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1

Dye-Sensitized Solar Cells  

Broader source: Energy.gov [DOE]

DOE supports research and development projects aimed at increasing the efficiency and lifetime of dye-sensitized solar cells (DSSCs). Below are a list of current projects, summary of the benefits,...

2

Dye-sensitized solar cells  

DOE Patents [OSTI]

A low-cost dye-sensitized Schottky barrier solar cell comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the semiconductor, a transparent thin-film layer of a reducing agent over the dye, and a thin-film layer of metal over the reducing agent. The ohmic contact and metal layer constitute electrodes for connection to an external circuit and one or the other or both are made transparent to permit light to penetrate to the dye and be absorbed therein for generating electric current. The semiconductor material chosen to be the substrate is one having a wide bandgap and which therefore is transparent; the dye selected is one having a ground state within the bandgap of the semiconductor to generate carriers in the semiconductor, and a first excited state above the conduction band edge of the semiconductor to readily conduct electrons from the dye to the semiconductor; the reducing agent selected is one having a ground state above the ground state of the sensitizer to provide a plentiful source of electrons to the dye during current generation and thereby enhance the generation; and the metal for the thin-film layer of metal is selected to have a Fermi level in the vicinity of or above the ground state of the reducing agent to thereby amply supply electrons to the reducing agent.

Skotheim, Terje A. [Berkeley, CA

1980-03-04T23:59:59.000Z

3

Dye-sensitized solar cells  

DOE Patents [OSTI]

A low-cost dye-sensitized Schottky barrier solar cell is comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the semiconductor, a transparent thin-film layer of a reducing agent over the dye, and a thin-film layer of metal over the reducing agent. The ohmic contact and metal layer constitute electrodes for connection to an external circuit and one or the other or both are made transparent to permit light to penetrate to the dye and be absorbed therein for generating electric current. The semiconductor material chosen to be the substrate is one having a wide bandgap and which therefore is transparent; the dye selected is one having a ground state within the bandgap of the semiconductor to generate carriers in the semiconductor, and a first excited state above the conduction band edge of the semiconductor to readily conduct electrons from the dye to the semiconductor; the reducing agent selected is one having a ground state above the ground state of the sensitizer to provide a plentiful source of electrons to the dye during current generation and thereby enhance the generation; and the metal for the thin-film layer of metal is selected to have a Fermi level in the vicinity of or above the ground state of the reducing agent to thereby amply supply electrons to the reducing agent. 3 figs.

Skotheim, T.A.

1980-03-04T23:59:59.000Z

4

SunShot Initiative: Dye-Sensitized Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Dye-Sensitized Solar Cells to Dye-Sensitized Solar Cells to someone by E-mail Share SunShot Initiative: Dye-Sensitized Solar Cells on Facebook Tweet about SunShot Initiative: Dye-Sensitized Solar Cells on Twitter Bookmark SunShot Initiative: Dye-Sensitized Solar Cells on Google Bookmark SunShot Initiative: Dye-Sensitized Solar Cells on Delicious Rank SunShot Initiative: Dye-Sensitized Solar Cells on Digg Find More places to share SunShot Initiative: Dye-Sensitized Solar Cells on AddThis.com... Concentrating Solar Power Photovoltaics Research & Development Crystalline Silicon Thin Films Multijunctions Organic Photovoltaics Dye-Sensitized Solar Cells Competitive Awards Systems Integration Balance of Systems Dye-Sensitized Solar Cells Graphic showing the seven layers of a dye-sensitized PV cell: electrode, hole conductor, dope, TiO2, blocking layer, transparent conductive oxide, and glass.

5

Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Ever since the invention of the silicon solar cell in the 1940s, people have acknowledged the ... potential of photovoltaic systems for large scale electricity production. However, semiconductor grade silicon waf...

Jan Kroon; Andreas Hinsch

2003-01-01T23:59:59.000Z

6

An expression for the bridge-mediated electron transfer rate in dye-sensitized solar cells  

Science Journals Connector (OSTI)

...transfer rate in dye-sensitized solar cells Emanuele Maggio Alessandro Troisi...CR) process in dye-sensitized solar cells, where the dye is often connected...tunnelling|dye-sensitized solar cell| 1. Introduction Dye-sensitized...

2014-01-01T23:59:59.000Z

7

Solid-State Photogalvanic Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Solid-State Photogalvanic Dye-Sensitized Solar Cells ... photogalvanic; dye-sensitized; solar cells; thermal; electron; transfer ... (3) Modern organic photovoltaic solar cells, wherein charge separation occurs in a photoactive layer of organic semiconductor material and must migrate to collecting electrodes,(4) can be regarded as solid-state photogalvanic cells. ...

Seare A. Berhe; Habtom B. Gobeze; Sundari D. Pokharel; Eunsol Park; W. Justin Youngblood

2014-05-29T23:59:59.000Z

8

Organic dye-sensitized sponge-like TiO2 photoanode for dye-sensitized solar cells  

Science Journals Connector (OSTI)

...photoanode for dye-sensitized solar cells Jian Liu 1 Qiang Yang...Light harvesting inside a solar cell is crucial for overall...effects of polymerization-assisted assembly and flexible substrate...efficiency in dye-sensitized solar cells. Chem. Commun. 2005...

2013-01-01T23:59:59.000Z

9

Dye?sensitized Solar Cells for Solar Energy Harvesting  

Science Journals Connector (OSTI)

Dye?sensitized solar cells (DSSCs) also known as Gratzel cells have attracted the interests of researchers to a great extent because of its cost effective and easy manufacturing process without involving highly sophisticated lithographic technique and high cost raw materials as usually seen in conventional solar cell. Based on simple photo?electrochemical process it has got immense potential in converting solar energy to electrical power in remote and desert area where the supply of conventional power is not possible. The overall peak power?production efficiency of dye?sensitized solar cells has been reported around 11 percent so they are best suited to low?density applications and the price?to?performance ratio obtained through these solar cells is superior to others. DSSCs have ability to absorb even diffused sunlight and therefore work in cloudy whether as well without much impact over the efficiency. The present communication deals with a review of our work on DSSCs wherein we have used cost effective natural dyes/pigments as a sensitizer of nc?TiO2 and discussed about various key factors affecting the conversion efficiency of DSSC.

M. S. Roy; Y. S. Deol; Manish Kumar; Narottam Prasad; Yojana Janu

2011-01-01T23:59:59.000Z

10

Dye Regeneration Kinetics in Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Nevertheless, the calculated diffusion limit provides a useful estimate of the maximum attainable regeneration rate. ... Design of Organic Dyes and Cobalt Polypyridine Redox Mediators for High-Efficiency Dye-Sensitized Solar Cells ... cells are discussed, considering the high photovoltaic efficiencies obtained for devices employing Ru bipyridyl sensitizer dyes in combination with iodide/tri-iodide based redox electrolytes. ...

Torben Daeneke; Attila J. Mozer; Yu Uemura; Satoshi Makuta; Monika Fekete; Yasuhiro Tachibana; Nagatoshi Koumura; Udo Bach; Leone Spiccia

2012-09-27T23:59:59.000Z

11

Aerogel tempelated ZnO dye-sensitized solar cells.  

SciTech Connect (OSTI)

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

12

Eumelanin Dye-sensitized Solar Cell Grown with Matrix-assisted Pulsed Laser  

E-Print Network [OSTI]

Eumelanin Dye-sensitized Solar Cell Grown with Matrix-assisted Pulsed Laser Evaporation~4 DHICA DHICA #12; III Abstract At present the majority dye-sensitized solar cell research all, and besides provides and does not have other uses for the dye-sensitized solar cell use. In order to improve

13

Rational design of hybrid dye-sensitized solar cells composed of double-layered photoanodes with  

E-Print Network [OSTI]

tandem solar cells, leading to higher power conversion efficiency. Dye-sensitized solar cells (DSSCs based solar cells.2�12 Different methods have been adopted to realize better power conversion efficiency energy, leading to low efficiency. Yamaguchi et al. fabricated tandem dye-sensitized solar cells

Lin, Zhiqun

14

Holographically Defined TiO2 Electrodes for Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Holographically Defined TiO2 Electrodes for Dye-Sensitized Solar Cells ... We analyze the morphological features of the h-TiO2 electrodes and consider their applicability to dye-sensitized solar cells (DSSCs). ... holographic lithography; solar cells ...

Woo-Min Jin; Ju-Hwan Shin; Chang-Yeol Cho; Ji-Hwan Kang; Jong Hyeok Park; Jun Hyuk Moon

2010-10-27T23:59:59.000Z

15

Hierarchically Structured Microspheres for High-Efficiency Rutile TiO2Based Dye-Sensitized Solar Cells  

E-Print Network [OSTI]

candidate for use in water splitting, photo- catalysis, sensors, and dye-sensitized solar cells (DSSCs) overHierarchically Structured Microspheres for High-Efficiency Rutile TiO2Based Dye-Sensitized Solar and the Ostwald ripening process. Dye-sensitized solar cells (DSSCs) assembled by employing these complex rutile

Lin, Zhiqun

16

A Comparative Study of Quasi-solid Nanoclay Gel Electrolyte and Liquid Electrolyte Dye Sensitized Solar Cells.  

E-Print Network [OSTI]

??Dye sensitized solar cells (DSSCs) are currently being explored as a cheaper alternative to the more common silicon (Si) solar cell technology. In addition to… (more)

Main, Laura

2012-01-01T23:59:59.000Z

17

Hybrid Carbon Nanotubes-TiO2 Photoanodes for High Efficiency Dye-Sensitized Solar Cells  

E-Print Network [OSTI]

Hybrid Carbon Nanotubes-TiO2 Photoanodes for High Efficiency Dye-Sensitized Solar Cells Kadiatou-Boulet, Varennes, Quebec J3X 1S2, Canada Department of Chemical Sciences and Technology & NAST Center, University, 25133 Brescia, Italy Solar Cells Laboratory, Institute of Materials Science and Technology (IMRE

18

In Situ Synthesized Economical Tungsten Dioxide Imbedded in Mesoporous Carbon for Dye-Sensitized Solar Cells As Counter Electrode Catalyst  

Science Journals Connector (OSTI)

In Situ Synthesized Economical Tungsten Dioxide Imbedded in Mesoporous Carbon for Dye-Sensitized Solar Cells As Counter Electrode Catalyst ... As a novel photovoltaic device to convert solar energy to electricity directly, dye-sensitized solar cells (DSCs) have developed considerably over the last 20 years. ...

Mingxing Wu; Xiao Lin; Liang Wang; Wei Guo; Yudi Wang; Jinqiu Xiao; Anders Hagfeldt; Tingli Ma

2011-09-26T23:59:59.000Z

19

Hierarchically structured photoelectrodes for dye-sensitized solar cells  

E-Print Network [OSTI]

-sensitized solar cells (DSCs) and organic/ inorganic hybrid solar cells. Guozhong Cao Guozhong Cao, Ph, and authored and edited 5 books, including ``Nanostructures and Nanomaterials''. His current research-ion batteries, supercapacitors, and hydrogen storage materials. This journal is ª The Royal Society of Chemistry

Cao, Guozhong

20

Siliconized Triarylamines As Redox Mediator in Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Siliconized Triarylamines As Redox Mediator in Dye-Sensitized Solar Cells ... We thank the Canadian Foundation for Innovation (CFI) and the Natural Sciences and Engineering Research Council of Canada (NSERC), York University (S.M.), and University of Toronto (T.P.B.) for their financial support. ...

Ali Sepehrifard; Brett A. Kamino; Timothy P. Bender; Sylvie Morin

2012-10-31T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

High-Efficiency Dye-Sensitized Solar Cell with Three-Dimensional Photoanode  

Science Journals Connector (OSTI)

High-Efficiency Dye-Sensitized Solar Cell with Three-Dimensional Photoanode ... Materials Chemistry and Nanochemistry Research Group, Center for Inorganic and Polymeric Nanomaterials, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada ... In addition, he thanks the Natural Sciences and Engineering Research Council (NSERC) of Canada and the NSERC Solar Network for strong and sustained financial support of this work. ...

Nicolas Tétreault; Éric Arsenault; Leo-Philipp Heiniger; Navid Soheilnia; Jérémie Brillet; Thomas Moehl; Shaik Zakeeruddin; Geoffrey A. Ozin; Michael Grätzel

2011-09-30T23:59:59.000Z

22

Evaluating Charge Recombination Rate in Dye-Sensitized Solar Cells from Electronic Structure Calculations  

Science Journals Connector (OSTI)

Estimating the Maximum Attainable Efficiency in Dye-Sensitized Solar Cells ... Altogether, our study provides evidence that adsorption of the sensitizer via "three anchoring sites" is a key requisite to obtain high open-circuit potentials when employed in DSSC devices, thus paving the route to the design of new and more efficient sensitizers. ... cells are discussed, considering the high photovoltaic efficiencies obtained for devices employing Ru bipyridyl sensitizer dyes in combination with iodide/tri-iodide based redox electrolytes. ...

E. Maggio; N. Martsinovich; A. Troisi

2012-03-13T23:59:59.000Z

23

Nitrogen-doped graphene as transparent counter electrode for efficient dye-sensitized solar cells  

SciTech Connect (OSTI)

Graphical abstract: Display Omitted Highlights: ? NG sheets are prepared through a hydrothermal reduction of graphite oxide. ? The transparent NG counter electrodes of DSCs are fabricated at room temperature. ? Transparent NG electrode exhibits excellent catalytic activity for the reduction of I{sub 3}{sup ?}. ? The DSC with NG electrode achieves a comparable efficiency to that of the Pt-based cell. ? The efficiency of rear illumination is about 85% that of front illumination. -- Abstract: Nitrogen-doped graphene sheets are prepared through a hydrothermal reduction of graphite oxide in the presence of ammonia and applied to fabricate the transparent counter electrode of dye-sensitized solar cells. The atomic percentage of nitrogen in doped graphene sample is about 2.5%, and the nitrogen bonds display pyridine and pyrrole-like configurations. Cyclic voltammetry studies demonstrate a much higher electrocatalytic activity toward I{sup ?}/I{sub 3}{sup ?} redox reaction for nitrogen-doped graphene, as compared with pristine graphene. The dye-sensitized solar cell with this transparent nitrogen-doped graphene counter electrode shows conversion efficiencies of 6.12% and 5.23% corresponding to front-side and rear-side illumination, respectively. Meanwhile, the cell with a Pt counter electrode shows a conversion efficiency of 6.97% under the same experimental condition. These promising results highlight the potential application of nitrogen-doped graphene in cost-effective, transparent dye-sensitized solar cells.

Wang, Guiqiang, E-mail: wgqiang123@163.com [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)] [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China); Fang, Yanyan; Lin, Yuan [Institute of Chemistry, Chinese Academy of Science, Beijing 100080 (China)] [Institute of Chemistry, Chinese Academy of Science, Beijing 100080 (China); Xing, Wei; Zhuo, Shuping [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)] [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)

2012-12-15T23:59:59.000Z

24

Computational Modeling of Plasmon-Enhanced Light Absorption in a Multicomponent Dye Sensitized Solar Cell  

Science Journals Connector (OSTI)

Argonne-Northwestern Solar Energy Research Center Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States ... Fortunately, both the economical and the environmental issues associated with semiconductor based solar cells can be mitigated by using dye-sensitized solar cells (DSSCs),(4) which use organic dye molecules coated on TiO2 particles as the photoactive component to reduce fabrication expenses and eliminate expensive and toxic ingredients. ... for a given incident wavelength by combining this Hamiltonian coupling with free energy changes and ground state reorganization energies that are obtained using an implicit solvation simulation, physicochem. ...

Hanning Chen; Martin G. Blaber; Stacey D. Standridge; Erica J. DeMarco; Joseph T. Hupp; Mark A. Ratner; George C. Schatz

2012-04-11T23:59:59.000Z

25

Highly Efficient Monolithic Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

These advantages make DSSCs an attractive renewable power source in the near future. ... First, we analyzed the disadvantages of M-DSSCs: (1) The carbon-based counter electrode is too thick to attain adequate conversion efficiency and it is also not suitable for flexible type DSSCs. ... The device harvests a high proportion of the incident solar energy flux (46%) and shows exceptionally high efficiencies for the conversion of incident photons to elec. ...

Jeong Kwon; Nam-Gyu Park; Jun Young Lee; Min Jae Ko; Jong Hyeok Park

2013-02-22T23:59:59.000Z

26

Structure-property relationships of organic dyes with D-?-A structure in dye-sensitized solar cells  

Science Journals Connector (OSTI)

Organic dyes with a D-?-A structure ... drawn increasing attention as sensitizers in dye-sensitized solar cells (DSSCs), due to their rich photophysical ... properties, easy molecular tailoring, and low-cost production

Zhong-Sheng Wang; Fang Liu

2010-06-01T23:59:59.000Z

27

Atomic Layer Deposition of TiO2 on Aerogel Templates: New Photoanodes for Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Atomic layer deposition was employed to coat the aerogel template conformally with various thicknesses of TiO2 with subnanometer precision. ... The TiO2-coated aerogel membranes were incorporated as photoanodes in dye-sensitized solar cells. ...

Thomas W. Hamann; Alex B. F. Martinson; Jeffrey W. Elam; Michael J. Pellin; Joseph T. Hupp

2008-06-18T23:59:59.000Z

28

Utilization of Direct and Diffuse Sunlight in a Dye-Sensitized Solar Cell — Silicon Photovoltaic Hybrid Concentrator System  

Science Journals Connector (OSTI)

Nanocrystalline dye-sensitized solar cells (DSSCs) and organic photovoltaics (OPV) are two families of low-cost solar devices that absorb light in the visible part of the spectrum. ... del Cueto, J. A.Comparison of Energy Production and Performance from Flat-Plate Photovoltaic Module Technologies Deployed at Fixed Tilt. ... dye-sensitized solar cell as a top cell for high-energy photons, and a Cu In Ga selenide thin-film bottom cell for lower-energy photons, produces AM 1.5 solar to elec. ...

Greg D. Barber; Paul G. Hoertz; Seung-Hyun Anna Lee; Neal M. Abrams; Janine Mikulca; Thomas E. Mallouk; Paul Liska; Shaik M. Zakeeruddin; Michael Grätzel; Anita Ho-Baillie; Martin A. Green

2011-02-28T23:59:59.000Z

29

Conducting polymers based counter electrodes for dye-sensitized solar cells  

SciTech Connect (OSTI)

Conducting polymer films were synthesized and employed as an alternative to expensive platinum counter electrodes for dye-sensitized solar cells. poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) thin films were spin-coated and polypyrrole films were electrochemically deposited via cyclic voltammetry method on ITO substrates. The morphology of the films were imaged by SEM and AFM. These films show good catalytic activity towards triiodide reduction as compared to Pt/FTO electrodes. Finally the photovoltaic performance of DSSC fabricated using N3 dye were compared with PT/FTO, PEDOT/ITO, and e-PPy counter electrodes.

Veerender, P., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Saxena, Vibha, E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Gusain, Abhay, E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Jha, P., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Koiry, S. P., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Chauhan, A. K., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Aswal, D. K., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Gupta, S. K., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com [Technical Physics Division, Bhabha Atomic Research Centre, Mumbai - 400085 (India)

2014-04-24T23:59:59.000Z

30

Thermal Processing and Characterizations of Dye-Sensitized Solar Cells Based on Nanostructured TiO2  

Science Journals Connector (OSTI)

Thermal Processing and Characterizations of Dye-Sensitized Solar Cells Based on Nanostructured TiO2 ... This work reports an extensive study about the effects of thermal treatments on the performance of TiO2-based dye-sensitized solar cells. ... The current–voltage characteristics were measured using an Advantest R6243 current/voltage unit after a 10 min wait for achieving thermal equilibrium under AM 1.5G, simulated solar light of 100 mW cm–2 and irradiated from a WACOM super solar simulator. ...

Filippo Fabbri; Francesca Detto; Nicola Armani; Norifusa Satoh; Tullo Besagni; Maura Pavesi; Giancarlo Salviati

2013-01-04T23:59:59.000Z

31

An Unconventional Route to High-Efficiency Dye-Sensitized Solar Cells via Embedding Graphitic Thin Films into TiO2 Nanoparticle  

E-Print Network [OSTI]

and impedance spectroscopy. KEYWORDS: Carbon/TiO2 thin film, dye-sensitized solar cells, block copolymer-treated single-wall carbon nanotubes (a-SWCNs) in TiO2 film.37 The a-SWCNs modified solar cell indicated a 25An Unconventional Route to High-Efficiency Dye-Sensitized Solar Cells via Embedding Graphitic Thin

Lin, Zhiqun

32

Probing the Low Fill Factor of NiO p-Type Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

(2) A dye-sensitized photocathode also has the promising application in the production of solar fuels via artificial photosynthsis. ...

Zhongjie Huang; Gayatri Natu; Zhiqiang Ji; Mingfu He; Mingzhe Yu; Yiying Wu

2012-11-28T23:59:59.000Z

33

Application of Vertically-Aligned SWNT Films for the Counter Electrode of Dye-Sensitized Solar Cells  

E-Print Network [OSTI]

Application of Vertically-Aligned SWNT Films for the Counter Electrode of Dye-Sensitized Solar a solar cell in which VA-SWNT films were used for a CE, in place of conventional sputtered Pt on fluorine to use vertically aligned single-walled carbon nanotube (VA-SWNT) films [1] synthesized by ACCVD method

Maruyama, Shigeo

34

Molecular Engineering of Organic Dyes for Improved Recombination Lifetime in Solid-State Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Metal-free dyes are advantageous because of their high molar extinction coefficients, ease of modification and engineering, lower cost and environmental impact, and increased performance in solid-state dye-sensitized solar cells (ssDSSCs). ... The operating principle of a ssDSSC: (1) upon absorption of light, the dye generates an exciton; (2) the excited electron is injected into the conduction band of the TiO2; (3) the dye is regenerated by the hole-transporting material (HTM); and (4) the charges percolate to the electrodes. ... The effect of hole transport material pore filling on photovoltaic performance in solid-state dye-sensitized solar cells ...

William H. Nguyen; Colin D. Bailie; Julian Burschka; Thomas Moehl; Michael Grätzel; Michael D. McGehee; Alan Sellinger

2013-04-15T23:59:59.000Z

35

An Integrated Power Pack of Dye-Sensitized Solar Cell and Li Battery Based on Double-Sided TiO2 Nanotube Arrays  

E-Print Network [OSTI]

is based on a silicon solar panel and a solid-state lithium battery as the two independent parts, whichAn Integrated Power Pack of Dye-Sensitized Solar Cell and Li Battery Based on Double-Sided TiO2 harvest and storage processes. This power pack incorporates a series-wound dye- sensitized solar cell

Wang, Zhong L.

36

Dye-sensitized solar cells based on electrospun polyacrylonitrile (PAN) nanofibre membrane gel electrolyte  

Science Journals Connector (OSTI)

Abstract Dye Sensitized Solar Cells (DSSCs) based on electrospun nanofibre membrane electrolytes offer several advantages over liquid electrolyte based solar cells. Nanofibre membranes having different thicknesses were prepared by electrospinning on platinum electrodes from a 11 wt% solution of polyacrylonitrile (PAN) in N,N-dimethylformamide (DMF) at an applied voltage of 8 kV. The membranes were then activated by immersing in a solution containing potassium iodide (KI) (0.06 g), propylene carbonate (PC) (0.8 g) and iodine (I2) (0.0092 g) for 30 minutes to obtain “gel” type membrane electrolytes with different thicknesses. These nanofibre membrane electrolytes were used to fabricate quasi-solid state (gel) \\{DSSCs\\} and the performance of these solar cells were compared with \\{DSSCs\\} fabricated with liquid electrolyte (KI:PC:I2) and conventional PAN based gel electrolyte (PAN:KI:PC:I2). DSSC with nanofibre membrane electrolyte of thickness 9.14 ?m showed the highest light-to-electricity conversion efficiency of 5.2% whereas an identical cell based on corresponding liquid electrolyte showed an efficiency of 5.3%. The open circuit voltage (VOC), short circuit current density (JSc) and fill factor for the solar cell based on this electrolyte was 0.67 V, 13.31 mA cm?2 and 59% respectively at an incident light intensity of 1000 W m?2 with a 1.5 AM filter.

M.A.K.L. Dissanayake; H.K.D.W.M.N.R. Divarathne; C.A. Thotawatthage; C.B. Dissanayake; G.K.R. Senadeera; B.M.R. Bandara

2014-01-01T23:59:59.000Z

37

Aggregated TiO2 Based Nanotubes for Dye Sensitized Solar Cells  

SciTech Connect (OSTI)

One-dimensional (1D) semiconducting oxides have attracted great attention for dye sensitized solar cells (DSCs), but the overall performance is still quite limited as compared to TiO2 nanocrystalline DSCs. Here, we report the synthesis of aggregated TiO2 based nanotubes with controlled morphologies and crystalline structures to obtain an overall power conversion efficiency of 9.9% using conventional dye without any additional chemical treatment steps. The high efficiency is attributed to the unique aggregate structure for light harvesting, optimized high surface area, and good crystallinity of the nanotube aggregates obtained through proper thermal annealing. This study demonstrates that high efficiency DSCs can be obtained with 1D nanomaterials, and provides lessons on the importance of optimizing both the nanocrystalline structure and the overall microscale morphology.

Nie, Zimin; Zhou, Xiaoyuan; Zhang, Qifeng; Cao, Guozhong; Liu, Jun

2013-11-01T23:59:59.000Z

38

Highly Transparent Carbon Counter Electrode Prepared via an in Situ Carbonization Method for Bifacial Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Despite offering relatively high conversion efficiencies for solar energy, typical dye-sensitized solar cells suffer from durability problems that result from their use of org. ... The advantage of this new generation of solar cells is that they can be produced at low cost, i.e., potentially advantages and disadvantages of each type of platinum-free catalyst and share techniques for guiding the design of catalysts in future research. ...

Chenghao Bu; Yumin Liu; Zhenhua Yu; Sujian You; Niu Huang; Liangliang Liang; Xing-Zhong Zhao

2013-06-28T23:59:59.000Z

39

Low-temperature TiO2 Films for Dye-sensitized Solar Cells: Factors Affecting Energy Conversion Efficiency  

Science Journals Connector (OSTI)

Low-temperature TiO2 Films for Dye-sensitized Solar Cells: Factors Affecting Energy Conversion Efficiency ... The difference in short-circuit current is a factor of 2.2 with the Ru-based dye N719 and is 3.5 with the organic dye D5. ...

Alexander G. Agrios; Anders Hagfeldt

2008-06-18T23:59:59.000Z

40

Enhanced light-conversion efficiency of titanium-dioxide dye-sensitized solar cells with the addition of  

E-Print Network [OSTI]

Enhanced light-conversion efficiency of titanium- dioxide dye-sensitized solar cells attributed to a slightly enhanced dye-adsorption behavior and a change in the TiO2 surface chemistry due oxide have been studied to modify the surface chemistry through pH changes to enhance the adsorption

Cao, Guozhong

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Novel Polymer Gel Electrolyte with Organic Solvents for Quasi-Solid-State Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Dye-sensitized solar cells (DSSCs) have received attention due to their attractive features, such as high energy conversion efficiency, possible low cost of production, and environment friendly nature; these advantages make them attractive to substitute conventional silicone photovoltaics as a new solar energy source. ... At the same time, it avoids the disadvantages of liquid-state DSSC. ... advantage that they act as a binder for the electrodes. ...

Sheng-Yen Shen; Rui-Xuan Dong; Po-Ta Shih; Vittal Ramamurthy; Jiang-Jen Lin; Kuo-Chuan Ho

2014-10-09T23:59:59.000Z

42

Electrochemical Impedance Spectroscopy Characterization of Electron Transport and Recombination in ZnO Nanorod Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

In this work we carried out electrochemical impedance spectroscopic (EIS) characterizations on a ZnO nanorod dye-sensitized solar cell to investigate its electron transport and recombination properties and how these properties influence the cell performance. ... Supplemental figures for impedance spectra under illumination, the transmission line model, comparison of the measured capacitance to the depletion model, charge transfer resistance at open-circuit conditions, and total resistances of the cell. ...

Chuan He; Zhi Zheng; Huili Tang; Linan Zhao; Fang Lu

2009-05-26T23:59:59.000Z

43

Highly Efficient Dye-Sensitized Solar Cells by Using a Mesostructured Anatase TiO2 Electrode with High Dye Loading Capacity  

Science Journals Connector (OSTI)

Highly Efficient Dye-Sensitized Solar Cells by Using a Mesostructured Anatase TiO2 Electrode with High Dye Loading Capacity ... The growth and assembly of TiO2 nanostructures with enhanced charge transfer and light harvesting have attracted much attention for fabricating highly efficient dye-sensitized solar cells. ... The photovoltaic measurements indicate that the mesoporous TiO2 layer enhances the dye loading capacity, the electron transfer efficiency, and the photocurrent of the cell, contributing to the significant improvement of the energy conversion efficiency of the dye-sensitized solar cells. ...

Wei Shao; Feng Gu; Chunzhong Li; Mengkai Lu

2010-09-03T23:59:59.000Z

44

A phenylcarbazole functionalized ruthenium dye for efficient dye-sensitized solar cells  

Science Journals Connector (OSTI)

A new heteroleptic Ru(II) complex of [Ru(Hcpip)(Hdcbpy)(NCS)2]?·[N(C4H9)4]+·H2O {where Hcpip = 2-(4-(9H-carbazol-9-yl)phenyl)-1H-imidazo[4,5-f] [1,10]phenanthroline, Hdcbpy = 4-carboxylic acid-4?-carboxylate-2,2?-bipyridine} has been synthesized and demonstrated to function as an efficient sensitizer for nanocrystalline TiO2-based dye-sensitized solar cell (DSSC). The DSSC based on this Ru(II) complex showed a short-circuit photocurrent density of 19.2 mA cm?2, an open-circuit photovoltage of 630 mV, a fill factor of 57.7%, corresponding to an overall light to electricity conversion efficiency of 6.98% under simulated solar light irradiation at 100 mW cm?2. This efficiency value is 2.81- and 1.08-fold efficiency values of 2.48% and 6.47% observed for carbazole-free parent complex [Ru(Hpip)(Hdcbpy)(NCS)2]?·[N(C4H9)4]+·H2O {where Hpip = 2-phenyl-1H-imidazo[4,5-f][1,10]phenanthroline}- and cis-bis(isothiocyanato)bis(4,4?-dicarboxylic acid-2,2?-bipyridine)ruthenium(II) N3-based solar cells respectively, under identical experimental conditions. The molecular structures and electronic properties of the Ru(II) complexes were also investigated by means of density functional theory calculations in an effort to understand the device performance observed.

Su-Hua Fan; An-Guo Zhang; Chuan-Chuan Ju; Ke-Zhi Wang

2011-01-01T23:59:59.000Z

45

Charge transport through split photoelectrodes in dye-sensitized solar cells  

SciTech Connect (OSTI)

Charge transport and recombination are relatively ignored parameters while upscaling dye-sensitized solar cells (DSCs). Enhanced photovoltaic parameters are anticipated by merely widening the devices physical dimensions, viz., thickness and area as evident from the device design adopted in reported large area DSCs. These strip designs lead to ?50% loss in photocurrent compared to the high efficiency lab scale devices. Herein, we report that the key to achieving higher current density (J{sub SC}) is optimized diffusion volume rather than the increased photoelectrode area because kinetics of the devices is strongly influenced by the varied choices of diffusion pathways upon increasing the electrode area. For a given electrode area and thickness, we altered the photoelectrode design by splitting the electrode into multiple fractions to restrict the electron diffusion pathways. We observed a correlation between the device physical dimensions and its charge collection efficiency via current-voltage and impedance spectroscopy measurements. The modified electrode designs showed >50% increased J{sub SC} due to shorter transport time, higher recombination resistance and enhanced charge collection efficiency compared to the conventional ones despite their similar active volume (?3.36?×?10{sup ?4}?cm{sup 3}). A detailed charge transport characteristic of the split devices and their comparison with single electrode configuration is described in this article.

Fakharuddin, Azhar; Ahmed, Irfan; Yusoff, Mashitah M.; Jose, Rajan, E-mail: rjose@ump.edu.my [Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, Kuantan 26300 (Malaysia); Khalidin, Zulkeflee [Faculty of Electrical and Electronics Engineering, Universiti Malaysia Pahang, Kuantan 26600 (Malaysia)

2014-04-28T23:59:59.000Z

46

Present status of solid state photoelectrochemical solar cells and dye sensitized solar cells using PEO-based polymer electrolytes  

Science Journals Connector (OSTI)

Due to energy crises in the future, much effort is being directed towards alternate sources. Solar energy is accepted as a novel substitute for conventional sources of energy. Out of the long list of various types of solar cells available on the market, solid state photoelectrochemical solar cells (SSPECs) and dye sensitized solar cells (DSSCs) are proposed as an alternative to costly crystalline solar cell. This review provides a common platform for SSPECs and DSSCs using polymer electrolyte, particularly on polyethylene oxide (PEO)-based polymer electrolytes. Due to numerous advantageous properties of PEO, it is frequently used as an electrolyte in both SSPECs as well as DSSCs. In DSSCs, so far high efficiency (more than 11%) has been obtained only by using volatile liquid electrolyte, which suffers many disadvantages, such as corrosion, leakage and evaporation. The PEO-based solid polymer proves its importance and could be used to solve the problems stated above. The recent developments in SSPECs and DSSCs using modified PEO electrolytes by adding nano size inorganic fillers, blending with low molecular weight polymers and ionic liquid (IL) are discussed in detail. The role of ionic liquid in modifying the electrical, structural and photoelectrochemical properties of PEO polymer electrolytes is also described.

Pramod Kumar Singh; R K Nagarale; S P Pandey; H W Rhee; Bhaskar Bhattacharya

2011-01-01T23:59:59.000Z

47

Organic solvent based TiO2 dispersion paste for dye-sensitized solar cells prepared by industrial production level procedure  

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In order to prepare the TiO2...liquid dispersions for the electrodes of dye-sensitized solar cells with industrial mass production level at a reasonable cost, the present...2 liquid dispersions by a general indus...

Ryohei Mori; Tsutomu Ueta; Kazuo Sakai; Yasuhiro Niida…

2011-03-01T23:59:59.000Z

48

Self-ordering anodized nanotubes: Enhancing the performance by surface plasmon for dye-sensitized solar cell  

SciTech Connect (OSTI)

In the present work, electrochemical anodization has been used to prepare uniform TiO{sub 2} nanotube array photoelectrode. The average internal diameter, tube length and wall thickness of the optimized morphology is {approx}180 nm, 14 {mu}m and 10 nm, respectively. It was found that the tube diameter increases with the anodization voltage. Diffraction data reveals that the nanotubes consist solely of anatase phase. Back illuminated geometry of dye-sensitized solar cell (DSSC), with nanotubes grown at 60 V for 2 h, gave a cell performance of 4.5%. TiO{sub 2} nanotubes are loaded with silver (Ag) nanoparticles synthesized by a hydrothermal route. The Ag particle size is controlled resulting in solar conversion efficiency to increase by 22%. The DSSC based on TiO{sub 2} nanotube with Ag nanoparticles shows power conversion efficiency of 5.5%. Detailed characterization are performed, presented and discussed. - Graphical abstract: Enhanced solar conversion efficiency of dye-sensitized solar cells by decorating TiO{sub 2} nanotube array with Ag nanoparticles. Highlights: Black-Right-Pointing-Pointer Uniform array of TiO{sub 2} nanotubes synthesized via electrochemical anodization. Black-Right-Pointing-Pointer Back illuminated DSSC gave a cell performance of 4.5%. Black-Right-Pointing-Pointer TiO{sub 2} nanotubes are loaded with Ag nanoparticles, which increased the power conversion efficiency to 5.5%.

Agarwala, S., E-mail: agarwala.shweta@gmail.com [Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive, Singapore 117576 (Singapore); Ho, G.W. [Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive, Singapore 117576 (Singapore)

2012-05-15T23:59:59.000Z

49

Controllable and Rapid Synthesis of Long ZnO Nanowire Arrays for Dye-Sensitized Solar Cells  

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In this paper, we report a controllable and rapid growth of long ZnO nanowire arrays by a microwave heating method with fresh precursor solution continuously injected into the reactor. ... In our work, along with the continuous injection of fresh solution into the reactor, part of the heated reactant is pumped out of the reactor, and the concentrations of the species in the solution gradually become stabilization and finally in equilibrium. ... Mahpeykar, S. M.; Koohsorkhi, J.; Ghafoori-fard, H.Ultra-Fast Microwave-Assisted Hydrothermal Synthesis of Long Vertically Aligned ZnO Nanowires for Dye-Sensitized Solar Cell Application Nanotechnology 2012, 23, 165602 ...

Liqing Liu; Kunquan Hong; Xing Ge; Dongmei Liu; Mingxiang Xu

2014-06-27T23:59:59.000Z

50

Cost-Effective Replacement for Iodide in Dye-Sensitized Solar...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Marketing SummaryDye-sensitized solar cells (DSSCs) are used to create electrical energy from sunlight. The cell has three components: the cathode, the photoanode, and the...

51

Computational Modeling of Plasmon-Enhanced Light Absorption in a Multicomponent Dye Sensitized Solar Cell  

E-Print Network [OSTI]

commercially available solar cell panels are made of monocrystalline silicon doped with toxic heavy metals Solar Cell Hanning Chen, Martin G. Blaber, Stacey D. Standridge, Erica J. DeMarco, Joseph T. Hupp, Mark A. Ratner, and George C. Schatz* Argonne-Northwestern Solar Energy Research Center Department

52

Nanoclay Gelation Approach toward Improved Dye-Sensitized Solar Cell Efficiencies: An Investigation of Charge Transport and Shift in the TiO2 Conduction Band  

Science Journals Connector (OSTI)

Nanoclay Gelation Approach toward Improved Dye-Sensitized Solar Cell Efficiencies: An Investigation of Charge Transport and Shift in the TiO2 Conduction Band ... Nanoclay minerals play a promising role as additives in the liquid electrolyte to form a gel electrolyte for quasi-solid-state dye-sensitized solar cells, because of the high chemical stability, unique swelling capability, ion exchange capacity, and rheological properties of nanoclays. ... The nanoclays used in previous studies were mainly of smectite/montmorillonite type, which belong to the family of cationic clays (hydroxides layers with negative charge). ...

Xiu Wang; Sneha A. Kulkarni; Bruno Ieiri Ito; Sudip K. Batabyal; Kazuteru Nonomura; Chee Cheong Wong; Michael Grätzel; Subodh G. Mhaisalkar; Satoshi Uchida

2012-12-19T23:59:59.000Z

53

Intertwined Aligned Carbon Nanotube Fiber Based Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Two fibers are twined together to produce the fiber-shaped solar cell. ... Dye cations are reduced to their neutral state by I– ions with production of I3– ions, which are reverted to I– ions after acceptance of electrons at the counter electrode. ... Aligned Carbon Nanotube Sheets for the Electrodes of Organic Solar Cells ...

Tao Chen; Longbin Qiu; Zhenbo Cai; Feng Gong; Zhibin Yang; Zhongsheng Wang; Huisheng Peng

2012-04-13T23:59:59.000Z

54

Supramolecular Interactions of Chenodeoxycholic Acid Increase the Efficiency of Dye-Sensitized Solar Cells Based on a Cobalt Electrolyte  

Science Journals Connector (OSTI)

Upon photoexcitation of the chemisorbed dye, charge separation occurs at the dye-sensitized semiconductor interface, and electrons are injected into the oxide conduction band (CB); the generated charges travel across the TiO2 nanoparticle network and can be collected at the transparent conducting glass back contact. ... (19, 22-26) Fully organic sensitizers have also been developed because of their increased molar extinction coefficient, as compared to Ru(II)-dyes, spectral tunability, and reduced environmental impact,(27, 28) and showed very high photovoltaic efficiencies, exceeding 10%. ... The advantage of this new generation of solar cells is that they can be produced at low cost, i.e., potentially <1 U S. $/peak watt. ...

Paolo Salvatori; Gabriele Marotta; Antonio Cinti; Chiara Anselmi; Edoardo Mosconi; Filippo De Angelis

2013-02-06T23:59:59.000Z

55

Rapid Charge Transport in Dye-Sensitized Solar Cells Made from Vertically Aligned Single-Crystal Rutile TiO2 Nanowires  

SciTech Connect (OSTI)

A rapid solvothermal approach was used to synthesize aligned 1D single-crystal rutile TiO2 nanowire (NW) arrays on transparent conducting substrates as electrodes for dye-sensitized solar cells. The NW arrays showed a more than 200 times faster charge transport (see picture) and a factor four lower defect state density than conventional rutile nanoparticle films.

Feng, X.; Zhu, K.; Frank, A. J.; Grimes, C. A.; Mallouk, T. E.

2012-03-12T23:59:59.000Z

56

Molecular Design and Performance of Hydroxylpyridium Sensitizers for Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

DSSCs have attracted more and more attention as an economical solar energy conversion device since O’Regan and Grätzel reported them in 1991. ... In this work, comparisons of four dyes with the di(3-hexylthiophene), dihexyldithienosilole, dihexylcyclopentadithiophene and N-hexyldithienopyrrole linkers have revealed some general influences of ?-linker rigidification on the optoelectronic features of titania solar cells employing a cobalt(II/III) redox electrolyte, in terms of energetic and kinetic viewpoints. ... Even small structural changes of dyes result in significant changes in redox energies and adsorption manner of the dyes on TiO2 surface, affecting dramatically the performance of DSSCs based on these dyes. ...

Jianghua Zhao; Xichuan Yang; Ming Cheng; Shifeng Li; Licheng Sun

2013-05-21T23:59:59.000Z

57

Intermolecular Interactions in Dye-Sensitized Solar Cells: A Computational Modeling Perspective  

Science Journals Connector (OSTI)

(10-14) Fully organic sensitizers have been developed as metal-free dyes because of their increased molar extinction coefficient, compared to Ru(II) dyes, spectral tunability, and reduced environmental impact. ... The advantage of this new generation of solar cells is that they can be produced at low cost, i.e., potentially generated a high-efficiency (20-30% quantum efficiency) cathodic photocurrent and a significant photovoltaic effect in reversible Fe2+/Fe3+ redox soln. ...

Mariachiara Pastore; Filippo De Angelis

2013-02-28T23:59:59.000Z

58

Integrating bibliometrics and roadmapping methods: A case of dye-sensitized solar cell technology-based industry in China  

Science Journals Connector (OSTI)

Abstract Emerging industries are attracting increasing attention as they engage in innovation activities that transgress the boundaries of science and technology. Policy makers and industrial communities use roadmapping methods to predict future industrial growth, but the existing bibliometric/workshop methods have limitations when analyzing the full-lifecycle industrial emergence, including the transitions between science, technology, application, and the mass market. This paper, therefore, proposes a framework that integrates bibliometrics and a technology roadmapping (TRM) workshop approach to strategize and plan the future development of the new, technology-based industry. The dye-sensitized solar cell technology-based industry in China is selected as a case study. In this case, the bibliometrics method is applied to analyze the existing position of science and technology, and TRM workshops are used to strategize the future development from technology to application and marketing. Key events and impact on the development of the new, technology-based industry have been identified. This paper will contribute to the roadmapping and foresight methodology, and will be of interest to solar photovoltaic industry researchers.

Xin Li; Yuan Zhou; Lan Xue; Lucheng Huang

2014-01-01T23:59:59.000Z

59

Recent Progress of Counter Electrode Catalysts in Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

We discuss the advantages and disadvantages of each catalyst and put forward ideas for designing new CE catalysts in future research for DSCs and other application fields. ... (79) As pointed out previously,(37) opacity is another disadvantage of carbon CEs, and development of transparent carbon materials for DSCs will become a promising research direction in the future. ... Although the energy conversion efficiency of such modified SnO2 electrodes is still inferior to that of the usually employed TiO2 electrodes, the larger band gap of SnO2 offers the advantage of better long-term stability of the solar cell in the presence of UV light. ...

Mingxing Wu; Tingli Ma

2014-02-11T23:59:59.000Z

60

Investigation of carbon nanotubes decorated with cobalt sulfides of different phases as nanocomposite catalysts in dye-sensitized solar cells  

Science Journals Connector (OSTI)

Abstract In this study, nanocomposites of cobalt sulfide and carbon nanotube (CNT) in the forms of CNT@CoS1.097 and CNT@Co9S8 were deposited on fluorine-doped SnO2 (FTO)-coated glasses by using a facile spray-coating approach, followed by annealing under N2 atmosphere at 400 and 600 °C, respectively; and employed as counter electrodes (CEs) for dye-sensitized solar cells (DSCs). According to the electrochemical properties of \\{CEs\\} quantified by cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel polarization measurements, the CNT@Co9S8 CE showed a superior electrocatalytic activity towards triiodide (I3) reduction to that of the CNT@CoS1.097 CE. As a result, the DSC based on the CNT@Co9S8 CE achieved an impressive photovoltaic conversion efficiency of 7.78%, which was even higher than those of the \\{DSCs\\} assembled with the CNT@CoS1.097 CE (7.29%) and Pt CE (7.46%). This signifies that the CNT@Co9S8 was indeed an efficient and cost-effective Pt-like alternative CE for I3 reduction reaction in DSCs.

Sheng-Yen Tai; Man-Ning Lu; Hsin-Ping Ho; Yaoming Xiao; Jeng-Yu Lin

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" from the National Library of EnergyBeta (NLEBeta).
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61

Pulse-reversal electropolymerization of polypyrrole on functionalized carbon nanotubes as composite counter electrodes in dye-sensitized solar cells  

Science Journals Connector (OSTI)

Abstract In this current work, we proposed a modified two-step method to prepare multiwalled carbon nanotube/polypyrrol (MWCNT/PPy) composite counter electrodes (CEs) toward triiodide reduction in dye-sensitized solar cells (DSCs). \\{MWCNTs\\} were deposited onto the surface of fluorinated tin oxide (FTO) glass substrates by electrophoretic deposition, and then subjected to the \\{PPy\\} electropolymerization by using a pulse-reversal technique. With regard to the electropolymerization of \\{PPy\\} on the MWCNTs-coated FTO substrate by conventional cyclic voltammetry (CV) method (designated as MWCNT/PPy-CV CE), the MWCNT/PPy-PR CE still retrained the mesoporous morphology originating from the MWCNT conductive framework and the \\{PPy\\} thin film was found to be evenly coated on the MWCNT surface. According to the extensive electrochemical analyses, the mesoporous nanostructure of the MWCNT/PPy-PR CE provided increased active surface area for I3 reduction and facilitated the electron transport at the interface of CE/electrolyte and the redox electrolyte penetration within the CE. As a result, the DSC assembled with the MWCNT/PPy-PR CE reaches a comparable photovoltaic efficiency of 6.21% to that of the DSC based on the Pt CE (6.66%).

Wei-Yan Wang; Pan-Ning Ting; Shu-Hui Luo; Jeng-Yu Lin

2014-01-01T23:59:59.000Z

62

Molecular Engineering of Phthalocyanine Sensitizers for Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Phthalocyanines are structurally related to the porphyrins which have established record efficiencies for solar-energy-to-electricity conversion (? = 13%). ... (4) However, the main disadvantages of porphyrins are their low photostability and low molar extinction coefficients in the red–near IR region where the solar flux of photons is maximal. ... (5-10) Even though the Pcs offer advantages compared to organic dyes, they suffer from strong aggregation and lack of directionality in the excited state, which limit the power conversion efficiency. ...

Mine Ince; Jun-Ho Yum; Yongjoo Kim; Simon Mathew; Michael Grätzel; Tomás Torres; Mohammad K. Nazeeruddin

2014-04-03T23:59:59.000Z

63

Investigation of the Electric Field in TiO2/FTO Junctions Used in Dye-Sensitized Solar Cells by Photocurrent Transients  

Science Journals Connector (OSTI)

Investigation of the Electric Field in TiO2/FTO Junctions Used in Dye-Sensitized Solar Cells by Photocurrent Transients ... The input resistance of the scope was 50 ? (dc mode), and each transient was averaged 10 times (repetition rate, 1 Hz) to get a stabilized signal. ... The elementary charge is denoted as q, n, and p are the electron and hole densities, while the respective mobilities are given by ?n and ?p. ...

Sven Rühle; Thomas Dittrich

2005-04-22T23:59:59.000Z

64

Porous Titania Nanosheet/Nanoparticle Hybrids as Photoanodes for Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

This work was financially supported by the ARC through Discovery Projects. ... The device harvests a high proportion of the incident solar energy flux (46%) and shows exceptionally high efficiencies for the conversion of incident photons to elec. ... The thicknesses of the semiconductors incorporated were less than 1 nm and the band gap energies of them were slightly larger than those of normal cryst. ...

Yang Bai; Zheng Xing; Hua Yu; Zhen Li; Rose Amal; Lianzhou Wang

2013-10-25T23:59:59.000Z

65

E-Print Network 3.0 - all-solid-state dye-sensitized solar Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

spectrum Poly-Si CdTe CIGS (Copper-Indium-Gallium-Selenide) Organic and Dye-Sensitized Solar Cells 12;Cd... ;Light Concentration using Nanoparticle Plasmon Resonances 12;Dye...

66

TiO{sub 2} nanospheres and spiny nanospheres for high conversion efficiency in dye-sensitized solar cells with gel electrolyte  

SciTech Connect (OSTI)

In this paper, the TiO{sub 2} nanospheres and spiny nanospheres were synthesized as the photoanode films of dye-sensitized solar cells (DSSCs) with quasi-solid electrolyte for the improvement of solar conversion efficiency. For a given film thickness, the spherical photoanode films have shorter electron transport time and several times slower recombination than those of nanoparticles, indicating that the charge-collection efficiencies of the spherical photoanodes were markedly improved. DSSCs containing the TiO{sub 2} spherical photoelectrode exhibited higher short circuit current because of this specific morphology.

Wang, Juangang, E-mail: shanxiwangjuangang@126.com; Chen, Tie-dan [College of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000, Anhui (China)

2014-04-07T23:59:59.000Z

67

Influence of Number of Benzodioxan-Stilbazole-based Ancillary Ligands on Dye Packing, Photovoltage and Photocurrent in Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

dye-sensitized solar cells; mono versus bis-electron-donor ancillary ligands; solar-to-electric conversion; IPCE; Ru(II) bipyridyl complexes ... IPCE at each wavelength was calculated using eq 1, where ISC is the short-circuit photocurrent density (mA cm–2) under monochromatic irradiation, q is the elementary charge, ? is the wavelength of incident radiation in nm and P0 is the incident radiative flux in W/m2. ... impedance spectroscopy of the voltage dependence of the internal resistance elements of DSCs. ...

Hammad Cheema; Ashraful Islam; Liyuan Han; Ahmed El-Shafei

2014-06-09T23:59:59.000Z

68

Soft-Template Simple Synthesis of Ordered Mesoporous Titanium Nitride-Carbon Nanocomposite for High Performance Dye-Sensitized Solar Cell Counter Electrodes  

Science Journals Connector (OSTI)

(1-3, 6, 7) Owing to these advantages, TiNs can be widely used in different fields as catalysts(8-10) or as parts of certain energy-generating devices, such as dye-sensitized solar cells,(11, 12) fuel cells,(13, 14) and supercapacitors. ... To overcome the disadvantages of the hard template-methods, soft-template approaches have been widely exploited to obtain ordered mesoporous carbons or metal oxides. ... The surface energies and surface relaxations of the three most important surfaces of TiN were studied. ...

Easwaramoorthi Ramasamy; Changshin Jo; Arockiam Anthonysamy; Inyoung Jeong; Jin Kon Kim; Jinwoo Lee

2012-04-06T23:59:59.000Z

69

Rapid sintering of TiO{sub 2} photoelectrodes using intense pulsed white light for flexible dye-sensitized solar cells  

SciTech Connect (OSTI)

Intense pulsed white light (IPWL) sintering was carried out at room temperature, which is suitable dye-sensitized solar cells (DSSCs) fabrication process on plastic substrates for the mass production. Five seconds irradiation of IPWL on TiO{sub 2} electrode significantly improves the photocurrent density and power conversion efficiency of DSSCs by more than 110% and 115%, respectively, compared to the DSSCs without IPWL treatment. These improvements were mainly attributed to the enhanced interconnection between the TiO{sub 2} nanoparticles induced by IPWL illumination, which is confirmed by the impedance spectra analysis.

Jin, Hwa-Young [Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of); Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701 (Korea, Republic of); Kim, Jae-Yup; Ah Lee, Jin; Lee, Kwangsoo; Yoo, Kicheon; Lee, Doh-Kwon; Kim, BongSoo; Young Kim, Jin; Kim, Honggon; Jung Son, Hae [Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of); Kim, Jihyun [Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701 (Korea, Republic of); Ah Lim, Jung, E-mail: jalim@kist.re.kr, E-mail: mjko@kist.re.kr [Interface Control Research Center, Future Convergence Research Division, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of); Jae Ko, Min, E-mail: jalim@kist.re.kr, E-mail: mjko@kist.re.kr [Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of); Green School, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701 (Korea, Republic of)

2014-04-07T23:59:59.000Z

70

Enhanced power conversion efficiency of dye-sensitized solar cells with multifunctional photoanodes based on a three-dimensional TiO2 nanohelix array  

Science Journals Connector (OSTI)

Abstract Developments of metal oxide nanostructures for simultaneous improvements in light harvesting and charge collection can lead to a significant technical progress in various applications such as photoelectrodes for photoelectrochemical cells and various types of solar cells. Here we present an array of three-dimensional titanium dioxide (TiO2) nanohelixes infiltrated with TiO2 nanoparticles as a multifunctional photoanode for dye sensitized solar cells (DSSCs). The unique geometry and the near-single crystallinity of the vertically aligned TiO2 nanohelix array results simultaneously in strong light scattering and enhanced carrier transport and collection, while maintaining a comparable surface area accessible for dye molecules by the infiltrated TiO2 nanoparticles. Consequently, despite a ~40% reduction in dye loading, the overall photon conversion efficiency of the DSSC with the nanoparticle-infiltrated nanohelix-array photoanode is enhanced by 6.2% in comparison with the DSSC with the conventional nanoparticle photoanode.

Seung Hee Lee; Jeong Kwon; Dong Yeong Kim; Kyung Song; Sang Ho Oh; Jaehee Cho; E. Fred Schubert; Jong Hyeok Park; Jong Kyu Kim

2015-01-01T23:59:59.000Z

71

Technology of preparing anode films and the effect of co-sensitization in dye-sensitized solar cells  

Science Journals Connector (OSTI)

In recent years, with the increasing development of science and technology, solar cells have become a hot study. Especially,...-sensitized solar cells (DSSCs) have attracted much attention for...-cost and flexibl...

Jingchang Zhang; Zhenhai Fu; qian lv…

2012-09-01T23:59:59.000Z

72

Highly efficient dye-sensitized solar cells based on HfO{sub 2} modified TiO{sub 2} electrodes  

SciTech Connect (OSTI)

Graphical abstract: Display Omitted Highlights: ? HfO{sub 2} has been used to modify TiO{sub 2} electrodes in dye sensitized solar cells. ? HfO{sub 2} layer increases the dye adsorption. ? Diffusion coefficient (D{sub e}) and lifetime (?{sub e}) of the photoelectrons were increased. ? Solar cell efficiency (?) was greatly improved from 5.67 to 9.59%. -- Abstract: In this article, we describe the use of hafnium oxide (HfO{sub 2}) as a new and efficient blocking layer material to modify TiO{sub 2} electrodes in dye sensitized solar cells. Different thicknesses of HfO{sub 2} over-layers were prepared by simple dip coating from two different precursors and their effects on the performance of DSSCs were studied. The HfO{sub 2} modification remarkably increases dye adsorption, resulting from the fact that the surface of HfO{sub 2} is more basic than that of TiO{sub 2}. Furthermore, the HfO{sub 2} coating demonstrated increased diffusion coefficient (D{sub e}) and lifetime (?{sub e}) of the photoelectrons, indicating the improved retardation of the back electron transfer, which increases short-circuit current (J{sub sc}) and open-circuit voltage (V{sub oc}). Thereby, the photo conversion efficiency (?) of the solar cell was greatly improved from 5.67 to 9.59% (an improvement of 69.02%) as the HfO{sub 2} layer was coated over TiO{sub 2} films.

Ramasamy, Parthiban [Department of Chemistry and GETRC, Kongju National University, 182 Singkwan, Kongju, Chungnam 314-701 (Korea, Republic of)] [Department of Chemistry and GETRC, Kongju National University, 182 Singkwan, Kongju, Chungnam 314-701 (Korea, Republic of); Kang, Moon-Sung; Cha, Hyeon-Jung [Department of Environmental Engineering, Sangmyung University, 300 Anseo-dong, Dongnam-gu, Cheonan-si, Chungnam 330-720 (Korea, Republic of)] [Department of Environmental Engineering, Sangmyung University, 300 Anseo-dong, Dongnam-gu, Cheonan-si, Chungnam 330-720 (Korea, Republic of); Kim, Jinkwon, E-mail: jkim@kongju.ac.kr [Department of Chemistry and GETRC, Kongju National University, 182 Singkwan, Kongju, Chungnam 314-701 (Korea, Republic of)] [Department of Chemistry and GETRC, Kongju National University, 182 Singkwan, Kongju, Chungnam 314-701 (Korea, Republic of)

2013-01-15T23:59:59.000Z

73

A novel hierarchical homogeneous nanoarchitecture of TiO2 nanosheets branched TiO2 nanosheet arrays for high efficiency dye-sensitized solar cells  

Science Journals Connector (OSTI)

Abstract We report a novel hierarchical homogeneous nanoarchitecture of TiO2 nanosheets branched TiO2 nanosheet arrays, which is formed directly on transparent conductive fluorine-doped tin oxide (FTO) glass substrate through a one-step facile hydrothermal reaction without the use of a seed layer. The hierarchical homogeneous nanoarchitecture is composed of long TiO2 nanosheet trunks grafted with a large number of TiO2 nanosheet branches, which is an effective structure to improve the charge transport with the increase of the specific surface area. Dye-sensitized solar cell (DSSC) based on TiO2 nanosheets branched TiO2 nanosheet arrays can achieve an outstanding power conversion efficiency of 6.66%, which is attributed to the specific performances such as higher specific surface area for adsorbing more dye molecules, superior light scattering capacity for boosting the light-harvesting efficiency and faster charge transport for efficient charge collection.

Bing-Xin Lei; Xiao-Feng Zheng; He-kang Qiao; Yi Li; Shu-Nuo Wang; Guo-Lei Huang; Zhen-Fan Sun

2014-01-01T23:59:59.000Z

74

TiO2-Coated Ultrathin SnO2 Nanosheets Used as Photoanodes for Dye-Sensitized Solar Cells with High Efficiency  

Science Journals Connector (OSTI)

According to the EIS model, the lifetime of electrons in the oxide film (?r) can be estimated from the maximum angular frequency (?max) of the impedance semicircle arc at middle frequencies in the Bode spectrum. ... Zn stannate can be an interesting mesoporous material for DSSC, provided dyes are used which have a higher position of the LUMO compared to that of N719, as it will permit attaining higher photovoltages without affecting the photocurrent. ... The power conversion efficiency (6.40%) of dye-sensitized solar cell based on hierarchical SnO2 octahedra which has a 23% increase compared with that of SnO2 nanoparticle photoelectrode (5.21%) is mainly ascribed to the efficient light scattering for the former, which is further confirmed by the UV/visible reflectance spectra. ...

Jun Xing; Wen Qi Fang; Zhen Li; Hua Gui Yang

2012-02-28T23:59:59.000Z

75

Facile method for synthesis of TiO{sub 2} film and its application in high efficiency dye sensitized-solar cell (DSSC)  

SciTech Connect (OSTI)

Dye-sensitized solar cells (DSSC) is a device which converts a solar energy to electrical energy. Different with semiconductor thin film based solar cell, DSSC utilize the sensitized-dye to absorb the photon and semiconductor such as titanium dioxide (TiO{sub 2}) and zinc oxide (ZnO) as a working electrode photoanode. In this report, the preparation of TiO{sub 2} film using a facile method of spray deposition and its application in DSSC have been presented. TiO{sub 2} photoanode was synthesized by growing the droplet of titanium tetraisopropoxide diluted in acid solution on the substrate of conductive glass flourine-doped tin oxide (FTO) with variation of precursor volume. DSSC was assemblied by sandwiching both of photoanode electrode and platinum counter electrode subsequently filling the area between these electrodes with triodine/iodine electrolite solution as redox pairs. The characterization of the as prepared DSSC using solar simulator (AM 1.5G, 100 mW/cm{sup 2}) and I-V source meter Keithley 2400 showed that the performance of DSSC was affected by the precursor volume.. The overall conversion efficiency of DSSC using the optimum TiO{sub 2} film was about 1.97% with the open circuit voltage (V{sub oc}) of 0.73 V, short circuit current density (J{sub sc}) of 4.61 mA and fill factor (FF) of 0.58.

Widiyandari, Hendri, E-mail: h.widiyandari@undip.ac.id; Gunawan, S. K.V.; Suseno, Jatmiko Endro [Department of Physics, Diponegoro University, Jl. Prof. H. Soedarto SH, Semarang, Central Java 50275 (Indonesia); Purwanto, Agus [Department of Chemical Engineering, Sebelas Maret University, Jl. Ir. Sutami No. 36 A, Surakarta (Indonesia); Diharjo, Kuncoro [Department of Mechanical Engineering, Sebelas Maret University, Jl. Ir. Sutami No. 36 A, Surakarta (Indonesia)

2014-02-24T23:59:59.000Z

76

Effects of hydrochloric acid treatment of TiO{sub 2} nanoparticles/nanofibers bilayer film on the photovoltaic properties of dye-sensitized solar cells  

SciTech Connect (OSTI)

Highlights: ? The TiO{sub 2} nanoparticles/TiO{sub 2} nanofibers bilayer film was fabricated for DSSC. ? The effects of HCl treated TiO{sub 2} on the performance of DSSC were investigated. ? The potential methods of improving conversion efficiency are suggested. - Abstract: The TiO{sub 2} nanoparticles/nanofibers bilayer film has been fabricated via spin coating and electrospinning followed by calcination. The TiO{sub 2} bilayer film with thickness of about 6.0 ?m is composed of anatase TiO{sub 2} phase. Dye-sensitized solar cells (DSSC) were assembled by hydrochloric acid (HCl) treated TiO{sub 2} film. The results of the photocurrent action spectra, electrochemical impedance spectroscopy (EIS), and I–V curves showed that each photovoltaic parameter of DSSC increased with the concentration of HCl increasing, and reached a maximum value and afterwards decreased. The maximum incident monochromatic photo-to-electron conversion efficiency (at 350 nm) and maximum overall conversion efficiency (?) of 0.05 M HCl treated TiO{sub 2} based DSSC were enhanced to 48.0% and 4.75%, which were respectively increased by 14% and 6.3% than those of DSSC based on untreated TiO{sub 2} film.

Song, Lixin; Du, Pingfan; Shao, Xiaoli; Cao, Houbao; Hui, Quan [Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018 (China); Xiong, Jie, E-mail: jxiong@zstu.edu.cn [Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018 (China)

2013-03-15T23:59:59.000Z

77

cis-Dichloro-bis(4,4‘-dicarboxy-2,2-bipyridine)osmium(II)-Modified Optically Transparent Electrodes:? Application as Cathodes in Stacked Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

cis-Dichloro-bis(4,4‘-dicarboxy-2,2-bipyridine)osmium(II)-Modified Optically Transparent Electrodes:? Application as Cathodes in Stacked Dye-Sensitized Solar Cells ... 4 Thus the electron can be thought of as moving (diffusing) randomly (i.e., toward or away from the collector electrode) from trap to trap. ... The horizontal axis for all of the plots is Ecell. ...

Michael J. Scott; Jeremy J. Nelson; Stefano Caramori; Carlo A. Bignozzi; C. Michael Elliott

2007-11-02T23:59:59.000Z

78

Cross-Linkable Molecular Hole-Transporting Semiconductor for Solid-State Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

† Department of Materials Science and Engineering and the Materials Research Center, the Argonne-Northwestern Solar Energy Research Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States ... (6) Despite enabling high-performance DSSCs, electrolyte redox shuttles have some disadvantages. ... Organic hole-transporting materials (HTMs) provide unparalleled advantages such as ready chemical and energetic tunability as well as significantly enhanced stability. ...

Nanjia Zhou; Byunghong Lee; Amod Timalsina; Peijun Guo; Xinge Yu; Tobin J. Marks; Antonio Facchetti; R. P. H. Chang

2014-03-28T23:59:59.000Z

79

Ruthenium(II) Complexes Bearing a Naphthalimide Fragment: A Modular Dye Platform for the Dye-Sensitized Solar Cell  

Science Journals Connector (OSTI)

Department of Chemistry and Centre for Advanced Solar Materials, University of Calgary, 2500 University Drive N.W., Calgary, Canada T2N 1N4 ... This work was financially supported by the Canadian Natural Science and Engineering Research Council (NSERC), Canada Research Chairs, Canadian Foundation for Innovation (CFI), Alberta Ingenuity, Alfred P. Sloan Foundation, and the Canada School of Energy and Environment (CSEE). ...

Dmitry V. Pogozhev; Máté J. Bezdek; Phil A. Schauer; Curtis P. Berlinguette

2013-02-25T23:59:59.000Z

80

Mesoporous TiO{sub 2} aggregate photoanode with high specific surface area and strong light scattering for dye-sensitized solar cells  

SciTech Connect (OSTI)

Phase-pure anatase TiO{sub 2} nanocrystallite aggregates synthesized by a continuous supercritical fluid process have been first used for fabricating mesoporous photoanodes of dye-sensitized solar cells (DSCs). Due to the small size (11 nm) of the TiO{sub 2} nanocrystallites in the aggregates, the mesoporous photoanode provides a high specific surface area, 80 m{sup 2}/g, which ensures high dye loading. At the same time, the submicrometer-sized aggregates endow the mesoporous photoanode with strong light scattering effect. Therefore, the light harvesting efficiency of the photoanode is increased. With an improved short-circuit current density, a high overall power conversion efficiency of 8.65% (100 mW/cm{sup 2}, AM 1.5) is achieved without additional scattering layers, 12% enhanced compared with the DSCs fabricated from commercial Degussa P25 with exactly the same procedures. In addition, this supercritical fluid process is scalable and rapid (less than one minute) for TiO{sub 2} aggregates synthesis, which will push the commercialization of DSCs in the future. - Graphical abstract: Due to the special morphology and structure, the photoanode of DSCs provides high specific surface area and strong light scattering at the same time, which results in high conversion efficiencies of the DSCs. Table of contents: Thanks to the synchronous realization of high specific surface area and strong light scattering, a high efficiency of 8.65% was achieved based on a novel mesoporous TiO{sub 2} aggregates photoanode for DSCs. Highlights: Black-Right-Pointing-Pointer The TiO{sub 2} aggregate photoanode provides a possible route for highly efficient DSCs. Black-Right-Pointing-Pointer Photoanode with high dye loading and light scattering is successfully fabricated. Black-Right-Pointing-Pointer TiO{sub 2} synthesized by a supercritical fluid process is first applied to DSCs. Black-Right-Pointing-Pointer The synthesis method and high efficiency will push the commercialization of DSCs.

Li, Chunhui; Luo, Yanhong; Guo, Xiaozhi; Li, Dongmei [Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)] [Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Mi, Jianli; So, Lasse; Hald, Peter [Center for Materials Crystallography, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, DK-8000 Aarhus (Denmark)] [Center for Materials Crystallography, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, DK-8000 Aarhus (Denmark); Meng, Qingbo, E-mail: qbmeng@iphy.ac.cn [Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)] [Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Iversen, Bo B., E-mail: bo@chem.au.dk [Center for Materials Crystallography, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, DK-8000 Aarhus (Denmark)

2012-12-15T23:59:59.000Z

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


81

Influences of alcoholic solvents on spray pyrolysis deposition of TiO{sub 2} blocking layer films for solid-state dye-sensitized solar cells  

SciTech Connect (OSTI)

Influences of alcoholic solvents for titanium diisopropoxide bis(acetylacetonate) (TPA) precursor solutions on the spray pyrolysis deposited TiO{sub 2} films and the photovoltaic performance of the solid-state dye-sensitized solar cells (SDSCs) using these TiO{sub 2} films as the blocking layers were investigated. Smooth TiO{sub 2} films were obtained by spray pyrolysis deposition of a TPA solution in isopropanol (IPA) at a relatively low temperature of 260 Degree-Sign C. On the other hand, when ethanol was used as solvent, the TiO{sub 2} films fabricated at the same temperature showed much rougher surfaces with many pinholes. Our results showed that ethanol reacts with TPA to form titanium diethoxide bis(acetylacetonate) (TEA), which requires a higher thermal decomposition temperature than that of TPA. SDSCs with TiO{sub 2} blocking layer films fabricated using a TPA solution in IPA showed higher power conversion efficiencies with smaller variations. - Graphical abstract: Alcoholic solvents used for the TiO{sub 2} precursor play a critical role in determining the surface morphology of blocking layers and thus the photovoltaic performance of the SDSCs. Highlights: Black-Right-Pointing-Pointer Solvent influences morphology of spray pyrolysis deposited TiO{sub 2} blocking layer. Black-Right-Pointing-Pointer Ethanol reacts with TPA, resulting poor quality of blocking layer. Black-Right-Pointing-Pointer Isopropanol is better than ethanol for obtaining smooth blocking layer. Black-Right-Pointing-Pointer SDSC with blocking layer made with isopropanol showed better performance.

Jiang, Changyun, E-mail: jiangc@imre.a-star.edu.sg [Institute of Materials Research and Engineering, A-STAR, 3 Research Link, 117602 Singapore (Singapore)] [Institute of Materials Research and Engineering, A-STAR, 3 Research Link, 117602 Singapore (Singapore); Koh, Wei Lin; Leung, Man Yin [Institute of Materials Research and Engineering, A-STAR, 3 Research Link, 117602 Singapore (Singapore)] [Institute of Materials Research and Engineering, A-STAR, 3 Research Link, 117602 Singapore (Singapore); Hong, Wei [Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Ave West ON, Waterloo, Canada N2L 3G1 (Canada)] [Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Ave West ON, Waterloo, Canada N2L 3G1 (Canada); Li, Yuning, E-mail: yuning.li@uwaterloo.ca [Institute of Materials Research and Engineering, A-STAR, 3 Research Link, 117602 Singapore (Singapore) [Institute of Materials Research and Engineering, A-STAR, 3 Research Link, 117602 Singapore (Singapore); Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Ave West ON, Waterloo, Canada N2L 3G1 (Canada); Zhang, Jie [Institute of Materials Research and Engineering, A-STAR, 3 Research Link, 117602 Singapore (Singapore)] [Institute of Materials Research and Engineering, A-STAR, 3 Research Link, 117602 Singapore (Singapore)

2013-02-15T23:59:59.000Z

82

NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL  

E-Print Network [OSTI]

solar cell The history of dye sensitization dates back to the photosensitization phenomenon by organic

Phuyal, Dibya

2012-01-01T23:59:59.000Z

83

Efficient ZnO Nanowire Solid-State Dye-Sensitized Solar Cells Using Organic Dyes and Core?shell Nanostructures  

Science Journals Connector (OSTI)

It is clear that the “insulating” and wide band gap shells of MgO and ZrO2 greatly enhance the photovolatic process. ... Studying the dye-sensitized electrode enables direct probing of the photoinduced electron transfer from the excited dye to the oxide, the initial step in the photovolatic process. ...

Natalie O. V. Plank; Ian Howard; Akshay Rao; Mark W. B. Wilson; Caterina Ducati; Rajaram Sakharam Mane; James S. Bendall; Rami R. M. Louca; Neil C. Greenham; Hidetoshi Miura; Richard H. Friend; Henry J. Snaith; Mark E. Welland

2009-09-30T23:59:59.000Z

84

Improving the efficiency of water splitting in dye-sensitized...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Improving the efficiency of water splitting in dye-sensitized solar cells by using a biomimetic electron transfer mediator Authors: Zhao, Y., Swierk, J. R., Megiatto, J. D.,...

85

Ultra-fast microwave-assisted hydrothermal synthesis of long vertically aligned ZnO nanowires for dye-sensitized solar cell application  

Science Journals Connector (OSTI)

Long vertically aligned ZnO nanowire arrays were synthesized using an ultra-fast microwave-assisted hydrothermal process. Using this method, we were able to grow ZnO nanowire arrays at an average growth rate as high as 200 nm min?1 for maximum microwave power level. This method does not suffer from the growth stoppage problem at long growth times that, according to our investigations, a normal microwave-assisted hydrothermal method suffers from. Longitudinal growth of the nanowire arrays was investigated as a function of microwave power level and growth time using cross-sectional FESEM images of the grown arrays. Effect of seed layer on the alignment of nanowires was also studied. X-ray diffraction analysis confirmed c-axis orientation and single-phase wurtzite structure of the nanowires. J–V curves of the fabricated ZnO nanowire-based mercurochrome-sensitized solar cells indicated that the short-circuit current density is increased with increasing the length of the nanowire array. According to the UV–vis spectra of the dyes detached from the cells, these increments were mainly attributed to the enlarged internal surface area and therefore dye loading enhancement in the lengthened nanowire arrays.

S M Mahpeykar; J Koohsorkhi; H Ghafoori-fard

2012-01-01T23:59:59.000Z

86

Surface Passivation of Nanoporous TiO2 via Atomic Layer Deposition of ZrO2 for Solid-State Dye-Sensitized Solar Cell Applications  

E-Print Network [OSTI]

electrolytes have been presented as a promising renewable energy source, achieving power conversion efficien and the Argonne-Northwestern Solar Energy Research Center, Northwestern UniVersity, EVanston, Illinois 60208Versidade Estadual Paulista, R. Prof. Francisco Degni s/n, 14800-900 Araraquara SP, Brazil ReceiVed: July 12, 2009

87

Self-Assembled Free-Standing Polypyrrole Nanotube Membrane as an Efficient FTO- and Pt-Free Counter Electrode for Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Photovolatic Performance Data of DSSCs Employing FTO/Pt and PPy Membrane CEs and EIS Data of the Symmetrical Cells Based on Pt/FTO and PPy CEs ...

Tao Peng; Weiwei Sun; Chengliang Huang; Wenjing Yu; Bobby Sebo; Zhigao Dai; Shishang Guo; Xing-Zhong Zhao

2013-12-17T23:59:59.000Z

88

Excitonic Solar Cells  

Science Journals Connector (OSTI)

Excitonic Solar Cells ... Existing types of solar cells may be divided into two distinct classes:? conventional solar cells, such as silicon p?n junctions, and excitonic solar cells, XSCs. ... Most organic-based solar cells, including dye-sensitized solar cells, DSSCs, fall into the category of XSCs. ...

Brian A. Gregg

2003-05-01T23:59:59.000Z

89

Hydrothermally Grown Upright-Standing Nanoporous Nanosheets of Iodine-Doped ZnO (ZnO:I) Nanocrystallites for a High-Efficiency Dye-Sensitized Solar Cell  

Science Journals Connector (OSTI)

Nanoporous nanosheets of ZnO and ZnO:I nanocrsytallites were washed with DI water and baked in air at 350 °C for 30 min in order to remove any residual organics and optimize solar cell performance. ... The proposed growth process is a simple and low-cost approach for the large scale production of nanomaterials with high conversion efficiency to fabricate DSSCs and hybrid solar cells. ... This method is also anticipated to be equally applicable to other semiconductor photoelectrodes in DSSCs and organic–inorganic hybrid solar cells. ...

Khalid Mahmood; Hyun Wook Kang; Seung Bin Park; Hyung Jin Sung

2013-03-19T23:59:59.000Z

90

Broadband dye-sensitized upconversion of near-infrared light  

E-Print Network [OSTI]

of the fundamental factors limiting the energy conversion efficiency of a single-junction solar cell to the Shockley by the dye-sensitized nanoparticles is dramatically enhanced (by a factor of 3,300) as a result of increased­ Queisser limit of 32% is the inability to absorb photons with energy less than the bandgap of the active

91

NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL  

E-Print Network [OSTI]

by Dye-Sensitized Photovoltaic cells. Inorganic Chemistry,by Dye-Sensitized Photovoltaic Cells. Inorganic ChemistryThe characteristics of a photovoltaic cell. Generally,

Phuyal, Dibya

2012-01-01T23:59:59.000Z

92

Solar Energy Conversion by Dye-Sensitized Photovoltaic Cells  

Science Journals Connector (OSTI)

The device converted more than 60% of the incident photons to electric current at the absorption maximum of the sensitizer near 470 nm, and the overall conversion efficiency in full sunlight was between 1 and 2%. ... This striking performance defies expectations because such large-area junctions should fare poorly in photovoltaic energy conversion in the presence of defects at the disordered surface, enhancing the recombination of photogenerated charge carriers. ... less than one exciton is initially generated per NC, gave ?2 excitons (carrier multiplication) when pump photon energies are >3 times the NC band gap energy. ...

Michael Grätzel

2005-09-26T23:59:59.000Z

93

Design of a photochemical water electrolysis system based on a W-typed dye-sensitized serial solar module for high hydrogen production  

Science Journals Connector (OSTI)

Abstract A W-typed dye-sensitized serial solar module (W-typed DSSM) was designed for hydrogen production from water electrolysis. The optimal thickness and width of the TiO2 electrode film were 12 ?m and 5 mm, and the optimal thickness of Pt counter electrode film was 4 nm, respectively. The photocurrent density, open circuit voltage, and fill factor were 2.13 mA cm?2, 3.51 V, and 0.61, respectively, for a serial module assembled from five unit cells, which resulted in an overall conversion efficiency of 4.56%. The obtained voltage increased with increasing number of unit cells connected, and was 3.51 V in the five column fabricated W-typed DSSM. 2.1 mL h?1 of hydrogen gas was emitted when a W-typed DSSM assembled from five columns was connected to carbon electrodes in a water electrolysis system. The rate of hydrogen evolution in the five columned W-typed DSSM was 0.00213 L h?1. Therefore, the actual light-hydrogen conversion was calculated to be 2.02%.

Byeong Sub Kwak; Jinho Chae; Misook Kang

2014-01-01T23:59:59.000Z

94

The Design of Organic Polymers and Small Molecules to Improve the Efficiency of Excitonic Solar Cells  

E-Print Network [OSTI]

J. The physics of solar cells; Imperial College Press,for organic polymer solar cells investigated to date. TheHarvesting in Dye-Sensitized Solar Cells Through the Use of

Armstrong, Paul Barber

2010-01-01T23:59:59.000Z

95

Spectral sensitization of nanocrystalline solar cells  

DOE Patents [OSTI]

This invention relates to dye sensitized polycrystalline photoelectrochemical solar cells for use in energy transduction from light to electricity. It concerns the utility of highly absorbing organic chromophores as sensitizers in such cells and the degree to which they may be utilized alone and in combination to produce an efficient photoelectrochemical cell, e.g., a regenerative solar cell.

Spitler, Mark T. (Concord, MA); Ehret, Anne (Malden, MA); Stuhl, Louis S. (Bedford, MA)

2002-01-01T23:59:59.000Z

96

Design of Zinc Oxide Based Solid-State Excitonic Solar Cell with Improved Efficiency  

E-Print Network [OSTI]

Excitonic photovoltaic devices, including organic, hybrid organic/inorganic, and dye-sensitized solar cells, are attractive alternatives to conventional inorganic solar cells due to their potential for low cost and low temperature solution...

Lee, Tao Hua

2012-02-14T23:59:59.000Z

97

Solar Energy Materials & Solar Cells 71 (2002) 261271 Photoelectric behavior of nanocrystalline TiO2  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 71 (2002) 261­271 Photoelectric behavior of nanocrystalline Ti 100101, People's Republic of China e Synchrotron Radiation Laboratory at Institute of High Energy Physics. A sandwich-type solar cell fabricated by this dye-sensitized nanocrystalline TiO2 film generated 6:1 mA cm�2

Huang, Yanyi

98

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

99

First principles DFT study of dye-sensitized CdS quantum dots  

SciTech Connect (OSTI)

Dye-sensitized quantum dots (QDs) are considered promising candidates for dye-sensitized solar cells. In order to maximize their efficiency, detailed theoretical studies are important. Here, we report a first principles density functional theory (DFT) investigation of experimentally realized dye - sensitized QD / ligand systems, viz., Cd{sub 16}S{sub 16}, capped with acetate molecules and a coumarin dye. The hybrid B3LYP functional and a 6?311+G(d,p)/LANL2dz basis set are used to study the geometric, energetic and electronic properties of these clusters. There is significant structural rearrangement in all the clusters studied - on the surface for the bare QD, and in the positions of the acetate / dye ligands for the ligated QDs. The density of states (DOS) of the bare QD shows states in the band gap, which disappear on surface passivation with the acetate molecules. Interestingly, in the dye-sensitised QD, the HOMO is found to be localized mainly on the dye molecule, while the LUMO is on the QD, as required for photo-induced electron injection from the dye to the QD.

Jain, Kalpna; Singh, Kh. S. [Department of Physics, D. J. College, Baraut -250611, U.P. (India); Kishor, Shyam, E-mail: shyam387@gmail.com [Department of Chemistry, J. V. College, Baraut -250611, U.P. (India); Josefesson, Ida; Odelius, Michael [Fysikum, Albanova University Center, Stockholm University, S-106 91 Stockholm (Sweden); Ramaniah, Lavanya M. [High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai-400085 (India)

2014-04-24T23:59:59.000Z

100

A novel hierarchical Pt- and FTO-free counter electrode for dye-sensitized solar cell  

Science Journals Connector (OSTI)

Figure 3 presents the photocurrent density-voltage (J-V) curves of DSSCs using PEDOT:PSS/FTO CE, TiO2...-PEDOT:PSS/PEDOT:PSS/glass CE, and Pt/FTO CE, respectively, and the related photovolatic parameters are show...

Xing Zhao; Meicheng Li; Dandan Song; Peng Cui; Zhirong Zhang…

2014-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Silicon-Naphthalo/Phthalocyanine-Hybrid Sensitizer for Efficient Red Response in Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

The intense green color and relative transparency in the green portion of the spectrum may also make this dye an interesting compound for efficient semitransparent building integrated photovoltaics. ...

Bogyu Lim; George Y. Margulis; Jun-Ho Yum; Eva L. Unger; Brian E. Hardin; Michael Grätzel; Michael D. McGehee; Alan Sellinger

2013-02-05T23:59:59.000Z

102

An expression for the bridge-mediated electron transfer rate in dye-sensitized solar cells  

Science Journals Connector (OSTI)

...denote with m the final electronic state where there is no excess electron in the semiconductor's conduction band and a neutral...51 Bai, Y , J Zhang, Y Wang, M Zhang, and P Wang. 2011 Lithium-modulated conduction band edge shifts and charge-transfer...

2014-01-01T23:59:59.000Z

103

Plasmonic Enhancement of Dye-Sensitized Solar Cells Using Core-Shell-Shell Nanostructures  

E-Print Network [OSTI]

are dependent on efficient harnessing of light for conversion to electricity or chemical fuel, and this has charges into SiO2, which reduces the potential effectiveness of the plasmonic nanoparticle. This issue- particles that does not also provide electrical insulation opens up the metal core to charging effects

104

Light-trapping in dye-sensitized solar cells Stephen Foster* and Sajeev John  

E-Print Network [OSTI]

and absorption enhancement, but offers improved electrical transport through the nanotube walls. The nanotube of magnitude. Harnessing this energy in a cost effective manner requires the use of more efficient and less. Numerical results suggest the potential for efficiencies well beyond the current record for DSSCs. 1

John, Sajeev

105

Plasmonic Dye-Sensitized Solar Cells Using Core?Shell Metal?Insulator Nanoparticles  

Science Journals Connector (OSTI)

Our spectroscopic investigation indicates that plasmon-enhanced photocarrier generation competes well with plasmons oscillation damping with in the first tens of femtoseconds following light absorption. ... The spectral response was measured using a 250 W xenon lamp filtered by a Princeton Instruments monochromator coupled to a Keithley 2636, both controlled by Labview and calibrated against a UV enhanced silicon reference diode. ... Probably in the same way as a laser generates stimulated emission of coherent photons, a spaser' could generate stimulated emission of surface plasmons (oscillations of free electrons in metallic nanostructures) in resonating metallic nanostructures adjacent to a gain medium. ...

Michael D. Brown; Teeraporn Suteewong; R. Sai Santosh Kumar; Valerio D’Innocenzo; Annamaria Petrozza; Michael M. Lee; Ulrich Wiesner; Henry J. Snaith

2010-12-31T23:59:59.000Z

106

Dye-sensitized solar cell with a titanium-oxide-modified carbon nanotube transparent electrode  

E-Print Network [OSTI]

matched to InP are widely used for the fabrication of optoelectronic devices [1­3]. Many high speed optoelectronic devices rely on the creation of an electrical p­n junction using p-type InP with high carrier

Demir, Hilmi Volkan

107

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

108

Antimony-Doped Tin Oxide Aerogels as Porous Electron Collectors for Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Figure 3. Characterization of the aerogel films: (a) Thickness of films and (b) dye uptake measurement of D149 desorbed in DMF as a function of Sb doping in ATO aerogels and TiO2 coatings by ALD. ... Figure 4. SEM top views of a 15%Sb ATO aerogel without TiO2 coating at different magnifications (a,b) and of the aerogel with (c) 150 and (d,e) 300 cycles of TiO2; cross-section (f) of the sample shown in panel c. ... However, it was found that at 700 ALD cycles a clear peak for anatase TiO2 emerges, a phenomenon not observed for SnO2 samples coated by a similar ALD process (but using TiCl4 as a precursor) even at very thick TiO2 coatings. ...

Juan Pablo Correa Baena; Alexander G. Agrios

2014-04-21T23:59:59.000Z

109

'Nano'tubes, Surface Area & NanoSolar Cells  

K-12 Energy Lesson Plans and Activities Web site (EERE)

This unit takes students through several introductory lessons designed to gain a better understanding of the 'nano' scale as it relates to the creation of a (dye-sensitized) solar cell (DSSC). The introductory lessons guide students through activities covering volume, surface area and density and exploration of the relationship between these factors. The unit culminates with students building a Gratzel cell, a solar cell employing a layer of nanospheres of TiO2 as the semiconductor and blackberry juice as the light absorber in a non-Si-based solar cell. Students are able to build a small solar cell and test its efficiency.

110

The Importance of Perovskite Pore Filling in Organometal Mixed Halide Sensitized TiO2-Based Solar Cells  

Science Journals Connector (OSTI)

(3, 4) Solid-state dye-sensitized solar cells (ssDSSCs) have, however, fallen short of the predicted performances, reaching a maximum of 7.2% power conversion efficiency when using custom-synthesized light-absorbing dyes and specially designed dopants to improve the charge transport in the hole transporting layer. ... Snaith, H. J.Estimating the Maximum Attainable Efficiency in Dye-Sensitized Solar Cells Adv. ... and optical losses in the dye-sensitized system are reviewed, and the main losses in potential from the conversion of an absorbed photon at the optical bandgap of the sensitizer to the open-circuit voltage generated by the solar cell are specifically highlighted. ...

Tomas Leijtens; Beat Lauber; Giles E. Eperon; Samuel D. Stranks; Henry J. Snaith

2014-03-10T23:59:59.000Z

111

Improved Performance of CuInS2 Quantum Dot-Sensitized Solar Cells Based on a Multilayered Architecture  

Science Journals Connector (OSTI)

Dye-sensitized solar cells (DSSCs) are a promising renewable solar energy source because of their low cost, high durability, and low environmental impact. ... One of the important factors limiting solar-cell efficiency is that incident photons generate one electron-hole pair, irresp. of the photon energy. ... Among the third-generation photovoltaic devices, much attention is being paid to the so-called Quantum Dot sensitized Solar Cells (QDSCs). ...

Jia-Yaw Chang; Jie-Mo Lin; Li-Fong Su; Chia-Fu Chang

2013-08-12T23:59:59.000Z

112

Excited State Dynamics of Two New Ru(II) Cyclometallated Dyes: Relation to Cells for Solar Energy Conversion and Comparison to  

E-Print Network [OSTI]

Excited State Dynamics of Two New Ru(II) Cyclometallated Dyes: Relation to Cells for Solar Energy, are reported. Related complexes have been used as efficient dyes in dye- sensitized solar cells (DSSCs of ruthenium dyes used in DSSCs to lower energies, it is evident from this work, that for cyclometallated phpy

Turro, Claudia

113

Synthesis of CdSe quantum dots for quantum dot sensitized solar cell  

SciTech Connect (OSTI)

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

114

Electron Transfer Dynamics in Efficient Molecular Solar Cells  

SciTech Connect (OSTI)

This research provided new mechanistic insights into surface mediated photochemical processes relevant to solar energy conversion. In this past three years our research has focused on oxidation photo-redox chemistry and on the role surface electric fields play on basic spectroscopic properties of molecular-semiconductor interfaces. Although this research as purely fundamental science, the results and their interpretation have relevance to applications in dye sensitized and photogalvanic solar cells as well as in the storage of solar energy in the form of chemical bonds.

Meyer, Gerald John

2014-10-01T23:59:59.000Z

115

Efficiency Limit of Molecular Solar Thermal Energy Collecting Devices  

Science Journals Connector (OSTI)

Maximum efficiencies and potential temperature gradients are estimated using a number of basic assumptions on desired storage lifetimes and energy losses. ... Snaith, H. J.Estimating the maximum attainable efficiency in dye-sensitized solar cells Adv. ... and optical losses in the dye-sensitized system are reviewed, and the main losses in potential from the conversion of an absorbed photon at the optical bandgap of the sensitizer to the open-circuit voltage generated by the solar cell are specifically highlighted. ...

Karl Börjesson; Anders Lennartson; Kasper Moth-Poulsen

2013-04-12T23:59:59.000Z

116

N-Methyl-N-Allylpyrrolidinium Based Ionic Liquids for Solvent-Free Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

We prepared four new ionic liquids consisting of N-methyl-N-allylpyrrolidinium cation in conjunction with anions including iodide, nitrate, thiocyanate, and dicyanamide, respectively, and measured their physical properties of density, viscosity, and ...

Ning Cai; Jing Zhang; Difei Zhou; Zhihui Yi; Jin Guo; Peng Wang

2009-02-16T23:59:59.000Z

117

Micrometer-Sized Fluorine Doped Tin Oxide As Fast Electron Collector for Enhanced Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

And when the cycle is 2, the photovolatic characteristics of the device are much better with short-circuit current density Jsc, open circuit voltage Voc, and FF of 13.8 mA/cm2, 0.67 V, and 52%, respectively. ...

Xiao Rui Cui; Ye Feng Wang; Zhao Li; Lu Zhou; Fei Gao; Jing Hui Zeng

2014-09-16T23:59:59.000Z

118

Deposition of hole-transport materials in solid-state dye-sensitized solar cells by doctor-blading  

E-Print Network [OSTI]

Lausanne, 1015 Lausanne, Switzerland c Konarka Technologies Inc., 116 John Street, Lowell, MA 01852, USA efficiencies over 5% [10] and have exhibited good stability under elevated- temperature light-soaking [11

McGehee, Michael

119

A Novel TiO2 Tape for Fabricating Dye-Sensitized Solar Cells on Universal Conductive Substrates  

Science Journals Connector (OSTI)

Flexible DSSC substrates are especially attractive for Building Integrated Photovoltaics (BIPV). ...

Jie Shen; Rui Cheng; Yiwei Chen; Xiaohong Chen; Zhuo Sun; Sumei Huang

2013-12-02T23:59:59.000Z

120

Cobalt(II/III) Redox Electrolyte in ZnO Nanowire-Based Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Thus the present study opens new opportunities to improve energy conversion efficiency in ZnO-based DSCs. ... This allows the rational design and development of hierarchical ZnO nanostructures able to simultaneously optimize charge carrier path and dye loading. ... Finally, a series of Co(II)/Co(III) complexes are systematically investigated to gauge the impact of ligand substitution and of metal coordination (tris-bidentate vs. bis-tridentate) on the HS/LS energy difference and reorganization energies. ...

Jiandong Fan; Yan Hao; Andreu Cabot; Erik M. J. Johansson; Gerrit Boschloo; Anders Hagfeldt

2013-02-28T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Biomimetic Dye Molecules for Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

122

Biomimetic Dye Molecules for Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

123

Biomimetic Dye Molecules for Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

124

Biomimetic Dye Molecules for Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

125

Biomimetic Dye Molecules for Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

126

Biomimetic Dye Molecules for Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biomimetic Dye Molecules for Solar Cells Print Biomimetic Dye Molecules for Solar Cells Print Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce electricity that can be converted efficiently into other kinds of energy, they are currently too costly to compete with traditional (polluting) energy sources. The most cost-effective solar cells are not high-end, high-efficiency single-crystal devices, but rather low-end cells based on organic molecules or conducting polymers. Vital information for making organic solar cells more competitive for widespread implementation was obtained using near-edge x-ray absorption fine structure (NEXAFS) spectroscopy performed at ALS Beamline 8.0.1. The relevant energy levels of biomimetic dye molecules were mapped out systematically by determining their unoccupied molecular orbitals and their orientation. Organic molecules in dye-sensitized solar cells exhibit great potential to increase the efficiency and reduce the cost of photovoltaic power generation by allowing a wide variety of chemical modifications and combinations with inorganic nanocrystals.

127

Nanoscale Charge Transport in Excitonic Solar Cells  

SciTech Connect (OSTI)

Excitonic solar cells, including all-organic, hybrid organic-inorganic and dye-sensitized solar cells (DSSCs), offer strong potential for inexpensive and large-area solar energy conversion. Unlike traditional inorganic semiconductor solar cells, where all the charge generation and collection processes are well understood, these excitonic solar cells contain extremely disordered structures with complex interfaces which results in large variations in nanoscale electronic properties and has a strong influence on carrier generation, transport, dissociation and collection. Detailed understanding of these processes is important for fabrication of highly efficient solar cells. Efforts to improve efficiency are underway at a large number of research groups throughout the world focused on inorganic and organic semiconductors, photonics, photophysics, charge transport, nanoscience, ultrafast spectroscopy, photonics, semiconductor processing, device physics, device structures, interface structure etc. Rapid progress in this multidisciplinary area requires strong synergetic efforts among researchers from diverse backgrounds. Such effort can lead to novel methods for development of new materials with improved photon harvesting and interfacial treatments for improved carrier transport, process optimization to yield ordered nanoscale morphologies with well defined electronic structures.

Venkat Bommisetty, South Dakota State University

2011-06-23T23:59:59.000Z

128

Photosynthetic reaction center-functionalized electrodes for photo-bioelectrochemical cells  

Science Journals Connector (OSTI)

A recent promising application of the isolated PSI component is its integration in dye-sensitized solar cells (DSSCs). DSSCs have been highlighted as an emerging technology for alternative energy production (G...

Omer Yehezkeli; Ran Tel-Vered; Dorit Michaeli; Itamar Willner…

2014-05-01T23:59:59.000Z

129

PHOTOVOLTAIC PROPERTIES OF AU-MEROCYANINE-TiO2 SANDWICH CELLS. I. DARK ELECTRICAL PROPERTIES AND TRANSIENT EFFECT  

E-Print Network [OSTI]

used in making the photovoltaic cells. Figure 2. Diagram oforganic compounds in photovoltaic cells. It lies more in thecalled a dye-sensitized photovoltaic cell. Dye sensitization

Skotheim, T.

2010-01-01T23:59:59.000Z

130

Engineering Schottky Contacts in Open-Air Fabricated Heterojunction Solar Cells to Enable High Performance and Ohmic Charge Transport  

E-Print Network [OSTI]

Te Solar Cells. Thin Solid Films 2006, 510, 320?324. (2) Chuang, C.-H. M.; Brown, P. R.; Bulovic,? V.; Bawendi, M. G. Improved Performance and Stability in Quantum Dot Solar Cells through Band Alignment Engineering. Nat. Mater. 2014, 13, 796?801. (3) Marin... . Mater. 2010, 22, E254?E258. (10) Sarkar, K.; Braden, E. V.; Pogorzalek, S.; Yu, S.; Roth, S. V.; Mu?ller-Buschbaum, P. Monitoring Structural Dynamics of in Situ Spray-Deposited Zinc Oxide Films for Application in Dye-Sensitized Solar Cells. Chem...

Hoye, Robert L. Z.; Heffernan, Shane; Ievskaya, Yulia; Sadhanala, Aditya; Flewitt, Andrew; Friend, Richard H.; MacManus-Driscol, Judith L.; Musselman, Kevin P.

2014-11-24T23:59:59.000Z

131

Photoelectrochemical solar cells  

Science Journals Connector (OSTI)

Photoelectrochemical solar cells ... Plastic Solar Cells: A Multidisciplinary Field To Construct Chemical Concepts from Current Research ... Plastic Solar Cells: A Multidisciplinary Field To Construct Chemical Concepts from Current Research ...

John T. McDevitt

1984-01-01T23:59:59.000Z

132

Nanocrystal Solar Cells  

E-Print Network [OSTI]

Nov, 2005). Chapter 4 Hybrid solar cells with 3-dimensional5 All-inorganic nanocrystal solar cells 5.1 Introduction Inoperation of organic based solar cells and distinguish them

Gur, Ilan

2006-01-01T23:59:59.000Z

133

Nanocrystal Solar Cells  

E-Print Network [OSTI]

inorganic nanocrystal solar cells 5.1 Introduction In recentoperation of organic based solar cells and distinguish themThe organic donor-acceptor solar cell relies on a type II

Gur, Ilan

2006-01-01T23:59:59.000Z

134

Wide bandgap n-type and p-type semiconductor porous junction devices as photovoltaic cells This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network [OSTI]

. Introduction Solar cells incorporating organic materials are interesting alternatives to conventional silicon solar cells because of their low production cost. Significant breakthroughs in solar cell performances artificial photovoltaic device. In a dye-sensitized solar cell the absorbing dye molecules lie at the large

135

Effect of TiO2 nanoparticle-accumulated bilayer photoelectrode and condenser lens-assisted solar concentrator on light harvesting in dye-sensitized solar cells  

Science Journals Connector (OSTI)

In order to qualitatively verify the increase of power output by using the T25/T240-DL©-based DSSCs, we tried to operate a small propeller installed on an electric motor (rated voltage = 0.6 V, rated current = 12...

Kook Joo Moon; Sun Woo Lee; Yong Hun Lee; Ji Hoon Kim…

2013-06-01T23:59:59.000Z

136

Carrier Localization and Cooling in Dye-Sensitized Nanocrystalline Titanium Dioxide Gordon M. Turner, Matthew C. Beard, and Charles A. Schmuttenmaer*  

E-Print Network [OSTI]

dem- onstrated solar-to-electric energy conversion efficiencies of 10.4%.2 The TiO2 nanoparticles#12;Carrier Localization and Cooling in Dye-Sensitized Nanocrystalline Titanium Dioxide Gordon M-induced carrier localization and/or backscattering of the photogenerated carriers. In addition, the carriers

137

NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL  

E-Print Network [OSTI]

in all thin-film solar cell technologies is that absorbancecells. These emerging solar cell technologies have undergonethe various solar cell technologies and their progress as

Phuyal, Dibya

2012-01-01T23:59:59.000Z

138

Structure of All-Polymer Solar Cells Impedes Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Structure of All-Polymer Solar Structure of All-Polymer Solar Cells Impedes Efficiency Structure of All-Polymer Solar Cells Impedes Efficiency Print Wednesday, 27 October 2010 00:00 Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

139

Characterization Studies of Materials and Devices used for Electrochemical Energy Storage  

E-Print Network [OSTI]

technologies we cover include dye sensitized solar cells,and storage technologies. Dye Sensitized Solar Cells The

Membreno, Daniel Eduardo

2014-01-01T23:59:59.000Z

140

Semitransparent organic solar cells  

Science Journals Connector (OSTI)

The organic solar cell technology has attracted great interests due to ... low cost solution process capability. Bulk heterojunction organic solar cells offer a potentially much cheaper alternative way to harness...

Furong Zhu

2014-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Structure of All-Polymer Solar Cells Impedes Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

142

Structure of All-Polymer Solar Cells Impedes Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

143

Structure of All-Polymer Solar Cells Impedes Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

144

Structure of All-Polymer Solar Cells Impedes Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

145

Structure of All-Polymer Solar Cells Impedes Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Structure of All-Polymer Solar Cells Impedes Efficiency Print Structure of All-Polymer Solar Cells Impedes Efficiency Print Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic materials and are increasingly popular because they are both potentially cheaper to make than those currently in use and can be "painted" or printed onto a variety of surfaces, including flexible films made from the same material as most soda bottles. A large community is exploring a number of promising material combinations (polymer/fullerene, polymer/inorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure, operation, and limitations. A team of researchers from North Carolina State University and the UK has now found, through microscopy and resonant scattering and reflectivity studies at ALS Beamlines 6.3.2 and 5.3.2, that the low rate of energy conversion in model all-polymer solar cells is caused by domains that are too large and interfaces that are not sharp enough. This insight will lead to new approaches to all-polymer device technology that will help realize the intrinsic potential of these materials.

146

Impact of Molecular Charge-Transfer States on Photocurrent Generation in Solid State Dye-Sensitized Solar Cells Employing Low-Band-Gap Dyes  

Science Journals Connector (OSTI)

(b) Photovolatic action spectra for TiO2- and SnO2-based DSSC incorporating ID504 as the sensitizer. ...

Sai Santosh Kumar Raavi; Pablo Docampo; Christian Wehrenfennig; Marcelo J. P. Alcocer; Golnaz Sadoughi; Laura M. Herz; Henry J. Snaith; Annamaria Petrozza

2014-05-16T23:59:59.000Z

147

Fluorous Molecules for Dye-Sensitized Solar Cells: Synthesis and Photoelectrochemistry of Unsymmetrical Zinc Phthalocyanine Sensitizers with Bulky Fluorophilic Donor Groups  

Science Journals Connector (OSTI)

In addition, the pleasant blue-green color of photovoltaic devices containing Pcs is especially attractive for building integrated photovoltaics (BIPV) applications such as photovoltaic windows. ...

Gianluca Pozzi; Silvio Quici; Maria Concetta Raffo; Carlo Alberto Bignozzi; Stefano Caramori; Michele Orlandi

2011-02-16T23:59:59.000Z

148

Triple Helix innovation in China’s dye-sensitized solar cell industry: hybrid methods with semantic TRIZ and technology roadmapping  

Science Journals Connector (OSTI)

In recent years, the Triple Helix model has identified feasible approaches to measuring relations among universities, industries, and governments. Results have been extended to different databases, regions, and p...

Yi Zhang; Xiao Zhou; Alan L. Porter; Jose M. Vicente Gomila; An Yan

2014-04-01T23:59:59.000Z

149

Chlorophyll-Derived, Cyclic Tetrapyrrole-Based Purpurins as Efficient Near-Infrared-Absorption Donor Materials for Dye-Sensitized and Organic Solar Cells  

Science Journals Connector (OSTI)

Near-infrared-absorbing chlorophyll derivatives, namely purpurin-18 methyl esters, with (c-H2P and c-ZnP) and without (H2P and ZnP) carboxyl group at the C3 position of chlorin macrocycle have been studied in eit...

Taojun Zhuang; Yuwei Wang; Xiao-Feng Wang

2014-01-01T23:59:59.000Z

150

Tunable Localized Surface Plasmon-Enabled Broadband Light-Harvesting Enhancement for High-Efficiency Panchromatic Dye-Sensitized Solar Cells  

E-Print Network [OSTI]

In photovoltaic devices, light harvesting (LH) and carrier collection have opposite relations with the thickness of the photoactive layer, which imposes a fundamental compromise for the power conversion efficiency (PCE). ...

Dang, Xiangnan

151

Fast Transporting ZnO–TiO2 Coaxial Photoanodes for Dye-Sensitized Solar Cells Based on ALD-Modified SiO2 Aerogel Frameworks  

Science Journals Connector (OSTI)

To circumvent this problem, we have explored here the idea of conformally coating the silica–ZnO aerogel structures with very thin layers of more robust metal oxides such as Al2O3, ZrO2, or TiO2 to create doubly coaxial structures. ... J–V characteristics of DSSCs featuring 25 ?m thick aerogel-based SiO2–ZnO films compared to similar films with ca. 3 and 4 Å coatings of Al2O3 and TiO2, respectively: (a) light performance; (b) dark performance. ... Figure 7. Plot showing the effects of increased layers of TiO2 coats over 6 nm ZnO-coated silica aerogels with respect to charge lifetimes from OCVD measurements. ...

Vennesa O. Williams; Nak Cheon Jeong; Chaiya Prasittichai; Omar K. Farha; Michael J. Pellin; Joseph T. Hupp

2012-06-21T23:59:59.000Z

152

Cascade Organic Solar Cells  

Science Journals Connector (OSTI)

Cascade Organic Solar Cells ... Multiple factors control the efficiency of organic solar cells, making it difficult to use single donor or acceptor materials to balance the, often opposing, material properties required to optimize device performance. ... We demonstrate planar organic solar cells consisting of a series of complementary donor materials with cascading exciton energies, incorporated in the following structure: glass/indium-tin-oxide/donor cascade/C60/bathocuproine/Al. ...

Cody W. Schlenker; Vincent S. Barlier; Stephanie W. Chin; Matthew T. Whited; R. Eric McAnally; Stephen R. Forrest; Mark E. Thompson

2011-09-02T23:59:59.000Z

153

Heterojunction solar cell  

DOE Patents [OSTI]

A high-efficiency single heterojunction solar cell is described wherein a thin emitter layer (preferably Ga[sub 0.52]In[sub 0.48]P) forms a heterojunction with a GaAs absorber layer. The conversion efficiency of the solar cell is at least 25.7%. The solar cell preferably includes a passivating layer between the substrate and the absorber layer. An anti-reflection coating is preferably disposed over the emitter layer. 1 fig.

Olson, J.M.

1994-08-30T23:59:59.000Z

154

A chlorophyll solar cell  

Science Journals Connector (OSTI)

A simple chlorophyll solar cell has been designed built and tested. A voltage output versus time curve has also been obtained. (AIP)

J. Christopher Ludlow

1982-01-01T23:59:59.000Z

155

Quantum Junction Solar Cells  

Science Journals Connector (OSTI)

Quantum Junction Solar Cells ... § Department of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, Ontario, M5S 3G4, Canada ...

Jiang Tang; Huan Liu; David Zhitomirsky; Sjoerd Hoogland; Xihua Wang; Melissa Furukawa; Larissa Levina; Edward H. Sargent

2012-08-10T23:59:59.000Z

156

Radiative cooling of solar cells  

Science Journals Connector (OSTI)

Standard solar cells heat up under sunlight. The resulting increased temperature of the solar cell has adverse consequences on both its efficiency and its reliability. We introduce a...

Zhu, Linxiao; Raman, Aaswath; Wang, Ken Xingze; Anoma, Marc Abou; Fan, Shanhui

2014-01-01T23:59:59.000Z

157

Thermal Management of Solar Cells  

E-Print Network [OSTI]

D. Mills, "Cooling of photovoltaic cells under concentratedelectric performance of a photovoltaic cells by cooling andSolar Cell A photovoltaic cell is a semiconductor that

Saadah, Mohammed Ahmed

2013-01-01T23:59:59.000Z

158

Solar cell array interconnects  

DOE Patents [OSTI]

Electrical interconnects are disclosed for solar cells or other electronic components using a silver-silicone paste or a lead-tin (Pb-Sn) no-clean fluxless solder cream, whereby the high breakage of thin (<6 mil thick) solar cells using conventional solder interconnect is eliminated. The interconnects of this invention employs copper strips which are secured to the solar cells by a silver-silicone conductive paste which can be used at room temperature, or by a Pb-Sn solder cream which eliminates undesired residue on the active surfaces of the solar cells. Electrical testing using the interconnects of this invention has shown that no degradation of the interconnects developed under high current testing, while providing a very low contact resistance value. 4 figs.

Carey, P.G.; Thompson, J.B.; Colella, N.J.; Williams, K.A.

1995-11-14T23:59:59.000Z

159

Organic solar cell optimizations  

Science Journals Connector (OSTI)

This paper presents recent experimental and theoretical approaches for optimizing organic solar cell efficiencies in both space and energy/time...D/A...) blend film, a corresponding –DBAB- block copolymer film ex...

S. Sun; Z. Fan; Y. Wang; J. Haliburton

2005-03-01T23:59:59.000Z

160

Photovoltaic solar cell  

DOE Patents [OSTI]

A photovoltaic solar cell for generating electricity from sunlight is disclosed. The photovoltaic solar cell comprises a plurality of spaced-apart point contact junctions formed in a semiconductor body to receive the sunlight and generate the electicity therefrom, the plurality of spaced-apart point contact junctions having a first plurality of regions having a first doping type and a second plurality of regions having a second doping type. In addition, the photovoltaic solar cell comprises a first electrical contact electrically connected to each of the first plurality of regions and a second electrical contact electrically connected to each of the second plurality of regions, as well as a passivation layer covering major surfaces and sidewalls of the photovoltaic solar cell.

Nielson, Gregory N; Okandan, Murat; Cruz-Campa, Jose Luis; Resnick, Paul J

2013-11-26T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Photovoltaic solar cell  

DOE Patents [OSTI]

A photovoltaic solar cell for generating electricity from sunlight is disclosed. The photovoltaic solar cell comprises a plurality of spaced-apart point contact junctions formed in a semiconductor body to receive the sunlight and generate the electricity therefrom, the plurality of spaced-apart point contact junctions having a first plurality of regions having a first doping type and a second plurality of regions having a second doping type. In addition, the photovoltaic solar cell comprises a first electrical contact electrically connected to each of the first plurality of regions and a second electrical contact electrically connected to each of the second plurality of regions, as well as a passivation layer covering major surfaces and sidewalls of the photovoltaic solar cell.

Nielson, Gregory N; Cruz-Campa, Jose Luis; Okandan, Murat; Resnick, Paul J

2014-05-20T23:59:59.000Z

162

Thin silicon solar cells  

SciTech Connect (OSTI)

The silicon-film design achieves high performance by using a dun silicon layer and incorporating light trapping. Optimally designed thin crystalline solar cells (<50 microns thick) have performance advantages over conventional thick devices. The high-performance silicon-film design employs a metallurgical barrier between the low-cost substrate and the thin silicon layer. Light trapping properties of silicon-film on ceramic solar cells are presented and analyzed. Recent advances in process development are described here.

Hall, R.B.; Bacon, C.; DiReda, V.; Ford, D.H.; Ingram, A.E.; Cotter, J.; Hughes-Lampros, T.; Rand, J.A.; Ruffins, T.R.; Barnett, A.M. [Astro Power Inc., Solar Park, Newark, DE (United States)

1992-12-01T23:59:59.000Z

163

Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical Investigation Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical Investigation Print Wednesday,...

164

Visible Light Water Splitting Using Dye-Sensitized Oxide Semiconductors  

E-Print Network [OSTI]

- ical energy in the form of fuels. Hydrogen is a key solar fuel because it can be used directly. This Account describes our approach to two problems in solar water splitting: the organization of molecules in photochemistry.1,2 Efficient photocatalytic water-splitting systems could have practical value for solar energy

165

EE580 Solar Cells Todd J. Kaiser  

E-Print Network [OSTI]

7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 06 · Solar Cell Materials & Structures 1Montana State University: Solar Cells Lecture 6: Solar Cells Solar Cell Technologies · A) Crystalline Silicon · B) Thin Film · C) Group III-IV Cells 2Montana State University: Solar Cells Lecture 6: Solar

Kaiser, Todd J.

166

Broad spectrum solar cell  

DOE Patents [OSTI]

An alloy having a large band gap range is used in a multijunction solar cell to enhance utilization of the solar energy spectrum. In one embodiment, the alloy is In.sub.1-xGa.sub.xN having an energy bandgap range of approximately 0.7 eV to 3.4 eV, providing a good match to the solar energy spectrum. Multiple junctions having different bandgaps are stacked to form a solar cell. Each junction may have different bandgaps (realized by varying the alloy composition), and therefore be responsive to different parts of the spectrum. The junctions are stacked in such a manner that some bands of light pass through upper junctions to lower junctions that are responsive to such bands.

Walukiewicz, Wladyslaw (Kensington, CA); Yu, Kin Man (Lafayette, CA); Wu, Junqiao (Richmond, CA); Schaff, William J. (Ithaca, NY)

2007-05-15T23:59:59.000Z

167

NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL  

E-Print Network [OSTI]

is mostly thin- film solar technology, such as CdTe and CuInimportant. Thin film solar technology such as CIGS (Copper,in all thin-film solar cell technologies is that absorbance

Phuyal, Dibya

2012-01-01T23:59:59.000Z

168

Monolithic tandem solar cell  

SciTech Connect (OSTI)

It is an object of the invention to provide a monolithic tandem photovoltaic solar cell which is highly radiation resistant and efficient; in which the energy bandgap of the lower subcell can be tailored for specific applications; solar cell comprising layers of InP and GaInAsP (or GaInAs), where said photovoltaic cell is useful, for example, in space power applications; having an improved power-to-mass ratio; in which subcells are lattice-matches; and are both two terminal and three terminal monolithic tandem photovoltaic solar cells. To achieve the foregoing and other objects and in accordance with the purpose of the present invention, as embodied and broadly described herein, the monolithic tandem photovoltaic solar cell may comprise; (a) an InP substrate having an upper surface; (b) a first photoactive subcell on the upper surface of the InP substrate; wherein the first subcell comprises GaInAs (which could include GaInAsP) and includes a homojunction; and (c) a second photoactive subcell on the first subcell; wherein the second subcell comprises InP and includes a homojunction. The cell is described in detail. 5 figs., 2 tabs.

Wanlass, M.W.

1989-11-03T23:59:59.000Z

169

Monolithic tandem solar cell  

SciTech Connect (OSTI)

This patent describes a single-crystal, monolithic, tandem, photovoltaic solar cell which includes an InP substrate having an upper and lower surfaces, a first photoactive subcell on the upper surface of the InP substrate, and a second photoactive subcell on the first subcell. The first photovoltaic subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched. The solar cell can be provided as a two- terminal device or a three-terminal device.

Wanlass, M.W.

1991-05-28T23:59:59.000Z

170

Meteorological Effects on Solar Cells  

Science Journals Connector (OSTI)

30 June 1977 research-article Meteorological Effects on Solar Cells J. R. Mallinson P. T. Landsberg The effect of different meteorological conditions on solar cell outputs has been investigated...

1977-01-01T23:59:59.000Z

171

Organic Solar Cells — A Survey  

Science Journals Connector (OSTI)

The objective of this study was to examine in some detail the question of efficient organic solar cells. The scientific-technical situation concerning organic solar cells is highly confusing and unsatisfactory. I...

Dieter Bonnet; Jürgen Volkheimer

1991-01-01T23:59:59.000Z

172

Solar Cell Simulation  

K-12 Energy Lesson Plans and Activities Web site (EERE)

Students model the flow of energy from the sun as it enters a photovoltaic cell, moves along a wire and powers a load. The game-like atmosphere involves the younger students and helps them understand the continuous nature of the flow of energy. For a related lesson, please see the activity “Solar Powered System” (PDF 430 KB).

173

MORE POLYSILICON FOR SOLAR CELLS  

Science Journals Connector (OSTI)

MORE POLYSILICON FOR SOLAR CELLS ... MANUFACTURING: OCI and Wacker expand raw material capacity in South Korea and U.S. ...

MELODY VOITH

2010-12-20T23:59:59.000Z

174

Meteorological Effects on Solar Cells  

Science Journals Connector (OSTI)

...research-article Meteorological Effects on Solar Cells J. R. Mallinson P. T. Landsberg...different meteorological conditions on solar cell outputs has been investigated, using a model for a solar cell (p-on-n or n-on-p) which...

1977-01-01T23:59:59.000Z

175

EE580 Solar Cells Todd J. Kaiser  

E-Print Network [OSTI]

7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 08 · Solar Cell Characterization 1Montana State University: Solar Cells Lecture 8: Characterization Solar Cell Operation n Emitter p Base Rear completing the circuit 2Montana State University: Solar Cells Lecture 8: Characterization Solar Cell

Kaiser, Todd J.

176

Thermodynamic Limits of Solar Cell Efficiency  

Science Journals Connector (OSTI)

A general analysis of the coversion of solar heat to electrical energy in solar cells is presented. Some solar cell structures and processes are described which, in...

Würfel, Peter

177

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

178

Bilevel contact solar cells  

SciTech Connect (OSTI)

This patent describes a solar cell. It comprises a body of semiconductor material having at least one P/N junction therein, the body including a front face having no electrodes thereon, and a bilevel elevation back face having at least one P-doped region at a first level interdigitated with at least one N-doped region at a second level, wherein the at least one P-doped region and the at least one N-doped region partially overlap to form at least one compensated region; and a positive electrode contacting the at lease one P-doped region and a negative electrode contacting the at least one N-doped region, both electrodes contacting the solar cell on the back face.

Sinton, R.A.

1991-10-01T23:59:59.000Z

179

Advances in solar cell technology  

Science Journals Connector (OSTI)

The advances in solar cell efficiency radiation tolerance and cost over the last decade are reviewed. Potential performance of thin?film solar cells in space are discussed and the cost and the historical trends in production capability of the photovoltaics industry considered with respect to the requirements of satellite solar power systems.

Geoffrey A. Landis; Sheila G. Bailey

1995-01-01T23:59:59.000Z

180

Superlattice cascade solar cell  

SciTech Connect (OSTI)

This paper reports progress toward realization of a new cascade solar cell structure whose chief advantages over other present concepts are: use of silicon for the substrate and low bandgap cell; avoidance of the necessity of lattice matching; and incorporation of a GaAs/GaP superlattice to enhance efficiency and provide a low-resistance connecting junction. Details of the design and operation of an OMCVD system for growing this structure are presented. Results of experiments to optimize layer thickness, compositional uniformity, and surface morphology are described.

Wanlass, M.W.; Blakeslee, A.E.

1982-09-01T23:59:59.000Z

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


181

New Fabrication Method Improves the Efficiency and Economics of Solar Cells (Fact Sheet)  

SciTech Connect (OSTI)

Synthetic fabrication strategy optimizes the illumination geometry and transport properties of dye-sensitized solar cells. Using oriented titanium oxide (TiO{sub 2}) nanotube (NT) arrays has shown promise for dye-sensitized solar cells (DSSCs). High solar conversion efficiency requires that the incident light enters the cell from the photoelectrode side. However, for NT-based DSSCs, the light normally enters the cell through the counter electrode because a nontransparent titanium foil is typically used as the substrate for forming the aligned NTs and for making electrical contact with them. It has been synthetically challenging to prepare transparent TiO{sub 2} NT electrodes by directly anodizing Ti metal films on transparent conducting oxide (TCO) substrates because it is difficult to control the synthetic conditions. National Renewable Energy Laboratory (NREL) researchers have developed a general synthetic strategy for fabricating transparent TiO{sub 2} NT films on TCO substrates. With the aid of a conducting Nb-doped TiO{sub 2} (NTO) layer between the Ti film and TCO substrate, the Ti film can be anodized completely without degrading the TCO. The NTO layer protects the TCO from degradation through a self-terminating mechanism by arresting the electric field-assisted dissolution process at the NT-NTO interface. NREL researchers found that the illumination direction and wavelength of the light incident on the DSSCs strongly influenced the incident photon-to-current conversion efficiency, light-harvesting, and charge-collection properties, which, in turn, affect the photocurrent density, photovoltage, and solar energy conversion efficiency. Researchers also examined the effects of NT film thickness on the properties and performance of DSSCs and found that illuminating the cell from the photoelectrode side substantially increased the conversion efficiency compared with illuminating it from the counter-electrode side. This method solves a key challenge in fabricating NT-based DSSCs and determines an optimal illumination direction to use in these cells. The synthetic fabrication strategy will improve the economics and conversion efficiency of DSSCs.

Not Available

2012-07-01T23:59:59.000Z

182

Monolithic tandem solar cell  

DOE Patents [OSTI]

A single-crystal, monolithic, tandem, photovoltaic solar cell is described which includes (a) an InP substrate having upper and lower surfaces, (b) a first photoactive subcell on the upper surface of the InP substrate, (c) a second photoactive subcell on the first subcell; and (d) an optically transparent prismatic cover layer over the second subcell. The first photoactive subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched. 9 figs.

Wanlass, M.W.

1994-06-21T23:59:59.000Z

183

Introduction to Organic Solar Cells  

Science Journals Connector (OSTI)

Organic solar cells (OSCs) have attracted strong attention in ... the basics of OSCs. The basics of organic semiconductors are first described. We then provide...

Dixon D. S. Fung; Wallace C. H. Choy

2013-01-01T23:59:59.000Z

184

Thermal Management of Solar Cells.  

E-Print Network [OSTI]

??The focus on solar cells as a source of photovoltaic energy is rapidly increasing nowadays. The amount of sun's energy entering earth surface in one… (more)

Saadah, Mohammed Ahmed

2013-01-01T23:59:59.000Z

185

Heterojunction Silicon Microwire Solar Cells  

Science Journals Connector (OSTI)

Heterojunction Silicon Microwire Solar Cells ... § Center for Advanced Photovoltaic Devices and Systems, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada ...

Majid Gharghi; Ehsanollah Fathi; Boubacar Kante; Siva Sivoththaman; Xiang Zhang

2012-11-21T23:59:59.000Z

186

Fabrication and Characterization of Organic Solar Cells  

E-Print Network [OSTI]

and  characterization of organic solar cells.  Advanced D, Meissner D.  Organic Solar?Cells.  Advanced Materials.  tin  oxide  for  organic solar cell.  Electr Eng Jpn.  2006 

Yengel, Emre

2010-01-01T23:59:59.000Z

187

Solar Energy Materials & Solar Cells 90 (2006) 664677 Invited article  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 90 (2006) 664­677 Invited article Recent developments in evaporated CdTe solar cells G. Khrypunova , A. Romeob , F. Kurdesauc , D.L. Ba¨ tznerd , H. Zogge , A Abstract Recent developments in the technology of high vacuum evaporated CdTe solar cells are reviewed

Romeo, Alessandro

188

A Sunny Outlook for Solar Cells  

Science Journals Connector (OSTI)

A Sunny Outlook for Solar Cells ... Photovoltaic solar cells, which convert sunlight into electricity, are appealing from a variety of viewpoints. ...

BILL N. BARON

1987-01-19T23:59:59.000Z

189

ELECTROSPUN POLYMER-FIBER SOLAR CELL.  

E-Print Network [OSTI]

??A study of fabricating the first electrospun polymer-fiber solar cell with MEHPPV is presented. Motivation for the work and a brief history of solar cell… (more)

Nagata, Shinobu

2011-01-01T23:59:59.000Z

190

Hybrid Silicon Nanocone–Polymer Solar Cells  

Science Journals Connector (OSTI)

Hybrid Silicon Nanocone–Polymer Solar Cells ... In this study, we demonstrate a hybrid solar cell composed of Si nanocones and conductive polymer. ...

Sangmoo Jeong; Erik C. Garnett; Shuang Wang; Zongfu Yu; Shanhui Fan; Mark L. Brongersma; Michael D. McGehee; Yi Cui

2012-04-30T23:59:59.000Z

191

Biomimetic Dye Molecules for Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

such as those used in solar cells. This requires close monitoring to obtain reproducible solar cells. The polarization dependence of the spectra reveals the orientation of the...

192

Low-Cost Photovoltaics: Luminescent Solar Concentrators And Colloidal Quantum Dot Solar Cells  

E-Print Network [OSTI]

vacuum technology that is required in crystalline solar cellTechnologies, Inc. “SolarWindow” Quantum Dot Solar Cells

Leow, Shin Woei

2014-01-01T23:59:59.000Z

193

Optimized Designs and Materials for Nanostructure Based Solar Cells  

E-Print Network [OSTI]

photovoltaic (PV) solar cell technology. It is defined asWEIGHT SOLAR CELLS Current solar array technologies provide

Shao, Qinghui

2009-01-01T23:59:59.000Z

194

Module level solutions to solar cell polarization  

DOE Patents [OSTI]

A solar cell module includes interconnected solar cells, a transparent cover over the front sides of the solar cells, and a backsheet on the backsides of the solar cells. The solar cell module includes an electrical insulator between the transparent cover and the front sides of the solar cells. An encapsulant protectively packages the solar cells. To prevent polarization, the insulator has resistance suitable to prevent charge from leaking from the front sides of the solar cells to other portions of the solar cell module by way of the transparent cover. The insulator may be attached (e.g., by coating) directly on an underside of the transparent cover or be a separate layer formed between layers of the encapsulant. The solar cells may be back junction solar cells.

Xavier, Grace (Fremont, CA), Li; Bo (San Jose, CA)

2012-05-29T23:59:59.000Z

195

Definition: Solar cell | Open Energy Information  

Open Energy Info (EERE)

Solar cell Solar cell (Redirected from Definition:PV cell) Jump to: navigation, search Dictionary.png Solar cell Converts light into electrical energy. Traditional solar cells are made from silicon; second-generation solar cells (thin-film solar cells) are made from amorphous silicon or nonsilicon materials such as cadmium telluride; and third-generation solar cells are being made from variety of new materials, including solar inks, solar dyes, and conductive plastics.[1][2] View on Wikipedia Wikipedia Definition A solar cell (also called a photovoltaic cell) is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell (in that its electrical characteristics-e.g. current, voltage, or resistance-vary

196

Solar Cells Using Quantum Funnels  

Science Journals Connector (OSTI)

Solar Cells Using Quantum Funnels ... Department of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, Ontario M5S 3G4, Canada ...

Illan J. Kramer; Larissa Levina; Ratan Debnath; David Zhitomirsky; Edward H. Sargent

2011-08-09T23:59:59.000Z

197

Solar cell with back side contacts  

DOE Patents [OSTI]

A III-V solar cell is described herein that includes all back side contacts. Additionally, the positive and negative electrical contacts contact compoud semiconductor layers of the solar cell other than the absorbing layer of the solar cell. That is, the positive and negative electrical contacts contact passivating layers of the solar cell.

Nielson, Gregory N; Okandan, Murat; Cruz-Campa, Jose Luis; Resnick, Paul J; Wanlass, Mark Woodbury; Clews, Peggy J

2013-12-24T23:59:59.000Z

198

EE580 Solar Cells Todd J. Kaiser  

E-Print Network [OSTI]

7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 10 · Summary 1Montana State University: Solar Cells Lecture 10: Summary Summer 2010 Class Montana State University: Solar Cells Lecture 10: Summary 2 Solar Cell Operation n Emitter p Base Rear Contact Antireflection coating Absorption of photon

Kaiser, Todd J.

199

Silicon solar cells: state of the art  

Science Journals Connector (OSTI)

...Roberto Amendolia and Can Li Silicon solar cells: state of the art Martin A. Green...majority of photovoltaic (PV) solar cells produced to date have been based...this point are also explored. solar cells|silicon solar cells|silicon...

2013-01-01T23:59:59.000Z

200

Nanocrystal Solar Cells  

E-Print Network [OSTI]

research on organic photovoltaic cells since small molecule10 years prior (4). Photovoltaic cells with an active layerof the associated photovoltaic cells. 2.4 Charge transport

Gur, Ilan

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Polymer solar cells  

Science Journals Connector (OSTI)

...become free carriers that can provide...extraction of carriers before recombination...and acceptor energy levels to extend...certified power conversion efficiency...efficiency carrier multiplication...implications for solar energy conversion. Phys. Rev...

2013-01-01T23:59:59.000Z

202

TOPCAT Solar Cell Alignment & Energy Concentration Technology...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Thermal Solar Thermal Find More Like This Return to Search TOPCAT Solar Cell Alignment & Energy Concentration Technology Sandia National Laboratories Contact SNL About This...

203

Solar-Hydrogen Fuel-Cell Vehicles  

E-Print Network [OSTI]

M. A. (1992). Hydrogen Fuel-Cell Vehicles. Re- koebensteinthan both. Solar-hydrogen and fuel-cell vehicles wouldberegulation. Solar-Hydrogen Fuel-Cell Vehicles MarkA. DeLuchi

DeLuchi, Mark A.; Ogden, Joan M.

1993-01-01T23:59:59.000Z

204

A New Direction in Dye-Sensitized Solar Cells Redox Mediator Development: In Situ Fine-Tuning of the Cobalt(II)/(III) Redox Potential through Lewis Base Interactions  

Science Journals Connector (OSTI)

Representative orange or orange-red prismatic crystals of 2a, 3a, and 3b were mounted on an Oxford Gemini Ultra CCD diffractometer equipped with an Oxford Cryosystems 700 Cryostream and cooled to 123(1) K. Data were collected with Mo K? radiation (? = 0.71073 Å) and processed with CrysAlisPro software; Lorentz, polarization, and absorption corrections (multiscan) were applied. ... Optimized nanostructure sensitized with MK-2 dye shows efficiency of 5.5% at 1 sun. ...

Muhammad K. Kashif; Jordan C. Axelson; Noel W. Duffy; Craig M. Forsyth; Christopher J. Chang; Jeffrey R. Long; Leone Spiccia; Udo Bach

2012-09-11T23:59:59.000Z

205

Anomalous Hysteresis in Perovskite Solar Cells  

Science Journals Connector (OSTI)

Anomalous Hysteresis in Perovskite Solar Cells ... Even for silicon solar cells, hysteresis in the current-voltage curves can occur if the bias is swept extremely fast, with complete scans performed in less than 2 to 44 ms depending on the precise cell architecture. ... We will discuss the three predominant perovskite solar-cell architectures in this letter: (i) planar heterojunction solar cells with no mesoporous oxide,(7, 17) (ii) perovskite-sensitized solar cells fabricated on mesoporous TiO2,(1, 3) and (iii) meso-superstrutured solar cells (MSSCs) which employ mesoporous Al2O3 as an inert scaffold in place of the TiO2. ...

Henry J. Snaith; Antonio Abate; James M. Ball; Giles E. Eperon; Tomas Leijtens; Nakita K. Noel; Samuel D. Stranks; Jacob Tse-Wei Wang; Konrad Wojciechowski; Wei Zhang

2014-03-24T23:59:59.000Z

206

Solar Energy Materials & Solar Cells 78 (2003) 567595 Low-mobility solar cells: a device physics primer  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 78 (2003) 567­595 Low-mobility solar cells: a device physics, Syracuse, New York 13244-1130, USA Abstract The properties of pin solar cells based on photogeneration for the solar conversion efficiency of amorphous silicon-based cells that are limited by valence bandtail

Schiff, Eric A.

207

California: TetraCell Silicon Solar Cell Improves Efficiency...  

Energy Savers [EERE]

California: TetraCell Silicon Solar Cell Improves Efficiency, Wins R&D 100 Award California: TetraCell Silicon Solar Cell Improves Efficiency, Wins R&D 100 Award August 16, 2013 -...

208

Plastic Solar Cells See Bright Future | ANSER Center | Argonne...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Plastic Solar Cells See Bright Future Home > News & Events > Plastic Solar Cells See Bright Future Plastic Solar Cells See Bright Future Evanston, Ill---Energy consumption is...

209

Oligo and Poly-thiophene/Zno Hybrid Nanowire Solar Cells  

E-Print Network [OSTI]

less than organic bulk heterojunction solar cells. Knowledgeof individual organic/inorganic hybrid nanowire solar cells.an organic/inorganic hybrid single nanowire solar cell. End-

Briseno, Alejandro L.

2010-01-01T23:59:59.000Z

210

Highly Mismatched Alloys for Intermediate Band Solar Cells  

E-Print Network [OSTI]

single-junction intermediate band solar cells. Figure 5:conversion efficiency for a solar cell fabricated from a Znfor Intermediate Band Solar Cells W. Walukiewicz 1 , K. M.

2005-01-01T23:59:59.000Z

211

Definition: Solar cell | Open Energy Information  

Open Energy Info (EERE)

cell cell Jump to: navigation, search Dictionary.png Solar cell Converts light into electrical energy. Traditional solar cells are made from silicon; second-generation solar cells (thin-film solar cells) are made from amorphous silicon or nonsilicon materials such as cadmium telluride; and third-generation solar cells are being made from variety of new materials, including solar inks, solar dyes, and conductive plastics.[1][2] View on Wikipedia Wikipedia Definition A solar cell (also called a photovoltaic cell) is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell (in that its electrical characteristics-e.g. current, voltage, or resistance-vary when light is incident upon it) which, when exposed to light, can generate

212

Development of concentrator solar cells  

SciTech Connect (OSTI)

A limited pilot production run on PESC silicon solar cells for use at high concentrations (200 to 400 suns) is summarized. The front contact design of the cells was modified for operation without prismatic covers. The original objective of the contract was to systematically complete a process consolidation phase, in which all the, process improvements developed during the contract would be combined in a pilot production run. This pilot run was going to provide, a basis for estimating cell costs when produced at high throughput. Because of DOE funding limitations, the Photovoltaic Concentrator Initiative is on hold, and Applied Solar`s contract was operated at a low level of effort for most of 1993. The results obtained from the reduced scope pilot run showed the effects of discontinuous process optimization and characterization. However, the run provided valuable insight into the technical areas that can be optimized to achieve the original goals of the contract.

Not Available

1994-08-01T23:59:59.000Z

213

17 - Organic solar cells (OSCs)  

Science Journals Connector (OSTI)

Abstract The organic solar cell (OSC) is the only solar cell technology that fully addresses the challenges of manufacturing on a scale corresponding to an energy production capacity of 1 \\{GWpeak\\} per day based solely on abundant elements. This ability arises through the use of printing techniques and photoactive layers comprising carbon-based conjugated polymer materials. The technology is briefly reviewed in this chapter by describing the common device structures and materials. The second half of the chapter gives an overview on suitable roll-to-roll (R2R) processing techniques for the fabrication of OSCs. Finally some demonstration projects and future trends are illustrated.

M. Hösel; D. Angmo; F.C. Krebs

2013-01-01T23:59:59.000Z

214

Enzyme Mediated Synthesis of a Semiconducting Metal Oxide  

E-Print Network [OSTI]

production, through photovoltaic application such as dye-sensitized solar cells, and photocatalytic destruction of organic

Johnson, John Michael

2012-01-01T23:59:59.000Z

215

Using stochastic models to determine financial indicators and technical objectives for organic solar cells  

Science Journals Connector (OSTI)

Organic photovoltaics (PVs) are a rapidly emerging technology that has the potential to provide low-cost power for many different applications. The TEEOS model had previously been developed to determine various financial indicators for this technology. This paper modifies TEEOS in order to better analyze the effects of variability in the inputs. This modified TEEOS incorporates a mean-reverting jump diffusion model to simulate synthetic electricity price and a modified rainfall occurrence model to simulate a weather series. As well, the external quantum efficiency (EQE) is used as an input in order to gain insight on using low band gap polymers or enhancing the existing EQE. The power production NPV of three example cells, a Si-based solar cell, dye-sensitized solar cell (DSSC) and an organic solar cell (OSC), are first examined using a 25-year time period where the DSSC and OSC have to be replaced five times due to low lifetimes. The DSSC and OSC are also compared using five years of actual data using a five-year horizon. The sensitivity analysis looks specifically at inherent increases in the electricity price, the correlation of electricity prices and weather, modeling electricity without jumps, as well as enhancing and expanding the EQE. The best option for increasing the economic feasbility for the \\{OSCs\\} is expanding the EQE, that is, reducing the band gap of the polymers used. A break-even target of $45/m2 for the OSC is stated, which is on the low range of current cost estimates; this break-even-target would increase for locales closer to the equator.

Colin Powell; Yuri Lawryshyn; Timothy Bender

2012-01-01T23:59:59.000Z

216

Solar tree”: Exploring new form factors of organic solar cells  

Science Journals Connector (OSTI)

Abstract Organic solar cells have great potential as a clean and renewable solar energy conversion system, due to their low cost materials, ease of production, and lack of harmful emissions. The rapid improvement in organic solar cell performance in recent years has triggered significant interests in developing organic solar cells for commercial applications. Harnessing the unique set of characteristics of organic solar cells, here we demonstrate a new form factor for organic solar cells, a “solar tree” or an electricity-generating artificial tree with organic solar cells as leaves. We first fabricated polymer:fullerene based organic solar cells on flexible plastic substrates that show similar performance to devices on rigid glass substrates using the inverted device structure. Large-area flexible devices were fabricated and cut into palm leaf shapes with an active device area of 6.5 cm2 using a steel rule die. 12 leaf-shaped organic solar cells were then assembled to form a prototype “solar palm tree”. Two different wiring configurations among the devices provided different power delivery modes: a low-voltage, high-current “fan mode” and a high voltage, low-current “LED mode”.

Weiran Cao; Zhifeng Li; Yixing Yang; Ying Zheng; Weijie Yu; Rimza Afzal; Jiangeng Xue

2014-01-01T23:59:59.000Z

217

Photon Management in Thin Film Solar Cells  

Science Journals Connector (OSTI)

We analyze the absorption enhancement in single and tandem solar-cells comprising nanostructures that increase the path of the photons inside the solar cell. For this purpose we...

Rockstuhl, Carsten; Fahr, Stephan; Paul, Thomas; Menzel, Christoph; Bittkau, Karsten; Beckers, Thomas; Carius, Reinhard; Lederer, Falk

218

A Solid Solar-Cell Solution  

Science Journals Connector (OSTI)

A Solid Solar-Cell Solution ... Some three-quarters of electricity-producing rooftop photovoltaic panels and other types of solar arrays are based on crystalline silicon cells, a well-established but expensive technology. ...

MITCH JACOBY

2012-06-11T23:59:59.000Z

219

20% efficiency silicon solar cells  

Science Journals Connector (OSTI)

Further improvements in crystalline silicon solar cell performance have been obtained by combining the high levels of surface recombination control demonstrated in earlier passivated emitter solar cells with an improved optical approach. This approach involves the use of microgrooved surfaces which retain the advantages of pyramidally textured surfaces while avoiding some disadvantages of the latter. The approach results in a 5–6% improvement in cell short?circuit current density for cells fabricated on 0.1 and 0.2 ??cm (?p type) substrates. This results in an energy conversion efficiency for these devices above 20% under standard terrestrial test conditions (AM1.5 100 mW/cm2) for the first time.

A. W. Blakers; M. A. Green

1986-01-01T23:59:59.000Z

220

EE580 Solar Cells Todd J. Kaiser  

E-Print Network [OSTI]

7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 05 · P-N Junction 1Montana State University: Solar Cells Lecture 5: P-N Junction P-N Junction · Solar Cell is a large area P-N junction electron (hole) positive) 2Montana State University: Solar Cells Lecture 5: P-N Junction p-n Junction p n P

Kaiser, Todd J.

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


221

Key Physical Mechanisms in Nanostructured Solar Cells  

SciTech Connect (OSTI)

The objective of the project was to study both theoretically and experimentally the excitation, recombination and transport properties required for nanostructured solar cells to deliver energy conversion efficiencies well in excess of conventional limits. These objectives were met by concentrating on three key areas, namely, investigation of physical mechanisms present in nanostructured solar cells, characterization of loss mechanisms in nanostructured solar cells and determining the properties required of nanostructured solar cells in order to achieve high efficiency and the design implications.

Dr Stephan Bremner

2010-07-21T23:59:59.000Z

222

Low-Cost Photovoltaics: Luminescent Solar Concentrators And Colloidal Quantum Dot Solar Cells  

E-Print Network [OSTI]

photon harvesting in organic solar cells with luminescentfor low-energy gap organic solar cells,” Sol. Energy Mater.

Leow, Shin Woei

2014-01-01T23:59:59.000Z

223

Decohesion Kinetics in Polymer Organic Solar Cells  

Science Journals Connector (OSTI)

Decohesion Kinetics in Polymer Organic Solar Cells ... We investigate the role of molecular weight (MW) of the photoactive polymer poly(3-hexylthiophene) (P3HT) on the temperature-dependent decohesion kinetics of bulk heterojunction (BHJ) organic solar cells (OSCs). ... fullerenes; solar cells; thin films; fracture; polymer ...

Christopher Bruner; Fernando Novoa; Stephanie Dupont; Reinhold Dauskardt

2014-11-04T23:59:59.000Z

224

EE580 Solar Cells Todd J. Kaiser  

E-Print Network [OSTI]

7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 02 Microfabrication ­ A combination · Photolithograpy · Depostion · Etching 1 Montana State University: Solar Cells Lecture 2: Microfabrication Flow Montana State University: Solar Cells Lecture 2: Microfabrication Questions · What is heat? · Heat

Kaiser, Todd J.

225

EE580 Solar Cells Todd J. Kaiser  

E-Print Network [OSTI]

7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 09 · Photovoltaic Systems 1Montana State University: Solar Cells Lecture 9: PV Systems Several types of operating modes · Centralized power plant or wanted Montana State University: Solar Cells Lecture 9: PV Systems 2 Residential Side Mounted Montana

Kaiser, Todd J.

226

Optimized Designs and Materials for Nanostructure Based Solar Cells  

E-Print Network [OSTI]

and P. Peumans, “Organic solar cells with solution-processedtypical thickness in organic solar cell application [4]. At

Shao, Qinghui

2009-01-01T23:59:59.000Z

227

Monolayer MoS2 Heterojunction Solar Cells  

Science Journals Connector (OSTI)

Monolayer MoS2 Heterojunction Solar Cells ... molybdenum disulfide; heterojunction solar cell; 2D material; monolayer; chemical vapor deposition ...

Meng-Lin Tsai; Sheng-Han Su; Jan-Kai Chang; Dung-Sheng Tsai; Chang-Hsiao Chen; Chih-I Wu; Lain-Jong Li; Lih-Juann Chen; Jr-Hau He

2014-07-21T23:59:59.000Z

228

Ames Lab 101: Improving Solar Cell Efficiency  

ScienceCinema (OSTI)

Rana Biswas, a scientist with the Ames Laboratory, discusses his team's research in creating more efficient solar cells and working with Iowa Thin Film to produce these cells.

Biswas, Rana

2012-08-29T23:59:59.000Z

229

Ames Lab 101: Improving Solar Cell Efficiency  

SciTech Connect (OSTI)

Rana Biswas, a scientist with the Ames Laboratory, discusses his team's research in creating more efficient solar cells and working with Iowa Thin Film to produce these cells.

Biswas, Rana

2011-01-01T23:59:59.000Z

230

Solar cells Improved Hybrid Solar Cells via in situ UV Polymerization  

E-Print Network [OSTI]

Solar cells Improved Hybrid Solar Cells via in situ UV Polymerization Sanja Tepavcevic, Seth B-enhanced solar energy conversion. By using this simple in situ UV polymerization method that couples mobility of the photoactive layer can be enhanced. 1. Introduction Hybrid solar cells have been developed

Sibener, Steven

231

Making Solar Fuels by Artificial Photosynthesis  

SciTech Connect (OSTI)

In order for solar energy to serve as a primary energy source, it must be paired with energy storage on a massive scale. At this scale, solar fuels and energy storage in chemical bonds is the only practical approach. Solar fuels are produced in massive amounts by photosynthesis with the reduction of CO{sub 2} by water to give carbohydrates but efficiencies are low. In photosystem II (PSII), the oxygen-producing site for photosynthesis, light absorption and sensitization trigger a cascade of coupled electron-proton transfer events with time scales ranging from picoseconds to microseconds. Oxidative equivalents are built up at the oxygen evolving complex (OEC) for water oxidation by the Kok cycle. A systematic approach to artificial photo-synthesis is available based on a “modular approach” in which the separate functions of a final device are studied separately, maximized for rates and stability, and used as modules in constructing integrated devices based on molecular assemblies, nanoscale arrays, self-assembled monolayers, etc. Considerable simplification is available by adopting a “dye-sensitized photoelectrosynthesis cell” (DSPEC) approach inspired by dye-sensitized solar cells (DSSCs). Water oxidation catalysis is a key feature, and significant progress has been made in developing a single-site solution and surface catalysts based on polypyridyl complexes of Ru. In this series, ligand variations can be used to tune redox potentials and reactivity over a wide range. Water oxidation electrocatalysis has been extended to chromophore-catalyst assemblies for both water oxidation and DSPEC applications.

Song, Wenjing; Chen, Zuofeng; Brennaman, Kyle M; Concepcion, Javier J; Patrocinio, Antonio O T; Murakami Iha, Neyde Y; Meyer, Thomas J.

2011-01-01T23:59:59.000Z

232

An Introduction to Solar Cells  

Science Journals Connector (OSTI)

Most likely solar cells will play a significant role in this country's strategy to address the two interrelated issues of global warming and dependence on imported oil. The purpose of this paper is to present an explanation of how solar cells work at an introductory high school college or university physics course level. The treatment presented here will be qualitative and somewhat simplified in order to reach the desired audience; references are provided for a more detailed and mathematically sophisticated treatment. It is hoped that this paper will in a small way motivate students to learn more about this technology so critical to the energy and environmental future of this country.

Bernard J. Feldman

2010-01-01T23:59:59.000Z

233

Neutral Color Semitransparent Microstructured Perovskite Solar Cells  

Science Journals Connector (OSTI)

perovskite; solar cell; semitransparent; photovoltaics; building-integrated photovoltaics; neutral color; microstructured ... Building-integrated photovoltaics (BIPV) are an attractive concept for economic generation of solar power. ... This work now enables perovskite solar cells to not only compete for high-efficiency opaque applications but also offer an ideal solution to building integrated photovoltaics: neutral-color semitransparency at comparatively high efficiency. ...

Giles E. Eperon; Victor M. Burlakov; Alain Goriely; Henry J. Snaith

2013-12-10T23:59:59.000Z

234

Three-junction solar cell  

DOE Patents [OSTI]

A photovoltaic solar cell is formed in a monolithic semiconductor. The cell contains three junctions. In sequence from the light-entering face, the junctions have a high, a medium, and a low energy gap. The lower junctions are connected in series by one or more metallic members connecting the top of the lower junction through apertures to the bottom of the middle junction. The upper junction is connected in voltage opposition to the lower and middle junctions by second metallic electrodes deposited in holes 60 through the upper junction. The second electrodes are connected to an external terminal.

Ludowise, Michael J. (Cupertino, CA)

1986-01-01T23:59:59.000Z

235

Design Rules for Efficient Organic Solar Cells  

Science Journals Connector (OSTI)

There has been an intensive search for cost-effective photovoltaics since the development of the first solar cells in the 1950s [1-3...]. Among all the alternative technologies to silicon-based pn-junction solar

Z. Zhu; D. Mühlbacher; M. Morana; M. Koppe…

2009-01-01T23:59:59.000Z

236

Conditions for diffusion-limited and reaction-limited recombination in nanostructured solar cells  

SciTech Connect (OSTI)

The performance of Dye-sensitized solar cells (DSC) and related devices made of nanostructured semiconductors relies on a good charge separation, which in turn is achieved by favoring charge transport against recombination. Although both processes occur at very different time scales, hence ensuring good charge separation, in certain cases the kinetics of transport and recombination can be connected, either in a direct or an indirect way. In this work, the connection between electron transport and recombination in nanostructured solar cells is studied both theoretically and by Monte Carlo simulation. Calculations using the Multiple-Trapping model and a realistic trap distribution for nanostructured TiO{sub 2} show that for attempt-to-jump frequencies higher than 10{sup 11}–10{sup 13} Hz, the system adopts a reaction limited (RL) regime, with a lifetime which is effectively independent from the speed of the electrons in the transport level. For frequencies lower than those, and depending on the concentration of recombination centers in the material, the system enters a diffusion-limited regime (DL), where the lifetime increases if the speed of free electrons decreases. In general, the conditions for RL or DL recombination depend critically on the time scale difference between recombination kinetics and free-electron transport. Hence, if the former is too rapid with respect to the latter, the system is in the DL regime and total thermalization of carriers is not possible. In the opposite situation, a RL regime arises. Numerical data available in the literature, and the behavior of the lifetime with respect to (1) density of recombination centers and (2) probability of recombination at a given center, suggest that a typical DSC in operation stays in the RL regime with complete thermalization, although a transition to the DL regime may occur for electrolytes or hole conductors where recombination is especially rapid or where there is a larger dispersion of energies of electron acceptors.

Ansari-Rad, Mehdi, E-mail: ansari.rad@ut.ac.ir [Department of Physics, University of Tehran, 1439955961 Tehran (Iran, Islamic Republic of) [Department of Physics, University of Tehran, 1439955961 Tehran (Iran, Islamic Republic of); Department of Physics, University of Shahrood, Shahrood (Iran, Islamic Republic of); Anta, Juan A., E-mail: anta@upo.es [Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, 41013 Sevilla (Spain); Arzi, Ezatollah [Department of Physics, University of Tehran, 1439955961 Tehran (Iran, Islamic Republic of)] [Department of Physics, University of Tehran, 1439955961 Tehran (Iran, Islamic Republic of)

2014-04-07T23:59:59.000Z

237

Advanced Materials and Nano Technology for Solar Cells  

E-Print Network [OSTI]

AND NANO TECHNOLOGY FOR SOLAR CELLS A thesis submitted inMATERIALS AND NANO TECHNOLOGY FOR SOLAR CELLS In order tosolar cells have been introduced with this technology.

Han, Tao

2014-01-01T23:59:59.000Z

238

Solar Cell Modules With Improved Backskin  

DOE Patents [OSTI]

A laminated solar cell module comprises a front light transmitting support, a plurality of interconnected solar cells encapsulated by a light-transmitting encapsulant material, and an improved backskin formed of an ionomer/nylon alloy. The improved backskin has a toughness and melting point temperature sufficiently great to avoid any likelihood of it being pierced by any of the components that interconnect the solar cells.

Gonsiorawski, Ronald C. (Danvers, MA)

2003-12-09T23:59:59.000Z

239

Bypass diode for a solar cell  

DOE Patents [OSTI]

Bypass diodes for solar cells are described. In one embodiment, a bypass diode for a solar cell includes a substrate of the solar cell. A first conductive region is disposed above the substrate, the first conductive region of a first conductivity type. A second conductive region is disposed on the first conductive region, the second conductive region of a second conductivity type opposite the first conductivity type.

Rim, Seung Bum (Palo Alto, CA); Kim, Taeseok (San Jose, CA); Smith, David D. (Campbell, CA); Cousins, Peter J. (Menlo Park, CA)

2012-03-13T23:59:59.000Z

240

Improved monolithic tandem solar cell  

SciTech Connect (OSTI)

A single-crystal, monolithic, tandem, photovoltaic solar cell is described which includes (a) an InP substrate having upper and lower surfaces, (b) a first photoactive subcell on the upper surf ace of the InP substrate, (c) a second photoactive subcell on the first subcell; and (d) an optically transparent prismatic cover layer over the second subcell. The first photoactive subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched.

Wanlass, M.W.

1991-04-23T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Improved Contact Design Methodology for Solar Cells  

Science Journals Connector (OSTI)

A rigorous approach to optimize the layout of the front contact under the real working condition of the solar cell is proposed.

Li, Jing-Jing; Ding, Ding; Lim, Swee Hoe; Zhang, Yong-Hang

242

Optical Biasing Effects on Multijunction Solar Cells  

Science Journals Connector (OSTI)

We analyze and demonstrate the electrical and optical characterization techniques for multijunction solar cells to explain and quantify measurement artifacts commonly encountered under...

Lim, Swee H; O'Brien, Kevin; Steenbergen, Elizabeth H; Zhang, Yong-Hang

243

Plasmonic Thin-Film Solar Cells  

Science Journals Connector (OSTI)

A combined computational-experimental study optimizing plasmon-enhanced absorption in thin film solar cells presented. We investigate the effect of different geometries where...

Pala, Ragip; White, Justin; Brongersma, Mark

244

Organic Solar Cells and Their Nanostructural Improvement  

Science Journals Connector (OSTI)

Organic solar cells comprised of organic semiconductors have attracted considerable attention in the ... photonics and electronics during the last decade. Organic semiconductors are a less expensive alternative t...

Serap Günes

2011-01-01T23:59:59.000Z

245

Light Management Toward Efficient Organic Solar Cells  

Science Journals Connector (OSTI)

Light management methods for organic solar cells (OSCs) are presented: (i) thin-film optic method utilizing the inherent asymmetry of semitransparent OSCs; (ii) V-groove-based...

Yoo, Seunghyup; Han, Donggeon; Kim, Hoyeon; Cho, Changsoon; Lee, Jung-Yong

246

Fabrication and Characterization of Organic Solar Cells.  

E-Print Network [OSTI]

??Bulk heterojunction organic solar cells have recently drawn tremendous attention because of their technological advantages for actualization of large-area and cost effective fabrication. Two important… (more)

Yengel, Emre

2010-01-01T23:59:59.000Z

247

Very High Efficiency Solar Cell Modules  

SciTech Connect (OSTI)

The Very High Efficiency Solar Cell (VHESC) program is developing integrated optical system - PV modules for portable applications that operate at greater than 50% efficiency. We are integrating the optical design with the solar cell design, and have entered previously unoccupied design space. Our approach is driven by proven quantitative models for the solar cell design, the optical design, and the integration of these designs. Optical systems efficiency with an optical efficiency of 93% and solar cell device results under ideal dichroic splitting optics summing to 42.7 {+-} 2.5% are described.

Barnett, A.; Kirkpatrick, D.; Honsberg, C.; Moore, D.; Wanlass, M.; Emery, K.; Schwartz, R.; Carlson, D.; Bowden, S.; Aiken, D.; Gray, A.; Kurtz, S.; Kazmerski, L., et al

2009-01-01T23:59:59.000Z

248

Optical Optimization of Organic Solar Cells  

Science Journals Connector (OSTI)

The electromagnetic field distribution inside multilayer organic solar cells is simulated and optimized. The relative importance of optical, electrical and morphological properties...

Monestier, Florent; Simon, Jean-Jacques; Torchio, Philippe; Escoubas, Ludovic; Flory, François; El Amrani, Aumeur; Moliton, André; Ratier, Bernard; Cathelinaud, Michel; Defranoux, Christophe

249

Efficient Polymer Solar Cells - Energy Innovation Portal  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laboratory researchers have developed a process for producing more efficient polymer solar cells by increasing light absorption through a thin and uniform light-absorbing...

250

Front contact solar cell with formed emitter  

SciTech Connect (OSTI)

A bipolar solar cell includes a backside junction formed by an N-type silicon substrate and a P-type polysilicon emitter formed on the backside of the solar cell. An antireflection layer may be formed on a textured front surface of the silicon substrate. A negative polarity metal contact on the front side of the solar cell makes an electrical connection to the substrate, while a positive polarity metal contact on the backside of the solar cell makes an electrical connection to the polysilicon emitter. An external electrical circuit may be connected to the negative and positive metal contacts to be powered by the solar cell. The positive polarity metal contact may form an infrared reflecting layer with an underlying dielectric layer for increased solar radiation collection.

Cousins, Peter John

2014-11-04T23:59:59.000Z

251

Front contact solar cell with formed emitter  

DOE Patents [OSTI]

A bipolar solar cell includes a backside junction formed by an N-type silicon substrate and a P-type polysilicon emitter formed on the backside of the solar cell. An antireflection layer may be formed on a textured front surface of the silicon substrate. A negative polarity metal contact on the front side of the solar cell makes an electrical connection to the substrate, while a positive polarity metal contact on the backside of the solar cell makes an electrical connection to the polysilicon emitter. An external electrical circuit may be connected to the negative and positive metal contacts to be powered by the solar cell. The positive polarity metal contact may form an infrared reflecting layer with an underlying dielectric layer for increased solar radiation collection.

Cousins, Peter John (Menlo Park, CA)

2012-07-17T23:59:59.000Z

252

Experimental solar cells on the SUNSAT microsatellite  

SciTech Connect (OSTI)

SUNSAT is an experimental microsatellite, built by the University of Stellenbosch in South Africa. It is completely powered by 4 body-mounted GaAs solar panels, manufactured by EEV Ltd. One solar panel comprises 9 separate strings of experimental solar cells. This paper describes the design and manufacture of the experimental panel, data collection and analysis, and anticipates the experimental flight data.

Hardingham, C.; Simpson, J.; Wood, S.; Cross, T.A. [EEV Ltd., Chelmsford (United Kingdom); Uys, J.F. [Univ. of Stellenbosch (South Africa)

1997-12-31T23:59:59.000Z

253

Method for processing silicon solar cells  

DOE Patents [OSTI]

The instant invention teaches a novel method for fabricating silicon solar cells utilizing concentrated solar radiation. The solar radiation is concentrated by use of a solar furnace which is used to form a front surface junction and back-surface field in one processing step. The present invention also provides a method of making multicrystalline silicon from amorphous silicon. The invention also teaches a method of texturing the surface of a wafer by forming a porous silicon layer on the surface of a silicon substrate and a method of gettering impurities. Also contemplated by the invention are methods of surface passivation, forming novel solar cell structures, and hydrogen passivation. 2 figs.

Tsuo, Y.S.; Landry, M.D.; Pitts, J.R.

1997-05-06T23:59:59.000Z

254

Sensitized energy transfer for organic solar cells, optical solar concentrators, and solar pumped lasers  

E-Print Network [OSTI]

The separation of chromophore absorption and excitonic processes, such as singlet exciton fission and photoluminescence, offers several advantages to the design of organic solar cells and luminescent solar concentrators ...

Reusswig, Philip David

2014-01-01T23:59:59.000Z

255

Si concentrator solar cell development. [Final report  

SciTech Connect (OSTI)

This is the final report of a program to develop a commercial, high-efficiency, low-cost concentrator solar cell compatible with Spectrolab`s existing manufacturing infrastructure for space solar cells. The period covered is between 1991 and 1993. The program was funded through Sandia National Laboratories through the DOE concentrator initiative and, was also cost shared by Spectrolab. As a result of this program, Spectrolab implemented solar cells achieving an efficiency of over 19% at 200 to 300X concentration. The cells are compatible with DOE guidelines for a cell price necessary to achieve a cost of electricity of 12 cents a kilowatthour.

Krut, D.D. [Spectrolab, Inc., Sylmar, CA (United States)

1994-10-01T23:59:59.000Z

256

Quantum Junction Solar Cells Jiang Tang,,  

E-Print Network [OSTI]

Quantum Junction Solar Cells Jiang Tang,, Huan Liu,, David Zhitomirsky,§ Sjoerd Hoogland,§ Xihua, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada *S Supporting Information-type and p-type materials to create the first quantum junction solar cells. We present a family

257

Photovoltaics: Cheap, colourful solar cells  

Science Journals Connector (OSTI)

... composed of lead; methylammonium; and iodine or bromine, or both. Semiconductors used in solar ...solarcells ...

2013-04-17T23:59:59.000Z

258

Engineering the Electronic Band Structure for Multiband Solar Cells  

E-Print Network [OSTI]

Band Structure for Multiband Solar Cells N. López 1 , L. A.a number of new concepts of solar cells have been proposed.successful approach several solar cells using semiconductors

Lopez, N.

2011-01-01T23:59:59.000Z

259

Oligo and Poly-thiophene/Zno Hybrid Nanowire Solar Cells  

E-Print Network [OSTI]

ZnO Hybrid Nanowire Solar Cells Alejandro L. Briseno, ThomasZnO Hybrid Nanowire Solar Cells Alejandro L. Briseno, Thomashybrid single nanowire solar cell. End-functionalized oligo-

Briseno, Alejandro L.

2010-01-01T23:59:59.000Z

260

Enabling Thin Silicon Solar Cell Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Enabling Thin Silicon Solar Cell Enabling Thin Silicon Solar Cell Technology Enabling Thin Silicon Solar Cell Technology Print Friday, 21 June 2013 10:49 Generic silicon solar cells showing +45°, -45°, and dendritic crack patterns. The effort to shift U.S. energy reliance from fossil fuels to renewable sources has spurred companies to reduce the cost and increase the reliability of their solar photovoltaics (SPVs). The use of thinner silicon in SPV technologies is being widely adopted because it significantly reduces costs; however, silicon is brittle, and thinner silicon, coupled with other recent trends in SPV technologies (thinner glass, lighter or no metal frames, increased use of certain polymers for encapsulation of the silicon cells), is more susceptible to stress and cracking. When the thin

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Nanowire-based All Oxide Solar Cells  

SciTech Connect (OSTI)

We present an all-oxide solar cell fabricated from vertically oriented zinc oxide nanowires and cuprous oxide nanoparticles. Our solar cell consists of vertically oriented n-type zinc oxide nanowires, surrounded by a film constructed from p-type cuprous oxide nanoparticles. Our solution-based synthesis of inexpensive and environmentally benign oxide materials in a solar cell would allow for the facile production of large-scale photovoltaic devices. We found that the solar cell performance is enhanced with the addition of an intermediate oxide insulating layer between the nanowires and the nanoparticles. This observation of the important dependence of the shunt resistance on the photovoltaic performance is widely applicable to any nanowire solar cell constructed with the nanowire array in direct contact with one electrode.

Yang*, Benjamin D. Yuhas and Peidong; Yang, Peidong

2008-12-07T23:59:59.000Z

262

Photoassisted Overall Water Splitting in a Visible Light-Absorbing Dye-Sensitized Photoelectrochemical Cell  

E-Print Network [OSTI]

agents has enabled separate explorations of the hydrogen- and oxygen-evolving half-reactions.5,6 However the ruthenium center and the surfaces of the respective oxides. The synthetic procedures for these ligands

263

Advanced Materials and Nano Technology for Solar Cells  

E-Print Network [OSTI]

MATERIALS AND NANO TECHNOLOGY FOR SOLAR CELLS A thesisADVANCED MATERIALS AND NANO TECHNOLOGY FOR SOLAR CELLS Insilicon layers. The technology to add the intrinsic layer

Han, Tao

2014-01-01T23:59:59.000Z

264

Coating for Silicon Solar Cell by Using Silvaco Software  

E-Print Network [OSTI]

efficiency of SiO 2/Si3N 4silicon solar cell. The solar cell structure was modelled by using Silvaco software

A. Lennie; H. Abdullah; Z. M. Shila; M. A. Hannan

265

Advanced Materials and Nano Technology for Solar Cells  

E-Print Network [OSTI]

CRUZ ADVANCED MATERIALS AND NANO TECHNOLOGY FOR SOLAR CELLS12 3.2 SILVER NANOHAN ADVANCED MATERIALS AND NANO TECHNOLOGY FOR SOLAR CELLS

Han, Tao

2014-01-01T23:59:59.000Z

266

New Morphological Paradigm Uncovered in Organic Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

New Morphological Paradigm Uncovered in Organic Solar Cells Print Organic solar cells are made of light, flexible, renewable materials; they require simple and inexpensive...

267

Shiny quantum dots brighten future of solar cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Shiny quantum dots brighten future of solar cells Shiny quantum dots brighten future of solar cells The project demonstrates that superior light-emitting properties of quantum dots...

268

New Morphological Paradigm Uncovered in Organic Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Paradigm Uncovered in Organic Solar Cells Print Wednesday, 27 April 2011 00:00 Organic solar cells are made of light, flexible, renewable materials; they require simple and...

269

Silicon point contact concentrator solar cells  

SciTech Connect (OSTI)

Experimental results are presented for thin high resistivity concentrator silicon solar cells which use a back-side point-contact geometry. Cells of 130 and 233 micron thickness were fabricated and characterized. The thin cells were found to have efficiencies greater than 22 percent for incident solar intensities of 3 to 30 W/sq cm. Efficiency peaked at 23 percent at 11 W/sq cm measured at 22-25 C. Strategies for obtaining higher efficiencies with this solar cell design are discussed. 8 references.

Sinton, R.A.; Kwark, Y.; Swirhun, S.; Swanson, R.M.

1985-08-01T23:59:59.000Z

270

E-Print Network 3.0 - alloy solar cells Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Kaiser Summary: 7212010 1 EE580 - Solar Cells Todd J. Kaiser Lecture 06 Solar Cell Materials & Structures 1... Montana State University: Solar Cells Lecture 6: Solar...

271

Nickel-Cathoded Perovskite Solar Cells  

Science Journals Connector (OSTI)

Nickel-Cathoded Perovskite Solar Cells ... Current lead halide perovskite solar cells use high work function (?) precious metals, such as gold (? = 5.1 eV), as the back cathode to maximize the attainable photovoltage. ... We report herein a set of perovskite-type solar cells that use nickel (? = 5.04 eV), an earth-abundant element and non-precious metal, as back cathode and achieve the same open-circuit voltage as gold and an efficiency of 10.4%. ...

Qinglong Jiang; Xia Sheng; Bing Shi; Xinjian Feng; Tao Xu

2014-10-22T23:59:59.000Z

272

Heterojunction solar cell with passivated emitter surface  

DOE Patents [OSTI]

A high-efficiency heterojunction solar cell is described wherein a thin emitter layer (preferably Ga[sub 0.52]In[sub 0.48]P) forms a heterojunction with a GaAs absorber layer. A passivating window layer of defined composition is disposed over the emitter layer. The conversion efficiency of the solar cell is at least 25.7%. The solar cell preferably includes a passivating layer between the substrate and the absorber layer. An anti-reflection coating is preferably disposed over the window layer. 1 fig.

Olson, J.M.; Kurtz, S.R.

1994-05-31T23:59:59.000Z

273

Bypass diode for a solar cell  

DOE Patents [OSTI]

Methods of fabricating bypass diodes for solar cells are described. In once embodiment, a method includes forming a first conductive region of a first conductivity type above a substrate of a solar cell. A second conductive region of a second conductivity type is formed on the first conductive region. In another embodiment, a method includes forming a first conductive region of a first conductivity type above a substrate of a solar cell. A second conductive region of a second conductivity type is formed within, and surrounded by, an uppermost portion of the first conductive region but is not formed in a lowermost portion of the first conductive region.

Rim, Seung Bum; Kim, Taeseok; Smith, David D; Cousins, Peter J

2013-11-12T23:59:59.000Z

274

LQ Energy LDK Solar Q Cells JV | Open Energy Information  

Open Energy Info (EERE)

LQ Energy LDK Solar Q Cells JV Jump to: navigation, search Name: LQ Energy (LDK Solar & Q-Cells JV) Place: Saxony-Anhalt, Germany Sector: Solar Product: Germany-based JV between...

275

Indium oxide/n-silicon heterojunction solar cells  

DOE Patents [OSTI]

A high photo-conversion efficiency indium oxide/n-silicon heterojunction solar cell is spray deposited from a solution containing indium trichloride. The solar cell exhibits an Air Mass One solar conversion efficiency in excess of about 10%.

Feng, Tom (Morris Plains, NJ); Ghosh, Amal K. (New Providence, NJ)

1982-12-28T23:59:59.000Z

276

Organic Solar Cells: An Overview Focusing on Active Layer Morphology  

Science Journals Connector (OSTI)

Solar cells constructed of organic materials are becoming increasingly efficient due to ... concept. This review provides an overview of organic solar cells. Topics covered include: a brief history of organic solar

Travis L. Benanti; D. Venkataraman

2006-01-01T23:59:59.000Z

277

Modeling Light Trapping in Nanostructured Solar Cells  

Science Journals Connector (OSTI)

The integration of nanophotonic and plasmonic structures with solar cells offers the ability to control and confine light in nanoscale dimensions. These nanostructures can be used to couple incident sunlight into both localized and guided modes, enhancing ...

Vivian E. Ferry; Albert Polman; Harry A. Atwater

2011-11-14T23:59:59.000Z

278

Fabrication and Characterization of Organic Solar Cells  

E-Print Network [OSTI]

conversion efficiency (PCE) by %16 and %30, respectively.it is demonstrated that the PCE of the graphene based solarpower conversion efficiency (PCE). PCE of a solar cell is

Yengel, Emre

2010-01-01T23:59:59.000Z

279

Application of lasers in solar cell technologies  

Science Journals Connector (OSTI)

The possibilities for applying lasers to the fabrication of solar cells (the laser texturing of silicon surfaces and pulsed laser deposition of indium tin oxide (ITO) thin films) are demonstrated.

D. A. Zuev; A. A. Lotin; O. A. Novodvorsky…

2012-10-01T23:59:59.000Z

280

Organic p-i-n solar cells  

Science Journals Connector (OSTI)

We introduce a p-i-n-type heterojunction architecture for organic solar cells where the active region is sandwiched between...p-i-n means here a layer sequence in the form p-doped layer, intrinsic layer an...

B. Maennig; J. Drechsel; D. Gebeyehu; P. Simon; F. Kozlowski…

2004-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Enhanced Photon Recycling in Multijunction Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a nd J .A. R ogers, " Device A rchitectures f or E nhanced Photon Recycling in Thin---Film MulQjuncQon Solar Cells." Adv. Energy M ater. (2014). DOI: 1 0.1002aenm.201400919...

282

Hybrid Silicon Nanocone-Polymer Solar Cells Sangmoo Jeong,  

E-Print Network [OSTI]

alternative energy solution. KEYWORDS: Nanotexture, solar cell, heterojunction, conductive polymer, light solar cell.1 Conventional Si solar cells have p-n junctions inside for an efficient extraction of lightHybrid Silicon Nanocone-Polymer Solar Cells Sangmoo Jeong, Erik C. Garnett, Shuang Wang, Zongfu Yu

Cui, Yi

283

Development efforts on silicon solar cells  

SciTech Connect (OSTI)

This report presents a summary of the major results from the silicon high-concentration solar cell program at Stanford University from the period 1983--1990. Following a detailed design study, efforts were focused upon experimental verification of the modeled results that predicted 28% efficiencies for a new 500X concentrator solar cell design. A history of the research progress is given detailing the critical experiments that enabled the demonstration of 19.6% cells in 1983, then subsequent improvements culminating in efficiencies over 28% by 1987. In addition to laboratory efficiency improvements, the report details advances in the understanding of the fundamental device physics and modeling of silicon solar cell operation. The latter stages of the program included the development of module-ready cells in large quantity for the EPRI prototype 500X concentrator modules. Several of these 48-cell modules are currently in the field under test.

Sinton, R.A.; Swanson, R.M. (Stanford Univ., CA (United States))

1992-02-01T23:59:59.000Z

284

Cheap solar cells tempt businesses  

Science Journals Connector (OSTI)

... of Valencia in Spain, first heard about perovskites, the latest hope for low-cost solar power, in April last year. Unlike the slabs of purified silicon at the heart ... in April last year. Unlike the slabs of purified silicon at the heart of the solar ...

Richard Van Noorden

2014-09-24T23:59:59.000Z

285

Enzyme Mediated Synthesis of a Semiconducting Metal Oxide  

E-Print Network [OSTI]

Gratzel demonstrated a photovoltaic cell based on the dye-photovoltaic application such as dye-sensitized solar cells,

Johnson, John Michael

2012-01-01T23:59:59.000Z

286

Mechanical Engineering Department S E M I N A R  

E-Print Network [OSTI]

, such as batteries, fuel cells, and dye sensitized solar cells, etc. Understanding such transport at the nanoscale

287

Cheaper Silicon Found Effective for Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cheaper Silicon Found Effective for Solar Cells Cheaper Silicon Found Effective for Solar Cells A research team from the University of California at Berkeley, Lawrence Berkeley National Laboratory, Argonne National Laboratory, and Pacific Northwest National Laboratory, using U.S. Department of Energy (DOE) synchrotron light sources, has successfully shown that inexpensive silicon has the potential to be used for photovoltaic (PV) devices, commonly known as solar cells. In a new approach-whose findings were published online in Nature Materials (August 14, 2005)-the researchers used nanodefect engineering to control transition metal contamination in order to produce impurity-rich, performance-enhanced multicrystalline silicon (mc-Si) material. "Solar energy is often touted as the most promising and secure energy

288

Solar Energy Materials & Solar Cells 88 (2005) 6573 Investigation of pulsed non-melt laser annealing  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 88 (2005) 65­73 Investigation of pulsed non-melt laser annealing on the film properties and performance of Cu(In,Ga)Se2 solar cells Xuege Wanga , Sheng S. Lia,�, C time to modify near- surface defects and related junction properties in Cu(In,Ga)Se2 (CIGS) solar cells

Anderson, Timothy J.

289

* Corresponding author. Solar Energy Materials & Solar Cells 58 (1999) 209}218  

E-Print Network [OSTI]

* Corresponding author. Solar Energy Materials & Solar Cells 58 (1999) 209}218 A highly e solar cells based on the CdTe/CdS heterojunction still exhibits quite a few open problems$cient and stable CdTe/CdS thin "lm solar cell N. Romeo, A. Bosio, R. Tedeschi*, A. Romeo, V. Canevari Dipartimento

Romeo, Alessandro

290

Laboratory experiments with silicon solar cells  

Science Journals Connector (OSTI)

The uses of silicon solar cells as subjects of experiments in undergraduate teaching laboratories are discussed. The basic theory of these cells is presented including equivalent circuits and characteristic equations. Fundamental experiments on the power output and efficiency which are appropriate for non?science majors’ courses are detailed as well as more advanced experiments on cell parameters. Experimental results and agreement with theory are presented for a typical inexpensive cell.

D. W. Kammer; M. A. Ludington

1977-01-01T23:59:59.000Z

291

Plastic Schottky-barrier solar cells  

DOE Patents [OSTI]

A photovoltaic cell structure is fabricated from an active medium including an undoped polyacetylene, organic semiconductor. When a film of such material is in rectifying contact with a metallic area electrode, a Schottky-barrier junction is obtained within the body of the cell structure. Also, a gold overlayer passivates a magnesium layer on the undoped polyacetylene film. With the proper selection and location of elements a photovoltaic cell structure and solar cell are obtained.

Waldrop, J.R.; Cohen, M.J.

1981-12-30T23:59:59.000Z

292

NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL  

E-Print Network [OSTI]

technologies. Silicon photovoltaic module cost have continuegeneration photovoltaic panels due to their low cost, easycost-efficient multiple junction solar devices with remarkably high efficiency should be the direction and objective of photovoltaic

Phuyal, Dibya

2012-01-01T23:59:59.000Z

293

Improving Solar-Cell Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

films with different PID2 contents. From L. Lu et al., Nat. Photonics 8, 716 (2014). New light has been shed on solar power generation using devices made with polymers, thanks to...

294

Sandia National Laboratories: high-efficiency solar cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

cells Sandia and EMCORE: Solar Photovoltaics, Fiber Optics, MODE, and Energy Efficiency On March 29, 2013, in Concentrating Solar Power, Energy, Partnership, Photovoltaic,...

295

Process for Fabrication of Efficient Solar Cells - Energy Innovation...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to provide low-cost solar energy conversion, flexibility, manufacturability, and are light weight. However, the efficiency of organic solar cells is about 4-6%, and increasing...

296

Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy  

E-Print Network [OSTI]

solar cell efficiencies for various photovoltaic technologiessolar cells use luminescent solar concentrator technology tosolar cell efficiencies for various photovoltaic technologies

Bezryadina, Anna Sergeyevna

2012-01-01T23:59:59.000Z

297

Investigating the efficiency of Silicon Solar cells at  

E-Print Network [OSTI]

Investigating the efficiency of Silicon Solar cells at different temperatures and wavelengths to study the characteristics of silicon photovoltaic cells (solar cells). We vary the wavelength of light as well as the temperature of the solar cell to investigate how the open voltage across the cell varies

Attari, Shahzeen Z.

298

Standing Wave Enhancement of Red Absorbance and Photocurrent in Dye-Sensitized Titanium Dioxide  

E-Print Network [OSTI]

the Department of Chemistry, The PennsylVania State UniVersity, UniVersity Park, PennsylVania 16802, Central, American UniVersity of Beirut, Beirut 110236, Lebanon, and National Renewable Energy Laboratory, Golden have attracted much attention as inexpensive and relatively efficient solar photovol- taic devices

299

High-efficiency concentrator silicon solar cells  

SciTech Connect (OSTI)

This report presents results from extensive process development in high-efficiency Si solar cells. An advanced design for a 1.56-cm{sup 2} cell with front grids achieved 26% efficiency at 90 suns. This is especially significant since this cell does not require a prismatic cover glass. New designs for simplified backside-contact solar cells were advanced from a status of near-nonfunctionality to demonstrated 21--22% for one-sun cells in sizes up to 37.5 cm{sup 2}. An efficiency of 26% was achieved for similar 0.64-cm{sup 2} concentrator cells at 150 suns. More fundamental work on dopant-diffused regions is also presented here. The recombination vs. various process and physical parameters was studied in detail for boron and phosphorous diffusions. Emitter-design studies based solidly upon these new data indicate the performance vs design parameters for a variety of the cases of most interest to solar cell designers. Extractions of p-type bandgap narrowing and the surface recombination for p- and n-type regions from these studies have a generality that extends beyond solar cells into basic device modeling. 68 refs., 50 figs.

Sinton, R.A.; Cuevas, A.; King, R.R.; Swanson, R.M. (Stanford Univ., CA (USA). Solid-State Electronics Lab.)

1990-11-01T23:59:59.000Z

300

Liquid cooled, linear focus solar cell receiver  

DOE Patents [OSTI]

Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

Kirpich, Aaron S. (Broomall, PA)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Liquid cooled, linear focus solar cell receiver  

DOE Patents [OSTI]

Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

Kirpich, A.S.

1983-12-08T23:59:59.000Z

302

Method of restoring degraded solar cells  

DOE Patents [OSTI]

Amorphous silicon solar cells have been shown to have efficiencies which degrade as a result of long exposure to light. Annealing such cells in air at a temperature of about 200 C for at least 30 minutes restores their efficiency. 2 figs.

Staebler, D.L.

1983-02-01T23:59:59.000Z

303

Method of restoring degraded solar cells  

DOE Patents [OSTI]

Amorphous silicon solar cells have been shown to have efficiencies which degrade as a result of long exposure to light. Annealing such cells in air at a temperature of about 200.degree. C. for at least 30 minutes restores their efficiency.

Staebler, David L. (Lawrenceville, NJ)

1983-01-01T23:59:59.000Z

304

Photonic Design: From Fundamental Solar Cell Physics to Computational Inverse Design  

E-Print Network [OSTI]

limit for any solar cell technology will require lightof next-generation solar cell technologies, examining thes prospects as a solar cell technology. There is a well-

Miller, Owen Dennis

2012-01-01T23:59:59.000Z

305

Core/Shell heterojunction nanowire solar cell fabricated by lithographically patterned nanowire electrodeposition method  

E-Print Network [OSTI]

in state of the art solar cell technology and how we canand second generation solar cell technology and currentof the present solar cell technology by synthesizing metal/

Ghosh, Somnath

2012-01-01T23:59:59.000Z

306

Achieving High Performance Polymer Tandem Solar Cells via Novel Materials Design  

E-Print Network [OSTI]

polymers for organic solar cell applications. Chem. Rev.Hummelen, J. C. , Plastic solar cells. Adv. Funct. Mater.Efficient inverted polymer solar cells. Appl. Phys. Lett.

Dou, Letian

2014-01-01T23:59:59.000Z

307

Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy  

E-Print Network [OSTI]

the polymer and organic solar cells present the greatestlayer component in the organic solar cell is the part of theORGANIC POLYMERS SOLAR CELLS

Bezryadina, Anna Sergeyevna

2012-01-01T23:59:59.000Z

308

Achieving High Performance Polymer Tandem Solar Cells via Novel Materials Design  

E-Print Network [OSTI]

of conjugated polymers for organic solar cell applications.characterization of organic solar cells. Adv. Funct. Mater.techniques for the organic solar cell are employed to

Dou, Letian

2014-01-01T23:59:59.000Z

309

The Silicon Solar Cell Turns 50  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Daryl Chapin, Calvin Fuller, and Gerald Daryl Chapin, Calvin Fuller, and Gerald Pearson likely never imagined inventing a solar cell that would revolutionize the photovoltaics industry. There wasn't even a photovoltaics industry to revolu- tionize in 1952. The three scientists were simply trying to solve problems within the Bell tele- phone system. Traditional dry cell batteries, which worked fine in mild climates, degraded too rapidly in the tropics and ceased to work when needed. The company therefore asked its famous research arm-Bell Laboratories-to explore alternative sources of freestand- ing power. Daryl Chapin got the assign- ment. At that time, his job was to test wind machines, thermoelectric gensets, and steam engines. Being a solar energy enthusiast, he suggested that the investi- gation include solar cells. His supervisor

310

Fabricating solar cells with silicon nanoparticles  

DOE Patents [OSTI]

A laser contact process is employed to form contact holes to emitters of a solar cell. Doped silicon nanoparticles are formed over a substrate of the solar cell. The surface of individual or clusters of silicon nanoparticles is coated with a nanoparticle passivation film. Contact holes to emitters of the solar cell are formed by impinging a laser beam on the passivated silicon nanoparticles. For example, the laser contact process may be a laser ablation process. In that case, the emitters may be formed by diffusing dopants from the silicon nanoparticles prior to forming the contact holes to the emitters. As another example, the laser contact process may be a laser melting process whereby portions of the silicon nanoparticles are melted to form the emitters and contact holes to the emitters.

Loscutoff, Paul; Molesa, Steve; Kim, Taeseok

2014-09-02T23:59:59.000Z

311

EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques  

E-Print Network [OSTI]

;3 Screen Printed Solar Cells · Firing the contacts ­ The furnace heats the cell to a high temperature & Metal Closeup 14 Front and Back of Screen Printed Solar Cell 15 Crystallization Furnace for Ingot1 EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques Dr. Todd J. Kaiser

Kaiser, Todd J.

312

Experiment Based Teaching of Solar Cell Operation and Characterization Using the SolarLab Platform  

E-Print Network [OSTI]

(MSc and PhD level) taught at the Department of Energy Technology, Aalborg University. SOLAR CELLExperiment Based Teaching of Solar Cell Operation and Characterization Using the SolarLab Platform and interested in almost any topic. This paper presents such a hands-on approach for teaching solar cell

Sera, Dezso

313

Origami-enabled deformable silicon solar cells  

SciTech Connect (OSTI)

Deformable electronics have found various applications and elastomeric materials have been widely used to reach flexibility and stretchability. In this Letter, we report an alternative approach to enable deformability through origami. In this approach, the deformability is achieved through folding and unfolding at the creases while the functional devices do not experience strain. We have demonstrated an example of origami-enabled silicon solar cells and showed that this solar cell can reach up to 644% areal compactness while maintaining reasonable good performance upon cyclic folding/unfolding. This approach opens an alternative direction of producing flexible, stretchable, and deformable electronics.

Tang, Rui; Huang, Hai; Liang, Hanshuang; Liang, Mengbing [School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287 (United States); Tu, Hongen; Xu, Yong [Electrical and Computer Engineering, Wayne State University, 5050 Anthony Wayne Dr., Detroit, Michigan 48202 (United States); Song, Zeming; Jiang, Hanqing, E-mail: hanqing.jiang@asu.edu [School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287 (United States); Yu, Hongyu, E-mail: hongyu.yu@asu.edu [School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287 (United States); School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287 (United States)

2014-02-24T23:59:59.000Z

314

High throughput solar cell ablation system  

DOE Patents [OSTI]

A solar cell is formed using a solar cell ablation system. The ablation system includes a single laser source and several laser scanners. The laser scanners include a master laser scanner, with the rest of the laser scanners being slaved to the master laser scanner. A laser beam from the laser source is split into several laser beams, with the laser beams being scanned onto corresponding wafers using the laser scanners in accordance with one or more patterns. The laser beams may be scanned on the wafers using the same or different power levels of the laser source.

Harley, Gabriel; Pass, Thomas; Cousins, Peter John; Viatella, John

2012-09-11T23:59:59.000Z

315

High throughput solar cell ablation system  

DOE Patents [OSTI]

A solar cell is formed using a solar cell ablation system. The ablation system includes a single laser source and several laser scanners. The laser scanners include a master laser scanner, with the rest of the laser scanners being slaved to the master laser scanner. A laser beam from the laser source is split into several laser beams, with the laser beams being scanned onto corresponding wafers using the laser scanners in accordance with one or more patterns. The laser beams may be scanned on the wafers using the same or different power levels of the laser source.

Harley, Gabriel; Pass, Thomas; Cousins, Peter John; Viatella, John

2014-10-14T23:59:59.000Z

316

Solar cell contact formation using laser ablation  

DOE Patents [OSTI]

The formation of solar cell contacts using a laser is described. A method of fabricating a back-contact solar cell includes forming a poly-crystalline material layer above a single-crystalline substrate. The method also includes forming a dielectric material stack above the poly-crystalline material layer. The method also includes forming, by laser ablation, a plurality of contacts holes in the dielectric material stack, each of the contact holes exposing a portion of the poly-crystalline material layer; and forming conductive contacts in the plurality of contact holes.

Harley, Gabriel; Smith, David; Cousins, Peter

2012-12-04T23:59:59.000Z

317

Solar cell contact formation using laser ablation  

DOE Patents [OSTI]

The formation of solar cell contacts using a laser is described. A method of fabricating a back-contact solar cell includes forming a poly-crystalline material layer above a single-crystalline substrate. The method also includes forming a dielectric material stack above the poly-crystalline material layer. The method also includes forming, by laser ablation, a plurality of contacts holes in the dielectric material stack, each of the contact holes exposing a portion of the poly-crystalline materiat layer; and forming conductive contacts in the plurality of contact holes.

Harley, Gabriel; Smith, David D.; Cousins, Peter John

2014-07-22T23:59:59.000Z

318

Solar-Driven Microbial Photoelectrochemical Cells with a Nanowire Photocathode  

E-Print Network [OSTI]

Solar-Driven Microbial Photoelectrochemical Cells with a Nanowire Photocathode Fang Qian,* Gongming cell (solar MPC) that can produce sustainable energy through coupling the microbial catalysis of biodegradable organic matter with solar energy conversion. The solar MPC consists of a p-type cuprous oxide

Li, Yat

319

Tuning of Plasmonic Nanoparticles for Enhancing Solar Cell Efficiency  

Science Journals Connector (OSTI)

Plasmonic nanoparticles based thin film solar cells plays a crucial role in designing the current breed of third generation solar cells. To decrease the material cost for economic viability without compromising o...

Somik Chakravarty; Lingeswaran Arunagiri…

2014-01-01T23:59:59.000Z

320

III-V Compound Semiconductor Nanowire Solar Cells  

Science Journals Connector (OSTI)

Nanowire-array solar cells with core-multi-shell and axial junction were fabricated using selective-area MOVPE. Advantages are efficient light trapping and flexible solar cell by...

Fukui, Takashi; Nakai, Eiji; Chen, MuYi; Tomioka, Katsuhiro

Note: This page contains sample records for the topic "dye-sensitized solar cells" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


321

Metal Nanoparticles Enhanced Optical Absorption in Thin Film Solar Cells  

Science Journals Connector (OSTI)

The plasmonic enhanced absorption for thin film solar cells with silver nanoparticles (NPs) deposited on top of the amorphous silicon film (a-Si:H) solar cells and embedded inside the...

Xie, Wanlu; Liu, Fang; Qu, Di; Xu, Qi; Huang, Yidong

322

3D Photonic Crystals for Photon Management in Solar Cells  

Science Journals Connector (OSTI)

Photon management is a key element to optimize the optical and electro-optical performance of solar cells. The potential of 3D photonic crystals for photon management in solar cells...

Wehrspohn, Ralf; Sprafke, Alexander

323

Ideal Configuration For Nanoscale Solar Cells - Energy Innovation...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SummaryThe standard design of excitonic solar cells, which includes most organic-based solar cells, is ideal in only two out of three dimensions. In other words, excitons can...

324

P3HT:PCBM Bulk Heterojunction Organic Solar Cell.  

E-Print Network [OSTI]

?? Organic solar cells have emerged as an important cheap photovoltaic technology. In this thesis work, a study of P3HT:PCBM heterojunction solar cells was presented.… (more)

Liu, Jiang

2008-01-01T23:59:59.000Z

325

Heterojunction solar cells produced by porous silicon layer transfer technology  

Science Journals Connector (OSTI)

In this paper, we present the result of heterojunction solar cells based on porous silicon layer transfer technology. a-Si/c-Si structured solar cells were prepared in which the c-Si ... was investigated. The spe...

Zhihao Yue; Honglie Shen; Lei Zhang; Bin Liu; Chao Gao; Hongjie Lv

2012-09-01T23:59:59.000Z

326

Alternative technology used to manufacture semitransparent monocrystalline silicon solar cells  

Science Journals Connector (OSTI)

This paper presents the manufacturing technology of a new semitransparent solar cell that can be used for building integrated ... anisotropic etching. The efficiency of the semitransparent solar cell is 6.12 % in...

Enik? Bándy; Márta Rencz

2013-06-01T23:59:59.000Z

327

Organic Solar Cells with Inverted and Tandem Structures  

Science Journals Connector (OSTI)

During the past decade, organic solar cells have attracted great attention due to their ... Although the technologies of small molecule and polymer solar cells have advanced significantly, the efficiency and stab...

De Wei Zhao; Aung Ko Ko Kyaw; Xiao Wei Sun

2011-01-01T23:59:59.000Z

328

The solar cell in hornet cuticle: nanometer to micrometer scale  

Science Journals Connector (OSTI)

......1999) Ciliary hair cells and cuticular photoreceptor...of the nature's ; 7 solar cells; the thermophotovoltaic...Sede Boqer Symposia on Solar Electricity Production. 12- d e v i c e...1999 > Biodegradable organic polymers produced by......

Jacob S. Ishay; Eyal Rosenzweig; Luba Litinetsky; Shira Kirshboim

2000-01-01T23:59:59.000Z

329

Argonne CNM Highlight: Improved Hybrid Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Improved Hybrid Solar Cells Improved Hybrid Solar Cells inorganic-organic hybrid photovoltaic (PV) cells imade of highly ordered titanium dioxide (TiO2) nanotube arrays filled with solid organic hole conductors such as conjugated polymers One approach for making inexpensive inorganic-organic hybrid photovoltaic (PV) cells is to fill highly ordered titanium dioxide (TiO2) nanotube arrays with solid organic hole conductors such as conjugated polymers. Center for Nanoscale Materials researchers and collaborative users from the University of Chicago present a new in situ ultraviolet (UV) polymerization method for growing polythiophene inside TiO2 nanotubes and compare this method to the conventional approach of infiltrating nanotubes with presynthesized polymer. A nanotubular TiO2 substrate is immersed in a 2,5-diiodothiophene (DIT)

330

Method of fabricating a solar cell  

DOE Patents [OSTI]

Methods of fabricating solar cells are described. A porous layer may be formed on a surface of a substrate, the porous layer including a plurality of particles and a plurality of voids. A solution may be dispensed into one or more regions of the porous layer to provide a patterned composite layer. The substrate may then be heated.

Pass, Thomas; Rogers, Robert

2014-02-25T23:59:59.000Z

331

Organic solar cell degradation probed by the nanosecond photoresponse  

Science Journals Connector (OSTI)

We measure the transient electrical response of small organic solar cells illuminated with nanosecond light pulses during degradation....

S. W. Kettlitz; S. Valouch; U. Lemmer

2010-06-01T23:59:59.000Z

332

Optimized Designs and Materials for Nanostructure Based Solar Cells  

E-Print Network [OSTI]

energy conversion efficiency of solar cells increased steadily in the last decade through enhanced photon absorption and charge carrier

Shao, Qinghui

2009-01-01T23:59:59.000Z

333

Plastic Schottky barrier solar cells  

DOE Patents [OSTI]

A photovoltaic cell structure is fabricated from an active medium including an undoped, intrinsically p-type organic semiconductor comprising polyacetylene. When a film of such material is in rectifying contact with a magnesium electrode, a Schottky-barrier junction is obtained within the body of the cell structure. Also, a gold overlayer passivates the magnesium layer on the undoped polyacetylene film.

Waldrop, James R. (Thousand Oaks, CA); Cohen, Marshall J. (Thousand Oaks, CA)

1984-01-24T23:59:59.000Z

334

Hydrogen-Evolving Solar Cells  

Science Journals Connector (OSTI)

...PHOTOELECTROLYSIS OF WATER IN CELLS WITH SRTIO3 ANODES, APPLIED PHYSICS LETTERS 28 : 241...PHOTOELECTROLYSIS OF WATER IN CELLS WITH TIO2 ANODES, MATERIALS RESEARCH BULLETIN 10...WATER USING SINGLE-CRYSTAL ALPHA-FE2O3 ANODES, MATERIALS RESEARCH BULLETIN 11...

Adam Heller

1984-03-16T23:59:59.000Z

335

AgBiS2 Semiconductor-Sensitized Solar Cells  

Science Journals Connector (OSTI)

AgBiS2 Semiconductor-Sensitized Solar Cells ... We present a new ternary semiconductor sensitizer-AgBiS2 for solar cells. ... Liquid-junction semiconductor-sensitized solar cells were fabricated from the synthesized AgBiS2 semiconductor. ...

Pen-Chi Huang; Wei-Chih Yang; Ming-Way Lee

2013-08-16T23:59:59.000Z

336

Hole Selective MoOx Contact for Silicon Solar Cells  

Science Journals Connector (OSTI)

Hole Selective MoOx Contact for Silicon Solar Cells ... This work has important implications toward enabling a novel class of junctionless devices with applications for solar cells, light-emitting diodes, photodetectors, and transistors. ... Junctionless solar cells; silicon photovoltaics; heterojunctions; dopant-free contact; molybdenum trioxide ...

Corsin Battaglia; Xingtian Yin; Maxwell Zheng; Ian D. Sharp; Teresa Chen; Stephen McDonnell; Angelica Azcatl; Carlo Carraro; Biwu Ma; Roya Maboudian; Robert. M. Wallace; Ali Javey

2014-01-07T23:59:59.000Z

337

Vacuum-Deposited Planar Heterojunction Polymer Solar Cells  

Science Journals Connector (OSTI)

Vacuum-Deposited Planar Heterojunction Polymer Solar Cells ... Bilayer heterojunction solar cells were fabricated by sequential deposition of P3HT and C60 and the photovoltaic response measured. ... organic solar cells; conjugated polymers; poly(3-hexylthiophene); vacuum thermal deposition; thin films ...

Peter Kovacik; Giuseppe Sforazzini; Andrew G. Cook; Shawn M. Willis; Patrick S. Grant; Hazel E. Assender; Andrew A. R. Watt

2010-12-14T23:59:59.000Z

338

Flexible thermal cycle test equipment for concentrator solar cells  

DOE Patents [OSTI]

A system and method for performing thermal stress testing of photovoltaic solar cells is presented. The system and method allows rapid testing of photovoltaic solar cells under controllable thermal conditions. The system and method presents a means of rapidly applying thermal stresses to one or more photovoltaic solar cells in a consistent and repeatable manner.

Hebert, Peter H. (Glendale, CA); Brandt, Randolph J. (Palmdale, CA)

2012-06-19T23:59:59.000Z

339

MORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL  

E-Print Network [OSTI]

a relatively inexpensive option for the future solar cell technology, provided its efficiency increases beyondMORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL Biswajit Ray, Pradeep, West Lafayette, Indiana, USA ABSTRACT Polymer based bulk heterostructure (BH) solar cell offers

Alam, Muhammad A.

340

Simulations of solar cell absorption enhancement using resonant modes  

E-Print Network [OSTI]

Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array Jonathan Grandidier Michael G. Deceglie Dennis M. Callahan Harry A. Atwater #12;Simulations of solar cell for enhancing the absorption of thin-film amorphous silicon solar cells using periodic arrangements of resonant

Grandidier, Jonathan

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Conducting polymer and hydrogenated amorphous silicon hybrid solar cells  

E-Print Network [OSTI]

November 2005 An organic-inorganic hybrid solar cell with a p-i-n stack structure has been investigated for their potential in electronic devices such as organic light emitting diodes OLEDs , solar cells, photode- tectorsConducting polymer and hydrogenated amorphous silicon hybrid solar cells Evan L. Williams

Schiff, Eric A.

342

Solar Cells DOI: 10.1002/anie.200904492  

E-Print Network [OSTI]

* Renewable and green energy are the technological drivers of the future economy. Solar cells (SCs) are one-sensitized solar cells (DSSCs) that have a significantly enhanced energy conversion efficiency. The ZnO NWs grow. This research demonstrates a new approach from 2D to 3D solar cells with advantages of high efficiency, expanded

Wang, Zhong L.

343

Light Trapping in Solar Cells Using Resonant Nanostructures P. Spinelli  

E-Print Network [OSTI]

Light Trapping in Solar Cells Using Resonant Nanostructures P. Spinelli #12;Summary Photovoltaics solar cell is reduced, due to incomplete absorption of light. In this thesis, we investigate new ways of enhancing light absorption in Si solar cells by using nanostructures that show resonant interaction

van Rooij, Robert

344

Solar cell efficiency enhancement via light trapping in printable resonant  

E-Print Network [OSTI]

Solar cell efficiency enhancement via light trapping in printable resonant dielectric nanosphere for addressing the key challenge of light trapping in thin-film solar cells. We experimentally and theoretically the absorber, junction, and passivation layers. Recently, a number of innovative solar cell light

Atwater, Harry

345

Dielectric nanostructures for broadband light trapping in organic solar cells  

E-Print Network [OSTI]

Dielectric nanostructures for broadband light trapping in organic solar cells Aaswath Raman, Zongfu light trapping configuration for thin-film solar cells," Appl. Phys. Lett. 91, 243501 (2007). 8. M@stanford.edu Abstract: Organic bulk heterojunction solar cells are a promising candidate for low-cost next

Fan, Shanhui

346

Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells  

E-Print Network [OSTI]

Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells Vivian E. Ferry, Luke in thin film solar cells. In particular, the ability of plasmonic structures to localize light sunlight into guided modes in thin film Si and GaAs plasmonic solar cells whose back interface is coated

Atwater, Harry

347

Solar cell efficiency enhancement via light trapping in printable resonant  

E-Print Network [OSTI]

Solar cell efficiency enhancement via light trapping in printable resonant dielectric nanosphere for addressing the key challenge of light trapping in thin-film solar cells. We experimentally and theoretically, photovoltaics, resonant dielectric structures, solar cells * Corresponding author: e-mail jgrandid

Grandidier, Jonathan

348

Lead selenide nanowire solar cells via LPNE and its new found derivatives  

E-Print Network [OSTI]

type of solar cell in this third generation technology thatgeneration solar technology based on thick silicon cells,

Hujdic, Justin

2012-01-01T23:59:59.000Z

349

Modeling and control of thin film surface morphology: application to thin film solar cells  

E-Print Network [OSTI]

materials, thin film solar cell technology stands to benefitThin-film solar cells: Review of materials, technologies and

Huang, Jianqiao

2012-01-01T23:59:59.000Z

350

Achieving High Performance Polymer Tandem Solar Cells via Novel Materials Design  

E-Print Network [OSTI]

polymer solar cell could be a viable technology for spacetechnology must utilize the uniqueness of polymer solar cells.

Dou, Letian

2014-01-01T23:59:59.000Z

351

Method of fabricating a solar cell with a tunnel dielectric layer  

DOE Patents [OSTI]

Methods of fabricating solar cells with tunnel dielectric layers are described. Solar cells with tunnel dielectric layers are also described.

Dennis, Tim; Harrington, Scott; Manning, Jane; Smith, David; Waldhauer, Ann

2012-12-18T23:59:59.000Z

352

Method of fabricating a solar cell with a tunnel dielectric layer  

DOE Patents [OSTI]

Methods of fabricating solar cells with tunnel dielectric layers are described. Solar cells with tunnel dielectric layers are also described.

Dennis, Tim; Harrington, Scott; Manning, Jane; Smith, David D; Waldhauer, Ann

2014-04-29T23:59:59.000Z

353

Hafnium nitride for hot carrier solar cells  

Science Journals Connector (OSTI)

Abstract Hot carrier solar cells is an attractive technology with the potential of reaching high energy conversion efficiencies approaching the thermodynamic limit of infinitely stacked multi-junction solar cells: 65% under one sun and 86% under maximally concentrated. The hot carrier solar cell is conceptually simple consisting of two key components: absorber and energy selective contacts. High efficiencies are achieved by minimising the energy lost to thermalisaton of hot photo-generated carriers while absorbing majority of the solar spectrum. For this to be achieved, energy selective contacts are required to allow the extraction of carriers fast enough at an energy level above the electronic band edge. It is critical for the absorber to be able to maintain a hot carrier population for a sufficiently long time period for the extraction of carriers while they are ‘hot’. Bulk materials with a large gap between acoustic and optical branches in the phonon dispersion are predicted to exhibit slow hot carrier thermalisation rates. Hafnium nitride is such a material with a large gap in its phonon dispersion and is identified as a potential material to be used as a hot carrier absorber. Hafnium nitride has been deposited using reactive sputtering and characterised to investigate material properties and carrier cooling rates.

Simon Chung; Santosh Shrestha; Xiaoming Wen; Yu Feng; Neeti Gupta; Hongze Xia; Pyng Yu; Jau Tang; Gavin Conibeer

2014-01-01T23:59:59.000Z

354

27. 5-percent silicon concentrator solar cells  

SciTech Connect (OSTI)

Recent advances in silicon solar cells using the backside point-contact configuration have been extended resulting in 27.5-percent efficiencies at 10 W/sq cm (100 suns, 24 C), making these the most efficient solar cells reported to date. The one-sun efficiencies under an AM1.5 spectrum normalized to 100 mW/sq cm are 22 percent at 24 C based on the design area of the concentrator cell. The improvements reported here are largely due to the incorportation of optical light trapping to enhance the absorption of weakly absorbed near bandgap light. These results approach the projected efficiencies for a mature technology which are 23-24 percent at one sun and 29 percent in the 100-350-sun (10-35 W/sq cm) range. 10 references.

Sinton, R.A.; Kwark, Y.; Gan, J.Y.; Swanson, R.M.

1986-10-01T23:59:59.000Z

355

E-Print Network 3.0 - area solar cells Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

<< < 1 2 3 4 5 > >> 1 24th European Photovoltaic Solar Energy Conference, Hamburg, Germany, Sept. 2009 THE BURIED EMITTER SOLAR CELL CONCEPT Summary: back contacted solar cell...

356

Green Solar In 2009 researchers at Berkeley helped shift research into new solar cell materials by  

E-Print Network [OSTI]

Green Solar In 2009 researchers at Berkeley helped shift research into new solar cell materials also be considered. This project would examine the proposed solar cell materials and designs and create­2077). Given the proposed scales of PV adoption, the health and environmental impacts of PV technology should

Iglesia, Enrique

357

Solar Energy Materials & Solar Cells 75 (2003) 307312 Extreme radiation hardness and light-weighted  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 75 (2003) 307­312 Extreme radiation hardness and light annealing and minority-carrier injection-enhanced annealing are responsible for the recovery of photovoltaic of InP solar cells with much higher radiation resistance, conversion efficiency and power/weight ratio

Woodall, Jerry M.

358

WORKING QUANTUM EFFICIENCY OF CDTE SOLAR CELL Zimeng Cheng  

E-Print Network [OSTI]

in -Si thin film solar cells because there are more defects and surface effects. Figure 1. The diode darkWORKING QUANTUM EFFICIENCY OF CDTE SOLAR CELL Zimeng Cheng 1 , Kwok Lo 2 , Jingong Pan 1 , Dongguo Chen 1 , Tao Zhou 2 , Qi Wang 3 , George E. Georgiou 1 , Ken K. Chin 1 1 Apollo CdTe Solar Energy

359

High-Performance Nanostructured Inorganic?Organic Heterojunction Solar Cells  

Science Journals Connector (OSTI)

High-Performance Nanostructured Inorganic?Organic Heterojunction Solar Cells ... Although single-crystalline Si-based solar cells are successfully used to harvest solar energy, inexpensive production of photovoltaic (PV) devices at a cost comparable to the energy production cost of fossil fuels has become a critical issue to meet the global energy crisis. ... The photocurrent output of a solar cell based on exciton dissociation from sensitized solar cells depends on the quantum efficiencies of light harvesting (?lh), electron injection (?inj), and electron collection (?cc), which is determined by the competition between recombination and charge collection. ...

Jeong Ah Chang; Jae Hui Rhee; Sang Hyuk Im; Yong Hui Lee; Hi-jung Kim; Sang Il Seok; Md. K. Nazeeruddin; Michael Gratzel

2010-05-28T23:59:59.000Z

360

Innotech Solar AS formerly known as Solar Cell Repower | Open Energy  

Open Energy Info (EERE)

Innotech Solar AS formerly known as Solar Cell Repower Innotech Solar AS formerly known as Solar Cell Repower Jump to: navigation, search Name Innotech Solar AS (formerly known as Solar Cell Repower) Place Narvik, Norway Zip 8512 Sector Solar Product Norway-based developer of repowering technologies for solar cells. Coordinates 68.439515°, 17.43015° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":68.439515,"lon":17.43015,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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.
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to obtain the most current and comprehensive results.


361

Solar Energy Materials & Solar Cells 71 (2002) 511522 In situ Raman spectroscopy of the  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 71 (2002) 511­522 In situ Raman spectroscopy. In this situation, a low energy excitation (e.g. visible light) is needed to excite an electron to a neighboring

Nabben, Reinhard

362

Thermal behaviour of new crystalline semitransparent solar cell structure  

Science Journals Connector (OSTI)

This paper presents the structure of a novel semitransparent solar cell and its thermal behaviour, which cell can be used for building integrated applications. The crystalline self-made test cells can be manufactured using basic semiconductor technological ... Keywords: Building integrated photovoltaics, Semitransparent solar cell and thermal characteristics

Enik Bándy; Márta Rencz,

2013-11-01T23:59:59.000Z

363

CVD amorphous silicon solar cells  

SciTech Connect (OSTI)

Development of all-CVD TCO/p-i-n/metal/substrate a-Si devices made by CVD from disilane is reported. The reactor and conditions for depositing device quality CVD a-Si at growth rates up to 10 A/sec are described. Conductivity, optical properties and density of states of CVD i layers are described. Photovoltaic device characteristics of all - CVD and hybrid (CVD/GD) pin and nip devices are compared. Efficiencies up to 4% were achieved. An analysis of collection efficiency indicates a hole ..mu../tau/ of 1 - 4 X 10/sup -9/ cm/sup 2//V. Cell performance is consistent with a series connected double junction model.

Hegedus, S.S.; Baron, B.N.; Rocheleau, R.E.

1984-05-01T23:59:59.000Z

364

Fabrication and Characterization of Organic Solar Cells  

E-Print Network [OSTI]

logistical problems associated with solar energy. One of theor environmental problems. 1.2 Solar Energy As being thephotovoltaic solar energy all suffer from the problem of not

Yengel, Emre

2010-01-01T23:59:59.000Z

365

High-efficiency third-generation silicon solar cells  

Science Journals Connector (OSTI)

The results of investigating third-generation matrix silicon solar cells with an efficiency of more than 25% during conversion of concentrated solar radiation are given. Electrical and optical characteristics ......

D. S. Strebkov; V. I. Polyakov

2011-08-01T23:59:59.000Z

366

A High Efficiency Silicon Solar Cell Production Technology  

Science Journals Connector (OSTI)

BP Solar have developed a cost-effective production technology for the manufacture of high efficiency laser grooved buried grid (LGBG) crystalline silicon solar cells. The process has demonstrated 17–18% ... a ne...

N. B. Mason; D. Jordan; J. G. Summers

1991-01-01T23:59:59.000Z

367

Multijunction solar cells for conversion of concentrated sunlight to electricity  

Science Journals Connector (OSTI)

Solar-cell efficiencies have exceeded 40% in recent years. The keys to achieving these high efficiencies include: 1) use of multiple materials that span the solar spectrum, 2) growth...

Kurtz, Sarah; Geisz, John

2010-01-01T23:59:59.000Z

368

Light harvesting enhancement in solar cells with quasicrystalline plasmonic structures  

Science Journals Connector (OSTI)

Solar cells are important in the area of renewable energies. Since it is expensive to produce solar-grade silicon [Electrochem. Soc. Interface 17, 30 (2008)], especially thin-film...

Bauer, Christina; Giessen, Harald

2013-01-01T23:59:59.000Z

369

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.

370

Laboratory Directed Research and Development Program FY 2009 for Lawrence Berkeley National Laboratory  

E-Print Network [OSTI]

Dye Sensitized Solar Cells, Organic Light Emitting Cells,organic-inorganic hetero junction photovoltaic solar cellsolar cell devices. We will develop virus-based organic-

Hansen, Todd C.

2010-01-01T23:59:59.000Z

371

Study of organic solar cells with stacked bulk heterojunction structure  

Science Journals Connector (OSTI)

Organic solar cells with stacked bulk heterojunction(BHJ) are investigated ... as inter-layer to connect the upper BHJ cell and the lower cell. The structures are ITO/PEDOT:PSS/MEH...V OC) of a st...

Xin-fang Zhang; Zheng Xu; Su-ling Zhao; Fu-jun Zhang; Yan Li…

2008-07-01T23:59:59.000Z

372

Solar module having reflector between cells  

DOE Patents [OSTI]

A photovoltaic module comprising an array of electrically interconnected photovoltaic cells disposed in a planar and mutually spaced relationship between a light-transparent front cover member in sheet form and a back sheet structure is provided with a novel light-reflecting means disposed between adjacent cells for reflecting light falling in the areas between cells back toward said transparent cover member for further internal reflection onto the solar cells. The light-reflecting comprises a flexible plastic film that has been embossed so as to have a plurality of small V-shaped grooves in its front surface, and a thin light-reflecting coating on said front surface, the portions of said coating along the sides of said grooves forming light-reflecting facets, said grooves being formed so that said facets will reflect light impinging thereon back into said transparent cover sheet with an angle of incidence greater than the critical angle, whereby substantially all of the reflected light will be internally reflected from said cover sheet back to said solar modules, thereby increasing the current output of the module.

Kardauskas, Michael J. (Billerica, MA)

1999-01-01T23:59:59.000Z

373

Solar Junction Develops World Record Setting Concentrated Photovoltaic Solar Cell  

Office of Energy Efficiency and Renewable Energy (EERE)

EERE supported the development of Solar Junction's concentrated photovoltaic technology that set a world record for conversion efficiency.

374

Pokeberries Provide Boost for Solar Cells | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Pokeberries Provide Boost for Solar Cells Pokeberries Provide Boost for Solar Cells Pokeberries Provide Boost for Solar Cells May 20, 2010 - 2:41pm Addthis Stephen Graff Former Writer & editor for Energy Empowers, EERE What are the key facts? When the red dye from the pokeberries is spread over solar cells, it acts as a light absorber, boosting the technology's efficiency by about seven percent. The dye helps the cell's fibers capture more sunlight to convert into power. A weed Civil War soldiers used to write letters home may hold the secret to cheaper and more efficient solar energy today. Researchers at Wake Forest University's Center for Nanotechnology and Molecular Materials in North Carolina have discovered that red dye from the pokeberry weed makes their low-cost, fiber-based solar cells even more

375

Solare Cell Roof Tile And Method Of Forming Same  

DOE Patents [OSTI]

A solar cell roof tile includes a front support layer, a transparent encapsulant layer, a plurality of interconnected solar cells and a backskin layer. The front support layer is formed of light transmitting material and has first and second surfaces. The transparent encapsulant layer is disposed adjacent the second surface of the front support layer. The interconnected solar cells has a first surface disposed adjacent the transparent encapsulant layer. The backskin layer has a first surface disposed adjacent a second surface of the interconnected solar cells, wherein a portion of the backskin layer wraps around and contacts the first surface of the front support layer to form the border region. A portion of the border region has an extended width. The solar cell roof tile may have stand-offs disposed on the extended width border region for providing vertical spacing with respect to an adjacent solar cell roof tile.

Hanoka, Jack I. (Brookline, MA); Real, Markus (Oberberg, CH)

1999-11-16T23:59:59.000Z

376

Accounting for Localized Defects in the Optoelectronic Design of Thin-Film Solar Cells  

E-Print Network [OSTI]

Thin-film silicon solar cell technology," Progress insolar cells: modeling, materials and device technology.technologies competitive with traditional wafer based solar cells,

Deceglie, Michael G.

2014-01-01T23:59:59.000Z

377

Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy  

E-Print Network [OSTI]

of degradation of solar cells, since a material structure,higher effect on the solar cell’s stability and performance.en.wikipedia.org/wiki/Solar_cell_efficiency, accessed 10) J.

Bezryadina, Anna Sergeyevna

2012-01-01T23:59:59.000Z

378

Electrochemical Investigation of a Microbial Solar Cell Reveals a Nonphotosynthetic Biocathode Catalyst  

Science Journals Connector (OSTI)

...Electrochemical Investigation of a Microbial Solar Cell Reveals a Nonphotosynthetic Biocathode...Jose, California, USA c Microbial solar cells (MSCs) are microbial fuel cells...been hypothesized that microbial solar cells (MSCs) can continuously generate...

Sarah M. Strycharz-Glaven; Richard H. Glaven; Zheng Wang; Jing Zhou; Gary J. Vora; Leonard M. Tender

2013-04-19T23:59:59.000Z

379

Multiexciton Solar Cells of CuInSe2 Nanocrystals  

Science Journals Connector (OSTI)

Multiexciton Solar Cells of CuInSe2 Nanocrystals ... nanocrystals; photovoltaics; CIGS; multiple excitons; solar cells; photonic curing ... (4-8) Extraction of more than one electron per absorbed photon as electrical current in devices has also been reported,(9-12) with a few instances of device quantum efficiencies (QEs) exceeding 100%, PbS (internal QE only),(13) PbSe (external QE, EQE)(14) nanocrystal solar cells, and an organic device exhibiting a related process of singlet fission. ...

C. Jackson Stolle; Taylor B. Harvey; Douglas R. Pernik; Jarett I. Hibbert; Jiang Du; Dong Joon Rhee; Vahid A. Akhavan; Richard D. Schaller; Brian A. Korgel

2013-12-26T23:59:59.000Z

380

Elongated nanostructures for radial junction solar cells  

Science Journals Connector (OSTI)

In solar cell technology, the current trend is to thin down the active absorber layer. The main advantage of a thinner absorber is primarily the reduced consumption of material and energy during production. For thin film silicon (Si) technology, thinning down the absorber layer is of particular interest since both the device throughput of vacuum deposition systems and the stability of the devices are significantly enhanced. These features lead to lower cost per installed watt peak for solar cells, provided that the (stabilized) efficiency is the same as for thicker devices. However, merely thinning down inevitably leads to a reduced light absorption. Therefore, advanced light trapping schemes are crucial to increase the light path length. The use of elongated nanostructures is a promising method for advanced light trapping. The enhanced optical performance originates from orthogonalization of the light's travel path with respect to the direction of carrier collection due to the radial junction, an improved anti-reflection effect thanks to the three-dimensional geometric configuration and the multiple scattering between individual nanostructures. These advantages potentially allow for high efficiency at a significantly reduced quantity and even at a reduced material quality, of the semiconductor material. In this article, several types of elongated nanostructures with the high potential to improve the device performance are reviewed. First, we briefly introduce the conventional solar cells with emphasis on thin film technology, following the most commonly used fabrication techniques for creating nanostructures with a high aspect ratio. Subsequently, several representative applications of elongated nanostructures, such as Si nanowires in realistic photovoltaic (PV) devices, are reviewed. Finally, the scientific challenges and an outlook for nanostructured PV devices are presented.

Yinghuan Kuang; Marcel Di Vece; Jatindra K Rath; Lourens van Dijk; Ruud E I Schropp

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


381

Solar Energy Materials & Solar Cells 77 (2003) 319330 Structure and photoelectrochemical properties  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 77 (2003) 319­330 Letters Structure and photoelectrochemical a promis- ing strategy for solar energy conversion, with energy conversion efficiency as high monochromatic photon to current conversion efficiency, overall energy conversion yield (Z) and transient

Huang, Yanyi

382

Method of fabricating bifacial tandem solar cells  

DOE Patents [OSTI]

A method of fabricating on a semiconductor substrate bifacial tandem solar cells with semiconductor subcells having a lower bandgap than the substrate bandgap on one side of the substrate and with subcells having a higher bandgap than the substrate on the other including, first, growing a lower bandgap subcell on one substrate side that uses only the same periodic table group V material in the dislocation-reducing grading layers and bottom subcells as is present in the substrate and after the initial growth is complete and then flipping the substrate and growing the higher bandgap subcells on the opposite substrate side which can be of different group V material.

Wojtczuk, Steven J; Chiu, Philip T; Zhang, Xuebing; Gagnon, Edward; Timmons, Michael

2014-10-07T23:59:59.000Z

383

Computational Challenges for Nanostructure Solar Cells Project at NERSC  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Challenges for Challenges for Nanostructure Solar Cells Computational Challenges for Nanostructure Solar Cells ZZ2.jpg Key Challenges: Current nanostructure solar cells often have energy efficiencies well below that of traditional solar cells. To understand why, one must understand the complete photoelectron dynamics in a nanostructure - the photon absorption, exciton generation, exciton dissociation, carrier transport and carrier collection. However, the large number of surface states, the strong exciton binding energies, the nano-interfaces, the lack of doping, and the possibility of unintended internal electric fields make this a daunting task that requires a suite of techniques and computer codes offering different electronic structure methods and varying levels of

384

Photonic Crystals for Improving Organic Solar Cell Efficiency  

Science Journals Connector (OSTI)

An improvement of the organic solar cells efficiency is theoretically demonstrated by nanostructuring the active layer in the shape of a photonic crystal. An original process...

Duché, David; Escoubas, Ludovic; Simon, Jean-Jacques; Torchio, Philippe; Le Rouzo, Judikael; Vervisch, Wilfried; Flory, François; Labeyrie, Antoine; Roumiguières, Jean-Louis

385

Dielectric microconcentrators for efficiency enhancement in concentrator solar cells  

Science Journals Connector (OSTI)

Metal fingers typically cover more than 10% of the active area of concentrator solar cells. Microfabricated dielectric optical designs that can completely eliminate front contact...

Korech, Omer; Gordon, Jeffrey M; Katz, Eugene A; Feuermann, Daniel; Eisenberg, Naftali

2007-01-01T23:59:59.000Z

386

Broadband Diffractive Optics for Enhancing the Efficiency of Solar Cells  

Science Journals Connector (OSTI)

We propose a broadband diffractive optics based spectrum splitting approach to enhance the efficiency of solar cells. Numerical simulations indicate ~27% and ~45% increase in output...

Menon, Rajesh; Wang, Peng; Mohammed, Nabil

387

Nanoarrays for Light Management in Thin Film Solar Cells  

Science Journals Connector (OSTI)

We report the use of plasmonic and photonic nanoarray to achieve light management in thin film solar cells. Theoretical and experimental data will be presented.

Ji, Jin; Nasr, Magued B; McCutcheon, Murray W; Herring, Cy

388

Ultrafast Carrier RelaxationProcesses in Advanced Concept Solar Cells  

Science Journals Connector (OSTI)

We discuss short time carrier relaxation in advanced concept solar cells conditions using ensemble Monte Carlo (EMC) simulation coupled with rate equation and thermodynamic models, to...

Goodnick, Stephen M; Honsberg, Christiana; Zou, Yongjie

389

Progress on nanopatterned front electrodes for organic solar cells  

Science Journals Connector (OSTI)

We present our recent progress in the development of nanophotonic front electrodes for improved light management in organic solar cell. Experimental results and 3D electromagnetic...

Paetzold, Ulrich W; Smeets, Michael; Hadipour, Afshin; Cheyns, David

390

Device Physics of Nanoscale Interdigitated Solar Cells: Preprint  

SciTech Connect (OSTI)

This paper uses multidimensional device simulation to explore the physics and solar cell performance of interdigitated p-n junctions for material parameters relevant to the postulated conditions.

Metzger, W. K.; Levi, D.

2008-05-01T23:59:59.000Z

391

Award-Winning Etching Process Cuts Solar Cell Costs  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

into electricity. Manufacturers have tried to minimize the reflection of sunlight off of solar cells by first chemically etching micrometers-deep structures into the surface of...

392

OPVs and Solar Cells: The Basics | University of Texas Energy...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

environmental crises emanating from greenhouse gas production. Current solar cell technologies are largely silicon-based. Devices used for human energy consumption yield...

393

Concentrator Solar Cell Modules and Systems Developed in Japan  

Science Journals Connector (OSTI)

Dissemination of photovoltaic (PV) systems has advanced, and solar cell module production has also significantly increased in ... Japan organized by the New Energy and Industrial Technology Development Organizati...

2007-01-01T23:59:59.000Z

394

Polymer solar cell as an emerging PV technology  

Science Journals Connector (OSTI)

In the presentation, I will present progresses in polymer solar cell in recent years. Advances in material, device structure, morphology are the focus of the talk. ...

Li, Gang

395

Reliable and economical circuit I V characterization solar cells  

Science Journals Connector (OSTI)

A transistorized circuit for solar cells which is easy to assemble and use for undergraduate teaching laboratories is described.(AIP)

Y. H. Muoy; J. P. Charles; M. Adbelkrim

1981-01-01T23:59:59.000Z

396

Structural Characterization of the Active Layer in Organic Solar Cells.  

E-Print Network [OSTI]

??Organic solar cells belong to a class of devices where the morphology of the active layer has a large impact on device performance. However, characterization… (more)

Kozub, Derek

2011-01-01T23:59:59.000Z

397

Dielectric nanostructures for broadband light trapping in organic solar cells  

Science Journals Connector (OSTI)

We investigate broadband light trapping using only dielectric components to improve organic solar cell efficiency. We show that substantial absorption and photocurrent enhancement is...

Raman, Aaswath; Yu, Zongfu; Fan, Shanhui

398

Dielectric nanostructures for broadband light trapping in organic solar cells  

Science Journals Connector (OSTI)

Organic bulk heterojunction solar cells are a promising candidate for low-cost next-generation photovoltaic systems. However, carrier extraction limitations necessitate thin active...

Raman, Aaswath; Yu, Zongfu; Fan, Shanhui

2011-01-01T23:59:59.000Z

399

Photoinduced Giant Dielectric Constant in Lead Halide Perovskite Solar Cells  

Science Journals Connector (OSTI)

Perovskite solar cells have emerged as a major topic of research in photovoltaics because of the promising properties of the solution processed, low cost, and high efficiency solar cells for large-scale solar energy production. ... Illumination of the perovskite samples produces a significant increase of charge carrier density in the perovskite layer due to the high extinction coefficient of organic–inorganic lead halide perovskite. ... The effect of electron- and hole-selective contacts in the final cell performance of hybrid lead halide perovskite, CH3NH3PbI3, solar cells has been systematically analyzed by impedance spectroscopy. ...

Emilio J. Juarez-Perez; Rafael S. Sanchez; Laura Badia; Germá Garcia-Belmonte; Yong Soo Kang; Ivan Mora-Sero; Juan Bisquert

2014-06-23T23:59:59.000Z

400

Solution-Processed Solar Cells using Colloidal Quantum Dots ...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of solar cells and light sensors based on solution-processed semiconductors." He is a Fellow of the IEEE "... for contributions to colloidal quantum dot optoelectronic devices."...

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Structure of All-Polymer Solar Cells Impedes Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

thin films of semiconducting polymers as a possible alternative to silicon-based solar cells. Such devices would have the advantages of being cheap to produce,...

402

Diffraction: Enhanced Light Absorption of Solar Cells and Photodetecto...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Materials Advanced Materials Find More Like This Return to Search Diffraction: Enhanced Light Absorption of Solar Cells and Photodetectors Sandia National Laboratories Contact...

403

Molecular Weight Effect on the Efficiency of Polymer Solar Cells  

Science Journals Connector (OSTI)

Molecular Weight Effect on the Efficiency of Polymer Solar Cells ... § 1-Material Inc., 2290 Chemin St-François, Dorval, Quebec, H9P 1K2, Canada ...

Chang Liu; Kai Wang; Xiaowen Hu; Yali Yang; Chih-Hao Hsu; Wei Zhang; Steven Xiao; Xiong Gong; Yong Cao

2013-11-01T23:59:59.000Z

404

An Overview of Solar Cell Technology Mike McGehee  

E-Print Network [OSTI]

An Overview of Solar Cell Technology Mike McGehee Materials Science and Engineering Global ClimateWatt and Evergreen Solar went bankrupt Jon Stewart, The Daily Show Solyndra, SpectraWatt and Evergreen Solar went provide 20 % of that. It takes a panel rated at 5 W, to average 1 W of power through the day and year, sog

McGehee, Michael

405

Folded-Light-Path Colloidal Quantum Dot Solar Cells  

E-Print Network [OSTI]

Folded-Light-Path Colloidal Quantum Dot Solar Cells Ghada I. Koleilat*, Illan J. Kramer*, Chris T, Canada. Colloidal quantum dot photovoltaics combine low-cost solution processing with quantum size-effect tuning to match absorption to the solar spectrum. Rapid advances have led to certified solar power

406

Photonic Design: From Fundamental Solar Cell Physics to Computational Inverse Design  

E-Print Network [OSTI]

of next-generation solar technologies. Part II approachesfor next-generation solar technologies. Conclusions Thislimit for any solar cell technology will require light

Miller, Owen Dennis

2012-01-01T23:59:59.000Z

407

Fabrication and Characterization of Organic Solar Cells  

E-Print Network [OSTI]

Sources  .1  1.2 Solar Energy ..sources available are largely covered by hydropower, biomass energy, solar energy,Solar Energy As being the largest among carbon-neutral energy source,

Yengel, Emre

2010-01-01T23:59:59.000Z

408

Broadband omnidirectional antireflection coatings for metal-backed solar cells optimized using simulated annealing algorithm incorporated with solar spectrum  

Science Journals Connector (OSTI)

Broadband omnidirectional antireflection (AR) coatings for solar cells optimized using simulated annealing (SA) algorithm incorporated with the solar (irradiance) spectrum at Earth’s...

Chang, Yin-Jung; Chen, Yu-Ting

2011-01-01T23:59:59.000Z

409

Efficiency improvement of silicon nanostructure-based solar cells  

Science Journals Connector (OSTI)

Solar cells based on a high-efficiency silicon nanostructure (SNS) were developed using a two-step metal-assisted electroless etching (MAEE) technique, phosphorus silicate glass (PSG) doping and screen printing. This process was used to produce solar cells with a silver nitrate (AgNO3) etching solution in different concentrations. Compared to cells produced using the single MAEE technique, SNS-based solar cells produced with the two-step MAEE technique showed an increase in silicon surface coverage of ~181.1% and a decrease in reflectivity of ~144.3%. The performance of the SNS-based solar cells was found to be optimized (~11.86%) in an SNS with a length of ~300 nm, an aspect ratio of ~5, surface coverage of ~84.9% and a reflectivity of ~6.1%. The ~16.8% increase in power conversion efficiency (PCE) for the SNS-based solar cell indicates good potential for mass production.

Bohr-Ran Huang; Ying-Kan Yang; Wen-Luh Yang

2014-01-01T23:59:59.000Z

410

Laser beam apparatus and method for analyzing solar cells  

DOE Patents [OSTI]

A laser beam apparatus and method for analyzing, inter alia, the current versus voltage curve at the point of illumination on a solar cell and the open circuit voltage of a solar cell. The apparatus incorporates a lock-in amplifier, and a laser beam light chopper which permits the measurement of the AC current of the solar cell at an applied DC voltage at the position on the solar cell where the cell is illuminated and a feedback scheme which permits the direct scanning measurements of the open circuit voltage. The accuracy of the measurement is a function of the intensity and wavelength of the laser light with respect to the intensity and wavelength distribution of sunlight and the percentage the dark current is at the open circuit voltage to the short circuit current of the solar cell.

Staebler, David L. (Lawrenceville, NJ)

1980-01-01T23:59:59.000Z

411

A Review of Thin Film Silicon for Solar Cell Applications  

E-Print Network [OSTI]

A Review of Thin Film Silicon for Solar Cell Applications May 99 Contents 1 Introduction 3 2 Low 2.2.3 Deposition onto foreign substrates with the intention of improving crystallographic nature Field Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 11

412

Physics and technologies of superhigh-efficiency tandem solar cells  

Science Journals Connector (OSTI)

The present status of superhigh-efficiency tandem solar cells has been reviewed and the key issues for realizing superhigh-efficiency have been discussed. The mechanical, stacked, three-junction cells of monol...

M. Yamaguchi

1999-09-01T23:59:59.000Z

413

Experimental analysis of I–V characteristics of solar cells  

Science Journals Connector (OSTI)

This paper describes a simple experiment that can be performed by undergraduate students to derive the values of solar cell parameters from the plot of the output load current versus the voltage at the terminals of the cell.

P. Mialhe; J. Charette

1983-01-01T23:59:59.000Z

414

Interfacial processes in small molecule organic solar cells  

Science Journals Connector (OSTI)

This paper presents an overview of the recent progress of small molecule organic solar cells mainly based on the previous works of ... mainly focus on the interfacial processes in the cells. The dissociation of e...

WenBin Li; QunLiang Song; XiaoYu Sun…

2010-02-01T23:59:59.000Z

415

ADOPT-A-CELL PROGRAM Help support the success of the CalSol solar team by  

E-Print Network [OSTI]

ADOPT-A-CELL PROGRAM Help support the success of the CalSol solar team by adopting a small part. $20: Solar Encapsulation High-tech solar lamination improves solar energy collection and increases the durability of solar cells. The money will go towards laminating one single solar cell. $50: Solar Cell Solar

Mofrad, Mohammad R. K.

416

CRADA Final Report: Process development for hybrid solar cells  

SciTech Connect (OSTI)

TCF funding of a CRADA between LBNL and RSLE leveraged RSLE's original $1M investment in LBNL research and led to development of a solar cell fabrication process that will bring the high efficiency, high voltage hybrid tandem solar cell closer to commercialization. RSLE has already built a pilot line at its Phoenix, Arizona site.

Ager, Joel W

2011-02-14T23:59:59.000Z

417

CURRENT NEWS Sandwich Solar Cells May See Off Silicon  

E-Print Network [OSTI]

CURRENT NEWS Sandwich Solar Cells May See Off Silicon May 24, 2010 A new manufacturing technique of devices using GaAs chips manufactured in multilayer stacks: light sensors, high-speed transistors and solar cells. The authors also provide a detailed cost comparison. Another advantage of the multilayer

Rogers, John A.

418

Fundamental limit of nanophotonic light trapping in solar cells  

E-Print Network [OSTI]

Fundamental limit of nanophotonic light trapping in solar cells Zongfu Yu1 , Aaswath Raman and is becoming increasingly urgent for current solar cell research. The standard theory of light trapping) Establishing the fundamental limit of nanophotonic light-trapping schemes is of paramount importance

Fan, Shanhui

419

The Design of Organic Polymers and Small Molecules to Improve the Efficiency of Excitonic Solar Cells  

E-Print Network [OSTI]

bulk heterojunction organic solar cells, blends of a p-typecells, including organic solar cells and dye-sensitizedin a bilayer organic solar cell. At top is a cross section

Armstrong, Paul Barber

2010-01-01T23:59:59.000Z

420

FABRICATION AND CHARACTERIZATION OF 3-D ALL POLYMER FLEXIBLE SOLAR CELL  

E-Print Network [OSTI]

....................................................................................3 2 LITERATURE SURVEY ON THIN FILM ANDORGANIC/TANDEM SOLAR CELL........................................................................7 2.3 Thin Film Solar CellFABRICATION AND CHARACTERIZATION OF 3-D ALL POLYMER FLEXIBLE SOLAR CELL _______________ A Thesis

Kassegne, Samuel Kinde

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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.
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to obtain the most current and comprehensive results.


421

NANOSTRUCTURED SOLAR CELLS FOR HIGH EFFICIENCY PHOTOVOLTAICS Christiana B. Honsberg1  

E-Print Network [OSTI]

for solar energy conversion. NANOSTRUCTURED SOLAR CELLS Nanostructured solar cells offer several advantages to contribute to high efficiency devices NEW CONCEPTS FOR SOLAR CELLS An important advantage for nanostructuredNANOSTRUCTURED SOLAR CELLS FOR HIGH EFFICIENCY PHOTOVOLTAICS Christiana B. Honsberg1 , Allen M

Honsberg, Christiana

422

Engineering Metal Impurities in Multicrystalline Silicon Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering Metal Impurities in Multicrystalline Silicon Solar Cells Print Engineering Metal Impurities in Multicrystalline Silicon Solar Cells Print Transition metals are one of the main culprits in degrading the efficiency of multicrystalline solar cells. With a suite of x-ray microprobe techniques, a multi-institutional collaboration led by researchers from the University of California, Berkeley, and Berkeley Lab studied the distribution of metal clusters in a variety of multicrystalline solar cells before and after processing. Their discovery that the size, spatial distribution, and chemical binding of metals within clusters is just as important as the total metal concentration in limiting the performance of multicrystalline silicon solar cells led to the concept of defect engineering by optimizing growth and processing sequences to trap metals in their least harmful state.

423

High-Efficiency Solar Cell Concepts: Physics, Materials, and Devices  

SciTech Connect (OSTI)

Over the past three decades, significant progress has been made in the area of high-efficiency multijunction solar cells, with the effort primarily directed at current-matched solar cells in tandem. The key materials issues here have been obtaining semiconductors with the required bandgaps for sequential absorption of light in the solar spectrum and that are lattice matched to readily available substrates. The GaInP/GaAs/Ge cell is a striking example of success achieved in this area. Recently, several new approaches for high-efficiency solar cell design have emerged, that involve novel methods for tailoring alloy bandgaps, as well as alternate technologies for hetero-epitaxy of III-V's on Si. The advantages and difficulties expected to be encountered with each approach will be discussed, addressing both the materials issues and device physics whilst contrasting them with other fourth-generation solar cell concepts.

Mascarenhas, A.; Francoeur, S.; Seong, M. J.; Fluegel, B.; Zhang, Y.; Wanlass, M. W.

2005-01-01T23:59:59.000Z

424

Engineering Metal Impurities in Multicrystalline Silicon Solar Cells  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering Metal Impurities in Multicrystalline Silicon Solar Cells Print Engineering Metal Impurities in Multicrystalline Silicon Solar Cells Print Transition metals are one of the main culprits in degrading the efficiency of multicrystalline solar cells. With a suite of x-ray microprobe techniques, a multi-institutional collaboration led by researchers from the University of California, Berkeley, and Berkeley Lab studied the distribution of metal clusters in a variety of multicrystalline solar cells before and after processing. Their discovery that the size, spatial distribution, and chemical binding of metals within clusters is just as important as the total metal concentration in limiting the performance of multicrystalline silicon solar cells led to the concept of defect engineering by optimizing growth and processing sequences to trap metals in their least harmful state.

425

Quantum Solar Energy Conversion and Application to Organic Solar Cells  

Science Journals Connector (OSTI)

When studying the limits of solar energy conversion, either by thermal or quantum processes, the sun has traditionally been treated as a blackbody (thermal equilibrium) radiator with surface temperature 5 800 ...

Gottfried H. Bauer; Peter Würfel

2003-01-01T23:59:59.000Z

426

Efficiency of silicon solar cells containing chromium  

DOE Patents [OSTI]

Efficiency of silicon solar cells containing about 10.sup.15 atoms/cm.sup.3 of chromium is improved about 26% by thermal annealing of the silicon wafer at a temperature of 200.degree. C. to form chromium precipitates having a diameter of less than 1 Angstrom. Further improvement in efficiency is achieved by scribing laser lines onto the back surface of the wafer at a spacing of at least 0.5 mm and at a depth of less than 13 micrometers to preferentially precipitate chromium near the back surface and away from the junction region of the device. This provides an economical way to improve the deleterious effects of chromium, one of the impurities present in metallurgical grade silicon material.

Frosch, Robert A. Administrator of the National Aeronautics and Space (New Port Beach, CA); Salama, Amal M. (New Port Beach, CA)

1982-01-01T23:59:59.000Z

427

Solar cells incorporating light harvesting arrays  

DOE Patents [OSTI]

A solar cell incorporates a light harvesting array that comprises: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to the first electrode, each of the light harvesting rods comprising a polymer of Formula I: X.sup.1.paren open-st.X.sup.m+1).sub.m (I) wherein m is at least 1, and may be from two, three or four to 20 or more; X.sup.1 is a charge separation group (and preferably a porphyrinic macrocycle, which may be one ligand of a double-decker sandwich compound) having an excited-state of energy equal to or lower than that of X.sup.2 ; and X.sup.2 through X.sup.m+1 are chromophores (and again are preferably porphyrinic macrocycles).

Lindsey, Jonathan S. (Raleigh, NC); Meyer, Gerald J. (Baltimore, MD)

2002-01-01T23:59:59.000Z

428

Influence of substrate refractive index and antireflection coating on excitons generation in organic solar cell  

Science Journals Connector (OSTI)

Solar cells are manufactured with the application of inorganic semiconductors and with the application of organic semiconductors. Organic solar cells have presently lower efficiency than their inorganic...2010).

Ewa Gondek

2014-01-01T23:59:59.000Z

429

Passive cooling of concentrated solar cells using phase change material thermal storage.  

E-Print Network [OSTI]

??High solar cell temperature has always been a major concern when designing a concentrated solar power (CSP) system. Exceeding the operational cell temperature can result… (more)

Tan, L

2013-01-01T23:59:59.000Z

430

E-Print Network 3.0 - aluminium arsenide solar cells Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

manufacturing technique holds Summary: arsenide chips manufactured in multilayer stacks: light sensors, high-speed transistors and solar cells... the photovoltaic cells that solar...

431

Solar Energy Materials & Solar Cells 58 (1999) 199}208 The behaviour of Na implanted into Mo thin "lms  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 58 (1999) 199}208 The behaviour of Na implanted into Mo thin, As ngstro( m Solar Center, P.O. Box 534, SE-751 21 Uppsala, Sweden Department of Materials Science Mo thin "lms used as back contacts for Cu(In,Ga)Se solar cells. The samples were analysed

Rockett, Angus

432

Pennsylvania Company Develops Solar Cell Printing Technology | Department  

Broader source: Energy.gov (indexed) [DOE]

Pennsylvania Company Develops Solar Cell Printing Technology Pennsylvania Company Develops Solar Cell Printing Technology Pennsylvania Company Develops Solar Cell Printing Technology April 15, 2010 - 4:20pm Addthis Joshua DeLung What does this project do? The technology uses Plextronics' conductive inks that can be printed by manufacturers worldwide to make solar cells, potentially as easily as they might print a newspaper. This method is much less expensive than many others in terms of raw materials and manufacturing costs. Pittsburgh-based Plextronics, plans to commercialize low-cost solar power globally with its conductive ink technologies, a goal that has been helped by a government incubator program focused on finding marketable prototypes by 2012. "For any technology to be truly successful, you have to enable a new

433

Photo of the Week: Butterflies, Crystal Nanostructures and Solar Cell  

Broader source: Energy.gov (indexed) [DOE]

Butterflies, Crystal Nanostructures and Solar Butterflies, Crystal Nanostructures and Solar Cell Research Photo of the Week: Butterflies, Crystal Nanostructures and Solar Cell Research October 26, 2012 - 11:44am Addthis What do butterflies and solar cell research have in common? Both have been developing tiny crystals that selectively reflect colors. Over millions of years of evolution, butterfly wings have developed the tiny crystal nanostructures that give butterflies their vivid colors. At Argonne National Laboratory, scientists are working to manufacture these crystals, which could one day be used to create "greener" and more efficient paints, fiber optics and solar cells. In this photo, the iridescent scales of an emerald-patched Cattleheart butterfly are magnified 20 times to highlight the crystals that selectively reflect green colors. | Photo courtesy of Argonne National Laboratory.

434

Bright future for liquid electrolyte solar cells?  

Science Journals Connector (OSTI)

... development into a technology that could rival the more familiar solid-state p-n junction solar ...solarcells ...

A. Hamnett; S. Dennison

1982-12-23T23:59:59.000Z

435

Engineering: See-through solar cells  

Science Journals Connector (OSTI)

... windows of houses and skyscrapers could one day be harvested thanks to the creation of solar ...solarcells ...

2011-05-25T23:59:59.000Z

436

Performance of Ultra High Efficiency Thin Germanium P-N Junction Solar Cells Intended for Solar Thermophotovoltaic Application  

Science Journals Connector (OSTI)

The theoretical upper limit conversion efficiency as a function of cell thickness and ... is calculated for a germanium p-n junction solar cell intended for solar thermophotovoltaic energy conversion which incorp...

E. S. Vera; J. J. Loferski; M. Spitzer…

1981-01-01T23:59:59.000Z

437

Solar Energy Materials & Solar Cells 91 (2007) 17261732 Optical and structural properties of Ta2O5CeO2 thin films  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 91 (2007) 1726­1732 Optical and structural properties of Ta2O5

Thirumalai, Devarajan

438

The Shockley-Queisser limit for nanostructured solar cells  

E-Print Network [OSTI]

The Shockley-Queisser limit describes the maximum solar energy conversion efficiency achievable for a particular material and is the standard by which new photovoltaic technologies are compared. This limit is based on the principle of detailed balance, which equates the photon flux into a device to the particle flux (photons or electrons) out of that device. Nanostructured solar cells represent a new class of photovoltaic devices, and questions have been raised about whether or not they can exceed the Shockley-Queisser limit. Here we show that single-junction nanostructured solar cells have a theoretical maximum efficiency of 42% under AM 1.5 solar illumination. While this exceeds the efficiency of a non- concentrating planar device, it does not exceed the Shockley-Queisser limit for a planar device with optical concentration. We conclude that nanostructured solar cells offer an important route towards higher efficiency photovoltaic devices through a built-in optical concentration.

Xu, Yunlu; Munday, Jeremy N

2014-01-01T23:59:59.000Z

439

Method for forming indium oxide/n-silicon heterojunction solar cells  

DOE Patents [OSTI]

A high photo-conversion efficiency indium oxide/n-silicon heterojunction solar cell is spray deposited from a solution containing indium trichloride. The solar cell exhibits an Air Mass One solar conversion efficiency in excess of about 10%.

Feng, Tom (Morris Plains, NJ); Ghosh, Amal K. (New Providence, NJ)

1984-03-13T23:59:59.000Z

440

Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics  

E-Print Network [OSTI]

energy sources, the potential of solar energy is the mostuse of solar cells as an energy source [2]. Therefore, thinspread use of solar cells as a renewable energy source [2].

Chung, Choong-Heui

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Depleted-Heterojunction Colloidal Quantum Dot Solar Cells  

E-Print Network [OSTI]

Depleted-Heterojunction Colloidal Quantum Dot Solar Cells Andras G. Pattantyus-Abraham,, Illan J and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada-circuit voltage (Voc) and fill factor (FF). The power conversion efficiency ( ) for an in- put solar intensity

442

Current- and lattice-matched tandem solar cell  

DOE Patents [OSTI]

A multijunction (cascade) tandem photovoltaic solar cell device is fabricated of a Ga/sub x/In/sub 1-x/P (0.505 equal to or less than x equal to or less than 0.515) top cell semiconductor lattice-matched to a GaAs bottom cell semiconductor at a low resistance heterojunction, preferably a p/sup +//n/sup +/ heterojunction between the cells. The top and bottom cells are both lattice-matched and current-matched for high efficiency solar radiation conversion to electrical energy.

Olson, J.M.

1985-10-21T23:59:59.000Z

443

Detailed balance theory of excitonic and bulk heterojunction solar cells  

Science Journals Connector (OSTI)

A generalized solar cell model for excitonic and classical bipolar solar cells describes the combined transport and interaction of electrons, holes, and excitons in accordance with the principle of detailed balance. Conventional inorganic solar cells, single-phase organic solar cells and bulk heterojunction solar cells, i.e., nanoscale mixtures of two organic materials, are special cases of this model. For high mobilities, the compatibility with the principle of detailed balance ensures that our model reproduces the Shockley-Queisser limit irrespective of how the energy transport is achieved. For less ideal devices distinct differences become visible between devices that are described by linear differential equations and those with nonlinear effects, such as a voltage-dependent collection in bipolar p-i-n-type devices. These differences in current-voltage characteristics are also decisive for the validity of the reciprocity theorem between photovoltaic quantum efficiency and electroluminescent emission. Finally, we discuss the effect of band offset at the heterointerface in a bulk heterojunction cell and the effect of the average distances between these heterointerfaces on the performance of a solar cell in order to show how our detailed balance model includes also these empirically important quantities.

Thomas Kirchartz; Julian Mattheis; Uwe Rau

2008-12-29T23:59:59.000Z

444

Dispersion, Wave Propagation and Efficiency Analysis of Nanowire Solar Cells  

Science Journals Connector (OSTI)

We analyze the electromagnetic properties of InP/InAs nanowire solar cells for different geometries. We address both eigenvalue calculations to determine the wave propagation as well...

Kupec, J; Witzigmann, B

2009-01-01T23:59:59.000Z

445

Plasmonic Scattering Enhancement of Quantum Well Solar Cells  

Science Journals Connector (OSTI)

Quantum-well solar cells offer a route to photovoltaic power conversion with predicted efficiencies of 45-63%. We discuss methods of improving their performance by engineering photon...

Yu, Edward T

446

Efficient light-trapping nanostructures in thin silicon solar cells  

E-Print Network [OSTI]

We examine light-trapping in thin crystalline silicon periodic nanostructures for solar cell applications. Using group theory, we show that light-trapping can be improved over a broad band when structural mirror symmetry ...

Han, Sang Eon

447

Vertical morphology in solution-processed organic solar cells  

Science Journals Connector (OSTI)

Motivated by a report of an all-solution processed P3HT/PCBM ‘bilayer’ organic solar cell, we have investigated the vertical morphology by using a combination of...

Lee, Kwan H; Schwenn, Paul E; Smith, Arthur R G; Cavaye, Hamish; Shaw, Paul E; James, Michael; Krueger, Karsten B; Gentle, Ian R; Meredith, Paul; Burn, Paul L

448

Laser scribing of CIGS based thin films solar cells  

Science Journals Connector (OSTI)

Laser scribing tests on CIGS based thin films solar cells have been performed. The obtained high quality incisions show that laser scribing is a valuable tool for producing low-cost...

Sozzi, Michele; Menossi, Daniele; Bosio, Alessio; Cucinotta, Annamaria; Romeo, Nicola; Selleri, Stefano

449

GaAs solar cells close to the thermodynamic limit  

Science Journals Connector (OSTI)

The efficiency of GaAs solar cells can be increased by applying angularly selective filters. It is shown in terms of detailed balance model, why this happens and the concept is proven...

Hoehn, Oliver; Kraus, Tobias; Bauhuis, Gerard; Schwarz, Ulrich T; Bläsi, Benedikt

450

Morphology and Performance of Polymer-Based Solar Cells  

Science Journals Connector (OSTI)

Excitons in polymer-based solar cells are short lived placing great emphasis on construction of a nanoscale morphology of electron donor and acceptor. Here we discuss how processing...

Mackay, Michael E

451

New functional polymers for sensors, smart materials and solar cells  

E-Print Network [OSTI]

Organic polymers can be used as the active component of sensors, smart materials, chemical-delivery systems and the active layer of solar cells. The rational design and modification of the chemical structure of polymers ...

Lobez Comeras, Jose Miguel

2012-01-01T23:59:59.000Z

452

Holographic Thin Film System for Multijunction Solar Cells  

Science Journals Connector (OSTI)

The efficiency of photovoltaic generators based on different semiconductor materials with optimized band gaps can achieve considerably higher values than those obtained with single junction solar cells. For th...

W. H. Bloss; M. Griesinger; E. R. Reinhardt

1983-01-01T23:59:59.000Z

453

The renaissance of hybrid solar cells: progresses, challenges, and perspectives  

E-Print Network [OSTI]

understanding of optoelectronic interactions in organic–inorganic hybrid systems. In this article, we review the state-of-the-art progress in hybrid bulk heterojunction solar cells, covering new materials design, interfacial interaction, and processing control...

Feng, Gao; Ren, Shenqiang; Jianpu, Wang

2013-06-12T23:59:59.000Z

454

Putting together the full solar tandem cell | Center for Bio...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Center Video Library Bisfuel Picture Gallery Putting together the full solar tandem cell 24 Oct 2012 Ben Sherman is a graduate student working in the Gust-Moore-Moore...

455

Simulation of iron impurity gettering in crystalline silicon solar cells  

E-Print Network [OSTI]

This work discusses the Impurity-to-Efficiency (12E) simulation tool and applet. The 12E simulator models the physics of iron impurity gettering in silicon solar cells during high temperature processing. The tool also ...

Powell, Douglas M. (Douglas Michael)

2012-01-01T23:59:59.000Z

456

Process Technology and Advanced Concepts: Organic Solar Cells (Fact Sheet)  

SciTech Connect (OSTI)

Capabilities fact sheet for the National Center for Photovoltaics: Process Technology and Advanced Concepts: Organic Solar Cell that includes scope, core competencies and capabilities, and contact/web information.

Not Available

2011-06-01T23:59:59.000Z

457

Development of Inorganic Solar Cells by Nano-technology  

Science Journals Connector (OSTI)

Inorganic solar cells, as durable photovoltaic devices for harvesting electric energy from sun light, have received tremendous attention due to the fear of exhausting the earth’s energy resources and damaging ...

Yafei Zhang; Huijuan Geng; Zhihua Zhou; Jiang Wu; Zhiming Wang…

2012-06-01T23:59:59.000Z

458

New Wire Silicon Slicing Technology for Solar Cell  

Science Journals Connector (OSTI)

Firstly a prototype machine using Multicutting wire technology (MCWT) is described. The influence of ... and damaged layer are suitable for the present solar cell technology. Further decreasing cost steps are com...

H. Lauvray; A. Talpied; J. P. Besselere

1981-01-01T23:59:59.000Z

459

Advanced cost-effective crystalline silicon solar cell technologies  

Science Journals Connector (OSTI)

An overview is given concerning current industrial technologies, near future improvements and medium-term developments in the field of industrially viable crystalline silicon terrestrial solar cell fabrication (without concentration).

J.F Nijs; J Szlufcik; J Poortmans; S Sivoththaman; R.P Mertens

2001-01-01T23:59:59.000Z

460

Light Incoupling and Optical Optimisation of Organic Solar Cells  

Science Journals Connector (OSTI)

Due to the thin film nature of organic solar cells, light-trapping and interference effects play a significant role. We discuss here the utilisation of these effects in optimisation...

Meiß, Jan; Schueppel, Rico; Timmreck, Ronny; Furno, Mauro; Uhrich, Christian; Sonntag, Stefan; Gnehr, Wolf-Michael; Pfeiffer, Martin; Leo, Karl; Riede, Moritz

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Non-fullerene acceptors for organic solar cells  

Science Journals Connector (OSTI)

Solar cells based on organic semiconductor molecules are a promising alternative to ... simple production, and good mechanical properties. Effective organic photocells are based on a heterojunction using an activ...

V. A. Trukhanov; D. Yu. Paraschuk

2014-09-01T23:59:59.000Z

462

Optical design of organic solar cell with hybrid plasmonic system  

Science Journals Connector (OSTI)

We propose a novel optical design of organic solar cell with a hybrid plasmonic system, which comprises a plasmonic cavity coupled with a dielectric core-metal shell nanosphere. From a...

Sha, Wei E I; Choy, Wallace C H; Chen, Yongpin P; Chew, Weng Cho

2011-01-01T23:59:59.000Z

463

Graphene Quantum Dot-Based Organic Solar Cells  

Science Journals Connector (OSTI)

Current research in organic photovoltaic (OPV) is largely focused on ... they are promising for efficient light harvesting in solar cells. Keeping this in view, we present ... so far for the application of GQDs i...

Vinay Gupta; Tanvi Upreti; Suresh Chand

2014-01-01T23:59:59.000Z

464

Semiconductor Aspects of Organic Bulk Heterojunction Solar Cells  

Science Journals Connector (OSTI)

During the last few years organic solar cells have been discussed as a promising alternative to inorganic semiconductors for renewable energy production. These organic photovoltaic devices offer the possibility o...

Christoph J. Brabec

2003-01-01T23:59:59.000Z

465

Requisites for Highly Efficient Hot-Carrier Solar Cells  

Science Journals Connector (OSTI)

We have constructed new models based on detailed balance of particle and energy fluxes to clarify the operating principle of hot-carrier solar cells (HC-SCs) and find the requisites for high conversion efficiency...

Yasuhiko Takeda

2014-01-01T23:59:59.000Z

466

High-Efficiency, Self-Concentrating Nanoscale Solar Cell - Energy...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

provided the right combination of high-efficiency and low-cost. For example, conventional solar cells are designed to absorb light through an antireflective layer, and through a...

467

NREL Invention Speeds Solar Cell Quality Testing for Industry  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Energy within the U.S. Department of Energy. QE is a measurement of how cells respond to light across the solar spectrum, but traditional methods for measuring QE had been too...

468

Light trapping limits in plasmonic solar cells: an analytical investigation  

E-Print Network [OSTI]

We analytically investigate the light trapping performance in plasmonic solar cells with Si/metallic structures. We consider absorption enhancements for surface plasmon polaritons (SPPs) at planar Si/metal interfaces and ...

Sheng, Xing

469

Efficient light trapping structure in thin film silicon solar cells  

E-Print Network [OSTI]

Thin film silicon solar cells are believed to be promising candidates for continuing cost reduction in photovoltaic panels because silicon usage could be greatly reduced. Since silicon is an indirect bandgap semiconductor, ...

Sheng, Xing

470

Organic Solar Cells: Absolute Measurement of Domain Composition...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

00:00 This front cover represents the morphology and resulting device dynamics in organic solar cell blend films of PTB7 and PC71BM, as revealed by combined resonant x-ray...

471

Heterojunction for Multi-Junction Solar Cells - Energy Innovation...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for use in forming a photodetector that has applications for use in a multi-junction solar cell and detecting light at an energy greater than 0.95-1.2 eV. DescriptionThis...

472

Selenophene–Thiophene Block Copolymer Solar Cells with Thermostable Nanostructures  

Science Journals Connector (OSTI)

Selenophene–Thiophene Block Copolymer Solar Cells with Thermostable Nanostructures ... Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada ...

Dong Gao; Jon Hollinger; Dwight S. Seferos

2012-07-05T23:59:59.000Z

473

Configuration Optimization of a Nanosphere Array on Top of a Thin Film Solar Cell  

E-Print Network [OSTI]

Configuration Optimization of a Nanosphere Array on Top of a Thin Film Solar Cell J. Grandidier on top of a solar cell can enhance light absorption and therefore increase its efficiency. Freely photocurrent of the solar cell. On a typical thin film amorphous silicon solar cell, a parametric analysis

Atwater, Harry

474

Design of Nanostructured Solar Cells Using Coupled Optical and Electrical Modeling  

E-Print Network [OSTI]

solar   cells:   modeling,   materials  and  device  technology.  Kluwer  Academic  Publishers:  Norwell,  Massachusetts  

Deceglie, Michael G

2014-01-01T23:59:59.000Z

475

RANDOM DEPOSITION MODEL OF CDS LAYER IN CDS/CDTE THINFILM SOLAR CELLS  

E-Print Network [OSTI]

THESIS RANDOM DEPOSITION MODEL OF CDS LAYER IN CDS/CDTE THIN­FILM SOLAR CELLS Submitted by Lei Chen LAYER IN CDS/CDTE THIN­FILM SOLAR CELLS BE AC- CEPTED AS FULFILLING IN PART REQUIREMENTS FOR THE DEGREE MODEL OF CDS LAYER IN CDS/CDTE THIN­FILM SOLAR CELLS Thin­film solar cells are developing dramatically

Sites, James R.

476

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.

477

DISSERTATION DEVICE PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS  

E-Print Network [OSTI]

DISSERTATION DEVICE PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS Submitted by Markus Gloeckler PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS Thin-film solar cells have the potential to be an important

Sites, James R.

478

Ultrathin, high-efficiency, broad-band, omni-acceptance, organic solar cells enhanced by  

E-Print Network [OSTI]

: Three of central challenges in solar cells are high light coupling into solar cell, high light trappingUltrathin, high-efficiency, broad-band, omni- acceptance, organic solar cells enhanced by plasmonic and demonstration of a new ultra-thin high- efficiency organic solar cell (SC), termed "plasmonic cavity

479

An investigation of solar radiation induced cell death in a human keratinocyte cell line  

Science Journals Connector (OSTI)

...Molecular Biology 64: Cell Death Regulators...investigation of solar radiation induced cell death in a human...Dublin Institute of Technology, Dublin, Ireland...basal and squamous cell carcinomas) accounting...radiation from non-solar type UV lamp sources...

Alanna Maguire; James Walsh; and Fiona M. Lyng

2006-04-15T23:59:59.000Z

480

One-sun, single-crystalline silicon solar cell research  

SciTech Connect (OSTI)

The point-contact solar cell design, the most efficient silicon concentrator solar cell design to date, is explored for use in one-sun applications. The necessary modifications to backside-contact concentrator cell design for operation at one-sun are explored and implemented. Large-area, point-contact solar cells were fabricated on n- and p-type substrates in low-level injection (LLI). The characteristics of these LLI cells were compared to those of four different architectures of cells with substrates in high-level injection (HLI). Both types of cell achieved open-circuit voltages over 700 mV at one-sun, LLI cells had higher fill factors, and HLI cells had substantially higher short-circuit currents. The mechanisms responsible for these observations are discussed. The high V{sub oc} and J{sub sc} of the HLI cells combine to make them more efficient than the LLI cells, with efficiencies measured at Sandia up to 22.7% for a 37.5-cm{sup 2} cell at one sun. This is the highest one-sun efficiency for a silicon cell larger than 4 cm{sup 2}. Simplified, backside-contact solar cell processes were also developed, which have nearly 100% yield. Over 80 such cells, each with a 35-cm{sup 2} area or greater, were delivered to Sandia. Cells made with these simplified processes had efficiencies up to 21.3% for a 37.5-cm{sup 2} cell. The recombination properties of Si{sub 3}N{sub 4} layers over SiO{sub 2} were characterized, since Si{sub 3}N{sub 4} is an excellent antireflection coating for cells laminated under glass. Several prototype flat-plate modules of backside-contact cells were built, with up to 24 cells and efficiencies up to 19%. 26 refs., 16 figs., 4 tabs.

King, R.R.; Sinton, R.A.; Swanson, R.M. (Stanford Univ., CA (USA). Solid-State Electronics Lab.)

1991-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "dye-sensitized solar cells" 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

Solar/hydrogen fuel cell car crosses Australia  

Science Journals Connector (OSTI)

A team of students from Tamagawa University in Tokyo have become the first people to cross Australia in a solar hydrogen-powered vehicle, which runs on a combination of solar cells and fuel cells. The engineering students – led by Professor Hiroyuki Obara – left the University of Western Australia in Perth in their Apollondine vehicle on December 19, and travelled 4084 km (2538 miles) to Sydney in just eight days.

2004-01-01T23:59:59.000Z

482

Experimental test for geminate recombination applied to organic solar cells  

Science Journals Connector (OSTI)

We show that a clear experimental test can distinguish between geminate and nongeminate recombination in low mobility semiconductors. For the particular case of the organic solar cell, the relative contribution of geminate recombination can be determined by measuring transient photoconductivity versus applied voltage. Measurements carried out at room temperature and 200 K on bulk heterojunction organic solar cells fabricated with two different semiconducting polymers show that neither exhibits significant geminate recombination.

R. A. Street; Sarah Cowan; A. J. Heeger

2010-09-01T23:59:59.000Z

483

Organic Solar Cells: Absolute Measurement of Domain Composition and  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Organic Solar Cells: Absolute Organic Solar Cells: Absolute Measurement of Domain Composition and Nanoscale Size Distribution Explains Performance in Solar Cells Organic Solar Cells: Absolute Measurement of Domain Composition and Nanoscale Size Distribution Explains Performance in Solar Cells Print Tuesday, 22 January 2013 00:00 This front cover represents the morphology and resulting device dynamics in organic solar cell blend films of PTB7 and PC71BM, as revealed by combined resonant x-ray scattering and microscopy done at the Advanced Light Source. Harald Ade and co-workers find that the fullerene molecules (red) are miscible in the polymer (blue) up to 30 wt.%, above which they begin to agglomerate (bottom). This agglomeration is important for the optoelectronic processes within the device, but the agglomerates must be kept to small sizes by the solvent processing additive diiodooctane (DIO). Correlation of this morphology with the spectrally resolved quantum efficiency shows that the yellow excitons created upon photoabsorption must arrive at the agglomerate interface for charge separation to occur. The blue electrons and green holes can then percolate through appropriate molecules in the mixed matrix to the electrodes for harvesting of electrical energy. Article Link (PDF)

484

Plasmonic effect of gold nanoparticles in organic solar cells  

Science Journals Connector (OSTI)

Abstract Light trapping, due to the embedding of metallic nanoparticles, has been shown to be beneficial for a better photoabsorption in organic solar cells. Researchers in plasmonics and in the organic photovoltaics fields are working together to improve the absorption of sunlight and the photon–electron coupling to boost the performance of the devices. Recent advances in the field of plasmonics for organic solar cells focus on the incorporation of gold nanoparticles. This article reviews the different methods to produce and embed gold nanoparticles into organic solar cells. In particular, concentration, size and geometry of gold nanoparticles are key factors that directly influence the light absorption in the devices. It is shown that a careful choice of size, concentration and location of gold nanoparticles in the device result in an enhancement of the power conversion efficiencies when compared to standard organic solar cell devices. Our latest results on gold nanoparticles embedded in on organic solar cell devices are included. We demonstrate that embedded gold nanoparticles, created by depositing and annealing a gold film on transparent electrode, generate a plasmonic effect which can be exploited to increase the power conversion efficiency of a bulk heterojunction solar cell up to 10%.

Marco Notarianni; Kristy Vernon; Alison Chou; Muhsen Aljada; Jinzhang Liu; Nunzio Motta

2014-01-01T23:59:59.000Z

485

Solar energy conversion.  

SciTech Connect (OSTI)

If solar energy is to become a practical alternative to fossil fuels, we must have efficient ways to convert photons into electricity, fuel, and heat. The need for better conversion technologies is a driving force behind many recent developments in biology, materials, and especially nanoscience. The Sun has the enormous untapped potential to supply our growing energy needs. The barrier to greater use of the solar resource is its high cost relative to the cost of fossil fuels, although the disparity will decrease with the rising prices of fossil fuels and the rising costs of mitigating their impact on the environment and climate. The cost of solar energy is directly related to the low conversion efficiency, the modest energy density of solar radiation, and the costly materials currently required. The development of materials and methods to improve solar energy conversion is primarily a scientific challenge: Breakthroughs in fundamental understanding ought to enable marked progress. There is plenty of room for improvement, since photovoltaic conversion efficiencies for inexpensive organic and dye-sensitized solar cells are currently about 10% or less, the conversion efficiency of photosynthesis is less than 1%, and the best solar thermal efficiency is 30%. The theoretical limits suggest that we can do much better. Solar conversion is a young science. Its major growth began in the 1970s, spurred by the oil crisis that highlighted the pervasive importance of energy to our personal, social, economic, and political lives. In contrast, fossil-fuel science has developed over more than 250 years, stimulated by the Industrial Revolution and the promise of abundant fossil fuels. The science of thermodynamics, for example, is intimately intertwined with the development of the steam engine. The Carnot cycle, the mechanical equivalent of heat, and entropy all played starring roles in the development of thermodynamics and the technology of heat engines. Solar-energy science faces an equally rich future, with nanoscience enabling the discovery of the guiding principles of photonic energy conversion and their use in the development of cost-competitive new technologies.

Crabtree, G. W.; Lewis, N. S. (Materials Science Division); (California Inst. of Tech.)

2008-03-01T23:59:59.000Z

486

Mode Splitting for Efficient Plasmoinc Thin-film Solar Cell  

E-Print Network [OSTI]

We propose an efficient plasmonic structure consisting of metal strips and thin-film silicon for solar energy absorption. We numerically demonstrate the absorption enhancement in symmetrical structure based on the mode coupling between the localized plasmonic mode in Ag strip pair and the excited waveguide mode in silicon slab. Then we explore the method of symmetry-breaking to excite the dark modes that can further enhance the absorption ability. We compare our structure with bare thin-film Si solar cell, and results show that the integrated quantum efficiency is improved by nearly 90% in such thin geometry. It is a promising way for the solar cell.

Li, Tong; Jiang, Chun

2010-01-01T23:59:59.000Z

487

Photo of the Week: Record-Breaking Solar Cells | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Photo of the Week: Record-Breaking Solar Cells Photo of the Week: Record-Breaking Solar Cells Photo of the Week: Record-Breaking Solar Cells December 7, 2012 - 2:27pm Addthis Solar Junction, in partnership with NREL, has developed solar cells that reach a record-breaking 44 percent efficiency -- meaning that more than 40 percent of the sunlight the solar cells are exposed to is converted into electrical energy. In this photo, an operator inspects a photolithography tool used to manufacture these solar cells. | Photo by Daniel Derkacs/SolarJunction. Solar Junction, in partnership with NREL, has developed solar cells that reach a record-breaking 44 percent efficiency -- meaning that more than 40 percent of the sunlight the solar cells are exposed to is converted into electrical energy. In this photo, an operator inspects a photolithography

488

Photo of the Week: Record-Breaking Solar Cells | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Record-Breaking Solar Cells Record-Breaking Solar Cells Photo of the Week: Record-Breaking Solar Cells December 7, 2012 - 2:27pm Addthis Solar Junction, in partnership with NREL, has developed solar cells that reach a record-breaking 44 percent efficiency -- meaning that more than 40 percent of the sunlight the solar cells are exposed to is converted into electrical energy. In this photo, an operator inspects a photolithography tool used to manufacture these solar cells. | Photo by Daniel Derkacs/SolarJunction. Solar Junction, in partnership with NREL, has developed solar cells that reach a record-breaking 44 percent efficiency -- meaning that more than 40 percent of the sunlight the solar cells are exposed to is converted into electrical energy. In this photo, an operator inspects a photolithography

489

Fabrication and Characterization of Organic Solar Cells  

E-Print Network [OSTI]

processable polymer photovoltaic cells by self?organization Photodiodes,  and  Photovoltaic  Cells.   Applied Physics F,  Heeger  AJ.   Polymer  Photovoltaic  Cells  ?  Enhanced 

Yengel, Emre

2010-01-01T23:59:59.000Z

490

Solar Cells, Wound Repair Winning GVC Technologies | ornl.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solar Cells, Wound Repair Winning GVC Technologies Solar Cells, Wound Repair Winning GVC Technologies March 26, 2010 Graduate student teams from the University of Arkansas and the University of Maryland earned first place in the energy and security categories at the 2010 GVC hosted by ORNL March 24-26. The competition, in its fourth year, attracts students developing new technologies and venture investors with expertise in the market. The first-prize winners each received $25,000. Douglas Hutchings, Stephen Ritterbush, and Seth Shumate from Arkansas won first place in the energy division for Silicon Solar Solutions. "Our method replaces the expensive top layer of solar cells with a thinner, large-grain polysilicon at lower temperatures, which reduces cost and is appealing to manufacturers," said Ritterbush.

491

Monolithically interconnected GaAs solar cells: A new interconnection technology for high voltage solar cell output  

SciTech Connect (OSTI)

Photovoltaic linear concentrator arrays can benefit from high performance solar cell technologies being developed at AstroPower. Specifically, these are the integration of thin GaAs solar cell and epitaxial lateral overgrowth technologies with the application of monolithically interconnected solar cell (MISC) techniques. This MISC array has several advantages which make it ideal for space concentrator systems. These are high system voltage, reliable low cost monolithically formed interconnections, design flexibility, costs that are independent of array voltage, and low power loss from shorts, opens, and impact damage. This concentrator solar cell will incorporate the benefits of light trapping by growing the device active layers over a low-cost, simple, PECVD deposited silicon/silicon dioxide Bragg reflector. The high voltage-low current output results in minimal 12R losses while properly designing the device allows for minimal shading and resistance losses. It is possible to obtain open circuit voltages as high as 67 volts/cm of solar cell length with existing technology. The projected power density for the high performance device is 5 kW/m for an AMO efficiency of 26% at 1 5X. Concentrator solar cell arrays are necessary to meet the power requirements of specific mission platforms and can supply high voltage power for electric propulsion systems. It is anticipated that the high efficiency, GaAs monolithically interconnected linear concentrator solar cell array will enjoy widespread application for space based solar power needs. Additional applications include remote man-portable or ultra-light unmanned air vehicle (UAV) power supplies where high power per area, high radiation hardness and a high bus voltage or low bus current are important. The monolithic approach has a number of inherent advantages, including reduced cost per interconnect and increased reliability of array connections. There is also a high potential for a large number of consumer products.

Dinetta, L.C.; Hannon, M.H.

1995-10-01T23:59:59.000Z

492

24th European Photovoltaic Solar Energy Conference, Hamburg, Germany, Sept. 2009 THE BURIED EMITTER SOLAR CELL CONCEPT  

E-Print Network [OSTI]

of 79.8% indicates that trap-assisted tunneling is not a relevant loss mechanism of this solar cell24th European Photovoltaic Solar Energy Conference, Hamburg, Germany, Sept. 2009 1 THE BURIED EMITTER SOLAR CELL CONCEPT: INTERDIGITATED BACK-JUNCTION STRUCUTRE WITH VIRTUALLY 100% EMITTER COVERAGE

493

Low-cost, Efficient, Flexible Solar Cells with 3D Nanopillar...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photovoltaic Solar Photovoltaic Find More Like This Return to Search Low-cost, Efficient, Flexible Solar Cells with 3D Nanopillar Arrays Lawrence Berkeley National Laboratory...

494

Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy.  

E-Print Network [OSTI]

??Stability and reliability of solar cells are crucial for utilizing them for solar energy technology. In this dissertation work photothermal deflection spectroscopy (PDS) technique was… (more)

Bezryadina, Anna Sergeyevna

2012-01-01T23:59:59.000Z

495

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

496

Using a Financial Model to Determine Technical Objectives for Organic Solar Cells.  

E-Print Network [OSTI]

??Organic solar cells (OSCs) are of interest because the technology offers a significant opportunity to reduce the overall costs of solar energy. OSCs can be… (more)

Powell, Colin

2010-01-01T23:59:59.000Z

497

Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy  

E-Print Network [OSTI]

Roadmaps. Solar photovoltaic energy”, IEA, (Corlet, France,no longer showed any photovoltaic energy conversion. With 1Photovoltaic (PV) cells convert solar energy (photons) into

Bezryadina, Anna Sergeyevna

2012-01-01T23:59:59.000Z

498

New solar cell technology captures high-energy photons more efficientl...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

spectrum inefficiently. This is because blue photons - incoming particles of light that strike the solar cell - actually have excess energy that a conventional solar...

499

E-Print Network 3.0 - alingap solar cell Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solar Radiation Monitoring Laboratory Summary: an electrical current when illuminated by light- also called a solar cell Photovoltaic Module A group... produced when plotting...

500

Assembly and characterization of colloid-based antireflective coatings on multicrystalline silicon solar cells  

E-Print Network [OSTI]

make them superhydrophobic and/or self-cleaning. 1 Introduction Photovoltaic (PV) devices such as solar solar cells Brian G. Prevo,{ Emily W. Hon and Orlin D. Velev* Received 4th September 2006, Accepted 10th solar cells. The nanocoatings reduced the reflectance of the solar cells by approximately 10% across

Velev, Orlin D.