network (OSTI)

Self-Assembly of CdTe Tetrapods into Network Monolayers at the Air/Water Interface Matthew D present a versatile method for cadmium telluride (CdTe) tetrapod syn- thesis by utilizing multiple Te the tetrapod shape. CdTe tetra- pods are a promising inorganic semicon- ductor for photovoltaic cells due

Lin, Zhiqun

458

CHARACTERIZATION OF UNDOPED HIGH RESISTIVITY CdTe GROWN BY A THM METHOD  

E-Print Network (OSTI)

185 CHARACTERIZATION OF UNDOPED HIGH RESISTIVITY CdTe GROWN BY A THM METHOD R. STUCK, J. C. MULLER techniques of cadmium tellu- ride crystals (CdTe) allowed to obtain high resistivity crystals of detector shape of the phase diagram of CdTe, it seemed interesting to characterize these materials in order

Paris-Sud XI, Université de

459

Exploring the Potential for High-Quality Epitaxial CdTe Solar Cells , Ana Kanevce2  

E-Print Network (OSTI)

Exploring the Potential for High-Quality Epitaxial CdTe Solar Cells Tao Song1 , Ana Kanevce2 National Renewable Energy Laboratory, Golden, CO, 80401, USA Abstract -- Traditional polycrystalline CdTeV and ~ 20%. Epitaxial CdTe with high-quality, low defect-density, and high carrier density, could yield

Sites, James R.

460

Biaxial CdTe/CaF2 films growth on amorphous surface , F. Tang a  

E-Print Network (OSTI)

electron microscopy Metal organic chemical vapor deposition A continuous and highly biaxially textured CdTe nanorods as a buffer layer. The interface between the CdTe film and CaF2 nanorods and the morphology of the CdTe film were studied by transmission electron microscopy (TEM) and scanning electron microscopy

Wang, Gwo-Ching

Note: This page contains sample records for the topic "rg zn cd" 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.


461

DISSERTATION ELECTRON-REFLECTOR STRATEGY FOR CdTe THIN-FILM SOLAR CELLS  

E-Print Network (OSTI)

DISSERTATION ELECTRON-REFLECTOR STRATEGY FOR CdTe THIN-FILM SOLAR CELLS Submitted by Kuo-Jui Hsiao ELECTRON- REFLECTOR STRATEGY FOR CdTe THIN-FILM SOLAR CELLS BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS SOLAR CELLS The CdTe thin-film solar cell has a large absorption coefficient and high theoretical

Sites, James R.

462

USING CORIOLIS FORCE TO FACILITATE MOLECULAR TRANSPORTATION AND FLUID MIXING IN CD MICROFLUIDICS  

E-Print Network (OSTI)

e. USING CORIOLIS FORCE TO FACILITATE MOLECULAR TRANSPORTATION AND FLUID MIXING IN CD MICROFLUIDICS Coriolis Force to Facilitate Molecular Transportation and Fluid Mixing in CD Microfluidics Platform and Fluid mixing in compact disk (CD) microfluidic platform where centrifugal force is used as the driving

Kassegne, Samuel Kinde

463

CD-ROMs et cours en ligne : de nouveaux outils de formation en traitement du signal  

E-Print Network (OSTI)

CD-ROMs et cours en ligne : de nouveaux outils de formation en traitement du signal Kheira Sahli in data processing topics. Educational CD-ROMs and Web based on-line modules based on the signal of animations and their high degree of interactivity, CD-ROMs and Web based on-line modules are useful tools

Paris-Sud XI, Université de

464

Introduction The Coastal Change Analysis Project St. Croix Estuary Region CD-ROM data set  

E-Print Network (OSTI)

Introduction The Coastal Change Analysis Project St. Croix Estuary Region CD-ROM data set uses the U.S. Fish and Wildlife Service, the Gulf of Maine Program and Environment Canada. The CD-ROM of CD-ROM datasets. Historically valuable as a habitat for salmon, this area is now threatened

465

Book Review of Dictionary of Marine Natural Products with CD-ROM  

Science Journals Connector (OSTI)

Book Review of Dictionary of Marine Natural Products with CD-ROM ... A CD-ROM is included, which allows users to search the entire contents of the Dictionary. ... The CD-ROM contains searchable indices on 35 text fields as well as structure and substructure search. ...

Zhendong Jin

2008-02-05T23:59:59.000Z

466

Structural Phase Transition in AuZn Alloys  

SciTech Connect

AuxZn1-x alloys undergo a shape memory martensitic transformation whose temperature and nature (continuous or discontinuous) is strongly composition dependent. Neutron diffraction experiments were performed on single crystals of x=50 and 52 to explore the structural changes occurring at the transition temperature. A transverse modulation with wavevector q0=(1/3,1/3,0) develops below the transition temperature, with no observable change in lattice parameter. However, the Bragg peak width shows a broadening suggesting an unresolved rhombohedral distortion similar to what has been observed in NiTi-Fe alloys.

Winn,B.L.; Shapiro, S.M.; Lashley, J.C.; Opeil, C.; Ratcliff, W.

2009-05-03T23:59:59.000Z

467

Piezospectroscopic study of substitutional Ni in ZnO  

SciTech Connect

The effect of uniaxial stress on the electronic {sup 3}T{sub 1}(F)?{sup 3}T{sub 2}(F) transitions of Ni{sup 2+} in ZnO at 4216, 4240, and 4247 cm{sup ?1} is investigated by means of Fourier transform IR absorption spectroscopy. A stress Hamiltonian is constructed which accounts for the behavior of these transitions under uniaxial stress. It is shown that the split pattern and polarization properties of these IR absorption lines are consistent with a dynamic Jahn-Teller effect in the {sup 3}T{sub 2}(F) state of Ni.

Lavrov, E. V.; Herklotz, F. [Technische Universität Dresden, 01062 Dresden (Germany); Kutin, Y. S. [Kazan Federal University, Federal Center of Shared Facilities, 420008 Kazan (Russian Federation)

2014-02-21T23:59:59.000Z

468

Mechanism of the formation of precursors for the Cu/ZnO methanol synthesis catalysts by a coprecipitation method  

Science Journals Connector (OSTI)

Precursors of Cu/ZnO catalysts with various Cu/Zn molar ratios were prepared by a coprecipitation method. It was found that amorphous copper hydroxycarbonate and sodium zinc carbonate were intermediates for the f...

Shin-ichiro Fujita; Agus Muhamad Satriyo; Guo Cheng Shen…

1995-01-01T23:59:59.000Z

469

The effect of ZnO in methanol synthesis catalysts on Cu dispersion and the specific activity  

Science Journals Connector (OSTI)

The effect of ZnO in Cu/ZnO catalysts prepared by the coprecipitation method has been studied using measurements of the surface area of Cu, the specific activity for the methanol synthesis by hydrogenation of CO2

T. Fujitani; J. Nakamura

470

An ethanol vapor detection probe based on a ZnO nanorod coated optical fiber long period grating  

Science Journals Connector (OSTI)

A new ethanol vapor detection probe based on an optical fiber long period grating overlaid with a zinc oxide (ZnO) nanorods layer is presented. The ZnO nanorod layer was developed onto...

Konstantaki, Maria; Klini, Argyro; Anglos, Demetrios; Pissadakis, Stavros

2012-01-01T23:59:59.000Z

471

Growth mechanism and properties of ZnO nanorods synthesized by plasma-enhanced chemical vapor deposition  

E-Print Network (OSTI)

and ul- traviolet (UV) optoelectronic devices. ZnO can be found easily as n-type because of Zn. Trans- parent electrodes in optoelectronic devices should have high visible transmittance, low

Cao, Hui

472

Influence of Surface Preparation on Scanning Kelvin Probe Microscopy and Electron Backscatter Diffraction Analysis of Cross Sections of CdTe/CdS Solar Cells: Preprint  

SciTech Connect

In this work we investigated different methods to prepare cross sections of CdTe/CdS solar cells for EBSD and SKPM analyses. We observed that procedures used to prepare surfaces for EBSD are not suitable to prepare cross sections, and we were able to develop a process using polishing and ion-beam milling. This process resulted in very good results and allowed us to reveal important aspects of the cross section of the CdTe film. For SKPM, polishing and a light ion-beam milling resulted in cross sections that provided good data. We were able to observe the depletion region on the CdTe film and the p-n junction as well as the interdiffusion layer between CdTe and CdS. However, preparing good-quality cross sections for SKPM is not a reproducible process, and artifacts are often observed.

Moutinho, H. R.; Dhere, R. G.; Jiang, C. S.; Al-Jassim, M. M.

2011-06-01T23:59:59.000Z

473

Preparation of patterned graphene-ZnO hybrid nanoflower and nanorods on ITO surface  

SciTech Connect

Hybrid ZnO nanostructure with controlled morphology have been proved to enhance the physical and chemical properties of the material and used as photodiode and sensor. In this paper, hybrid graphene-ZnO nanoflower and nanorods have been successfully synthesized via a seed mediated method with micropatterned ZnO nanoseed treated with multilayer graphene (MLG) in a hydrothermal process. In typical process, the ZnO nanoseeds with and without resists were spin coated with a multilayer graphene prior to the growth process. The treated seed was then used to grow the ZnO nanostructures in the growth solution that contained equimolar (0.04 M) of zinc nitrate hexahydrate and hexamethylenetetramine. The growth process was carried out inside an autoclave at temperature 70 °C. The growth time was 4 h. It was proved that the MLG treatment on micropatterning substrate may induce new morphology formation of ZnO nanostructure. It is expected that the heteroepitaxy reaction occurred between the MLG and ZnO interface. This presence method can be used as an alternative approach to control the morphology of hybrid ZnO nanostructure growth.

Tan, Sin Tee; Umar, Marjoni Imamora Ali; Ginting, Riski Titian; Yahaya, Muhammad; Yap, Chi Chin [School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor (Malaysia); Umar, Akrajas Ali; Salleh, Muhamad Mat; Majlis, Burhanuddin Yeop; Naumar, Fitri Yenni [Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor (Malaysia)

2013-11-27T23:59:59.000Z

474

Degradation of ZnO Window Layer for CIGS by Damp-Heat Exposure: Preprint  

SciTech Connect

This paper summarizes our work with more details and an emphasis on the DH-induced degradation of Al-doped ZnO and Zn1-xMgxO alloys. The other two TCOs, ITO and F:SnO2, are not included here.

Pern, F.J.; To, B.; DeHart, C.; Li, X.; Glick, S. H.; Noufi, R.

2008-08-01T23:59:59.000Z

475

ZnO Nanostructures Single-Crystal Hexagonal Disks and Rings of  

E-Print Network (OSTI)

ZnO Nanostructures Single-Crystal Hexagonal Disks and Rings of ZnO: Low-Temperature, Large of Chemistry University of New Orleans New Orleans, LA 70148 (USA) Fax: (+1)504-280-6860 E-mail: fli@uno.edu Dr to ellipsoids to disks, and even much more complex shapes, by adjusting experimental parameters,[33] we can

Wang, Zhong L.

476

Tunable White-Light-Emitting Mn-Doped ZnSe Nanocrystals Vijay Kumar Sharma,  

E-Print Network (OSTI)

Tunable White-Light-Emitting Mn-Doped ZnSe Nanocrystals Vijay Kumar Sharma, Burak Guzelturk, Talha report white-light-emitting Mn-doped ZnSe nanocrystals (NCs) that are synthesized using modified orange emission (580 nm), allowed us to achieve excitation wavelength tailorable white-light generation

Demir, Hilmi Volkan

477

Photoluminescence-based measurements of the energy gap and diffusion length of Zn3P2  

E-Print Network (OSTI)

or liquid contacts,5 with p-Zn3P2/Mg Schottky diodes having exhibited 6% solar energy-conversion efficiencyPhotoluminescence-based measurements of the energy gap and diffusion length of Zn3P2 Gregory M ellipsometric measurements. Bulk minority carrier lifetimes of 20 ns were observed by time

Kimball, Gregory

478

Water adsorption on stepped ZnO surfaces from MD simulation David Raymand a  

E-Print Network (OSTI)

Water adsorption on stepped ZnO surfaces from MD simulation David Raymand a , Adri C.T. van Duin b Keywords: Zinc oxide Water Solid­gas interfaces Construction and use of effective interatomic interactions force-field for use in molecular dynamics simulations of the ZnO­ water system. The force

Goddard III, William A.

479

The possibility of improving the structural perfection of the new heterojunctions GaAs-(Ge2)1? x (ZnSe)x, Ge-(Ge2)1?x (ZnSe)x, GaP-(Ge2)1?x (ZnSe)x, and Si-(Ge2)1?x (ZnSe)x  

Science Journals Connector (OSTI)

Based on morphological investigations, as well as on a study of the scanning patterns and diffraction spectra of the heterostructures GaAs-(Ge2)1?x (ZnSe)x, Ge-(Ge2)1?x (ZnSe)x, Ga...

A. S. Saidov; É. A. Koshchanov; A. Sh. Razzakov

1998-01-01T23:59:59.000Z

480

Symbiotic Value of an Embodied Agent in Language Learning Proceedings of 37th Annual Hawaii International Conference on System Sciences (CD/ROM),  

E-Print Network (OSTI)

International Conference on System Sciences (CD/ROM), Computer Society Press, 2004, CD Rom, 10 pages. Best paper

Massaro, Dominic

Note: This page contains sample records for the topic "rg zn cd" 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.


481

Direct kinetic correlation of carriers and ferromagnetism in Co2+ : ZnO  

SciTech Connect

We report the use of controlled introduction and removal of Zni to test the hypothesis that high-Curie-temperature ferromagnetism in cobalt-doped ZnO (Co2+:ZnO) is mediated by carriers. Using oriented epitaxial Co2+:ZnO films grown by chemical vapor deposition, kinetics measurements were used to correlate the oxidative quenching of ferromagnetism with the diffusion and oxidation of interstitial zinc. These results demonstrate controlled systematic variation of a key parameter involved in the ferromagnetism of Co2+:ZnO, namely interstitial zinc, and in the process unambiguously reveal this ferromagnetism to be dependent upon carriers. The distinction between defect-bound and free carriers in Co2+:ZnO is discussed

Kittilstved, Kevin R.; Schwartz, Dana A.; Tuan, Allan C.; Heald, Steve M.; Chambers, Scott A.; Gamelin, Daniel R.

2006-07-21T23:59:59.000Z

482

Synthesis and photocatalytic activity of ZnO/TiO2 nanoparticle  

Science Journals Connector (OSTI)

ZnO/TiO2 photocatalysts were synthesised via wet-chemical techniques. These can subsequently be used as efficient photocatalysts which can effectively degrade organic contaminants. Photocatalysts prepared with these techniques were characterised with X-ray diffraction (XRD), infrared (FTIR) spectrophotometer, UV-visible spectroscopy and photo luminescence. XRD confirmed the formation of ZnO/TiO2 nanoparticle. UV-visible spectroscopy showed significant difference in the optical absorption. Enhancement in optical absorption of ZnO/TiO2 indicated that it can be used as an efficient photocatalyst under UV irradiation. The photo-reduction activities of photocatalysts were evaluated using methyl orange as organic contaminant. The experiment demonstrated that the photo-degradation value of ZnO/TiO2 was significantly higher than that of ZnO.

R. Parimaladevi; K. Sumathi

2014-01-01T23:59:59.000Z

483

Atomic layer deposition of ZnO on ultralow-density nanoporous silica aerogel monoliths  

Science Journals Connector (OSTI)

We report on atomic layer deposition of an ? 2 -nm-thick ZnO layer on the inner surface of ultralow-density ( ? 0.5 % of the full density) nanoporoussilica aerogel monoliths with an extremely large effective aspect ratio of ? 10 5 (defined as the ratio of the monolith thickness to the average pore size). The resultant monoliths are formed by amorphous- SiO 2 core/wurtzite-ZnO shell nanoparticles which are randomly oriented and interconnected into an open-cell network with an apparent density of ? 3 % and a surface area of ? 10 0 m 2 g ? 1 . Secondary ion mass spectrometry and high-resolution transmission electron microscopy imaging reveal excellent uniformity and crystallinity of ZnO coating. Oxygen K -edge and Zn L 3 -edge soft x-ray absorption near-edge structure spectroscopy shows broadened O p - as well as Zn s - and d -projected densities of states in the conduction band.

S. O. Kucheyev; J. Biener; Y. M. Wang; T. F. Baumann; K. J. Wu; T. van Buuren; A. V. Hamza; J. H. Satcher Jr.; J. W. Elam; M. J. Pellin

2005-01-01T23:59:59.000Z

484

Nitrogen doping in pulsed laser deposited ZnO thin films using dense plasma focus  

Science Journals Connector (OSTI)

Pulsed laser deposition synthesized ZnO thin films, grown at 400 °C substrate temperature in different oxygen gas pressures, were irradiated with 6 shots of pulsed nitrogen ions obtained from 2.94 kJ dense plasma focus to achieve the nitrogen doping in ZnO. Structural, compositional and optical properties of as-deposited and nitrogen ion irradiated ZnO thin films were investigated to confirm the successful doping of nitrogen in irradiated samples. Spectral changes have been seen in the nitrogen irradiated ZnO thin film samples from the low temperature PL measurements. Free electron to acceptor emissions can be observed from the irradiated samples, which hints towards the successful nitrogen doping in films. Compositional analysis by X-ray photoelectron spectroscopy and corresponding shifts in binding energy core peaks of oxygen and nitrogen confirmed the successful use of plasma focus device as a novel source for nitrogen ion doping in ZnO thin films.

S. Karamat; R.S. Rawat; T.L. Tan; P. Lee; S.V. Springham; E. Ghareshabani; R. Chen; H.D. Sun

2011-01-01T23:59:59.000Z

485

Manufacturing Process Optimization to Improve Stability, Yield and Efficiency of CdS/CdTe PV Devices: Final Report, December 2004 - January 2009  

SciTech Connect

The research by Colorado State University advances the understanding of device stability, efficiency, and process yield for CdTe PV devices.

Sampath, W. S.; Enzenroth, A.; Barth, K.

2009-03-01T23:59:59.000Z

486

Room temperature ferromagnetism in undoped and Fe doped ZnO nanorods: Microwave-assisted synthesis  

SciTech Connect

One-dimensional (1D) undoped and Fe doped ZnO nanorods of average length {approx}1 {mu}m and diameter {approx}50 nm have been obtained using a microwave-assisted synthesis. The magnetization (M) and coercivity (H{sub c}) value obtained for undoped ZnO nanorods at room temperature is {approx}5x10{sup -3} emu/g and {approx}150 Oe, respectively. The Fe doped ZnO samples show significant changes in M -H loop with increasing doping concentration. Both undoped and Fe doped ZnO nanorods exhibit a Curie transition temperature (T{sub c}) above 390 K. Electron spin resonance and Moessbauer spectra indicate the presence of ferric ions. The origin of ferromagnetism in undoped ZnO nanorods is attributed to localized electron spin moments resulting from surface defects/vacancies, where as in Fe doped samples is explained by F center exchange mechanism. -- Graphical abstract: Room temperature ferromagnetism has been reported in undoped and Fe doped ZnO nanorods of average length {approx}1 {mu}m and diameter {approx}50 nm. Display Omitted Research Highlights: {yields} Microwave-assisted synthesis of undoped and Fe doped ZnO nanorods. {yields} Observation of room temperature ferromagnetism in undoped and Fe doped ZnO nanorods. {yields} Transition temperature (T{sub c}) obtained in undoped and doped samples is above 390 K. {yields} In undoped ZnO origin of ferromagnetism is explained in terms of defects/vacancies. {yields} Ferromagnetism in Fe doped ZnO is explained by F-center exchange mechanism.

Limaye, Mukta V.; Singh, Shashi B. [DST unit on Nanoscience, Department of Physics, University of Pune, Pune 411007 (India); Das, Raja; Poddar, Pankaj [Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008 (India); Kulkarni, Sulabha K., E-mail: s.kulkarni@iiserpune.ac.i [DST unit on Nanoscience, Indian Institute of Science Education and Research, Pune 411021 (India)

2011-02-15T23:59:59.000Z

487

Effect of doping Fe and Si on electronic structure and optical Properties of CdS  

Science Journals Connector (OSTI)

The geometrical structure, electronic properties and optical properties of CdS and M@CdS (M=Fe, Si) were studied systemically with first principles density functional theory. The band structure and density of states have been calculated to analyze the effect of the doping Fe and Si elements on the electronic properties and magnetic properties of CdS. The results show that all the conductive, magnetic and optical properties of CdS are changed by the doped elements. Both obvious and insignificant changes are found in some cases, which provide helpful guide for preparing doped CdS materials.

Yan-Xiao Han; Chuan-Lu Yang; Jun-Sheng Yang; Mei-Shan Wang; Xiao-Guang Ma

2013-01-01T23:59:59.000Z

488

Cadmium sulfate and CdTe-quantum dots alter DNA repair in zebrafish (Danio rerio) liver cells  

SciTech Connect

Increasing use of quantum dots (QDs) makes it necessary to evaluate their toxicological impacts on aquatic organisms, since their contamination of surface water is inevitable. This study compares the genotoxic effects of ionic Cd versus CdTe nanocrystals in zebrafish hepatocytes. After 24 h of CdSO{sub 4} or CdTe QD exposure, zebrafish liver (ZFL) cells showed a decreased number of viable cells, an accumulation of Cd, an increased formation of reactive oxygen species (ROS), and an induction of DNA strand breaks. Measured levels of stress defense and DNA repair genes were elevated in both cases. However, removal of bulky DNA adducts by nucleotide excision repair (NER) was inhibited with CdSO{sub 4} but not with CdTe QDs. The adverse effects caused by acute exposure of CdTe QDs might be mediated through differing mechanisms than those resulting from ionic cadmium toxicity, and studying the effects of metallic components may be not enough to explain QD toxicities in aquatic organisms. - Highlights: • Both CdSO{sub 4} and CdTe QDs lead to cell death and Cd accumulation. • Both CdSO{sub 4} and CdTe QDs induce cellular ROS generation and DNA strand breaks. • Both CdSO{sub 4} and CdTe QDs induce the expressions of stress defense and DNA repair genes. • NER repair capacity was inhibited with CdSO{sub 4} but not with CdTe QDs.

Tang, Song; Cai, Qingsong [The Institute of Environmental and Human Health, Texas Tech University, Lubbock, TX 79416 (United States); Chibli, Hicham [Department of Biomedical Engineering, McGill University, Montréal, QC H3A 2B4 (Canada); Allagadda, Vinay [The Institute of Environmental and Human Health, Texas Tech University, Lubbock, TX 79416 (United States); Nadeau, Jay L. [Department of Biomedical Engineering, McGill University, Montréal, QC H3A 2B4 (Canada); Mayer, Gregory D., E-mail: greg.mayer@ttu.edu [The Institute of Environmental and Human Health, Texas Tech University, Lubbock, TX 79416 (United States)

2013-10-15T23:59:59.000Z

489

Photovolatic effect in CdS-Cu2S heterojunctions  

Science Journals Connector (OSTI)

The current-voltage characteristic of CdS-Cu2S solar cells is analyzed in terms of the contributing physical effects. In Cu2S it is minority-carrier generation and diffusion, in CdS it is a Schottky barrier layer with sliding boundary conditions, nj(j), and the development of high-field domains which control the current. These domains are responsible for current saturation, but they may also limit the current to a value below the one which can be supplied from Cu2S, hence they present a ceiling for the observed short-circuit current. The given model is in satisfactory agreement with several experimental observations not previously understood.

K. W. Böer

1976-06-15T23:59:59.000Z

490

Charge transport properties of CdMnTe radiation detectors  

SciTech Connect

Growth, fabrication and characterization of indium-doped cadmium manganese telluride (CdMnTe)radiation detectors have been described. Alpha-particle spectroscopy measurements and time resolved current transient measurements have yielded an average charge collection efficiency approaching 100 %. Spatially resolved charge collection efficiency maps have been produced for a range of detector bias voltages. Inhomogeneities in the charge transport of the CdMnTe crystals have been associated with chains of tellurium inclusions within the detector bulk. Further, it has been shown that the role of tellurium inclusions in degrading chargecollection is reduced with increasing values of bias voltage. The electron transit time was determined from time of flight measurements. From the dependence of drift velocity on applied electric field the electron mobility was found to be n = (718 55) cm2/Vs at room temperature.

Kim K.; Rafiel, R.; Boardman, M.; Reinhard, I.; Sarbutt, A.; Watt, G.; Watt, C.; Uxa, S.; Prokopovich, D.A.; Belas, E.; Bolotnikov, A.E.; James, R.B.

2012-04-11T23:59:59.000Z

491

High Spin Spectroscopy and Shape Evolution in 105Cd  

E-Print Network (OSTI)

High spin states in 105Cd were studied using 16O beam on 92Mo reaction at an incident beam energy of 75 MeV. The level scheme of 105Cd has been observed up to an excitation energy of 10.8 MeV with the addition of 30 new gamma transitions to the previous work. Spin and parity for most of the reported levels are assigned from the DCO ratios and linear polarization measurements. The microscopic origin of the investigated band structures is discussed in the context of triaxial projected shell model. The energies of observed positive and negative parity bands agree with the predictions of the TPSM by considering triaxial deformation for the observed excited band structures. The shape evolution with increasing angular momentum is explained in the framework of Cranked Shell Model and the Total Routhian Surface calculations.

Raju, M Kumar; Muralithar, S; Singh, R P; Sheikh, J A; Bhat, G H; Kumar, R; Bala, Indu; Trivedi, T; Dhal, A; Rani, K; Gurjar, R; Singh, D; Palit, R; Naidu, B S; Saha, S; Sethi, J; Donthi, R; Jadhav, S

2015-01-01T23:59:59.000Z

492

Characterization of isothermal vapor phase epitaxial (Hg,Cd)Te  

Science Journals Connector (OSTI)

We report on the characterization of mercury cadmium telluride (Hg 1?x Cd x Te) film grown by the isothermal vapor phase epitaxial method (ISOVPE) and on the surface conversion of bulk Hg 1?xCd x Te to larger bandgap material. The crystal perfection is evaluated using defect etching electron beam and electrolyte electroreflectance (EBER and EER) and Rutherford backscattering spectrometry (RBS). Hall measurements are used to measure carrier densities and mobilities. Surface concentrations and concentration profiles are measured for the ISOVPE grown layers by transmission Fourier transform infrared spectroscopy (FTIR) and electron?probe microanalysis (EPMA) to establish quantitative informations about composition control. Metal–insulator?semiconductor (MIS) structures were made and the properties important to device performance such as compositional uniformity storage time and carrier concentration are measured. The ISOVPE layers are compared in quality to films grown by other methods and show promise for MIS devices.

S. B. Lee; L. K. Magel; M. F. S. Tang; D. A. Stevenson; J. H. Tregilgas; M. W. Goodwin; R. L. Strong

1990-01-01T23:59:59.000Z

493

Band crossing in a shears band of {sup 108}Cd  

SciTech Connect

The level lifetimes have been measured for a shears band of {sup 108}Cd that exhibits band crossing. The observed level energies and B(M1) rates have been successfully described by a semiclassical geometric model based on shear mechanism. In this geometric model, the band crossing in the shears band has been described as the reopening of the angle between the blades of a shear.

Roy, Santosh; Datta, Pradip; Pal, S.; Chattopadhyay, S.; Bhattacharya, S.; Goswami, A.; Jain, H. C.; Joshi, P. K.; Bhowmik, R. K.; Kumar, R.; Muralithar, S.; Singh, R. P.; Madhavan, N.; Rao, P. V. Madhusudhana [S. N. Bose National Centre for Basic Sciences. Block JD, Sector III, Saltlake City, Kolkata 700098 (India); iThemba Labs, Post Office Box 722, Somerset West 7129 (South Africa); Saha Institute of Nuclear Physics, 1/AF Bidhannager Kolkata, 700 064 (India); Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005 (India); Inter University Accelerator Center, Aruna Asaf Ali Marg, New Delhi 110 067 (India); Department of Physics, Andra University, Visakhapatnam 530 003 (India)

2010-05-15T23:59:59.000Z

494

Photoluminescence upconversion in colloidal CdTe quantum dots  

Science Journals Connector (OSTI)

Efficient photoluminescence (PL) up-conversion has been observed in colloidal CdTe quantum dots with an energy gain of as high as 360 meV. Compared with the normal PL, the peak energy of this up-converted PL (UCPL) shows a redshift of about 80 meV, and the corresponding radiative lifetime becomes nearly twice as long. This UCPL is attributed to the carrier recombination involving surface states mainly through a thermal excitation process.

Xiaoyong Wang; W. William Yu; Jiayu Zhang; Jose Aldana; Xiaogang Peng; Min Xiao

2003-09-22T23:59:59.000Z

495

Quantifying electron-phonon coupling in CdTe12xSex nanocrystals via coherent phonon manipulation  

E-Print Network (OSTI)

Quantifying electron-phonon coupling in CdTe12xSex nanocrystals via coherent phonon manipulation B to manipulate coherent phonon excitation and quantify the strength of electron-phonon coupling in CdTe1Ã?xSex nanocrystals (NCs). Raman active CdSe and CdTe longitudinal optical phonon (LO) modes are excited and probed

Xu, Xianfan

496

A SMALL PORTABLE DETECTOR HEAD USING MIS-CONTACTED CdTe FOR X-RAY SPECTROMETRY  

E-Print Network (OSTI)

339 A SMALL PORTABLE DETECTOR HEAD USING MIS-CONTACTED CdTe FOR X-RAY SPECTROMETRY P. EICHINGER for semiconductor radiation detectors is discussed. A versatile head consisting of a 2 mm thick, 10 mm diameter CdTe and its applica- tion to CdTe and CdS has already been published [2, 3], but because of the many

Paris-Sud XI, Université de

497

Micron-Resolution Photocurrent of CdTe Solar Cells Using Multiple Wavelengths Jason F. Hiltner1  

E-Print Network (OSTI)

Micron-Resolution Photocurrent of CdTe Solar Cells Using Multiple Wavelengths Jason F. Hiltner1 variations in the quantum efficiency near the CdTe band gap, which track intermixing of Cd wavelengths with energies near and slightly below the CdTe band gap (1.5 eV) to be used. Temperature tuning

Sites, James R.

498

Design and Investigation of Micro-Patterned Injection-Moulded Polymer Substrates for Use in CD-based Microfluidics  

E-Print Network (OSTI)

-based Microfluidics for Cell Manipulation ICOMM/4M 2010 No. 63 D. Trifonov1 , K. Kostadinov2 , M. Al-Wahab3 , V. Kotev MOULDING AND CD - BASED MICROFLUIDIC DEVICES Micro- and nanostructures can be replicated on polymer- devices like CD microfluidic platform for Bio-MEMS applications, Lab-on-a-CD, CD centrifugal mi

Mustakerov, Ivan

499

Reference Materials Available on CD-ROM The Centers for Disease Control and Prevention (CDC)/National Center for Environmental  

E-Print Network (OSTI)

Reference Materials Available on CD-ROM The Centers for Disease Control and Prevention (CDC)/National Center for Environmental Health has released a CD-ROM of three reference publications: Healthy Housing available at http://www.cdc.gov/nceh/ehs/Pictorial_Keys.htm. Where to Get a Copy of the CD-ROM The CD-ROM

500

Catalyst-free growth of ZnO nanorods and their nanodevice applications  

Science Journals Connector (OSTI)

We review recent research activities on catalyst-free growth of ZnO nanorods and their nanodevice applications. Since ZnO nanomaterials add excellent chemical sensing characteristics due to their large surface-to-volume ratio to intrinsic ZnO properties including semiconducting and piezoelectric properties, a wide direct band gap energy, and a large exciton binding energy, they are expected to become one of the most ideal materials for future high performance nanodevice applications. There have been extensive research activities for synthesis of high quality ZnO nanomaterials for nanodevice applications. Among the numerous growth methods, we have focused on catalyst-free metal-organic chemical vapour deposition, since this enables us to grow vertically aligned ZnO nanorods on various substrates, including Si and glass, without any special substrate treatment. This catalyst-free approach yields high purity and single crystalline nanostructures, and does not require a subsequent catalyst removal process. Furthermore, we established techniques for fabricating ZnO nanorod heterostructures with composition modulations along either radial or axial direction, which can provide more opportunities for novel optical and electronic device development. Furthermore, we briefly describe our activities on ZnO nanorod device fabrication and evaluation, including field-effect transistors, biological molecule sensors, Schottky diodes, and light emitting devices. We also address the remaining scientific issues and technical challenges, required to fully understand the device characteristics and to realise integrated nanodevices.

Won Il Park; Dong-Wook Kim; Sug Woo Jung; Gyu-Chul Yi

2006-01-01T23:59:59.000Z