National Library of Energy BETA

Sample records for dye-sensitized solar cells

  1. Dye-sensitized solar cells

    DOE Patents [OSTI]

    Skotheim, T.A.

    1980-03-04

    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.

  2. Dye-sensitized solar cells

    DOE Patents [OSTI]

    Skotheim, Terje A. [Berkeley, CA

    1980-03-04

    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.

  3. The Kanatzidis - Chang Cell: dye sensitized all solid state solar...

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

    The Kanatzidis - Chang Cell: dye sensitized all solid state solar cell Home > Research > ANSER Research Highlights > The Kanatzidis - Chang Cell: dye sensitized all solid state...

  4. ZnO Nanotube Based Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    ZnO Nanotube Based Dye-Sensitized Solar Cells Alex B. F. Martinson,, Jeffrey W. Elam, Joseph T templated by anodic aluminum oxide for use in dye-sensitized solar cells (DSSCs). Atomic layer deposition of the best dye- sensitized solar cells (DSSCs) is the product of a dye with moderate extinction

  5. Hierarchically structured photoelectrodes for dye-sensitized solar cells

    E-Print Network [OSTI]

    Cao, Guozhong

    adsorption, more importantly, the hierarchically structured photoelectrodes may improve the solar cellHierarchically structured photoelectrodes for dye-sensitized solar cells Qifeng Zhang and Guozhong-sensitized solar cells using hierarchically structured photoelectrodes that consist of spherical or one

  6. Radial Electron Collection in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Radial Electron Collection in Dye-Sensitized Solar Cells Alex B. F. Martinson,, Jeffrey W. Elam-sensitized solar cells (DSSCs). Atomic layer deposition is employed to grow indium tin oxide (ITO) within a porous

  7. Dye-Sensitized Solar Cells DOI: 10.1002/anie.201104786

    E-Print Network [OSTI]

    Lin, Zhiqun

    Dye-Sensitized Solar Cells DOI: 10.1002/anie.201104786 Low-Cost Copper Zinc Tin Sulfide Counter, and Zhiqun Lin* Dye-sensitized solar cells (DSSCs) are among the most promising photovoltaic devices for low-cost Electrodes for High- Efficiency Dye-Sensitized Solar Cells** Xukai Xin, Ming He, Wei Han, Jaehan Jung

  8. Spectroscopy of Donor--Acceptor Porphyrins for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Himpsel, Franz J.

    Spectroscopy of Donor--Acceptor Porphyrins for Dye-Sensitized Solar Cells Ioannis Zegkinoglou improvement in the design of dye- sensitized solar cells has been the combination of light- absorbing the energy conversion efficiency. INTRODUCTION Dye-sensitized solar cells (DSSCs) are promising alternatives

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

    E-Print Network [OSTI]

    ] 3.2 × 10 25 1.2 -V GaAs #12; 2 1.3 Dye-sensitized solar cell,DSSC 1991Grätzel 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

  10. UNIVERSITY OF CALGARY Cycloruthenated Chromophores for the Dye-Sensitized Solar Cell

    E-Print Network [OSTI]

    Maurer, Frank

    UNIVERSITY OF CALGARY Cycloruthenated Chromophores for the Dye-Sensitized Solar Cell by Paolo synthesized, characterized and tested in dye-sensitized solar cells (DSSCs). Cyclometalated Ru(II) complexes was to establish two main research areas for the group: dye-sensitized solar cells and water oxidation. My

  11. Functionalized Graphene Sheets as a Versatile Replacement for Platinum in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Aksay, Ilhan A.

    ) this residue must not disperse in the electrolyte. KEYWORDS: graphene, dye-sensitized solar cell, cobalt redoxFunctionalized Graphene Sheets as a Versatile Replacement for Platinum in Dye-Sensitized Solar) electrodes were tested for catalytic performance in dye-sensitized solar cells (DSSCs). By using ethyl

  12. Radial electron collection in dye-sensitized solar cells.

    SciTech Connect (OSTI)

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

    2008-01-01

    We introduce a new photoelectrode architecture consisting of concentric conducting and semiconducting nanotubes for use in dye-sensitized solar cells (DSSCs). Atomic layer deposition is employed to grow indium tin oxide (ITO) within a porous template and subsequently coat the high area photoelectrode with amorphous TiO2. Compared with control devices lacking a current collector within the pores, the new photoelectrode geometry exhibits dramatically higher current densities, an effect attributed to the radial collection of electrons.

  13. Graphene Materials and Their Use in Dye-Sensitized Solar Cells Joseph D. Roy-Mayhew,

    E-Print Network [OSTI]

    Aksay, Ilhan A.

    Graphene Materials and Their Use in Dye-Sensitized Solar Cells Joseph D. Roy-Mayhew, and Ilhan A. Graphene Applications in Other Types of Solar Cells 6343 7. Conclusions and Outlook 6343 Author Information References 6345 1. INTRODUCTION Dye-sensitized solar cells (DSSCs) have taken up broad interest

  14. Hydroxamate Anchors for Improved Photoconversion in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Hydroxamate Anchors for Improved Photoconversion in Dye- Sensitized Solar Cells Timothy P. Brewster-polypyridyl dyes to TiO2 surfaces in dye-sensitized solar cells (DSSCs). The study provides fundamental insight anchors showing the best performance. Solar cells based on the pyridyl-hydroxamate complex exhibit higher

  15. DOI: 10.1002/adma.200702781 Aerogel Templated ZnO Dye-Sensitized Solar Cells**

    E-Print Network [OSTI]

    DOI: 10.1002/adma.200702781 Aerogel Templated ZnO Dye-Sensitized Solar Cells** By Thomas W. Hamann, Alex B. F. Martinson, Jeffrey W. Elam, Michael J. Pellin, and Joseph T. Hupp* Dye-sensitized solar cells (DSSCs) based on nanocrystalline TiO2 have exhibited solar energy-conversion efficiencies of over

  16. Sonochemically grown ZnO nanowalls on Graphene layers as Photoanode in Dye sensitized Solar cells.

    E-Print Network [OSTI]

    Pala, Nezih

    Sonochemically grown ZnO nanowalls on Graphene layers as Photoanode in Dye sensitized Solar cells whole solar spectrum Graphene can be a very promising material in Dye Sensitized Solar cells (DSSC University of North Texas, Denton, Texas Graphene is a two dimensional nanostructure, composed of sp2

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

    E-Print Network [OSTI]

    Lin, Zhiqun

    Rational design of hybrid dye-sensitized solar cells composed of double-layered photoanodes,a Bailiang Xue,b Wei Liu,c Zhiqun Lina and Yulin Deng*bc A uniquely structured dye-sensitized solar cell photoanodes have complementary roles in absorbing solar light at different wavelengths. The power conversion

  18. Improving the efficiency of water splitting in dye-sensitized solar cells by using a biomimetic

    E-Print Network [OSTI]

    Improving the efficiency of water splitting in dye-sensitized solar cells by using a biomimetic studied this problem in dye-sensitized solar cells where a molecular dye and a porous TiO2 electrode act 16802; b Department of Chemistry and Biochemistry and Center for Bioinspired Solar Fuel Production

  19. Phototransistor Behavior Based on Dye-Sensitized Solar Cell

    E-Print Network [OSTI]

    Wang, X Q; Wang, Y F; Zhou, W Q; Lu, Y M; Liu, Z Y

    2012-01-01

    In the present work, a light-controlled device cell is established based on the dye-sensitized solar cell using nanocrystalline TiO2 films. Voltage-current curves are characterized by three types of transport behaviors: linear increase, saturated plateau and breakdown-like increase, which are actually of the typical performances for a photo-gated transistor. Moreover, an asymmetric behavior is observed in the voltage-current loops, which is believed to arise from the difference in the effective photo-conducting areas. The photovoltaic voltage between the shared counter electrode and drain (VCE-D) is investigated as well, clarifying that the predominant dark process in source and the predominant photovoltaic process in drain are series connected, modifying the electric potential levels and thus resulting in the characteristic phototransistor behaviors.

  20. Flexible dye-sensitized solar cells with ZnO nanoparticles grown by Sonochemistry over Graphene/PET substrates.

    E-Print Network [OSTI]

    Pala, Nezih

    Flexible dye-sensitized solar cells with ZnO nanoparticles grown by Sonochemistry over Graphene characteristics of ZnO nanostructures over Graphene/PET as photoanode for flexible dye sensitized solar cells. #12; and Engineering University of North Texas, Denton, Texas Flexible Dye sensitized solar cells (FDSSCs) are light

  1. DOI: 10.1002/adma.200602927 Hierarchically Structured ZnO Film for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Cao, Guozhong

    DOI: 10.1002/adma.200602927 Hierarchically Structured ZnO Film for Dye-Sensitized Solar Cells* The interest in dye-sensitized solar cells has increased due to reduced energy sources and higher energy, zinc oxide (ZnO) has recently been explored as an alternative material in dye-sensitized solar cells

  2. EH AND S ANALYSIS OF DYE-SENSITIZED PHOTOVOLTAIC SOLAR CELL PRODUCTION.

    SciTech Connect (OSTI)

    BOWERMAN,B.; FTHENAKIS,V.

    2001-10-01

    Photovoltaic solar cells based on a dye-sensitized nanocrystalline titanium dioxide photoelectrode have been researched and reported since the early 1990's. Commercial production of dye-sensitized photovoltaic solar cells has recently been reported in Australia. In this report, current manufacturing methods are described, and estimates are made of annual chemical use and emissions during production. Environmental, health and safety considerations for handling these materials are discussed. This preliminary EH and S evaluation of dye-sensitized titanium dioxide solar cells indicates that some precautions will be necessary to mitigate hazards that could result in worker exposure. Additional information required for a more complete assessment is identified.

  3. High Excitation Transfer Efficiency from Energy Relay Dyes in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    McGehee, Michael

    High Excitation Transfer Efficiency from Energy Relay Dyes in Dye-Sensitized Solar Cells Brian E soluble energy relay dyes with high molar extinction coefficients. KEYWORDS Solar cell, energy transfer-sensitized solar cells, the excited ERDs must be able to efficiently transfer energy to the sensitizing dyes

  4. Dye Sensitized Tandem Photovoltaic Cells

    SciTech Connect (OSTI)

    Barber, Greg D.

    2009-12-21

    This work provided a new way to look at photoelectrochemical cells and their performance. Although thought of as low efficiency, a the internal efficiency of a 9% global efficiency dye sensitized solar cell is approximately equal to an 18% efficient silicon cell when each is compared to their useful spectral range. Other work undertaken with this contract also reported the first growth oriented titania and perovskite columns on a transparent conducting oxide. Other work has shown than significant performance enhancement in the performance of dye sensitized solar cells can be obtained through the use of coupling inverse opal photonic crystals to the nanocrystalline dye sensitized solar cell. Lastly, a quick efficient method was developed to bond titanium foils to transparent conducting oxide substrates for anodization.

  5. Planar Waveguide-Nanowire Integrated Three-Dimensional Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Wang, Zhong L.

    Xu, Sheng Xu, Cheng Li, Wenzhuo Wu, and Zhong Lin Wang* School of Materials Science and Engineering sustainable energy resources for the future.1,2 Excitonic solar cells (SCs),3-6 including organic and dyePlanar Waveguide-Nanowire Integrated Three-Dimensional Dye-Sensitized Solar Cells Yaguang Wei, Chen

  6. Dye-sensitized solar cells based on a nanoparticle/nanotube bilayer structure and their equivalent circuit analysis

    E-Print Network [OSTI]

    Lin, Zhiqun

    of anatase and rutile phases. As one of the major renewable energy sources, solar energy has the potential to become an essential component of future global energy production. Dye sensitized solar cells (DSSCs)1Dye-sensitized solar cells based on a nanoparticle/nanotube bilayer structure and their equivalent

  7. Plasmon Enhanced Dye-Sensitized Solar Cells Nastasia Allred1, William R. Erwin2, and Rizia Bardhan2

    E-Print Network [OSTI]

    Plasmon Enhanced Dye-Sensitized Solar Cells Nastasia Allred1, William R. Erwin2, and Rizia Bardhan2 To build and fully characterize a tandem DSSC with optimal concentrations of bimetallic nanoparticles, grant NSF EPS-1004083. Dye-sensitized solar cells (DSSCs) utilize a light absorbing dye adsorbed

  8. Microwave-Assisted Synthesis of SnO2 Nanosheets Photoanodes for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Cao, Guozhong

    Microwave-Assisted Synthesis of SnO2 Nanosheets Photoanodes for Dye-Sensitized Solar Cells Yajie microwave-assisted hydrothermal growth and used as photoanodes for dye-sensitized solar cells (DSCs nanosheets as photoanodes from microwave-assisted synthesis exhibited much enhanced energy conversion

  9. Advancing beyond current generation dye-sensitized solar cells Thomas W. Hamann,ab

    E-Print Network [OSTI]

    of oil will soon not be able to keep up with the growing demand leading to dire economic consequences.2, they are not yet an economically viable alternative to fossil fuels.7 The abundant supply and environmentalAdvancing beyond current generation dye-sensitized solar cells Thomas W. Hamann,ab Rebecca A

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

    SciTech Connect (OSTI)

    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)

    2012-12-15

    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.

  11. Metal complex-based electron-transfer mediators in dye-sensitized solar cells

    DOE Patents [OSTI]

    Elliott, C. Michael (Fort Collins, CO); Sapp, Shawn A. (Broomfield, CO); Bignozzi, Carlo Alberto (Ferrara, IT); Contado, Cristiano (Legnago, IT); Caramori, Stefano (Viconovo, IT)

    2006-03-28

    This present invention provides a metal-ligand complex and methods for using and preparing the same. In particular, the metal-ligand complex of the present invention is of the formula: L.sub.a-M-X.sub.b where L, M, X, a, and b are those define herein. The metal-ligand complexes of the present invention are useful in a variety of applications including as electron-transfer mediators in dye-sensitized solar cells and related photoelectrochromic devices.

  12. Preferred Molecular Orientation of Coumarin 343 on TiO2 Surfaces: Application to Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    McCree-Grey, Jonathan; Cole, Jacqueline Manina; Evans, Peter

    2015-07-23

    The dye…TiO2 interfacial structure in working electrodes of dye-sensitized solar cells (DSCs) is known to influence its photovoltaic device performance. Despite this, direct and quantitative reports of such structure remain sparse. This case study...

  13. Many-body Green's function study of coumarins for dye-sensitized solar cells

    E-Print Network [OSTI]

    Faber, C; Deutsch, T; Blase, X

    2012-01-01

    We study within the many-body Green's function $GW$ and Bethe-Salpeter formalisms the excitation energies of several coumarin dyes proposed as an efficient alternative to ruthenium complexes for dye-sensitized solar cells. Due to their internal donor-acceptor structure, these chromophores present low-lying excitations showing a strong intramolecular charge-transfer character. We show that combining $GW$ and Bethe-Salpeter calculations leads to charge-transfer excitation energies and oscillator strengths in excellent agreement with reference range-separated functional studies or coupled-cluster calculations. The present results confirm the ability of this family of approaches to describe accurately Frenkel and charge-transfer photo-excitations in both extended and finite size systems without any system-dependent adjustable parameter, paving the way to the study of dye-sensitized semiconducting surfaces.

  14. Self-assembled ultra small ZnO nanocrystals for dye-sensitized solar cell application

    SciTech Connect (OSTI)

    Patra, Astam K.; Dutta, Arghya; Bhaumik, Asim

    2014-07-01

    We demonstrate a facile chemical approach to produce self-assembled ultra-small mesoporous zinc oxide nanocrystals using sodium salicylate (SS) as a template under hydrothermal conditions. These ZnO nanomaterials have been successfully fabricated as a photoanode for the dye-sensitized solar cell (DSSC) in the presence of N719 dye and iodine–triiodide electrolyte. The structural features, crystallinity, purity, mesophase and morphology of the nanostructure ZnO are investigated by several characterization tools. N{sub 2} sorption analysis revealed high surface areas (203 m{sup 2} g{sup ?1}) and narrow pore size distributions (5.1–5.4 nm) for different samples. The mesoporous structure and strong photoluminescence facilitates the high dye loading at the mesoscopic void spaces and light harvesting in DSSC. By utilizing this ultra-small ZnO photoelectrode with film thickness of about 7 ?m in the DSSC with an open-circuit voltage (V{sub OC}) of 0.74 V, short-circuit current density (J{sub SC}) of 3.83 mA cm{sup ?2} and an overall power conversion efficiency of 1.12% has been achieved. - Graphical abstract: Ultra-small ZnO nanocrystals have been synthesized with sodium salicylate as a template and using it as a photoanode in a dye-sensitized solar cell 1.12% power conversion efficiency has been observed. - Highlights: • Synthesis of self-assembled ultra-small mesoporous ZnO nanocrystals by using sodium salicylate as a template. • Mesoporous ZnO materials have high BET surface areas and void space. • ZnO nanoparticles serve as a photoanode for the dye-sensitized solar cell (DSSC). • Using ZnO nanocrystals as photoelectrode power conversion efficiency of 1.12% has been achieved.

  15. The effect of molecular aggregates over the interfacial charge transfer processes on dye sensitized solar cells

    SciTech Connect (OSTI)

    Planells, Miquel; Forneli, Amparo; Martinez-Ferrero, Eugenia; Sanchez-Diaz, Antonio; Sarmentero, Maria Angeles [Institute of Chemical Research of Catalonia (ICIQ). Avda. Paiesos Catalans, 16 Tarragona 43007 (Spain); Ballester, Pablo; Palomares, Emilio [Institute of Chemical Research of Catalonia (ICIQ). Avda. Paiesos Catalans, 16 Tarragona 43007 (Spain); Institucio Catalana de Recerca i Estudis Avancats (ICREA), Passeig Lluis Companys, 23 08010 Barcelona (Spain); O'Regan, Brian C. [Centre for Electronic Materials and Devices, Imperial College of London, Exhibition Road, SW7 2AZ London (United Kingdom)

    2008-04-14

    The electron transfer reaction between the photoinjected electrons in the nanocrystalline TiO{sub 2} mesoporous sensitized films and the oxidized electrolyte in dye sensitized solar cells (DSSC) plays a major role on the device efficiency. In this communication we show that, although the presence of molecular aggregates on the free base porphyrin DSSC limits the device photocurrent response under illumination, they form an effective hydrophobic barrier against the oxidized electrolyte impeding fast back-electron transfer kinetics. Therefore, their drawback can be overcome by designing dyes with peripheral moieties that prevent the formation of the aggregates and are able to achieve efficiencies as high as 3.2% under full sun.

  16. nature materials | VOL 4 | JUNE 2005 | www.nature.com/naturematerials 455 Nanowire dye-sensitized solar cells

    E-Print Network [OSTI]

    Cohen, Ronald C.

    (DSCs)--are promising devices for inexpensive, large-scale solar energy conversion. The DSC is currentlyLETTERS nature materials | VOL 4 | JUNE 2005 | www.nature.com/naturematerials 455 Nanowire dye-sensitized solar cells MATT LAW1,2 *, LORI E. GREENE1,2 *, JUSTIN C. JOHNSON1 , RICHARD SAYKALLY1 AND PEIDONG YANG1

  17. Dye-sensitized solar cell employing zinc oxide aggregates grown in the presence of lithium

    DOE Patents [OSTI]

    Zhang, Qifeng; Cao, Guozhong

    2013-10-15

    Provided are a novel ZnO dye-sensitized solar cell and method of fabricating the same. In one embodiment, deliberately added lithium ions are used to mediate the growth of ZnO aggregates. The use of lithium provides ZnO aggregates that have advantageous microstructure, morphology, crystallinity, and operational characteristics. Employing lithium during aggregate synthesis results in a polydisperse collection of ZnO aggregates favorable for porosity and light scattering. The resulting nanocrystallites forming the aggregates have improved crystallinity and more favorable facets for dye molecule absorption. The lithium synthesis improves the surface stability of ZnO in acidic dyes. The procedures developed and disclosed herein also help ensure the formation of an aggregate film that has a high homogeneity of thickness, a high packing density, a high specific surface area, and good electrical contact between the film and the fluorine-doped tin oxide electrode and among the aggregate particles.

  18. Aggregated TiO2 Based Nanotubes for Dye Sensitized Solar Cells

    SciTech Connect (OSTI)

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

    2013-11-01

    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.

  19. Effects of Dye Loading Conditions on the Energy Conversion Efficiency of ZnO and TiO2 Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Cao, Guozhong

    light conversion efficiency of zinc oxide (ZnO) film electrodes in dye-sensitized solar cellsEffects of Dye Loading Conditions on the Energy Conversion Efficiency of ZnO and TiO2 Dye-Sensitized Solar Cells Tammy P. Chou, Qifeng Zhang, and Guozhong Cao* Materials Science and Engineering, Uni

  20. Electronic Tuning of Nickel-Based Bis(dicarbollide) Redox Shuttles in Dye-Sensitized Solar Cells,

    SciTech Connect (OSTI)

    Spokoyny, Alexander M.; Li, Tina C.; Farha, Omar K.; Machan, C. W.; She, Chunxing; Stern, C. L.; Marks, Tobin J.; Hupp, Joseph T.; Mirkin, Chad

    2010-01-01

    Rational design of a new series of boron-functionalized Ni{sup III}/Ni{sup IV}–bis(dicarbollide) clusters results in a family of robust and tunable redox shuttles. This offers a means to rationally control the redox properties in dye-sensitized solar cells (DSCs), leading to exceptionally high open-circuit voltages.

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

    E-Print Network [OSTI]

    McGehee, Michael

    Solution processing a b s t r a c t We report using doctor-blading to replace conventional spin coating)-9,90 -spirobifluorene) in solid-state dye-sensitized solar cells. Doctor-blading is a roll-to-roll compatible, large-area coating technique, is capable of achieving the same spiro-OMeTAD pore filling fraction

  2. DOI: 10.1002/asia.201200349 Dye-Sensitized TiO2 Nanotube Solar Cells: Rational Structural and Surface

    E-Print Network [OSTI]

    Lin, Zhiqun

    DOI: 10.1002/asia.201200349 Dye-Sensitized TiO2 Nanotube Solar Cells: Rational Structural and Surface Engineering on TiO2 Nanotubes Jun Wang[a] and Zhiqun Lin*[b] 2754 2012 Wiley-VCH Verlag GmbH & Co-defined structural parameters and enhanced electronic properties, highly ordered TiO2 nanotube arrays have been

  3. Electronic Tuning of Nickel-Based Bis(dicarbollide) Redox Shuttles in Dye-Sensitized Solar Cells

    SciTech Connect (OSTI)

    Spokoyny, Alexander M. [Northwestern Univ., Evanston, IL (United States); Li, Tina C. [Northwestern Univ., Evanston, IL (United States); Farha, Omar K. [Northwestern Univ., Evanston, IL (United States); Machan, Charles W. [Northwestern Univ., Evanston, IL (United States); She, Chunxing [Northwestern Univ., Evanston, IL (United States); Stern, Charlotte L. [Northwestern Univ., Evanston, IL (United States); Marks, Tobin J. [Northwestern Univ., Evanston, IL (United States); Hupp, Joseph T. [Northwestern Univ., Evanston, IL (United States); Mirkin, Chad A. [Northwestern Univ., Evanston, IL (United States)

    2010-01-01

    Rational design of a new series of boron-functionalized Ni{sup III}/Ni{sup IV}–bis(dicarbollide) clusters results in a family of robust and tunable redox shuttles (see diagram; EDG and EWG denote electron-donating and -withdrawing groups, respectively). This offers a means to rationally control the redox properties in dye-sensitized solar cells (DSCs), leading to exceptionally high open-circuit voltages.

  4. Effect of the Presence of Iodide on the Electron Injection Dynamics of Dye-Sensitized TiO2-Based Solar Cells

    E-Print Network [OSTI]

    McCusker, James K.

    Solar Cells Amanda L. Smeigh, Jordan E. Katz, Bruce S. Brunschwig,*,,§ Nathan S. Lewis,*, and James K dynamics of dye-sensitized TiO2-based solar cells have been investigated to determine the effects -/I- were fully functional solar cells whose steady-state photocurrents were directly measured. In (n

  5. Enhanced efficiency of the dye-sensitized solar cells by excimer laser irradiated carbon nanotube network counter electrode

    SciTech Connect (OSTI)

    Chien, Yun-San, E-mail: u930347@oz.nthu.edu.tw; Fu, Wei-En [Center for Measurement Standards, Industrial Technology Research Institute, Hsinchu, Taiwan (China); Yang, Po-Yu [Taiwan Semiconductor Manufacturing Company, Hsinchu, Taiwan (China); Lee, I-Che; Chu, Chih-Chieh; Chou, Chia-Hsin; Cheng, Huang-Chung [Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, Hsinchu, Taiwan (China)

    2014-02-03

    The carbon nanotube network decorated with Pt nanoparticles (PtCNT) irradiated by excimer laser as counter electrode (CE) of dye-sensitized solar cells (DSSCs) has been systematically demonstrated. The conversion efficiency would be improved from 7.12% to 9.28% with respect to conventional Pt-film one. It was attributed to the enhanced catalytic surface from Pt nanoparticles and the improved conductivity due to the adjoining phenomenon of PtCNTs irradiated by laser. Moreover, the laser annealing could also promote the interface contact between CE and conductive glass. Therefore, such a simple laser-irradiated PtCNT network is promising for the future flexible DSSCs applications.

  6. 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

  7. Design of hybrid nanoheterostructure systems for enhanced quantum and solar conversion efficiencies in dye-sensitized solar cells

    SciTech Connect (OSTI)

    K?l?ç, Bayram E-mail: kbayramkilic@gmail.com; Telli, Hakan; Ba?aran, Ali; Pirge, Gursev; Tüzemen, Sebahattin

    2015-04-07

    Dye sensitized solar cells (DSSCs) with an innovative design involving controlled-morphology vertically aligned (VA) ZnO nanowires within mesoporous TiO{sub 2} structures with ultrahigh surface area for implementation as photoanodes are herein reported. Although TiO{sub 2} nanostructures exhibit excellent power conversion efficiency, the electron transport rate is low owing to low electron mobility. To overcome this, ZnO nanowires with high electron mobility have been investigated as potential candidates for photoanodes. However, the power conversion efficiency of ZnO nanowires is still lower than that of TiO{sub 2} owing to their low internal surface area. Consequently, in this work, vertical growth of ZnO nanowires within mesoporous TiO{sub 2} structures is carried out to increase their solar power conversion efficiency. The photovoltaic performance of solar cells using ZnO nanowires, mesoporous TiO{sub 2}, and TiO{sub 2}/ZnO hybrid structures are compared. The VA TiO{sub 2}/ZnO hybrid structures are found to provide direct electron transfer compared with the tortuous pathway of zero-dimensional nanostructures, resulting in an increased conversion efficiency. It is demonstrated that the light scattering of the photoanode film is increased and electron recombination is decreased when an appropriate amount of mesoporous TiO{sub 2} is used as a substrate for ZnO nanowires. The DSSC fabricated with the TiO{sub 2}/ZnO hybrid photoanode prepared with 15.8?wt. % TiO{sub 2} showed the highest conversion efficiency of 7.30%, approximately 5%, 18%, and 40% higher than that of DSSCs fabricated with 3.99?wt. % TiO{sub 2}, pure TiO{sub 2}, and pure ZnO photoanodes, respectively.

  8. The origin of slow electron recombination processes in dye-sensitized solar cells with alumina barrier coatings

    SciTech Connect (OSTI)

    Fabregat-Santiago, Francisco; Garcia-Canadas, Jorge; Palomares, Emilio; Clifford, John N.; Haque, Saif A.; Durrant, James R.; Garcia-Belmonte, Germa; Bisquert, Juan [Departament de Ciencies Experimentals, Universitat Jaume I, 12080 Castello (Spain); Department of Chemistry, Imperial College, London SW7 2AY (United Kingdom); Institut de Ciencia Molecular Universitat de Valencia, C. P. 46100, Dr. Moliner 50, Burjassot, Valencia (Spain); Department of Chemistry, Imperial College, London SW7 2AY (United Kingdom); Departament de Ciencies Experimentals, Universitat Jaume I, 12080 Castello (Spain)

    2004-12-01

    We investigate the effect of a thin alumina coating of nanocrystalline TiO{sub 2} films on recombination dynamics of dye-sensitized solar cells. Both coated and uncoated cells were measured by a combination of techniques: transient absorption spectroscopy, electrochemical impedance spectroscopy, and open-circuit voltage decay. It is found that the alumina barrier reduces the recombination of photoinjected electrons to both dye cations and the oxidized redox couple. It is proposed that this observed retardation can be attributed primarily to two effects: almost complete passivation of surface trap states in TiO{sub 2} that are able to inject electrons to acceptor species, and slowing down by a factor of 3-4 the rate of interfacial charge transfer from conduction-band states.

  9. Ni(III)/(IV) Bis(dicarbollide) as a Fast, Noncorrosive Redox Shuttle for Dye-Sensitized Solar Cells

    SciTech Connect (OSTI)

    Li, Tina C.; Spokoyny, Alexander M.; She, Chunxing; Farha, Omar K.; Mirkin, Chad; Marks, Tobin J.; Hupp, Joseph T.

    2010-01-01

    Nickel bis(dicarbollide) is used as a fast, one-electron outer sphere redox couple in dye-sensitized solar cells. Device performances with this anionic shuttle are investigated with different electrolyte concentrations and additives, using only 0.030 M of the Ni(III) bis(dicarbollide) to efficiently regenerate the ruthenium dye. Atomic layer deposition of Al{sub 2}O{sub 3} on the nanoparticulate TiO{sub 2} photoanodes is further used to improve device performances, increasing current densities almost 2-fold and attaining power conversion efficiencies 10× greater than its metallocene analogue, ferrocene/ferrocenium. Open-circuit voltage decay is used to probe the kinetics of the Ni(III)/(IV) bis(dicarbollide) redox couple, and electron interception is found to be 10{sup 3}× slower than ferrocene/ferrocenium, explaining the large discrepancy in open-circuit voltage potentials between these two redox shuttles.

  10. Ni(III)/(IV) Bis(dicarbollide) as a Fast, Noncorrosive Redox Shuttle for Dye-Sensitized Solar Cells

    SciTech Connect (OSTI)

    Li, Tina C. [Northwestern Univ., Evanston, IL (United States); Spokoyny, Alexander M. [Northwestern Univ., Evanston, IL (United States); Chunxing, She [Northwestern Univ., Evanston, IL (United States); Farha, Omar K. [Northwestern Univ., Evanston, IL (United States); Mirkin, Chad A. [Northwestern Univ., Evanston, IL (United States); Marks, Tobin J. [Northwestern Univ., Evanston, IL (United States); Hupp, Joseph T. [Northwestern Univ., Evanston, IL (United States)

    2010-01-01

    Nickel bis(dicarbollide) is used as a fast, one-electron outer sphere redox couple in dye-sensitized solar cells. Device performances with this anionic shuttle are investigated with different electrolyte concentrations and additives, using only 0.030 M of the Ni(III) bis(dicarbollide) to efficiently regenerate the ruthenium dye. Atomic layer deposition of Al{sub 2}O{sub 3} on the nanoparticulate TiO{sub 2} photoanodes is further used to improve device performances, increasing current densities almost 2-fold and attaining power conversion efficiencies ?10× greater than its metallocene analogue, ferrocene/ferrocenium. Open-circuit voltage decay is used to probe the kinetics of the Ni(III)/(IV) bis(dicarbollide) redox couple, and electron interception is found to be ?10{sup 3}× slower than ferrocene/ferrocenium, explaining the large discrepancy in open-circuit voltage potentials between these two redox shuttles.

  11. The Kanatzidis - Chang Cell: dye sensitized all solid state solar cell |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar FuelTechnologyTel: Name:Department of Energy The Journey

  12. Improved dye sensitized solar cell performance in larger cell size by using TiO This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Siegel, Paul H.

    Improved dye sensitized solar cell performance in larger cell size by using TiO 2 nanotubes.1088/0957-4484/24/4/045401 Improved dye sensitized solar cell performance in larger cell size by using TiO2 nanotubes Yanyan Zhang1 the use of anodized TiO2 nanotubes on Ti foil in combination with the standard TiO2 nanoparticle paste

  13. "Building the Dye-Sensitized Solar Fuel Device" Conference |...

    Office of Science (SC) Website

    "Building the Dye-Sensitized Solar Fuel Device" Conference Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News EFRC...

  14. Production of core–shell type conducting FTO/TiO{sub 2} photoanode for dye sensitized solar cells

    SciTech Connect (OSTI)

    Icli, Kerem Cagatay; Yavuz, Halil Ibrahim; Ozenbas, Macit

    2014-02-15

    Core–shell type photoanode composed of electrically conducting fluorine doped tin dioxide (FTO) matrix and TiO{sub 2} shell layer was prepared and applied in dye sensitized solar cells. Effects of fluorine doping on tin dioxide based cells and precursor material on shell layer were investigated. Fluorine doped tin dioxide nanoparticles were synthesized under hydrothermal conditions and resistivity value down to 17 ? cm was achieved. Cells constructed from FTO nanoparticles show enhanced performance compared to intrinsic SnO{sub 2}. Deposition of thin blocking TiO{sub 2} layers was conducted using ammonium hexafluorotitanate and titanium tetrachloride aqueous solutions for different dipping durations which yielded significant deviations in the layer morphology and affected cell parameters. Best results were obtained with titanium tetrachloride treated cells giving 11.51 mA/cm{sup 2} photocurrent density and they were comparable with that of pure TiO{sub 2} based cells prepared under identical conditions. - Graphical abstract: Core shell type FTO matrix was formed as TiO{sub 2} is the shell material to create a blocking layer between FTO core and the electrolyte for suppressed recombination and efficiency enhancement. Display Omitted - Highlights: • Core–shell type photoanode using conducting FTO matrix and TiO{sub 2} shell was prepared. • FTO nanoparticles having resistivity value down to 17 ? cm was achieved. • Best cell parameters were obtained with TiCl{sub 4} treated cells. • FTO nanoparticle based cells show enhanced performance compared to intrinsic SnO{sub 2}. • Photocurrent in TiCl{sub 4} treated cells is found as comparable to pure TiO{sub 2} cell.

  15. Metal-free organic sensitizers for use in water-splitting dye-sensitized photoelectrochemical cells

    E-Print Network [OSTI]

    Metal-free organic sensitizers for use in water-splitting dye-sensitized photoelectrochemical cells solar cell. We report the synthesis, spectral, and electrochem- ical properties of the sensitizers groups have studied them as light-harvesting molecules in dye-sensitized solar cells (DSSCs) (6, 7

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

    SciTech Connect (OSTI)

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

    2014-04-07

    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.

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

    SciTech Connect (OSTI)

    Jin, Hwa-Young; Kim, Jae-Yup; Ah Lee, Jin; Lee, Kwangsoo; Yoo, Kicheon; Lee, Doh-Kwon; Kim, BongSoo; Young Kim, Jin; Kim, Honggon; Jung Son, Hae; Kim, Jihyun; Ah Lim, Jung E-mail: mjko@kist.re.kr; Jae Ko, Min E-mail: mjko@kist.re.kr

    2014-04-07

    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.

  18. ZnO Nanostructures for Dye-Sensitized Solar Cells By Qifeng Zhang,* Christopher S. Dandeneau, Xiaoyuan Zhou, and

    E-Print Network [OSTI]

    Cao, Guozhong

    , such as solar cells, fuel cells, and biofuels. However, although these alternative energy sources have been energy sources. Solar energy is considered to be the ultimate solution to the energy and environmental challenge as a carbon-neutral energy source. The conversion from solar energy to electricity is fulfilled

  19. Charge transport in zirconium doped anatase nanowires dye-sensitized solar cells: Trade-off between lattice strain and photovoltaic parameters

    SciTech Connect (OSTI)

    Archana, P. S.; Gupta, Arunava; Yusoff, Mashitah M.; Jose, Rajan

    2014-10-13

    Zirconium (Zr) is doped up to 5 at.?% in anatase TiO{sub 2} nanowires by electrospinning and used as working electrode in dye-sensitized solar cells. Variations observed in the photovoltaic parameters were correlated by electrochemical impedance spectroscopy, open circuit voltage decay, and X-ray diffraction measurements. Results show that homovalent substitution of Zr in TiO{sub 2} increased the chemical capacitance and electron diffusion coefficient which in turn decreased charge transport resistance and charge transit time. However, lattice strain due to size mismatch between the Zr{sup 4+} and Ti{sup 4+} ions decreased open circuit voltage and fill factor thereby setting a trade-off between doping concentration and photovoltaic properties.

  20. Growth of aligned single-crystalline rutile TiO2 nanowires on arbitrary substrates and their application in dye-sensitized solar cells

    SciTech Connect (OSTI)

    Kumar, Akshay; Madaria, Anuj R.; Zhou, Chongwu

    2010-05-06

    TiO{sub 2} is a wide band gap semiconductor with important applications in photovoltaic cells and photocatalysis. In this paper, we report synthesis of single-crystalline rutile phase TiO{sub 2} nanowires on arbitrary substrates, including fluorine-doped tin oxide (FTO), glass slides, tin-doped indium oxide (ITO), Si/SiO{sub 2}, Si(100), Si(111), and glass rods. By controlling the growth parameters such as growth temperature, precursor concentrations, and so forth, we demonstrate that anisotropic growth of TiO{sub 2} is possible leading to various morphologies of nanowires. Optimization of the growth recipe leads to well-aligned vertical array of TiO{sub 2} nanowires on both FTO and glass substrates. Effects of various titanium precursors on the growth kinetics, especially on the growth rate of nanowires, are also studied. Finally, application of vertical array of TiO{sub 2} nanowires on FTO as the photoanode is demonstrated in dye-sensitized solar cell with an efficiency of 2.9 ± 0.2%.

  1. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    dynamics in dye sensitized nanocrystalline solar cells using a polymer electrolytedynamics in dye sensitized nanocrystalline solar cells using a polymer electrolyte.

  2. Synthesis, characterization and application of sol-gel derived mesoporous TiO{sub 2} nanoparticles for dye-sensitized solar cells

    SciTech Connect (OSTI)

    Khan, M. Alam; Shaheer Akhtar, M.; Yang, O-Bong [School of Semiconductor and Chemical Engineering, Chonbuk National University, Dukjin Dong, Dukjingu, Jeon-ju (Korea, Republic of)

    2010-12-15

    Nanocrystalline mesoporous titania of anatase crystal phase were prepared by sol-gel route by varying calcination (400 C and 600 C) conditions, and the photo-electrochemical properties were investigated for dye-sensitized solar cell applications. The TTIP precursor in n-heptane solvent with ratio of water to TTIP (5:1) was found to be effective substrate for the working electrodes. The overall conversion efficiency of 7.59% was achieved under 1 sun irradiation with open circuit voltage of 0.77 V, current density of 17.00 mA/cm{sup 2} and FF of 51.12. The high efficiency of the 400 C calcined sample were attributed to its mesopores, high BET surface area (80.1 m{sup 2}/g) and large pore volume of prepared titania substrate which provide better surface for the absorption of dye, improves light harvesting efficiency and better charge injection. The prepared samples were characterized by XRD, small angle XRD, FE-SEM, TEM, IPCE, I-V curve, BET surface area and BJH plot techniques. (author)

  3. Removing Structural Disorder from Oriented TiO2 Nanotube Arrays: Reducing the Dimensionality of Transport and Recombination in Dye-Sensitized Solar Cells

    SciTech Connect (OSTI)

    Zhu, K.; Vinzant, T. B.; Neale, N. R.; Frank, A. J.

    2007-01-01

    We report on the influence of morphological disorder, arising from bundling of nanotubes (NTs) and microcracks in films of oriented TiO{sub 2} NT arrays, on charge transport and recombination in dye-sensitized solar cells (DSSCs). Capillary stress created during evaporation of liquids from the mesopores of dense TiO{sub 2} NT arrays was of sufficient magnitude to induce bundling and microcrack formation. The average lateral deflection of the NTs in the bundles increased with the surface tension of the liquids and with the film thicknesses. The supercritical CO{sub 2} drying technique was used to produce bundle-free and crack-free NT films. Charge transport and recombination properties of sensitized films were studied by frequency-resolved modulated photocurrent/photovoltage spectroscopies. Transport became significantly faster with decreased clustering of the NTs, indicating that bundling creates additional pathways via intertube contacts. Removing such contacts alters the transport mechanism from a combination of one and three dimensions to the expected one dimension and shortens the electron-transport pathway. Reducing intertube contacts also resulted in a lower density of surface recombination centers by minimizing distortion-induced surface defects in bundled NTs. A causal connection between transport and recombination is observed. The dye coverage was greater in the more aligned NT arrays, suggesting that reducing intertube contacts increases the internal surface area of the films accessible to dye molecules. The solar conversion efficiency and photocurrent density were highest for DSSCs incorporating films with more aligned NT arrays owing to an enhanced light-harvesting efficiency. Removing structural disorder from other materials and devices consisting of nominally one-dimensional architectures (e.g., nanowire arrays) should produce similar effects.

  4. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    by Dye-Sensitized Photovoltaic cells. Inorganic Chemistry,by Dye-Sensitized Photovoltaic Cells. Inorganic ChemistryTiO 2 solar cells: transport, recombination and photovoltaic

  5. Enhanced electron collection in TiO{sub 2} nanoparticle-based dye-sensitized solar cells by an array of metal micropillars on a planar fluorinated tin oxide anode.

    SciTech Connect (OSTI)

    Yang, Z.; Xu, T.; Gao, S.; Welp, U.; Kwok, W.-K.; Materials Science Division; Northern Illinois Univ.

    2010-01-01

    Charge collection efficiency exhibits a strong influence on the overall efficiency of nanocrystalline dye-sensitized solar cells. It highly depends on the quality of the TiO{sub 2} nanoparticulate layer in the photoanode, and hence most efforts have been directed on the improvement and deliberate optimization of the quality the TiO{sub 2} nanocrystalline layer. In this work, we aim to reduce the electron collection distance between the place of origin in the TiO{sub 2} layer to the electron-collecting TCO anode as an alternative way to enhance the charge collection efficiency. We use an array of metal micropillars on fluorine-doped tin oxide (FTO) as the collecting anode. Under the same conditions, the Ni micropillar-on-FTO-based dye-sensitized solar cells (DSSCs) exhibit a remarkably enhanced current density, which is approximately 1.8 times greater compared with the bare FTO-based DSSCs. Electron transport was investigated using the electrochemical impedance spectroscopy technique. Our results reveal that the electron collection time in Ni micropillar-on-FTO-based DSSCs is much shorter than that of bare FTO-based DSSCs, indicating faster electron collection due to the Ni micropillars buried in TiO{sub 2} nanoparticulate layer that serve as electron transport shortcuts. As a result, the charge collection efficiency was enhanced by 15?20% with respect to that of the bare FTO-based DSSCs. Consequently, the overall energy conversion efficiency was found to increase from 2.6% in bare FTO-based DSSCs to 4.8% in Ni micropillar-on-FTO-based DSSCs for a 6 {micro}m-thick TiO{sub 2} NP film.

  6. Coupling of Titania Inverse Opals to Nanocrystalline Titania Layers in Dye-Sensitized Solar Seung-Hyun Anna Lee, Neal M. Abrams,, Paul G. Hoertz,,4 Greg D. Barber,,

    E-Print Network [OSTI]

    Coupling of Titania Inverse Opals to Nanocrystalline Titania Layers in Dye-Sensitized Solar Cells-sensitized solar cells (DSSCs) that contain bilayers of nanocrystalline TiO2 (nc-TiO2) and titania inverse opal

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

    E-Print Network [OSTI]

    Wang, Zhong L.

    , nanostructures have been used in energy storage fields, such as lithium ion batteries (LIBs), due to their high is based on a silicon solar panel and a solid-state lithium battery as the two independent parts, which

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

    E-Print Network [OSTI]

    Lin, Zhiqun

    120-750, Korea School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States # Department of Materials Science and Engineering, Iowa State University production due to their high solar energy conversion efficiency as well as relatively low fabrication cost.1

  9. Growth of Aligned Single-Crystalline Rutile TiO2 Nanowires on Arbitrary Substrates and Their Application in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Zhou, Chongwu

    the anodization method has been used to grow TiO2 nanotubes,28 an oblique angle deposition method has beenGrowth of Aligned Single-Crystalline Rutile TiO2 Nanowires on Arbitrary Substrates TiO2 is a wide band gap semiconductor with important applications in photovoltaic cells

  10. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    Solar Energy Materials and Solar Cells. 2005;86(2):197-205.in LEDs [18-20] and solar cells [ 20, 21]. What makes thesesolar cells, hybrid solar cells and dye-sensitized solar

  11. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    Y. , Warta, W. , Dunlop, E.D. Solar Cell efficiency tables (in dye-sensitized solar cells based on Tio2 nanocrystal/R. J. ; Nozik, A. J. Schottky Solar Cells Based on Colloidal

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

    E-Print Network [OSTI]

    Armstrong, Paul Barber

    2010-01-01

    J. The physics of solar cells; Imperial College Press,for organic polymer solar cells investigated to date. Theincluding organic solar cells and dye-sensitized solar

  13. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    551, 2005. 2. Graztel, M. Solar Energy Conversion by Dye-Y. , Warta, W. , Dunlop, E.D. Solar Cell efficiency tables (efficiency in dye-sensitized solar cells based on Tio2

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

    E-Print Network [OSTI]

    Armstrong, Paul Barber

    2010-01-01

    bulk heterojunction organic solar cells, blends of a p-typebottleneck, bilayer organic solar cells are normallycells, including organic solar cells and dye-sensitized

  15. Biomimetic Dye Molecules for Solar Cells

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

    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...

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

    E-Print Network [OSTI]

    Armstrong, Paul Barber

    2010-01-01

    DSCs. Organic Polymer Photovoltaics Solar cells made fromThe harvesting of solar energy using photovoltaics has theOrganic photovoltaics (OPVs), dye sensitized solar cells (

  17. ZnO nanotube-based dye-sensitized solar cell and its application in self-powered devices This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Wang, Zhong L.

    -dimensionally structured materials (nanorod, nanowire, nanotube) [7], etc. Highly ordered TiO2 nanotube arrays as a potential alternative to conventional inorganic solid solar cells, by using nanocrystalline TiO2 sensitized based on TiO2 nanoparticles with a size of 10­30 nm have been used as photoanodes with a demonstrated 11

  18. Materials Today Volume 18, Number 3 April 2015 RESEARCH Recent advances in dye-sensitized solar

    E-Print Network [OSTI]

    Lin, Zhiqun

    and counter electrode. Introduction Motivated by continuously growing global energy demands and the depletion of readily accessible fossil fuels; the search for alternative energy sources, particularly renewable solar energy, has become vital. Despite the clear advantages associated with the adoption of solar cells

  19. Nanocrystal Surface Modifications for Catalytic Solar to Fuel Conversion

    E-Print Network [OSTI]

    Grauer, David

    2014-01-01

    Cost, High-Efficiency Solar Cell Based on Dye- SensitizedPettersson, H. Dye-Sensitized Solar Cells. Chem. Rev. 2010,for Liquid-Junction Solar Cells. Chem. Rev. 2010, 110, 6664–

  20. Commercialization potential of dye-sensitized mesoscopic solar cells

    E-Print Network [OSTI]

    Tan, Kwan Wee

    2008-01-01

    The price of oil has continued to rise, from a high of US$100 per barrel at the beginning 2008 to a new record of above US$140 in the recent weeks (of July). Coupled with increasing insidious greenhouse gas emissions, the ...

  1. On the Design of Oxide Films, Nanomaterials, and Heterostructures for Solar Water Oxidation Photoanodes

    E-Print Network [OSTI]

    Kronawitter, Coleman

    2012-01-01

    dye-sensitized solar cells the open circuit potential can bethe open circuit potential of dye-sensitized solar cells isprocesses show potential for the production of solar fuels,

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

    E-Print Network [OSTI]

    -Sensitized Photoelectrochemical Cell W. Justin Youngblood, Seung-Hyun Anna Lee, Yoji Kobayashi, Emil A. Hernandez-Pagan, Paul G with TiO2 photoelectrodes under UV illumination in 1972,1 and more efficient multijunction photoelectrodes

  3. Post-Assembly Atomic Layer Deposition of Ultrathin Metal-Oxide Coatings Enhances the Performance of an Organic Dye-Sensitized

    E-Print Network [OSTI]

    costs, dye-sensitized (molecule- sensitized) solar cells (DSCs) are among the most promising third-generation photovoltaic technologies.1-5 Impressive photovoltaic performance has been obtained using a variety of organic

  4. Probing the Electronic Structure of a Photoexcited Solar Cell Dye with Transient X-ray Absorption Spectroscopy

    E-Print Network [OSTI]

    Kuiken, Benjamin E. Van

    2014-01-01

    Pettersson, H.Dye-Sensitized Solar Cells Chem. Rev. 2010,Photo-Sensitizers in Grätzel Solar Cells: Quantum-ChemicalSensitizing Dyes in Solar Cells J. Phys. Chem. C 2008, 113,

  5. Spectral sensitization of nanocrystalline solar cells

    DOE Patents [OSTI]

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

    2002-01-01

    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.

  6. (Melanin-Sensitized Solar Cell) : 696220016

    E-Print Network [OSTI]

    platinum thin film for counter-electrode, uses solar simulator to measure efficiency at AM 1.5 (100 mW/cm2 (Melanin-Sensitized Solar Cell) : : : 696220016 #12; #12;#12; #12;I PLD the majority dye-sensitized solar cell research all uses the Ruthenium-complex as a light harvester

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

    E-Print Network [OSTI]

    Lee, Tao Hua

    2012-02-14

    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...

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

    E-Print Network [OSTI]

    Rollins, Andrew M.

    Semitransparent ultrathin CdTe solar cells Semitransparent ultrathin CdTe solar cells lines · Thinfilm CIGS--not available in transparent form · Dye sensitized solar thin films· Dye.E. McCandless, W.A. Buchanan. "High throughput processing of CdTe/CdS solar cells with thin absorber

  9. Solar Cells DOI: 10.1002/anie.200904492

    E-Print Network [OSTI]

    Wang, Zhong L.

    Solar Cells DOI: 10.1002/anie.200904492 Optical Fiber/Nanowire Hybrid Structures for Efficient Three- Dimensional Dye-Sensitized Solar Cells** Benjamin Weintraub, Yaguang Wei, and Zhong Lin Wang* Renewable and green energy are the technological drivers of the future economy. Solar cells (SCs) are one

  10. Molecular Solar Cells DOI: 10.1002/anie.200904725

    E-Print Network [OSTI]

    McGehee, Michael

    Molecular Solar Cells DOI: 10.1002/anie.200904725 Panchromatic Response in Solid-State Dye-Sensitized Solar Cells Containing Phosphorescent Energy Relay Dyes** Jun-Ho Yum, Brian E. Hardin, Soo-Jin Moon-sensitized solar cells (DSCs) based on nanocrystalline semiconductors have been intensively studied because

  11. Coaxial silicon nanowires as solar cells and nanoelectronic power sources

    E-Print Network [OSTI]

    Lee, Ka Yee C.

    . Lieber1,2 Solar cells are attractive candidates for clean and renewable power1,2 ; with miniaturizationLETTERS Coaxial silicon nanowires as solar cells and nanoelectronic power sources Bozhi Tian1 in polymer- blend4 and dye-sensitized solar cells5,6 , to demonstrate carrier multiplication7 , and to enable

  12. First row transition metal complexes for application to dye-sensitised solar cells 

    E-Print Network [OSTI]

    Linfoot, Charlotte Louise

    2011-01-01

    Ruthenium (II) complexes are used extensively in photoelectrochemical and photophysical devices, such as Dye-Sensitized Solar Cells (DSSCs). The use of Cu(I) as a possible replacement for Ru(II) has to date had limited ...

  13. Structured SWNTs and Graphene for Solar Cells Kehang Cui, Takaaki Chiba, Xiao Chen, Shohei Chiashi and Shigeo Maruyama*

    E-Print Network [OSTI]

    Maruyama, Shigeo

    1 Structured SWNTs and Graphene for Solar Cells Kehang Cui, Takaaki Chiba, Xiao Chen, Shohei with the graphene-Si solar cell and the SWNT-Si solar cell using the random-oriented SWNT film, the pristine micro nanotubes, Micro-honeycomb, SWNT-Si solar cell, Dye-sensitized solar cell, Graphene 1. Introduction Single

  14. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    2. Graztel, M. Solar Energy Conversion by Dye-Sensitized17. M. Grätzel, Solar Energy Conversion by Dye-Sensitizedas a low-cost solar energy conversion technology. 1.3.2

  15. Oxide nanowires for solar cell applications Qifeng Zhang, Supan Yodyingyong, Junting Xi, Daniel Myers and Guozhong Cao*

    E-Print Network [OSTI]

    Cao, Guozhong

    and the application of nanomaterials in dye-sensitized solar cells (DSCs) and organic/inorganic hybrid solar cells. HeOxide nanowires for solar cell applications Qifeng Zhang, Supan Yodyingyong, Junting Xi, Daniel Oxide nanowire arrays were studied for their applications to solar cells. It was demonstrated

  16. Enhanced Photovoltaic Performance of Nanostructured Hybrid Solar Cell Using Highly Oriented TiO2 Nanotubes

    E-Print Network [OSTI]

    Cao, Guozhong

    -called third generation of solar cells including dye-sensitized solar cells, DSCs2,3 and organic phoEnhanced Photovoltaic Performance of Nanostructured Hybrid Solar Cell Using Highly Oriented TiO2- tovoltaics, OPVs.4-6 OPVs or polymer-based photovoltaic devices can be processed from solution and have

  17. ZnO nanoparticles and nanowire array hybrid photoanodes for dye-sensitized solar cells

    E-Print Network [OSTI]

    Cao, Guozhong

    NW and TiO2 nanotube arrays.6­9 However, the PCE of such DSC remained low, for example, ZnO NW DSC, typically TiO2 and ZnO network with dye molecules adsorbed onto the sur- face forming a monolayer. Dye into the conduction band of TiO2 or ZnO and transported to charge collector. In order to achieve high power conversion

  18. Dye-Sensitized Solar Cells DOI: 10.1002/anie.200704919

    E-Print Network [OSTI]

    Cao, Guozhong

    at a relatively low level, for example, 1.5% for ZnO nanowires[7] and 4.7% for TiO2 nanotubes.[9] Another way-to-electric conversion efficiency of over 11% has been achieved with films that consist of 20-nm TiO2 nanocrystallites demonstrated theoretically that optical absorption by TiO2 nanocrystalline films can be promoted

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

    E-Print Network [OSTI]

    John, Sajeev

    counterparts. Our design consists of a lattice of modulated-diameter TiO2 nanotubes filled with TiO2 with integrated photonic crystal consisting of modulated-diameter TiO2 nanotubes. The design is shown to absorb a constant volume of dye-coated TiO2 nanoparticles our design gives a maximum achievable photocurrent density

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the followingConcentratingPortalCoolCoronary StentsTheEnergy

  1. Improved Dye-Sensitized Solar Cell (DSSC) for Higher Energy Conversion

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLAN FOR THE SITE-218 58 84 168 167 164Curves

  2. Improving the efficiency of water splitting in dye-sensitized solar cells

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy,Impact AssessmentsImproving ReactorElectricImproving theby

  3. Graphene-based transparent flexible electrodes for polymer solar cells Jaehan Jung,b

    E-Print Network [OSTI]

    Lin, Zhiqun

    -conjugated rod­rod BCPs for solar energy conversion; highlight the correlation between the microphase on the energy-level alignment of the donor and acceptor materials and the nanostructured photoactive layer,12 dots, polymer solar cells, dye-sensitized solar cells, graphene electrode materials

  4. Controlled CVD Growth and Solar Cell Applications of Single-Walled Carbon Nanotubes Shigeo Maruyama1, Kehang Cui1, Takaaki Chiba1, Hua An1, Rong Xiang1, Shohei Chiashi1, Yutaka Matsuo2,

    E-Print Network [OSTI]

    Maruyama, Shigeo

    Controlled CVD Growth and Solar Cell Applications of Single-Walled Carbon Nanotubes Shigeo Maruyama for the applications of SWNT/Si solar cells [1, 2], organic bulk heterojunction solar cells, dye-sensitized solar cells and perovskite-type solar cells. Highly transparent-conductive SWNT films from controlled bundle

  5. Oncor Energy Efficiency Programs Solar Photovoltaic and Demand Response 

    E-Print Network [OSTI]

    Tyra, K.; Hanel, J.

    2012-01-01

    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 ...

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

    E-Print Network [OSTI]

    Turro, Claudia

    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

  7. Uniaxial Freezing, Freeze-Drying, and Anodization for Aligned Pore Structure in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Meyers, Marc A.

    Uniaxial Freezing, Freeze-Drying, and Anodization for Aligned Pore Structure in Dye to create the micro- and nanostructures are uniaxial freezing, freeze-drying, and anodization or etching

  8. Ni(III)/(IV) Bis(dicarbollide) as a Fast, Noncorrosive Redox Shuttle for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    multiple redox transformations involving net charges of -2, -1, and 0, with Ni(II), Ni(III) (3), and Ni at the electrolyte interface. Previous DSC Fc/Fc+ couple work showed that dark currents can be suppressed by TiO2/Fc+ vs SCE (translating to a smaller potential difference between the dark electrode and quasi

  9. Morphology control and characterization of single-walled carbon nanotube counter electrodes in dye sensitized solar cells

    E-Print Network [OSTI]

    Maruyama, Shigeo

    treatment (top view). FTO photo electrode counter electrode FTOSWNT I - /I3 - electrolyte TiO2/Ru-dyeFTO photo electrode counter electrode FTOSWNT I - /I3 - electrolyte TiO2/Ru-dye Fig. 3 Structure of dye Morphology control and characterization of single-walled carbon nanotube counter electrodes

  10. Investigation of layer-by-layer assembly and M13 bacteriophage nanowires for dye-sensitized solar cells

    E-Print Network [OSTI]

    Ladewski, Rebecca L. (Rebecca Lynn)

    2012-01-01

    A number of challenges related to the development of new organic-inorganic photovoltaic systems exist, including the ability to enhance the materials interface and improve the control required in development of nanoscale ...

  11. In situ hydrothermal growth of hierarchical ZnO nanourchin for high-efficiency dye-sensitized solar cells

    E-Print Network [OSTI]

    Cao, Guozhong

    2014 Elsevier B.V. All rights reserved. 1. Instruction One-dimensional (1D) nanostructured metal oxides functional materials for applications in photocatalysis, gas sensors, electrochromic devices, light-emitting diodes, field emitters, and energy conversion and storage systems [1e10]. Among these applications, 1D

  12. Electron Transfer Dynamics in Efficient Molecular Solar Cells

    SciTech Connect (OSTI)

    Meyer, Gerald John

    2014-10-01

    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.

  13. Nanoscale Charge Transport in Excitonic Solar Cells

    SciTech Connect (OSTI)

    Venkat Bommisetty, South Dakota State University

    2011-06-23

    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.

  14. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    Nov, 2005). Chapter 4 Hybrid solar cells with 3-dimensionalinorganic nanocrystal solar cells 5.1 Introduction In recentoperation of organic based solar cells and distinguish them

  15. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    nanocrystal-polymer solar cells The full potential of hybridto reach the full potential of polymer blend solar cells.solar cells described here offer several potential

  16. An all-inorganic type-II heterojunction array with nearly full solar spectral response based on ZnO/ZnSe core/shell nanowires

    E-Print Network [OSTI]

    Nasipuri, Asis

    on inorganic or organic materials, such as silicon-based thin film solar cells,2 multi-junction solar cells,3 architecture. 1. Introduction Solar cells have been a subject of great interest due to the growing awareness and dye-sensitized solar cells (DSSCs).4 Nevertheless, most of them suffer from either high cost

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

    E-Print Network [OSTI]

    Skotheim, T.

    2010-01-01

    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

  18. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    will enable optimal solar cell efficiencies in multiple bandlow cost, high efficiency hybrid solar cells. 4.6 Conclusioncosts and improving efficiencies of solar photovoltaic

  19. Broadband dye-sensitized upconversion of near-infrared light

    E-Print Network [OSTI]

    .5 spectrum power conversion effi- ciency of a single-bandgap solar cell can be increased by up to 50-junction solar cell. However, the practical applicability of the most efficient known upconversion materials be extended to cover any part of the solar spectrum by using a set of dye molecules with overlapping

  20. Improved Electrodes and Electrolytes for Dye-Based Solar Cells

    SciTech Connect (OSTI)

    Harry R. Allcock; Thomas E. Mallouk; Mark W. Horn

    2011-10-26

    The most important factor in limiting the stability of dye-sensitized solar cells is the use of volatile liquid solvents in the electrolytes, which causes leakage during extended operation especially at elevated temperatures. This, together with the necessary complex sealing of the cells, seriously hampers the industrial-scale manufacturing and commercialization feasibilities of DSSCs. The objective of this program was to bring about a significant improvement in the performance and longevity of dye-based solar cells leading to commercialization. This had been studied in two ways first through development of low volatility solid, gel or liquid electrolytes, second through design and fabrication of TiO2 sculptured thin film electrodes.

  1. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    basic bilayer CdTe/CdSe solar cells described above. Figurecomplete CdTe/CdSe nanocrystal solar cell (B). gap variationlength for CdSe-P3HT hybrid solar cells. (b) Current-voltage

  2. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    of organic based solar cells and distinguish them from theirNov, 2005). Chapter 4 Hybrid solar cells with 3-dimensionalinorganic nanocrystal solar cells 5.1 Introduction In recent

  3. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    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

  4. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    of organic based solar cells and distinguish them from theirinorganic nanocrystal solar cells 5.1 Introduction In recentNov, 2005). Chapter 4 Hybrid solar cells with 3-dimensional

  5. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    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

  6. 19th International Conference on Photochemical Conversion and Storage of Solar Energy

    E-Print Network [OSTI]

    Goddard III, William A.

    IPS-19 19th International Conference on Photochemical Conversion and Storage of Solar Energy 29@caltech.edu Prof. Harry Gray hbg@caltech.edu Prof. Jonas Peters jpeters@caltech.edu Dye-Sensitized & Polymer Solar Cells Advanced Photovoltaics Photocatalysis Solar Fuels Production Photoelectrochemistry

  7. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01

    cell. The solar cell’s power conversion efficiency, ? is theEfficiency ..5 Thermal Managements of SolarTemperature on Efficiency Photons incident on a solar cell

  8. Advances in solar photovoltaics are urgently needed to increase the performance and reduce the cost of harvesting solar power. Solution-processed photovoltaics are cost-effective to manufacture and offer the potential for physical flexibility.

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    Advances in solar photovoltaics are urgently needed to increase the performance and reduce the cost of harvesting solar power. Solution-processed photovoltaics are cost-effective to manufacture and offer chemistry. In particular, we focus on dye-sensitized solar cells (DSSCs)1 , organic photovoltaics2

  9. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    to create low-cost solar cells with performance andachieving stable and low-cost solar energy conversion.of large-scale solar power at low costs (1). The most

  10. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    Solar Energy Materials and Solar Cells 93(10): 1728-1723,Solar Energy Materials and Solar Cells 92(8) 39. Sima, C.Y. , Warta, W. , Dunlop, E.D. Solar Cell efficiency tables (

  11. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    glass contact Solar Energy Materials and Solar Cells 93(10):cells. Solar Energy Materials and Solar Cells 92(8) 39.potential of these materials for solar energy conversion,

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

    E-Print Network [OSTI]

    Dang, Xiangnan

    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). ...

  13. 1 Rectangular Bunched Rutile TiO2 Nanorod Arrays Grown on Carbon 2 Fiber for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Wang, Zhong L.

    a study of rectangular bunched 13 TiO2 nanorod (NR) arrays grown on carbon fibers (CFs) 14 from titanium are fabricated by using etched TiO2 18 NR-coated CFs as the photoanode. An absolute energy 19 conversion (CFs). Relative to the traditional photoanode, CFs are 47 flexible, conductive, and stable in liquid

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

    E-Print Network [OSTI]

    Surface Passivation of Nanoporous TiO2 via Atomic Layer Deposition of ZrO2 for Solid-State Dye; ReVised Manuscript ReceiVed: August 22, 2009 We report here the utilization of atomic layer deposition to passivate surface trap states in mesoporous TiO2 nanoparticles for solid-state dye

  15. Versatile Three-Dimensional Virus-Based Template for Dye-Sensitized Solar Cells with Improved Electron Transport and Light Harvesting

    E-Print Network [OSTI]

    Chen, Po-Yen

    By genetically encoding affinity for inorganic materials into the capsid proteins of the M13 bacteriophage, the virus can act as a template for the synthesis of nanomaterial composites for use in various device applications. ...

  16. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    grids,? Solar Energy Materials and Solar Cells, 2011, 95(5),layer,? Solar Energy Materials and Solar Cells, 2013, 113,thickness,? Solar Energy Materials and Solar Cells, 2013,

  17. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    grids,? Solar Energy Materials and Solar Cells, 2011, 95(5),thickness,? Solar Energy Materials and Solar Cells, 2013,analysis,? Solar Energy Materials and Solar Cells, [130] J.

  18. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01

    voltage . The cell output power is given by:solar cell. The solar cell’s power conversion efficiency, ?ratio of the solar cell output power to the incident light

  19. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01

    heat exchangers, and solar cells," Sci-Tech News, vol. 65,Solar Energy Materials and Solar Cells, vol. 86, pp. 451-in crystalline silicon solar cells," Renewable Energy, vol.

  20. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01

    heat exchangers, and solar cells," Sci-Tech News, vol. 65,Solar Energy Materials and Solar Cells, vol. 86, pp. 451-Nanostructured Silicon- Based Solar Cells, 2013. X. C. Tong,

  1. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    requisite, for solar energy conversion based on the donor-stable and low-cost solar energy conversion. Supplementalsolar cells blending organic semiconductors and inorganic semiconductor nanocrystals offer the potential to deliver efficient energy conversion

  2. Photovoltaic solar cell

    DOE Patents [OSTI]

    Nielson, Gregory N.; Gupta, Vipin P.; Okandan, Murat; Watts, Michael R.

    2015-09-08

    A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.

  3. Effects of molecular interface modification in hybrid organic-inorganic photovoltaic cells

    E-Print Network [OSTI]

    McGehee, Michael

    Effects of molecular interface modification in hybrid organic-inorganic photovoltaic cells Chiatzun in hybrid TiO2/regioregular poly 3-hexylthiophene P3HT photovoltaic cells. By employing a series of para in the field of organic photovoltaic PV cells1­7 and dye-sensitized solar cells DSSCs Refs. 7­10 as part

  4. Heterojunction solar cell

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO)

    1994-01-01

    A high-efficiency single heterojunction solar cell 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 effiency 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.

  5. Heterojunction solar cell

    DOE Patents [OSTI]

    Olson, J.M.

    1994-08-30

    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.

  6. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    W. , Dunlop, E.D. Solar Cell efficiency tables (version 38).Grätzel. A Low-Cost, High-Efficiency Solar Cell Based on Dyeand E.D. Dunlop. Solar Cell efficiency tables (version 38).

  7. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01

    Nanostructured Silicon- Based Solar Cells, 2013. X. C. Tong,heat exchangers, and solar cells," Sci-Tech News, vol. 65,in crystalline silicon solar cells," Renewable Energy, vol.

  8. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    there is a great deal of interest in thin-film solar cells.Thin-film solar cells are made from a variety oflimitation in all thin-film solar cell technologies is that

  9. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    the harvesting potential of our solar cell and suggests thedye sensitized solar cell and the potential they can serveSchottky solar cells has demonstrated the potential of these

  10. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01

    D. Mills, "Cooling of photovoltaic cells under concentratedelectric performance of a photovoltaic cells by cooling andof Photovoltaic Solar Cell A photovoltaic cell is a

  11. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    prediction of the efficiency limitation of solar cell givenperfect solar cell absorber. [29] Following this prediction,

  12. Nanocrystal Solar Cells

    SciTech Connect (OSTI)

    Gur, Ilan

    2006-12-15

    This dissertation presents the results of a research agenda aimed at improving integration and stability in nanocrystal-based solar cells through advances in active materials and device architectures. The introduction of 3-dimensional nanocrystals illustrates the potential for improving transport and percolation in hybrid solar cells and enables novel fabrication methods for optimizing integration in these systems. Fabricating cells by sequential deposition allows for solution-based assembly of hybrid composites with controlled and well-characterized dispersion and electrode contact. Hyperbranched nanocrystals emerge as a nearly ideal building block for hybrid cells, allowing the controlled morphologies targeted by templated approaches to be achieved in an easily fabricated solution-cast device. In addition to offering practical benefits to device processing, these approaches offer fundamental insight into the operation of hybrid solar cells, shedding light on key phenomena such as the roles of electrode-contact and percolation behavior in these cells. Finally, all-inorganic nanocrystal solar cells are presented as a wholly new cell concept, illustrating that donor-acceptor charge transfer and directed carrier diffusion can be utilized in a system with no organic components, and that nanocrystals may act as building blocks for efficient, stable, and low-cost thin-film solar cells.

  13. Solar cell array interconnects

    DOE Patents [OSTI]

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

    1995-11-14

    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.

  14. Photovoltaic solar cell

    DOE Patents [OSTI]

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

    2014-05-20

    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.

  15. Solar cell array interconnects

    DOE Patents [OSTI]

    Carey, Paul G. (Mountain View, CA); Thompson, Jesse B. (Brentwood, CA); Colella, Nicolas J. (Livermore, CA); Williams, Kenneth A. (Livermore, CA)

    1995-01-01

    Electrical interconnects 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.

  16. Photovoltaic solar cell

    DOE Patents [OSTI]

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

    2013-11-26

    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.

  17. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01

    potential as a low-cost solar energy conversion technology.Grätzel. A Low-Cost, High-Efficiency Solar Cell Based on Dye1) reducing the cost of solar cells by depositing

  18. DFTand k.p modellingof the phase transitions of lead and tin halideperovskites for photovoltaic cells

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    DFTand k.p modellingof the phase transitions of lead and tin halideperovskites for photovoltaic Rennes, UMR 6226, 35042 Rennes, France KeywordsPerovskite, photovoltaic, first-principles calculations, k these hybrid semiconductor photovoltaic cells(HSPC) maydiffer from the one of dye-sensitized solar cells (DSSC

  19. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    Solar Energy Materials and Solar Cells, 2011, 95(5), 1339-heterojunction organic solar cells,? Solar Energy MaterialsSolar Energy Materials and Solar Cells, 2013, 113, 85-89. [

  20. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01

    ratio of the solar cell output power to the incident lightpower to operate the fan. Natural cooling is preferred for solar

  1. Broad spectrum solar cell

    DOE Patents [OSTI]

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

    2007-05-15

    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.

  2. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    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

  3. Monolithic tandem solar cell

    DOE Patents [OSTI]

    Wanlass, Mark W. (Golden, CO)

    1991-01-01

    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, and (c) a second photoactive subcell on the first subcell. The first photoactive 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.

  4. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    Best research solar cells efficiencies. [cited 2010; ChartHisikawa Y, Warta W. Solar cell efficiency tables (Versionusing organic solar cells, the efficiencies of these devices

  5. High efficiency, radiation-hard solar cells

    E-Print Network [OSTI]

    Ager III, J.W.; Walukiewicz, W.

    2004-01-01

    Igari, and W. Warta, “Solar Cell Efficiency Tables (Version56326 High efficiency, radiation-hard solar cells Finalprototype high efficiency multijunction (MJ) solar cells use

  6. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    and G. Li, ?Polymer solar cells with enhanced open-circuittandem and triple-junction solar cells,? Materials, 2012, 5(high performance solar cells,” Advanced Energy Materials,

  7. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    Angeles Organic Tandem Solar Cells: Design and Formation AOrganic Tandem Solar Cells: Design and Formation by Chun-multi-junction tandem solar-cell design. Given this design,

  8. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    performance of multi-junction solar cells combining III-VMulti-Junction Solar Cells .improvement: Multi-Junction Solar Cells 2.1 Loss mechanism

  9. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    T. Recent Advances in Organic Solar Cells. Advances incharacterization of organic solar cells. Adv Funct Mater.Voltage Characteristics of Organic Solar Cells. [cited 2010;

  10. TJ Solar Cell

    SciTech Connect (OSTI)

    Friedman, Daniel

    2009-04-17

    This talk will discuss recent developments in III-V multijunction photovoltaic technology which have led to the highest-efficiency solar cells ever demonstrated. The relationship between the materials science of III-V semiconductors and the achievement of record solar cell efficiencies will be emphasized. For instance, epitaxially-grown GAInP has been found to form a spontaneously-ordered GaP/InP (111) superlattice. This ordering affects the band gap of the material, which in turn affects the design of solar cells which incorporate GaInP. For the next generation of ultrahigh-efficiency III-V solar cells, we need a new semiconductor which is lattice-matched to GaAs, has a band gap of 1 eV, and has long minority-carrier diffusion lengths. Out of a number of candidate materials, the recently-discovered alloy GaInNAs appears to have the greatest promise. This material satisfies the first two criteria, but has to date shown very low diffusion lengths, a problem which is our current focus in the development of these next-generation cells.

  11. Amorphous semiconductor solar cell

    DOE Patents [OSTI]

    Dalal, Vikram L. (Newark, DE)

    1981-01-01

    A solar cell comprising a back electrical contact, amorphous silicon semiconductor base and junction layers and a top electrical contact includes in its manufacture the step of heat treating the physical junction between the base layer and junction layer to diffuse the dopant species at the physical junction into the base layer.

  12. 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).

  13. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01

    properties,” Solar Energy Materials and Solar Cells, vol.G. Dhere, Solar Energy Materials and Solar Cells 2006 , 90,devices, Solar Energy Materials and Solar Cells (2012), doi:

  14. Leakage pathway layer for solar cell

    DOE Patents [OSTI]

    Luan, Andy; Smith, David; Cousins, Peter; Sun, Sheng

    2015-12-01

    Leakage pathway layers for solar cells and methods of forming leakage pathway layers for solar cells are described.

  15. High efficiency, radiation-hard solar cells

    E-Print Network [OSTI]

    Ager III, J.W.; Walukiewicz, W.

    2004-01-01

    efficiency multijunction (MJ) solar cells use componentsin current multijunction (MJ) solar cells (GaAs and GaInP)

  16. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    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

  17. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    8-12. Würfel P. Physics of solar cells : from principles toPhotocell for Converting Solar Radiation into Electricalgeneration photovoltaics: solar cells for 2020 and beyond.

  18. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    solar cells,” Advanced Energy Materials, 2011, 1(5), 771-collecting grids,? Solar Energy Materials and Solar Cells,laboratory stability studies,” Energy Technology, 2014. [

  19. Solar Energy Materials & Solar Cells 91 (2007) 13881391 Bifacial configurations for CdTe solar cells

    E-Print Network [OSTI]

    Romeo, Alessandro

    2007-01-01

    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

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

    SciTech Connect (OSTI)

    Not Available

    2012-07-01

    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.

  1. Dye-sensitized near-infrared room-temperature photovoltaic photon detectors

    E-Print Network [OSTI]

    Perera, A. G. Unil

    coated n-type substrate and p-CuSCN (band gap 3.6 eV) as the hole collector is fabricated and tested been adopted to devise solar cells. A near-infrared (NIR) sensitive heterojunction n-TiO2/D boundaries or impurity sites.6 These attractive features of DSN have been exploited to construct solar cells

  2. Monolithic tandem solar cell

    DOE Patents [OSTI]

    Wanlass, Mark W. (Golden, CO)

    1994-01-01

    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.

  3. Monolithic tandem solar cell

    DOE Patents [OSTI]

    Wanlass, M.W.

    1994-06-21

    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.

  4. Solar cell module lamination process

    DOE Patents [OSTI]

    Carey, Paul G. (Mountain View, CA); Thompson, Jesse B. (Brentwood, CA); Aceves, Randy C. (Tracy, CA)

    2002-01-01

    A solar cell module lamination process using fluoropolymers to provide protection from adverse environmental conditions and thus enable more extended use of solar cells, particularly in space applications. A laminate of fluoropolymer material provides a hermetically sealed solar cell module structure that is flexible and very durable. The laminate is virtually chemically inert, highly transmissive in the visible spectrum, dimensionally stable at temperatures up to about 200.degree. C. highly abrasion resistant, and exhibits very little ultra-violet degradation.

  5. Improving Solar-Cell Efficiency

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

    2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Improving Solar Cell Efficiency October 7, 2014 Bookmark and Share The two-dimensional grazing...

  6. Solar Energy Materials & Solar Cells 90 (2006) 34073415 High-efficiency flexible CdTe solar cells

    E-Print Network [OSTI]

    Romeo, Alessandro

    2006-01-01

    Solar Energy Materials & Solar Cells 90 (2006) 3407­3415 High-efficiency flexible CdTe solar cells: Solar cells; Thin films; CdTe; Flexible solar cells; Space solar cells; Solar energy ARTICLE IN PRESS for Renewable Energy Systems and Technology), Department of Electronic and Electrical Engineering, Loughborough

  7. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    78-85. F. Dimroth, “ High-efficiency solar cells from III-Vand E. D. Dunlop, ?Solar cell efficiency tables (versionOptimizing the organic solar cell efficiency: Role of the

  8. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    MA. Third generation photovoltaics: solar cells for 2020 andSolar cell efficiency tables (Version 27). Prog Photovoltaics.Solar Cells Among other application areas, using graphene in organic photovoltaics

  9. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    electrodes in Organic Solar Cells One of the early problemslow efficiencies in one layer organic solar cells made themgraphene based solar cells can be reached up to one tenth of

  10. The challenges of organic polymer solar cells

    E-Print Network [OSTI]

    Saif Addin, Burhan K. (Burhan Khalid)

    2011-01-01

    The technical and commercial prospects of polymer solar cells were evaluated. Polymer solar cells are an attractive approach to fabricate and deploy roll-to-roll processed solar cells that are reasonably efficient (total ...

  11. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    Würfel P. Physics of solar cells : from principles to newgeneration photovoltaics: solar cells for 2020 and beyond.MB. INDIUM-PHOSPHIDE SOLAR-CELLS MADE BY ION- IMPLANTATION.

  12. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    and G. Li, ?Polymer solar cells with enhanced open-circuittandem and triple-junction solar cells,? Materials, 2012, 5(for tandem organic solar cells,? Journal of Applied Physics,

  13. Nontoxic quantum dot research improves solar cells

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

    Nontoxic quantum dot research improves solar cells Nontoxic quantum dot research improves solar cells Solar cells made with low-cost, nontoxic copper-based quantum dots can achieve...

  14. High efficiency, radiation-hard solar cells

    E-Print Network [OSTI]

    Ager III, J.W.; Walukiewicz, W.

    2004-01-01

    M. , “III-V compound multi-junction solar cells: present andand fabricating multi-junction solar cells using a singleanalysis of multi-junction space solar cells,” Nuc. Instrum.

  15. Commercialization of Novel Organic Solar Cells

    E-Print Network [OSTI]

    Kassegne, Samuel Kinde

    Commercialization of Novel Organic Solar Cells Master of Engineering Final Report Shanel C. Miller................................................................................................................... 12 2.1 How do Solar Cells Work?.................................................................................................. 12 2.2 Types of Solar Cells that Exist Today

  16. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    organic tandem and triple-junction solar cells,? Materials,Current-matched triple-junction solar cell reaching 41.1%demonstrations of triple-junction solar cells outperforming

  17. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    Improvement: Multi-Junction Solar Cells .2 Design improvement: Multi-Junction Solar Cells 2.1 LossImprovement of transparent metal top electrodes for organic solar cells

  18. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    contacts for tandem organic solar cells,? Journal of AppliedITO-free flexible organic solar cells with printed currentC. de Mello, “ Efficient organic solar cells with solution-

  19. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    Y. Wu, and G. Li, ?Polymer solar cells with enhanced open-tandem and triple-junction solar cells,? Materials, 2012, 5(molecules for high performance solar cells,” Advanced Energy

  20. Nanowire-based All Oxide Solar Cells

    E-Print Network [OSTI]

    Yang, Peidong

    2009-01-01

    we present a novel solar cell design that combines the idealin many ways, an ideal design for a solar cell. The use of a

  1. 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 Pressing energy problems provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell...

  2. Biomimetic Dye Molecules for Solar Cells

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

    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...

  3. Multiple Exciton Generation Solar Cells

    SciTech Connect (OSTI)

    Luther, J. M.; Semonin, O. E.; Beard, M. C.; Gao, J.; Nozik, A. J.

    2012-01-01

    Heat loss is the major factor limiting traditional single junction solar cells to a theoretical efficiency of 32%. Multiple Exciton Generation (MEG) enables efficient use of the solar spectrum yielding a theoretical power conversion efficiency of 44% in solar cells under 1-sun conditions. Quantum-confined semiconductors have demonstrated the ability to generate multiple carriers but present-day materials deliver efficiencies far below the SQ limit of 32%. Semiconductor quantum dots of PbSe and PbS provide an active testbed for developing high-efficiency, inexpensive solar cells benefitting from quantum confinement effects. Here, we will present recent work of solar cells employing MEG to yield external quantum efficiencies exceeding 100%.

  4. Solar Energy Materials & Solar Cells 91 (2007) 13881391 Bifacial configurations for CdTe solar cells

    E-Print Network [OSTI]

    Romeo, Alessandro

    2007-01-01

    Solar Energy Materials & Solar Cells 91 (2007) 1388­1391 Bifacial configurations for CdTe solar Verona, Italy e Department of Electronic and Electrical Engineering, Centre for Renewable Energy Systems We present a different back contact for CdTe solar cell by the application of only a transparent

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

    E-Print Network [OSTI]

    Romeo, Alessandro

    2006-01-01

    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

  6. Module level solutions to solar cell polarization

    DOE Patents [OSTI]

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

    2012-05-29

    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.

  7. Un-Nanostructuring Solar Cells | ANSER Center | Argonne-Northwestern...

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

    Un-Nanostructuring Solar Cells Home > Research > ANSER Research Highlights > Un-Nanostructuring Solar Cells...

  8. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01

    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

  9. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    into organic solar cells resulted in remarkable improvementssolar cells, hole collection is enhanced more. When the reasons of these improvements

  10. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    junction tandem solar cells, one wide-bandgap material withare being applied in one tandem solar-cell device, theTo utilize solar radiation more effectively, one possible

  11. Nanowire-based All Oxide Solar Cells

    E-Print Network [OSTI]

    Yang, Peidong

    2009-01-01

    1999; 7: 471. 6) Rai, B.P. Solar Cells, 1988, 25, 265. 7)Paul, G.K. , Sakurai, T. , Solar Energy, 2006, 80, 715. 9)1999, 2) Green, M.A. , Solar Cells, 1982, Prentice-Hall,

  12. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    solar cells,” Advanced Energy Materials, 2011, 1(5), 771-collecting grids,? Solar Energy Materials and Solar Cells,layer,” Advanced Energy Materials, 2012, 2(8), 945-949. [

  13. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    status and future potential,? Solar Energy, 2005, 79(1), 78-Organic solar cells: their developments and potentials,?Therefore, organic solar cells, with potential in low-cost

  14. Dye-sensitized solar cell with a pair of carbon-based electrodes This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    .179.64.2 The article was downloaded on 11/05/2012 at 08:10 Please note that terms and conditions apply. View the table of contents for this issue, or go to the journal homepage for more Home Search Collections Journals About the incident light must enter from the counter electrode. On the other hand, the counter electrode is made

  15. Top-illuminated dye-sensitized solar cells with a room-temperature-processed ZnO photoanode on metal substrates and a Pt-coated Ga-doped ZnO counter electrode

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    /03/2011 at 11:15 Please note that terms and conditions apply. View the table of contents for this issue, or go to the journal homepage for more Home Search Collections Journals About Contact us My IOPscience #12;IOP tin oxide (FTO) glass, allowing the light to enter from the bottom of the glass substrate. However

  16. Solar cell with back side contacts

    DOE Patents [OSTI]

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

    2013-12-24

    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.

  17. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    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

  18. Solar Energy Materials & Solar Cells 91 (2007) 15991610 Improving solar cell efficiency using photonic band-gap materials

    E-Print Network [OSTI]

    Dowling, Jonathan P.

    2007-01-01

    efficiency of solar cell devices without using concentrators. r 2007 Elsevier B.V. All rights reserved) solar energy conversion systems (or solar cells) are the most widely used power systems. HoweverSolar Energy Materials & Solar Cells 91 (2007) 1599­1610 Improving solar cell efficiency using

  19. Solar-Hydrogen Fuel-Cell Vehicles

    E-Print Network [OSTI]

    DeLuchi, Mark A.; Ogden, Joan M.

    1993-01-01

    264. DeLuchi M. A. (1992). Hydrogen Fuel-Cell Vehicles. Re-or regulation. Solar-Hydrogen Fuel-Cell Vehicles MarkA.Solar-Hydrogen Fuel-Cell Mark Ao DeLuchi Joan M. Ogden

  20. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    band impact ionization and solar cell efficiency,” J. Appl.Solar Energy Materials and Solar Cells 92, 273, (2008). [28]third generation solar cells Solar cells may be formed using

  1. Process Development for Nanostructured Photovoltaics

    SciTech Connect (OSTI)

    None

    2011-05-31

    Fact sheet describing low-cost nanofabrication method to develop nanostructured, dye-sensitized solar cells

  2. Solar cells with a twist Comments ( 35)

    E-Print Network [OSTI]

    Rogers, John A.

    Solar cells with a twist Article Comments ( 35) JULIE STEENHUYSEN REUTERS OCTOBER 7, 2008 AT 9:58 AM EDT CHICAGO -- U.S. researchers have found a way to make efficient silicon-based solar cells of buildings as opportunities for solar energy," Prof. Rogers said in a telephone interview. Solar cells, which

  3. Limiting Emission Angle for Improved Solar Cell

    E-Print Network [OSTI]

    Limiting Emission Angle for Improved Solar Cell Performance While direct light enters a solar cell will explore the potential benefits to limiting the emission angles of realistic solar cells, with efficiencies cooling, waste heat recovery and solar electricity generation, low values of the thermoelectric figure

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

    E-Print Network [OSTI]

    Schiff, Eric A.

    2003-01-01

    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

  5. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    impact ionization and solar cell efficiency,” J. Appl. Phys.intermediate band high efficiency solar cell,” Prog. Inthe application of high efficiency solar cells [1-5]. The

  6. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    of analytical expressions for solar cell fill factors.Solar Cells 7, 31. A. Luque and V. Andreev, Concentratorenergy gap terrestrial solar cells. J. Appl. Phys. 51,

  7. Oligo and Poly-thiophene/Zno Hybrid Nanowire Solar Cells

    E-Print Network [OSTI]

    Briseno, Alejandro L.

    2010-01-01

    ZnO Hybrid Nanowire Solar Cells Alejandro L. Briseno, Thomashybrid single nanowire solar cell. End-functionalized oligo-Individual nanowire solar cell devices exhibited well-

  8. Hybrid Solar Cells based on Gallium Arsenide Nanopillars

    E-Print Network [OSTI]

    Haddad, Michael Anthony

    2014-01-01

    Polymer-Based Organic Solar Cells. Chemical Reviews, 2007.et al. , Hybrid Heterojunction Solar Cell Based on Organic–styrenesulfonate) hybrid solar cells. Nanotechnology, 2010.

  9. Optimizing Morphology of Bulk Heterojunction Polymer Solar Cells

    E-Print Network [OSTI]

    Gao, Jing

    2014-01-01

    Heterojunction Polymer Solar Cells A dissertation submittedBulk Heterojunction Polymer Solar Cells by Jing Gao Doctorheterojunction polymer solar cells is profoundly influenced

  10. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    the-art thin film solar cell design and processing becauseto incorporate into the solar cell design the materials withor conventional tandem solar cell designs. The physical

  11. Organic Solar Cells: Absolute Measurement of Domain Composition...

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

    Organic Solar Cells: Absolute Measurement of Domain Composition and Nanoscale Size Distribution Explains Performance in Solar Cells Organic Solar Cells: Absolute Measurement of...

  12. Oligo and Poly-thiophene/Zno Hybrid Nanowire Solar Cells

    E-Print Network [OSTI]

    Briseno, Alejandro L.

    2010-01-01

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

  13. Berkeley Lab Sheds Light on Improving Solar Cell Efficiency

    E-Print Network [OSTI]

    Lawrence Berkeley National Laboratory

    2007-01-01

    light on improving solar cell efficiency Ernest Orlandomanufacturing methods produce solar cells with an efficiencythe impaired performance of solar cells manufactured from

  14. Highly Mismatched Alloys for Intermediate Band Solar Cells

    E-Print Network [OSTI]

    2005-01-01

    comparison to multijunction solar cells. A detailed balanceachieved with multijunction solar cells based on standardmultijunction designs for improving the power conversion efficiency of solar cells [

  15. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01

    Solar Energy Materials and Solar Cells 2006 , 90, 2181–Solar Energy Materials and Solar Cells, vol. 95, no. 8, pp.Energy Materials and Solar Cells (2012), doi:10.1016/j.

  16. Compensated amorphous silicon solar cell

    DOE Patents [OSTI]

    Carlson, David E. (Yardley, PA)

    1980-01-01

    An amorphous silicon solar cell incorporates a region of intrinsic hydrogenated amorphous silicon fabricated by a glow discharge wherein said intrinsic region is compensated by P-type dopants in an amount sufficient to reduce the space charge density of said region under illumination to about zero.

  17. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    CdTe/CdS thin-film solar cells. Sol Energ Mat Sol C. 2000;p/n-junction solar cells. Sol Energ Mat Sol C. Wohrle D,

  18. Biomimetic Dye Molecules for Solar Cells

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

    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...

  19. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    W-function. Solar Energy Materials and Solar Cells. 2005;86(materials and structures to this energy harvesting problem using organic solarsolar cells - Towards 10 % energy-conversion efficiency. Advanced Materials.

  20. Biomimetic Dye Molecules for Solar Cells

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

    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...

  1. Pokeberries Provide Boost for Solar Cells

    Broader source: Energy.gov [DOE]

    Red dye from the pokeberry weed makes their low-cost, fiber-based solar cells even more energy efficient.

  2. Key Physical Mechanisms in Nanostructured Solar Cells

    SciTech Connect (OSTI)

    Dr Stephan Bremner

    2010-07-21

    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.

  3. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    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

  4. Process of making solar cell module

    DOE Patents [OSTI]

    Packer, M.; Coyle, P.J.

    1981-03-09

    A process is presented for the manufacture of solar cell modules. A solution comprising a highly plasticized polyvinyl butyral is applied to a solar cell array. The coated array is dried and sandwiched between at last two sheets of polyvinyl butyral and at least two sheets of a rigid transparent member. The sandwich is laminated by the application of heat and pressure to cause fusion and bonding of the solar cell array with the rigid transparent members to produce a solar cell module.

  5. Solar cells Improved Hybrid Solar Cells via in situ UV Polymerization

    E-Print Network [OSTI]

    Sibener, Steven

    Solar cells Improved Hybrid Solar Cells via in situ UV Polymerization Sanja Tepavcevic, Seth B mobility of the photoactive layer can be enhanced. 1. Introduction Hybrid solar cells have been developed in the past decade as a promising alternative for traditional Si-based solar cells. A wide-bandgap metal oxide

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

    E-Print Network [OSTI]

    Miller, Owen Dennis

    2012-01-01

    lift-off,” Solar Energy Materials and Solar Cells, vol. 93,conversion,” Solar Energy Materials and Solar Cells, vol.ionisation,” Solar Energy Materials and Solar Cells, vol.

  7. Accurate performance measurement of silicon solar cells

    E-Print Network [OSTI]

    Accurate performance measurement of silicon solar cells William Murray Keogh July 2001 A thesis is an important part of the solar cell manufacturing process. Two classes of measurement can be considered accuracy. The light source is very important when calibrating solar cells. Commonly used light sources

  8. COLLOIDAL SEMICONDUCTOR NANOCRYSTALS BASED SOLAR CELLS

    E-Print Network [OSTI]

    Tessler, Nir

    COLLOIDAL SEMICONDUCTOR NANOCRYSTALS BASED SOLAR CELLS Nir Yaacobi-Gross #12;COLLOIDAL SEMICONDUCTOR NANOCRYSTALS BASED SOLAR CELLS Research Thesis Submitted in Partial Fulfilment of the Requirements type II bulk homojunctions in near IR active all nanocrystals solar cells. Submitted to Adv Mater. 2011

  9. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 03 · Nature of Sunlight 1Montana State University: Solar Cells Lecture 3: Nature of Sunlight Wave-Particle Duality · Light acts as ­ Waves University: Solar Cells Lecture 3: Nature of Sunlight Properties of Light · Sunlight contains photons of many

  10. Nanowire-based All Oxide Solar Cells

    E-Print Network [OSTI]

    Yang, Peidong

    2009-01-01

    7: 471. 6) Rai, B.P. Solar Cells, 1988, 25, 265. 7) Minami,1999, 2) Green, M.A. , Solar Cells, 1982, Prentice-Hall,of ZnO nanowire array used in solar cells, prior to Cu 2 O

  11. Detailed balance analysis of nanophotonic solar cells

    E-Print Network [OSTI]

    Fan, Shanhui

    Detailed balance analysis of nanophotonic solar cells Sunil Sandhu, Zongfu Yu, and Shanhui Fan-voltage characteristic modeling of nanophotonic solar cells. This approach takes into account the intrinsic material non-idealities, and is useful for determining the theoretical limit of solar cell efficiency for a given structure. Our approach

  12. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 04 · Semiconductor Materials · Chapter 1 1Montana State University: Solar Cells Lecture 4: Semiconductor Materials Semiconductor Bond Model · Bohr electrons interact to form bonds 2Montana State University: Solar Cells Lecture 4: Semiconductor Materials

  13. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    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

  14. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    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

  15. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    Cu(InGa)Se-2 thin- film solar cells with ZnSe buffer layers.Stability of CdTe/CdS thin-film solar cells. Sol Energ MatThis so called ‘thin film’ solar cell technology was first

  16. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 07 · EE Fundamentals 1Montana State University: Solar Cells Lecture 7: EE Fundamentals What is Electrical Engineering · Opposite of lightning · Symbolic information: electronics Montana State University: Solar Cells Lecture 7: EE Fundamentals 2 Review

  17. Ames Lab 101: Improving Solar Cell Efficiency

    ScienceCinema (OSTI)

    Biswas, Rana

    2012-08-29

    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.

  18. Nanowire-based All Oxide Solar Cells

    E-Print Network [OSTI]

    Yang, Peidong

    2009-01-01

    toxic elements in some thin film solar cells. The principalsolar cell also employing ZnO nanowires and a Cu 2 O thin film.

  19. Mixed ternary heterojunction solar cell

    DOE Patents [OSTI]

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

    1992-08-25

    A thin film heterojunction solar cell and a method of making it has a p-type layer of mixed ternary I-III-VI.sub.2 semiconductor material in contact with an n-type layer of mixed binary II-VI semiconductor material. The p-type semiconductor material includes a low resistivity copper-rich region adjacent the back metal contact of the cell and a composition gradient providing a minority carrier mirror that improves the photovoltaic performance of the cell. The p-type semiconductor material preferably is CuInGaSe.sub.2 or CuIn(SSe).sub.2.

  20. Berkeley Lab Sheds Light on Improving Solar Cell Efficiency

    E-Print Network [OSTI]

    Lawrence Berkeley National Laboratory

    2007-01-01

    light on improving solar cell efficiency Ernest Orlandomethods produce solar cells with an efficiency of 12-15%;

  1. When Function Follows Form: Plastic Solar Cells | ANSER Center...

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

    When Function Follows Form: Plastic Solar Cells Home > Research > ANSER Research Highlights > When Function Follows Form: Plastic Solar Cells...

  2. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

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

  3. Compensated amorphous silicon solar cell

    DOE Patents [OSTI]

    Devaud, Genevieve (629 S. Humphrey Ave., Oak Park, IL 60304)

    1983-01-01

    An amorphous silicon solar cell including an electrically conductive substrate, a layer of glow discharge deposited hydrogenated amorphous silicon over said substrate and having regions of differing conductivity with at least one region of intrinsic hydrogenated amorphous silicon. The layer of hydrogenated amorphous silicon has opposed first and second major surfaces where the first major surface contacts the electrically conductive substrate and an electrode for electrically contacting the second major surface. The intrinsic hydrogenated amorphous silicon region is deposited in a glow discharge with an atmosphere which includes not less than about 0.02 atom percent mono-atomic boron. An improved N.I.P. solar cell is disclosed using a BF.sub.3 doped intrinsic layer.

  4. Solar Cells, 3 (1981) 337 -340 337 HIGH EFFICIENCY BIFACIAL BACK SURFACE FIELD SOLAR CELLS

    E-Print Network [OSTI]

    del Alamo, Jesús A.

    1981-01-01

    . CUEVAS, A. LUQUE, J. EGUREN and J. DEL ALAMO Instituto de Energia Solar, Escuela Tdcnica Superior deSolar Cells, 3 (1981) 337 - 340 337 HIGH EFFICIENCY BIFACIAL BACK SURFACE FIELD SOLAR CELLS A solar cells are presented. Effi- ciencies of 15.7% and 13.6% were measured under front and back air mass

  5. Solar cells Improved Hybrid Solar Cells via in situ UV Polymerization

    E-Print Network [OSTI]

    Sibener, Steven

    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

  6. Three-junction solar cell

    DOE Patents [OSTI]

    Ludowise, Michael J. (Cupertino, CA)

    1986-01-01

    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.

  7. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01

    Energy Materials and Solar Cells (2012), doi:10.1016/j.Solar Energy Materials and Solar Cells 2012, [4-4] Q. Guo,Energy Materials and Solar Cells 2011, 95, 1421–1436. [4-18

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

    SciTech Connect (OSTI)

    Ansari-Rad, Mehdi; Department of Physics, University of Shahrood, Shahrood ; Anta, Juan A.; Arzi, Ezatollah

    2014-04-07

    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.

  9. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01

    printing,” Solar Energy Materials and Solar Cells, vol. 93,cells,” Solar Energy Materials and Solar Cells, vol. 95, no.for efficient solar energy conversion,” Journal of Materials

  10. Quantum Junction Solar Cells Jiang Tang,,

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    tuning, offering avenues to high-efficiency multijunction cells based on a single materials synthesis To date, the bandgaps of light-absorbing semiconductors making up multijunction solar cells have been quantum dots offer avenues to inexpensive and robust multijunction solar cell architectures. Recently

  11. Solar Cell Modules With Improved Backskin

    DOE Patents [OSTI]

    Gonsiorawski, Ronald C. (Danvers, MA)

    2003-12-09

    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.

  12. Bypass diode for a solar cell

    DOE Patents [OSTI]

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

    2012-03-13

    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.

  13. Current and lattice matched tandem solar cell

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO)

    1987-01-01

    A multijunction (cascade) tandem photovoltaic solar cell device is fabricated of a Ga.sub.x In.sub.1-x P (0.505.ltoreq.X.ltoreq.0.515) top cell semiconductor lattice matched to a GaAs bottom cell semiconductor at a low-resistance heterojunction, preferably a p+/n+ 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.

  14. 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: A Dynamical Investigation Print Wednesday, 03 April 2013 13:32 Spin-coating is extensively used in the lab-based manufacturing of organic solar cells, including...

  15. Pennsylvania Company Develops Solar Cell Printing Technology

    Broader source: Energy.gov [DOE]

    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.

  16. Biomimetic Dye Molecules for Solar Cells

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

    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...

  17. Front contact solar cell with formed emitter

    SciTech Connect (OSTI)

    Cousins, Peter John

    2014-11-04

    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.

  18. Front contact solar cell with formed emitter

    DOE Patents [OSTI]

    Cousins, Peter John (Menlo Park, CA)

    2012-07-17

    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.

  19. EELE408 Photovoltaics Lecture 10 Solar Cell Operation

    E-Print Network [OSTI]

    Kaiser, Todd J.

    of the number of carriers collected by the solar cell to the number of photons of a given energy incident energy is not utilized by the solar cell and instead goes to heating the solar cell 12 solar cell1 EELE408 Photovoltaics Lecture 10 Solar Cell Operation Dr. Todd J. Kaiser tjkaiser

  20. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01

    Processed Cu(In,Ga)(Se,S)2 Solar Cells,” Advanced Energyfor solution processed CuInSxSe2?x solar cells and itson defect properties,” Solar Energy Materials and Solar

  1. Method for processing silicon solar cells

    DOE Patents [OSTI]

    Tsuo, Y. Simon (Golden, CO); Landry, Marc D. (Lafayette, CO); Pitts, John R. (Lakewood, CO)

    1997-01-01

    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 multicrystallline 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. Method for processing silicon solar cells

    DOE Patents [OSTI]

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

    1997-05-06

    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.

  3. Enhancing solar cells with plasmonic nanovoids

    E-Print Network [OSTI]

    Lal, Niraj Narsey

    2012-07-03

    This thesis explores the use of plasmonic nanovoids for enhancing the efficiency of thin-film solar cells. Devices are fabricated inside plasmonically resonant nanostructures, demonstrating a new class of plasmonic photovoltaics. Novel cell...

  4. CRADA Final Report: Process development for hybrid solar cells

    E-Print Network [OSTI]

    Ager, Joel W

    2011-01-01

    the high efficiency, high voltage hybrid tandem solar celltarget efficiency of 30%, the hybrid tandem solar cells have

  5. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01

    absorbed light energy into output electricity. Solar cellselectricity. The remaining 70% of absorbed energy is turned into heat inside the solar

  6. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    is equivalent to irradiance of one solar constant. All thedesigns of QDS solar cells including one, which combined thesunlight into electricity. One is solar thermal electricity

  7. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01

    S. Guha, High-Efficiency Cu2ZnSnSe4 Solar Cells with a TiNfurther improvement on CZTS solar cells efficiency. Finally,Route to High-Efficiency CZTSSe Thin-film Solar Cells, Proc.

  8. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    a photovoltaic solar cell is one which produces electricitythe current of the solar cell is one of the main themes ofsingle junction solar cell is one that is thermodynamically

  9. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    At Silicon Solar Cell Performance. Energ. Conv. 11, 63 (efficiency of solar cells. Sol. Energ. Mat. Sol. C. 139. E.Solar Cells: Comparison between Carrier Multiplication and Down- Conversion, Sol. Energ.

  10. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    two terminal tandem solar cell. Physica E 14, 96 (2002).ultimate efficiency of solar cells. Sol. Energ. Mat. Sol. C.91, 43. T. Markvart, Solar cell as a heat engine: energy–

  11. CRADA Final Report: Process development for hybrid solar cells

    E-Print Network [OSTI]

    Ager, Joel W

    2011-01-01

    development for hybrid solar cells Summary of the specific20 wafers with full tandem solar cell test structure perIII–Nitride/Silicon Tandem Solar Cell,” Appl. Phys. Express

  12. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    of the intermediate band solar cell under nonideal spaceefficient InGaP/GaAs tandem solar cells,” Appl. Phys. Lett.band impact ionization and solar cell efficiency,” J. Appl.

  13. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    InGaAs triple-junction solar cells grown inverted with abonded GaAs/InGaAs tandem solar cell,” Appl. Phys. Lett. 89,2 /GaAs tandem-junction solar cells,” Appl. Phys. Lett. 83,

  14. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01

    Cu(In,Ga)(Se,S)2 Solar Cells,” Advanced Energy Materials,processed CuInSxSe2?x solar cells and its effect on defectEnergy Materials and Solar Cells, vol. 95, no. 8, pp. 2384–

  15. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01

    3-6,3-7] Chalcopyrite CIGS solar cells, without introducingperformance CISS and CIGS solar cells with efficiencies uptellurium might impede CIGS/CdTe solar cells from reaching

  16. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    the intermediate band solar cell under nonideal space chargeInGaP/GaAs tandem solar cells,” Appl. Phys. Lett. 70, 381 (band impact ionization and solar cell efficiency,” J. Appl.

  17. Theoretical Study of Electron Transfer in Organic Solar Cells

    E-Print Network [OSTI]

    Reslan, Randa

    2015-01-01

    rate in symmetric organic solar cells exp where ! !" is theN. S. Sariciftci, Organic solar cells: An overview, JournalW. Warta, and E. D. Dunlop, Solar cell efficiency tables (

  18. Material Development for Highly Processable Thin Film Solar Cells

    E-Print Network [OSTI]

    Bob, Brion

    2014-01-01

    H. Sudibyo, and D. Hartanto, in Solar Cells - Research andon the Cu 2 (Zn,Sn)Se 4 solar cells open-circuit voltage. ”on the Cu 2 (Zn,Sn)Se 4 solar cells open-circuit voltage. ”

  19. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    efficiency of a specific solar cell design. Graph reproducedrequired for most solar cell designs (as a function of thewould make use of 3D solar cell designs such as micro- or

  20. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    materials. The multi-junction solar cell is an obviousmulti-junction cell was envisioned from the outset of solar cellthe solar cell intact (such as the dc, uc or multi- junction

  1. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    91, 43. T. Markvart, Solar cell as a heat engine: energy–Tiedje, Physical Limits to Solar Cell Efficiency, in EnergyThe Carnot Factor in Solar-Cell Theory. Solid State

  2. CRADA Final Report: Process development for hybrid solar cells

    E-Print Network [OSTI]

    Ager, Joel W

    2011-01-01

    development for hybrid solar cells Summary of the specific20 wafers with full tandem solar cell test structure perNitride/Silicon Tandem Solar Cell,” Appl. Phys. Express 2

  3. Engineering Dilute Nitride Semiconductor Alloys for Intermediate Band Solar Cells

    E-Print Network [OSTI]

    Luce, Alexander Vallejo

    2015-01-01

    Shockley-Queisser limit 2 Intermediate band solar cells 2.1for viable intermediate band solar cells . . . . 2.6for intermediate band solar cell. (a) Schematic band diagram

  4. Fullerene surfactants and their use in polymer solar cells

    DOE Patents [OSTI]

    Jen, Kwan-Yue; Yip, Hin-Lap; Li, Chang-Zhi

    2015-12-15

    Fullerene surfactant compounds useful as interfacial layer in polymer solar cells to enhance solar cell efficiency. Polymer solar cell including a fullerene surfactant-containing interfacial layer intermediate cathode and active layer.

  5. Theoretical Study of Electron Transfer in Organic Solar Cells

    E-Print Network [OSTI]

    Reslan, Randa

    2015-01-01

    rate in symmetric organic solar cells exp where ! !" is theN. S. Sariciftci, Organic solar cells: An overview, Journalfor the use of organic solar cells. First, the methano-

  6. Material Development for Highly Processable Thin Film Solar Cells

    E-Print Network [OSTI]

    Bob, Brion

    2014-01-01

    Structuring of Thin-film Solar Cells with a Single Laser1. Background on Thin Film Solar Cells and TransparentCuIn(Se,S)2 thin film solar cells: Secondary phases and

  7. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    the production cost, thin film solar cells with only a fewstate-of-the-art thin film solar cell design and processingintermediate band solar cell,” Thin Solid Films, 511-512,

  8. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01

    to High-Efficiency CZTSSe Thin-film Solar Cells, Proc. IEEEMetal chalcogenide-based thin film solar cells are currentlyof metal chalcogenide thin film solar cells A dissertation

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

    E-Print Network [OSTI]

    Reusswig, Philip David

    2014-01-01

    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 ...

  10. New Morphological Paradigm Uncovered in Organic Solar Cells

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

    may need to be refined to accommodate this newly discovered complexity. Improving Solar Cell Models Organic photovoltaics (OPVs), or solar cells, have the potential to...

  11. Nanocrystal solar cells processed from solution (Patent) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Nanocrystal solar cells processed from solution Citation Details In-Document Search Title: Nanocrystal solar cells processed from solution A photovoltaic device having a first...

  12. Advanced Materials and Nano Technology for Solar Cells

    E-Print Network [OSTI]

    Han, Tao

    2014-01-01

    price has been reduced by 3/4. 1.2.2 SOLAR CELL CLASSIFICATION Generally, solar cells achieve the Photovoltaic

  13. 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 Organic solar cells are made of thin layers of interpenetrating structures from two different conducting organic...

  14. 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...

  15. Understanding Collection-Related Losses in Organic Solar Cells...

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

    Understanding Collection-Related Losses in Organic Solar Cells Home > Research > ANSER Research Highlights > Understanding Collection-Related Losses in Organic Solar Cells...

  16. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    GaInP/GaAs/InGaAs triple-junction solar cells grown invertedS. Guha, “Triple-junction amorphous silicon alloy solar cell

  17. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01

    for further improvement on CZTS solar cells efficiency.improvement. Figure 6.1 Efficiency progress for hydrazine solution processing CIGS and CZTS thin film solar cells

  18. CRADA Final Report: Process development for hybrid solar cells

    E-Print Network [OSTI]

    Ager, Joel W

    2011-01-01

    the U.S. economy. The solar cell’s target market is the highmarket. By reaching their target efficiency of 30%, the hybrid tandem solar

  19. New Morphological Paradigm Uncovered in Organic Solar Cells

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

    newly discovered complexity. Improving Solar Cell Models Organic photovoltaics (OPVs), or solar cells, have the potential to provide a low-cost and renewable source of...

  20. Cascade solar cell having conductive interconnects

    DOE Patents [OSTI]

    Borden, Peter G. (Menlo Park, CA); Saxena, Ram R. (Saratoga, CA)

    1982-10-26

    Direct ohmic contact between the cells in an epitaxially grown cascade solar cell is obtained by means of conductive interconnects formed through grooves etched intermittently in the upper cell. The base of the upper cell is directly connected by the conductive interconnects to the emitter of the bottom cell. The conductive interconnects preferably terminate on a ledge formed in the base of the upper cell.

  1. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01

    printing,” Solar Energy Materials and Solar Cells, vol. 93,cells,” Solar Energy Materials and Solar Cells, vol. 95, no.CdTe Solar Cells,” in Solar Energy, no. February, R. D.

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

    E-Print Network [OSTI]

    Deceglie, Michael G.

    2014-01-01

    in ultrathin plasmonic solar cells," Optics Express, vol.Bailat, "Thin-film silicon solar cell technology," Progresstrapping in silicon thin film solar cells," Solar Energy,

  3. Heterojunction solar cell with passivated emitter surface

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO); Kurtz, Sarah R. (Golden, CO)

    1994-01-01

    A high-efficiency heterojunction solar cell 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.

  4. Solar cell with silicon oxynitride dielectric layer

    DOE Patents [OSTI]

    Shepherd, Michael; Smith, David D

    2015-04-28

    Solar cells with silicon oxynitride dielectric layers and methods of forming silicon oxynitride dielectric layers for solar cell fabrication are described. For example, an emitter region of a solar cell includes a portion of a substrate having a back surface opposite a light receiving surface. A silicon oxynitride (SiO.sub.xN.sub.y, 0

  5. Bypass diode for a solar cell

    DOE Patents [OSTI]

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

    2013-11-12

    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.

  6. Heterojunction solar cell with passivated emitter surface

    DOE Patents [OSTI]

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

    1994-05-31

    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.

  7. Processing-Dependent Growth Mechanisms and Performance Improvement of Kesterite Solar Cells

    E-Print Network [OSTI]

    Hsu, Wan-Ching

    2014-01-01

    and Performance Improvement of Kesterite Solar Cells Aand Performance Improvement of Kesterite Solar Cells by Wan-

  8. Colloidal cluster phases and solar cells 

    E-Print Network [OSTI]

    Mailer, Alastair George

    2012-11-28

    The arrangement of soft materials through solution processing techniques is a topic of profound importance for next generation solar cells; the resulting morphology has a major influence on construction, performance and ...

  9. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    by device optimization, ” Advanced Materials, 2010, 22(39),Optimization of ultra-thin light absorbing layer and transparent cathode architecture,” Advanced Energy Materials,optimization of diketopyrrolopyrrole?based narrow bandgap polymer solar cells‘‘, Advanced Materials,

  10. Rational design of hybrid organic solar cells

    E-Print Network [OSTI]

    Lentz, Levi (Levi Carl)

    2014-01-01

    In this thesis, we will present a novel design for a nano-structured organic-inorganic hybrid photovoltaic material that will address current challenges in bulk heterojunction (BHJ) organic-based solar cell materials. ...

  11. Biomimetic Dye Molecules for Solar Cells

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

    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...

  12. Texturization of multicrystalline silicon solar cells

    E-Print Network [OSTI]

    Li, Dai-Yin

    2010-01-01

    A significant efficiency gain for crystalline silicon solar cells can be achieved by surface texturization. This research was directed at developing a low-cost, high-throughput and reliable texturing method that can create ...

  13. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01

    in bipolar graphene p-n-p junctions. Phys Rev Lett. 2007;99(GL. A New Silicon P-N Junction Photocell for Convertingmechanisms in organic p/n-junction solar cells. Sol Energ

  14. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    Physical Limits to Solar Cell Efficiency, in Energy and theCarnot factor in solar-cell efficiencies. J. Phys. D: Appl.and A.J. Nozik, Solar conversion efficiency of photovoltaic

  15. Indium oxide/n-silicon heterojunction solar cells

    DOE Patents [OSTI]

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

    1982-12-28

    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%.

  16. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    11 th E. C. Photovoltaic Solar Energy Conference, Montreal,of analytical expressions for solar cell fill factors.Solar Cells 7, 31. A. Luque and V. Andreev, Concentrator

  17. Engineering Dilute Nitride Semiconductor Alloys for Intermediate Band Solar Cells

    E-Print Network [OSTI]

    Luce, Alexander Vallejo

    2015-01-01

    Shockley-Queisser limit 2 Intermediate band solar cells 2.1with a realistic solar spectrum . . . . . . . . . . . 2.3for viable intermediate band solar cells . . . . 2.6

  18. Questions I will answer What is a solar cell?

    E-Print Network [OSTI]

    McGehee, Michael

    cells are safe and have few non-desirable environmental impacts. ·Solar cells can replace coal, which can we print solar cells to bring the cost down? #12;Solar (photovoltaic generates lots of CO2. ·Solar cells provide electricity exactly when we need it the most. #12

  19. Microstructured surface design for omnidirectional antireflection coatings on solar cells

    E-Print Network [OSTI]

    Zhou, Weidong

    Microstructured surface design for omnidirectional antireflection coatings on solar cells Weidong to current crystalline silicon solar cells, as well as future thin film, quantum dot, and organic solar cells for light collection is vital in achieving high performance solar cells.1 An ideal antireflec- tion AR

  20. Radiative cooling of solar cells LINXIAO ZHU,1

    E-Print Network [OSTI]

    Fan, Shanhui

    Radiative cooling of solar cells LINXIAO ZHU,1 AASWATH RAMAN,2 KEN XINGZE WANG,1 MARC ABOU ANOMA,3. We introduce a general approach to radiatively lower the operating temperature of a solar cell for the radiative cooling of solar cells. For an example case of a bare crystalline silicon solar cell, we show

  1. [Type here] Copper Indium Selenide (CIS) Solar Cell

    E-Print Network [OSTI]

    Hochberg, Michael

    [Type here] Copper Indium Selenide (CIS) Solar Cell CIS cells are made with a thin layer of CuInSe2) Solar Cell CIGs cells are made with a thin layer of copper indium gallium diselenide Cu(In, Ga)Se2 (CIGS). CIGS cells have up to 10% efficiency with similar durability as silicon solar cells. Since

  2. Quantum Coaxial Cables for Solar Energy Harvesting

    SciTech Connect (OSTI)

    Zhang, Y.; Wang, L.-W.; Mascarenhas, A.

    2007-01-01

    Type II core-shell nanowires based on III-V and II-VI semiconductors are designed to provide the highly desirable but not readily available feature-efficient charge separation-and concurrently address the different material challenges specific for a few key renewable energy applications: including hydrogen generation via photoelectrochemical water splitting, dye-sensitized solar cells, and conventional solar cells. They also open up new avenues for studying novel physics and material sciences in reduced dimensionality of very unusual quasi-one-dimensional systems. A first-principles density function theory within the local density approximation (LDA) is used for the electronic structure calculation and a valence-force-field method for the structural relaxation, and empirical corrections to the LDA errors are applied.

  3. Limit of light coupling into solar cells

    E-Print Network [OSTI]

    Naqavi, A; Ballif, C; Scharf, T; Herzig, H P

    2013-01-01

    We introduce a limit for the strength of coupling light into the modes of solar cells. This limit depends on both a cell's thickness and its modal properties. For a cell with refractive index n and thickness d, we obtain a maximal coupling rate of 2c*sqrt(n^2-1)/d where c is speed of light. Our method can be used in the design of solar cells and in calculating their efficiency limits; besides, it can be applied to a broad variety of resonant phenomena and devices.

  4. Time-Domain ab Initio Study of Charge Relaxation and Recombination in Dye-Sensitized TiO2

    E-Print Network [OSTI]

    /bulk interface that are commonly encountered in molecular electronics, photovoltaics, and photoelectrochemistry understanding of these processes is crucial for improving solar cell design and optimizing photovoltaic current to these challenges, many researchers have focused on molecular/bulk interfacial ET because of the central role

  5. Plastic Schottky-barrier solar cells

    DOE Patents [OSTI]

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

    1981-12-30

    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.

  6. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01

    and screen printing,” Solar Energy Materials and SolarCdTe Solar Cells,” in Solar Energy, no. February, R. D.of CdTe solar cells,” Solar Energy Materials and Solar

  7. Method of fabricating a solar cell array

    DOE Patents [OSTI]

    Lazzery, Angelo G. (Oaklyn, NJ); Crouthamel, Marvin S. (Pennsauken, NJ); Coyle, Peter J. (Oaklyn, NJ)

    1982-01-01

    A first set of pre-tabbed solar cells are assembled in a predetermined array with at least part of each tab facing upward, each tab being fixed to a bonding pad on one cell and abutting a bonding pad on an adjacent cell. The cells are held in place with a first vacuum support. The array is then inverted onto a second vacuum support which holds the tabs firmly against the cell pads they abut. The cells are exposed to radiation to melt and reflow the solder pads for bonding the tab portions not already fixed to bonding pads to these pads.

  8. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, Aaron S. (Broomall, PA)

    1985-01-01

    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.

  9. Method of restoring degraded solar cells

    DOE Patents [OSTI]

    Staebler, David L. (Lawrenceville, NJ)

    1983-01-01

    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.

  10. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, A.S.

    1983-12-08

    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.

  11. Method of restoring degraded solar cells

    DOE Patents [OSTI]

    Staebler, D.L.

    1983-02-01

    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.

  12. EELE408 Photovoltaics Lecture 11: Solar Cell Parameters

    E-Print Network [OSTI]

    Kaiser, Todd J.

    1 EELE408 Photovoltaics Lecture 11: Solar Cell Parameters Dr. Todd J. Kaiser tjkaiser@ece.montana.edu Department of Electrical and Computer Engineering Montana State University - Bozeman Solar Cell Parameters circuit current is the current through the cell when the voltage across the cell is zero (the solar cell

  13. Investigating the efficiency of Silicon Solar cells at

    E-Print Network [OSTI]

    Attari, Shahzeen Z.

    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

  14. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    workings of solar cells and photovoltaic power conversion tostate-of-the-art photovoltaic cells. Prog. Photovolt: Res.efficiency of an ideal photovoltaic cell with charge carrier

  15. Folded-Light-Path Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    Folded-Light-Path Colloidal Quantum Dot Solar Cells Ghada I. Koleilat*, Illan J. Kramer*, Chris T-processed solar cells offer the promise of low cost, large-area processing, and, prospectively, high solar power solar cell performance20,21 . Results In the present work, we sought to increase the interaction

  16. NANO REVIEW Enhancing Solar Cell Efficiencies through 1-D Nanostructures

    E-Print Network [OSTI]

    Chen, Junhong

    energy is not occurring due to the high cost and inadequate efficiencies of existing solar cells of solar energy is the high cost and inadequate efficiencies of existing solar cells. InnovationsNANO REVIEW Enhancing Solar Cell Efficiencies through 1-D Nanostructures Kehan Yu Æ Junhong Chen

  17. November 21, 2000 PV Lesson Plan 1 Solar Cells

    E-Print Network [OSTI]

    Oregon, University of

    November 21, 2000 PV Lesson Plan 1 ­ Solar Cells Prepared for the Oregon Million Solar Roofs High School Gary Grace ­ South Eugene High School In Schools #12;1 Solar Cells Lesson Plan Content: In this lesson, students are introduced to the basic physics and chemistry behind the operation of a solar cell

  18. Light trapping in plasmonic solar cells Albert Polman

    E-Print Network [OSTI]

    Polman, Albert

    light management team #12;Light is poorly absorbed in a thin-film solar cell Solar spectrum absorbed Management #12;Light trapping in a thin-film solar cell Nature Mater. 9, 205 (2010) #12;Back contact thin-film solar cell Optimum = closest packed Experiments so far Pitch (nm) Wavelength(nm) Photocurrent

  19. California: TetraCell Silicon Solar Cell Improves Efficiency...

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

    used in traditional screen printed solar cells-with copper, which is much lower in cost and subject to less market-based price volatility. This technology also allows for...

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

    E-Print Network [OSTI]

    Woodall, Jerry M.

    2003-01-01

    Solar Energy Materials & Solar Cells 75 (2003) 307­312 Extreme radiation hardness and light-weighted thin-film indium phosphide solar cell and its computer simulation Guohua Lia, *, Qingfen Yanga+ -i-p+ InP solar cell is developed. The total thickness of its epitaxial layer is only 0.22 mm

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

    E-Print Network [OSTI]

    Anderson, Timothy J.

    2005-01-01

    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,Ã, C time to modify near- surface defects and related junction properties in Cu(In,Ga)Se2 (CIGS) solar cells

  2. Fabricating solar cells with silicon nanoparticles

    DOE Patents [OSTI]

    Loscutoff, Paul; Molesa, Steve; Kim, Taeseok

    2014-09-02

    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.

  3. Multi-junction solar cell device

    DOE Patents [OSTI]

    Friedman, Daniel J. (Lakewood, CO); Geisz, John F. (Wheat Ridge, CO)

    2007-12-18

    A multi-junction solar cell device (10) is provided. The multi-junction solar cell device (10) comprises either two or three active solar cells connected in series in a monolithic structure. The multi-junction device (10) comprises a bottom active cell (20) having a single-crystal silicon substrate base and an emitter layer (23). The multi-junction device (10) further comprises one or two subsequent active cells each having a base layer (32) and an emitter layer (23) with interconnecting tunnel junctions between each active cell. At least one layer that forms each of the top and middle active cells is composed of a single-crystal III-V semiconductor alloy that is substantially lattice-matched to the silicon substrate (22). The polarity of the active p-n junction cells is either p-on-n or n-on-p. The present invention further includes a method for substantially lattice matching single-crystal III-V semiconductor layers with the silicon substrate (22) by including boron and/or nitrogen in the chemical structure of these layers.

  4. Fundamental limit of nanophotonic light trapping in solar cells

    E-Print Network [OSTI]

    Fan, Shanhui

    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-generation solar cells. The ultimate success of photovoltaic (PV) cell technology requires great advancements

  5. Solar cell contact formation using laser ablation

    DOE Patents [OSTI]

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

    2015-07-21

    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.

  6. High throughput solar cell ablation system

    DOE Patents [OSTI]

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

    2014-10-14

    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.

  7. Solar cell contact formation using laser ablation

    DOE Patents [OSTI]

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

    2014-07-22

    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.

  8. High throughput solar cell ablation system

    DOE Patents [OSTI]

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

    2012-09-11

    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.

  9. Solar cell contact formation using laser ablation

    DOE Patents [OSTI]

    Harley, Gabriel; Smith, David; Cousins, Peter

    2012-12-04

    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.

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

    E-Print Network [OSTI]

    Armstrong, Paul Barber

    2010-01-01

    50% improvement in solar cell efficiency. The synthesis of asignificantly higher solar cell efficiencies relative tofor obtaining high efficiency solar cells. According to

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

    E-Print Network [OSTI]

    Ghosh, Somnath

    2012-01-01

    cavities to improve the solar cell efficiency. I have alsocould improve the solar cell efficiency. The second part isfor fabricating high-efficiency solar cell. Traditionally,

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

    E-Print Network [OSTI]

    Miller, Owen Dennis

    2012-01-01

    I The Physics of High-Efficiency Solar Cells 2 Luminescentint , on theoretical solar cell efficiency. The shortfall isjunction, flat-plate solar cell efficiency records over

  13. Ultrahigh Efficiency Multiband Solar Cells Final Report for Director's Innovation Initiative Project DII-2005-1221

    E-Print Network [OSTI]

    Ager III, Joel W.; Walukiewicz, W.; Yu, Kin Man

    2006-01-01

    Assessment of Multijunction Solar Cell Performance inS. Igari, and W. Warta, “Solar Cell Efficiency Tables (C. , “Assessment of Multijunction Solar Cell Performance in

  14. Device Physics and Recombination in Polymer:Fullerene Bulk-Heterojunction Solar Cells

    E-Print Network [OSTI]

    Hawks, Steven

    2015-01-01

    of Composition and Thickness Matched SqP and BC Solar Cells.tail recombination in polymer:fullerene organic solar cellsSolar Cell . . . . . . . . . . . . . . . . . . . . . . . . . .

  15. Device Physics and Recombination in Polymer:Fullerene Bulk-Heterojunction Solar Cells

    E-Print Network [OSTI]

    Hawks, Steven

    2015-01-01

    of Composition and Thickness Matched SqP and BC Solar Cells.Solar Cell . . . . . . . . . . . . . . . . . . . . . . . . . .tail recombination in polymer:fullerene organic solar cells

  16. Design of Nanostructured Solar Cells Using Coupled Optical and Electrical Modeling

    E-Print Network [OSTI]

    Deceglie, Michael G

    2014-01-01

    novel route toward optical solar cell design, in which lightDesign of Nanostructured Solar Cells Using Coupled Opticaland electrical design of light trapping in solar cells is

  17. Hybrid Solar Cells with Prescribed Nanoscale Morphologies Based on Hyperbranched Semiconductor Nanocrystals

    E-Print Network [OSTI]

    Gur, Ilan; Fromer, Neil A.; Chen, Chih-Ping; Kanaras, Antonios G.; Alivisatos, A. Paul

    2006-01-01

    polymer bulk heterojunction solar cells. Journal of PhysicalS. & Meissner, D. Hybrid solar cells based on nanoparticlesmodelling of organic solar cells: The dependence of internal

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

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01

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

  19. Theory of Current Transients in Planar Semiconductor Devices: Insights and Applications to Organic Solar Cells

    E-Print Network [OSTI]

    Hawks, SA; Finck, BY; Schwartz, BJ

    2015-01-01

    polymer:fullerene organic solar cells, J. Appl. Phys. 116,recombination in organic solar cells, Prog. Polym. Sci. 38,transients from organic solar cells, Appl. Phys. Lett. 103,

  20. Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics

    E-Print Network [OSTI]

    Chung, Choong-Heui

    2012-01-01

    CuIn(Se,S) 2 thin film solar cells: secondary phaseChalcopyrite Thin Film Solar Cells: Materials Chemistry,Chalcopyrite Thin Film Solar Cells: Materials Chemistry,

  1. Catching some rays: Organic solar cells make a leap forward ...

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

    resources Primer on solar power Solar Car Lesson Plan Catching some rays: Organic solar cells make a leap forward By Jared Sagoff * June 13, 2012 Tweet EmailPrint Drawn together by...

  2. Advanced Materials and Nano Technology for Solar Cells

    E-Print Network [OSTI]

    Han, Tao

    2014-01-01

    http://rredc.nrel.gov/solar/spectra/am1.5/ASTMG173/ASTMG173.CdTe and CIGS thin-film solar cells: highlights and4.57) Eduardo Lorenzo (1994). Solar Electricity: Engineering

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

    E-Print Network [OSTI]

    Leow, Shin Woei

    2014-01-01

    S. Lewis, “Toward Cost-Effective Solar Energy Use,” Science,D. S. Ginley, “Low-Cost Inorganic Solar Cells: From Ink Toto lowering the cost of solar electricity production with

  4. Plastic Schottky barrier solar cells

    DOE Patents [OSTI]

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

    1984-01-24

    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.

  5. Deng & Schiff, Amorphous Silicon Based Solar Cells rev. 7/30/2002, Page 1 Amorphous Silicon Based Solar Cells

    E-Print Network [OSTI]

    Deng, Xunming

    pin Photodiodes 6 Substrate and Superstrate Designs 7 Multijunction Solar Cells 8 1.3 Staebler IV Measurement 46 Quantum Efficiency Measurements in Multijunction Cells 46 Matching Component Cells in Multijunction Designs 47 High efficiency multiple-junction solar cells 48 5.4 Microcrystalline Silicon Solar

  6. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01

    printing,” Solar Energy Materials and Solar Cells, vol. 93,cells,” Solar Energy Materials and Solar Cells, vol. 95, no.55] B. McConnell, “Solar Energy: This Is What a Disruptive

  7. "Building the Dye-Sensitized Solar Fuel Device" Conference | U.S. DOE

    Office of Science (SC) Website

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thIWalter H. Zinn, 1969 The EnricoOffice of Science (SC)

  8. Flexible plastic solar cells offer great advantages when compared with

    E-Print Network [OSTI]

    Langendoen, Koen

    Flexible plastic solar cells offer great advantages when compared with traditional silicon solar for a solar cell: extremely easy to produce, very cheap and with good perspectives for high efficiencies. Since ten years considerable progress has been made in developing new and very promising types of solar

  9. Solar Cells | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc JumpHeter Battery TechnologySocovoltaic Systems JumpSolanaInc Jump to:Solar

  10. Tandem junction amorphous silicon solar cells

    DOE Patents [OSTI]

    Hanak, Joseph J. (Lawrenceville, NJ)

    1981-01-01

    An amorphous silicon solar cell has an active body with two or a series of layers of hydrogenated amorphous silicon arranged in a tandem stacked configuration with one optical path and electrically interconnected by a tunnel junction. The layers of hydrogenated amorphous silicon arranged in tandem configuration can have the same bandgap or differing bandgaps.

  11. Metal electrode for amorphous silicon solar cells

    DOE Patents [OSTI]

    Williams, Richard (Princeton, NJ)

    1983-01-01

    An amorphous silicon solar cell having an N-type region wherein the contact to the N-type region is composed of a material having a work function of about 3.7 electron volts or less. Suitable materials include strontium, barium and magnesium and rare earth metals such as gadolinium and yttrium.

  12. Method of fabricating a solar cell

    DOE Patents [OSTI]

    Pass, Thomas; Rogers, Robert

    2014-02-25

    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.

  13. Photovoltaic nanocrystal scintillators hybridized on Si solar cells

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Photovoltaic nanocrystal scintillators hybridized on Si solar cells for enhanced conversion on solar cells to enhance photovoltaic device parameters including spectral responsivity, open circuit@bilkent.edu.tr Abstract: We propose and demonstrate semiconductor nanocrystal based photovoltaic scintillators integrated

  14. High temperature investigations of crystalline silicon solar cell materials

    E-Print Network [OSTI]

    Hudelson, George David Stephen, III

    2009-01-01

    Crystalline silicon solar cells are a promising candidate to provide a sustainable, clean energy source for the future. In order to bring about widespread adoption of solar cells, much work is needed to reduce their cost. ...

  15. SOLAR CELLS Low trap-state density and long

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    REPORTS SOLAR CELLS Low trap-state density and long carrier diffusion in organolead trihalide) perovskite solar cells (PSCs) have now achieved 20.1% certified power con- version efficiencies (1

  16. Ohmic contacts for solar cells by arc plasma spraying

    DOE Patents [OSTI]

    Narasimhan, Mandayam C. (Seekonk, MA); Roessler, Barton (Barrington, RI); Loferski, Joseph J. (Providence, RI)

    1982-01-01

    The method of applying ohmic contacts to a semiconductor, such as a silicon body or wafer used in solar cells, by the use of arc plasma spraying, and solar cells resulting therefrom.

  17. Harmful Shunting Mechanisms Found in Silicon Solar Cells (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-05-01

    Scientists developed near-field optical microscopy for imaging electrical breakdown in solar cells and identified critical electrical breakdown mechanisms operating in industrial silicon and epitaxial silicon solar cells.

  18. Minding the Gap Makes for More Efficient Solar Cells

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

    Minding the Gap Makes for More Efficient Solar Cells Minding the Gap Makes for More Efficient Solar Cells Print Thursday, 19 December 2013 11:01 Using novel materials to develop...

  19. SUPPORTING INFORMATION Si Microwire Solar Cells: Improved Efficiency with a

    E-Print Network [OSTI]

    S1 SUPPORTING INFORMATION Si Microwire Solar Cells: Improved Efficiency with a Conformal SiO2 Layer improvements (%) of Si microwire solar cells (6 µµµµm height) after conformal SiO2 coating SiO2 thickness Jsc

  20. Interface and composition analysis on perovskite solar cells

    E-Print Network [OSTI]

    Matteocci, Fabio; Busby, Yan; Pireaux, Jean-Jaques; Divitini, Giorgio; Cacovich, Stefania; Ducati, Caterina; di Carlo, Aldo

    2015-11-02

    Organometal halide (hybrid) perovskite solar cells have been fabricated following four different deposition procedures and investigated in order to find correlations between the solar cell characteristics/performance and their structure...

  1. CRADA Final Report: Process development for hybrid solar cells

    E-Print Network [OSTI]

    Ager, Joel W

    2011-01-01

    global market. By reaching their target efficiency of 30%, the hybrid tandem solar cells have the potential

  2. Nanocluster production for solar cell applications

    SciTech Connect (OSTI)

    Al Dosari, Haila M.; Ayesh, Ahmad I.

    2013-08-07

    This research focuses on the fabrication and characterization of silver (Ag) and silicon (Si) nanoclusters that might be used for solar cell applications. Silver and silicon nanoclusters have been synthesized by means of dc magnetron sputtering and inert gas condensation inside an ultra-high vacuum compatible system. We have found that nanocluster size distributions can be tuned by various source parameters, such as the sputtering discharge power, flow rate of argon inert gas, and aggregation length. Quadrupole mass filter and transmission electron microscopy were used to evaluate the size distribution of Ag and Si nanoclusters. Ag nanoclusters with average size in the range of 3.6–8.3 nm were synthesized (herein size refers to the nanocluster diameter), whereas Si nanoclusters' average size was controlled to range between 2.9 and 7.4 nm by controlling the source parameters. This work illustrates the ability of controlling the Si and Ag nanoclusters' sizes by proper optimization of the operation conditions. By controlling nanoclusters' sizes, one can alter their surface properties to suit the need to enhance solar cell efficiency. Herein, Ag nanoclusters were deposited on commercial polycrystalline solar cells. Short circuit current (I{sub SC}), open circuit voltage (V{sub OC}), fill factor, and efficiency (?) were obtained under light source with an intensity of 30 mW/cm{sup 2}. A 22.7% enhancement in solar cell efficiency could be measured after deposition of Ag nanoclusters, which demonstrates that Ag nanoclusters generated in this work are useful to enhance solar cell efficiency.

  3. WORKING QUANTUM EFFICIENCY OF CDTE SOLAR CELL Zimeng Cheng

    E-Print Network [OSTI]

    WORKING QUANTUM EFFICIENCY OF CDTE SOLAR CELL Zimeng Cheng 1 , Kwok Lo 2 , Jingong Pan 1 , Dongguo, the quantum efficiency of CdTe solar cell with various optical biases, which is titled as "Working Quantum Efficiency (WQE)", is measured. The result is compared with industrialized amorphous silicon solar cell

  4. EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques

    E-Print Network [OSTI]

    Kaiser, Todd J.

    1 EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques Dr. Todd J. Kaiser - Bozeman Screen Printed Solar Cells · Starting wafer is about 0.5 mm thick and 10 x 10 cm2. The wafer is p-type and lightly doped with Boron (1016/cm3) 2 Screen Printed Solar Cells · Saw Damage Etch ­ The starting wafer

  5. EELE408 Photovoltaics Lecture 13: Solar Cell Design I

    E-Print Network [OSTI]

    Kaiser, Todd J.

    · Commercial cost of manufacture · Research highest efficiency w/o regard to expense 2 Si Solar Cell Efficiency1 EELE408 Photovoltaics Lecture 13: Solar Cell Design I Dr. Todd J. Kaiser tjkaiser@ece.montana.edu Department of Electrical and Computer Engineering Montana State University - Bozeman Solar Cell Design

  6. Plasmonic solar cells K.R. Catchpole,1,2*

    E-Print Network [OSTI]

    Polman, Albert

    Plasmonic solar cells K.R. Catchpole,1,2* and A. Polman,1 1 FOM Institute for Atomic and Molecular of increasing the light absorption in thin-film solar cells. Enhancements in photocurrent have been observed for a wide range of semiconductors and solar cell configurations. We review experimental and theoretical

  7. Solar Cells in 2009 and Beyond Mike McGehee

    E-Print Network [OSTI]

    McGehee, Michael

    Solar Cells in 2009 and Beyond Mike McGehee Materials Science and Engineering These slides parity cost depends on location #12;Conventional p-n junction photovoltaic (solar) cell #12;Efficiency (NREL) #12;Multicrystalline silicon solar cells: today's most popular technology 15-18 % efficiency $500

  8. MORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL

    E-Print Network [OSTI]

    Alam, Muhammad A.

    MORPHOLOGY 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 a relatively inexpensive option for the future solar cell technology, provided its efficiency increases beyond

  9. INTERNAL QUANTUM EFFICIENCY OF BACK ILLUMINATED n+ pp+ SOLAR CELLS

    E-Print Network [OSTI]

    del Alamo, Jesús A.

    629 INTERNAL QUANTUM EFFICIENCY OF BACK ILLUMINATED n+ pp+ SOLAR CELLS A. LUQUE, J. EGUREN and J+ layer of the back illuminated n+ pp+ solar cells has been carried out, and compared, 1 1. Introduction. - High intensity silicon solar cells, illuminated on the surface opposite

  10. Hybrid Silicon Nanocone-Polymer Solar Cells Sangmoo Jeong,

    E-Print Network [OSTI]

    Fan, Shanhui

    ABSTRACT: Recently, hybrid Si/organic solar cells have been studied for low-cost Si photovoltaic devices solar cell. Additionally, about 26% of the module cost comes from the fabrication processes of a SiHybrid Silicon Nanocone-Polymer Solar Cells Sangmoo Jeong, Erik C. Garnett, Shuang Wang, Zongfu Yu

  11. EE Times: Semi News Groups claim breakthroughs in solar cells

    E-Print Network [OSTI]

    Rogers, John A.

    -based, multi-junction solar cells. Module cost is minimized by using high concentration ratio. XEE Times: Semi News Groups claim breakthroughs in solar cells Mark LaPedus Page 1 of 2 EE Times (05 separately claimed breakthroughs in solar cell production. Gallium arsenide (GaAs) and related compounds

  12. Dielectric nanostructures for broadband light trapping in organic solar cells

    E-Print Network [OSTI]

    Fan, Shanhui

    Dielectric nanostructures for broadband light trapping in organic solar cells Aaswath Raman, Zongfu@stanford.edu Abstract: Organic bulk heterojunction solar cells are a promising candidate for low-cost next lying on top of the organic solar cell stack produce a 8-15% increase in photocurrent for a model

  13. Solar cell efficiency enhancement via light trapping in printable resonant

    E-Print Network [OSTI]

    Grandidier, Jonathan

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

  14. Recombination in compensated crystalline silicon for solar cells Daniel Macdonalda)

    E-Print Network [OSTI]

    in an improved short-circuit current, open-circuit voltage, and solar cell efficiency. VC 2011 American InstituteRecombination in compensated crystalline silicon for solar cells Daniel Macdonalda) and Andre. Accordingly, several research groups have dem- onstrated solar cell performance on compensated material

  15. Flexible thermal cycle test equipment for concentrator solar cells

    DOE Patents [OSTI]

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

    2012-06-19

    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.

  16. Small Molecule Solution-Processed Bulk Heterojunction Solar Cells

    E-Print Network [OSTI]

    Candea, George

    Small Molecule Solution-Processed Bulk Heterojunction Solar Cells Arthur Aebersold Supervisors: J in solution processed BHJ solar cells, which are made from a PCBM Squaraine DyeCyanine Dye Absorber Molecules solar cell performance show a trend for better devices with an intemediate active layer thickness

  17. Simulations of solar cell absorption enhancement using resonant modes

    E-Print Network [OSTI]

    Grandidier, Jonathan

    for enhancing the absorption of thin-film amorphous silicon solar cells using periodic arrangements of resonant,7 Dielectric nanospheres are promising structures for light trapping in planar, thin-film solar cells. It has a thin-film a-Si solar cell structure featuring back reflector and optimized anti-reflection coating. We

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

    E-Print Network [OSTI]

    Miller, Owen Dennis

    2012-01-01

    method to a new solar cell design: a thin-film solar cell incharacterize and design next-generation solar cells. Chapterlies with optical design: The solar cell must be designed

  19. Method of fabricating a solar cell with a tunnel dielectric layer

    DOE Patents [OSTI]

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

    2015-08-18

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

  20. Method of fabricating a solar cell with a tunnel dielectric layer

    DOE Patents [OSTI]

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

    2012-12-18

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

  1. Method of fabricating a solar cell with a tunnel dielectric layer

    DOE Patents [OSTI]

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

    2014-04-29

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

  2. Ultrahigh Efficiency Multiband Solar Cells Final Report for Director's Innovation Initiative Project DII-2005-1221

    E-Print Network [OSTI]

    Ager III, Joel W.; Walukiewicz, W.; Yu, Kin Man

    2006-01-01

    resistant than multijunction cells for this reason, althoughsolar cells. Like a multijunction cell, multiband solarAssessment of Multijunction Solar Cell Performance in

  3. Highly efficient light management for perovskite solar cells

    E-Print Network [OSTI]

    Wang, Dong-Lin; Hou, Guo-Jiao; Zhu, Zhen-Gang; Yan, Qing-Bo; Su, Gang

    2015-01-01

    Organic-inorganic halide perovskite solar cells have enormous potential to impact the existing photovoltaic industry. As realizing a higher conversion efficiency of the solar cell is still the most crucial task, a great number of schemes were proposed to minimize the carrier loss by optimizing the electrical properties of the perovskite solar cells. Here, we focus on another significant aspect that is to minimize the light loss by optimizing the light management to gain a high efficiency for perovskite solar cells. In our scheme, the slotted and inverted prism structured SiO2 layers are adopted to trap more light into the solar cells, and a better transparent conducting oxide layer is employed to reduce the parasitic absorption. For such an implementation, the efficiency and the serviceable angle of the perovskite solar cell can be promoted impressively. This proposal would shed new light on developing the high-performance perovskite solar cells.

  4. Compensated amorphous-silicon solar cell

    DOE Patents [OSTI]

    Devaud, G.

    1982-06-21

    An amorphous silicon solar cell including an electrically conductive substrate, a layer of glow discharge deposited hydrogenated amorphous silicon having regions of differing conductivity with at least one region of intrinsic hydrogenated amorphous silicon. The layer of hydrogenated amorphous silicon has opposed first and second major surfaces where the first major surface contacts the elecrically conductive substrate and an electrode for electrically contacting the second major surface. The intrinsic hydrogenated amorphous silicon region is deposited in a glow discharge with an atmosphere which includes not less than about 0.02 atom percent mono-atomic boron. An improved N.I.P. solar cell is disclosed using a BF/sub 3/ doped intrinsic layer.

  5. Theory of Current Transients in Planar Semiconductor Devices: Insights and Applications to Organic Solar Cells

    E-Print Network [OSTI]

    Hawks, SA; Finck, BY; Schwartz, BJ

    2015-01-01

    Dyakonov, Organic solar cell efficiencies under the aspectfor low-cost, high-efficiency solar cells, J. Phys. Chem.dependent efficiencies of organic bulk heterojunction solar

  6. Device Physics and Recombination in Polymer:Fullerene Bulk-Heterojunction Solar Cells

    E-Print Network [OSTI]

    Hawks, Steven

    2015-01-01

    Solar Cell . . . . . . . . . . . . . . . . . . . . . . . . . .tail recombination in polymer:fullerene organic solar cellsof Composition and Thickness Matched SqP and BC Solar Cells.

  7. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01

    for the improvement of CdTe solar cells,” Solar Energyimprovement over the past few years. 1.3 Nanotechnology and Solar Cells

  8. Device Physics and Recombination in Polymer:Fullerene Bulk-Heterojunction Solar Cells

    E-Print Network [OSTI]

    Hawks, Steven

    2015-01-01

    tail recombination in polymer:fullerene organic solar cellsin an Ef?cient Polymer:Fullerene Organic Solar CellOrganic Solar Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

    E-Print Network [OSTI]

    Ghosh, Somnath

    2012-01-01

    thin-film solar cellsthin film technology. Thin film solar cells use an averagethinner than the c-Si. Thin film solar cell can be deposited

  10. Structural Integration of Silicon Solar Cells and Lithium-ion Batteries Using Printed Electronics

    E-Print Network [OSTI]

    Kang, Jin Sung

    2012-01-01

    demonstration,” Solar Energy Materials and Solar Cells, vol.spectroscopy,” Solar energy materials and solar cells, vol.materials[2]. Multifunctional composite structure can be applied onto building windows to harvest solar energy

  11. Back-contacted back-junction silicon solar cells

    E-Print Network [OSTI]

    Johansen, Tom Henning

    electricity from BC-BJ silicon solar cells cost-competitive with electBack-contacted back-junction silicon solar cells Krister Mangersnes THESIS submitted in partial nearly four years as a Ph.D. student at the Institute for Energy Technology (IFE), Department of Solar

  12. Questions I will answer What is a solar cell?

    E-Print Network [OSTI]

    McGehee, Michael

    grid 4 #12;5 #12;Solar panels on the Interna9onal Space Sta9on 6 #12;Area power plants #12;National Renewable Energy Laboratory Innovation for Our Energy Future Original#12;Questions I will answer · What is a solar cell? · How are solar cells

  13. Defect behavior of polycrystalline solar cell silicon

    SciTech Connect (OSTI)

    Schroder, D.K.; Park, S.H.; Hwang, I.G.; Mohr, J.B.; Hanly, M.P.

    1993-05-01

    The major objective of this study, conducted from October 1988 to September 1991, was to gain an understanding of the behavior of impurities in polycrystalline silicon and the influence of these impurities on solar cell efficiency. The authors studied edge-defined film-fed growth (EFG) and cast poly-Si materials and solar cells. With EFG Si they concentrated on chromium-doped materials and cells to determine the role of Cr on solar cell performance. Cast poly-Si samples were not deliberately contaminated. Samples were characterized by cell efficiency, current-voltage, deep-level transient spectroscopy (DLTS), surface photovoltage (SPV), open-circuit voltage decay, secondary ion mass spectrometry, and Fourier transform infrared spectroscopy measurements. They find that Cr forms Cr-B pairs with boron at room temperature and these pairs dissociate into Cr{sub i}{sup +} and B{sup {minus}} during anneals at 210{degrees}C for 10 min. Following the anneal, Cr-B pairs reform at room temperature with a time constant of 230 h. Chromium forms CrSi{sub 2} precipitates in heavily contaminated regions and they find evidence of CrSi{sub 2} gettering, but a lack of chromium segregation or precipitation to grain boundaries and dislocations. Cr-B pairs have well defined DLTS peaks. However, DLTS spectra of other defects are not well defined, giving broad peaks indicative of defects with a range of energy levels in the band gap. In some high-stress, low-efficiency cast poly-Si they detect SiC precipitates, but not in low-stress, high-efficiency samples. SPV measurements result in nonlinear SPV curves in some materials that are likely due to varying optical absorption coefficients due to locally varying stress in the material.

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

    E-Print Network [OSTI]

    Huang, Jianqiao

    2012-01-01

    Solar Energy Materials and Solar Cells, 86:207–216, 2005. [silicon thin films and solar cells. Journal of Appliedtrapping in nanostructured solar cells. ACS Nano, 5:10055–

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

    E-Print Network [OSTI]

    Huang, Jianqiao

    2012-01-01

    Solar Energy Materials and Solar Cells, 86:207–216, 2005. [silicon thin films and solar cells. Journal of Appliedof a p-i-n thin-film solar cell with front transparent con-

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

    E-Print Network [OSTI]

    Huang, Jianqiao

    2012-01-01

    microcrystalline silicon thin films and solar cells. Journalof a p-i-n thin-film solar cell with front transparent con-microcrystalline silicon thin film solar cells. Solar Energy

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

    E-Print Network [OSTI]

    Deceglie, Michael G.

    2014-01-01

    trapping in silicon thin film solar cells," Solar Energy,textured surfaces in thin-film solar cells," Opt. Express,Design of Plasmonic Thin-Film Solar Cells with Broadband

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

    E-Print Network [OSTI]

    Iglesia, Enrique

    ­2077). Given the proposed scales of PV adoption, the health and environmental impacts of PV technology shouldGreen 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 create

  19. Solar module having reflector between cells

    DOE Patents [OSTI]

    Kardauskas, Michael J. (Billerica, MA)

    1999-01-01

    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.

  20. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01

    efficiency of solar panels and power to weight ratio insolar cells, there exist two basic processes to convert sunlight power topower to a load connected when charged by Sun. The typical output voltage of a silicon based solar

  1. June 2009 UWMREPORT 15 solar cells turn Bolton roof

    E-Print Network [OSTI]

    Saldin, Dilano

    June 2009 · UWMREPORT · 15 solar cells turn Bolton roof into an energy lab By Laura L. Hunt hanks are behind the acquisition of 74 solar panels that were recently installed on the second-floor roof of Bolton

  2. Evaluation of concentration solar cells for terrestrial applications

    E-Print Network [OSTI]

    An, Tao, M. Eng. Massachusetts Institute of Technology

    2008-01-01

    Solar energy has become a hot prospect for the future replacement of fossil fuels, which have limited reserves and cause environmental problems. Solar cell is such a device to directly generate electricity from this clean ...

  3. ORNL researchers make strides toward a copper oxide solar cell...

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

    researchers make strides toward a copper oxide solar cell (hi-res image) Amit Goyal and his team of research scientists are using copper oxide to redesign the face of solar power....

  4. TRANSPARENT COATINGS FOR SOLAR CELLS RESEARCH

    SciTech Connect (OSTI)

    Glatkowski, P.J.; Landis, D.A.

    2013-04-16

    Todays solar cells are fabricated using metal oxide based transparent conductive coatings (TCC) or metal wires with optoelectronic performance exceeding that currently possible with Carbon Nanotube (CNT) based TCCs. The motivation for replacing current TCC is their inherent brittleness, high deposition cost, and high deposition temperatures; leading to reduced performance on thin substrates. With improved processing, application and characterization techniques Nanofiber and/or CNT based TCCs can overcome these shortcomings while offering the ability to be applied in atmospheric conditions using low cost coating processes At todays level of development, CNT based TCC are nearing commercial use in touch screens, some types of information displays (i.e. electronic paper), and certain military applications. However, the resistivity and transparency requirements for use in current commercial solar cells are more stringent than in many of these applications. Therefore, significant research on fundamental nanotube composition, dispersion and deposition are required to reach the required performance commanded by photovoltaic devices. The objective of this project was to research and develop transparent conductive coatings based on novel nanomaterial composite coatings, which comprise nanotubes, nanofibers, and other nanostructured materials along with binder materials. One objective was to show that these new nanomaterials perform at an electrical resistivity and optical transparency suitable for use in solar cells and other energy-related applications. A second objective was to generate new structures and chemistries with improved resistivity and transparency performance. The materials also included the binders and surface treatments that facilitate the utility of the electrically conductive portion of these composites in solar photovoltaic devices. Performance enhancement venues included: CNT purification and metallic tube separation techniques, chemical doping, CNT patterning and alignment, advances in commercial and research materials and field effect schemes. In addition, Eikos continued to develop improved efficiency coating materials and transfer methods suitable for batch and continuous roll-to-roll fabrication requirements. Finally, Eikos collaborated with NREL and the PV-community at large in fabricating and characterizing Invisicon���® enabled solar cells.

  5. High efficiency, radiation-hard solar cells

    SciTech Connect (OSTI)

    Ager III, J.W.; Walukiewicz, W.

    2004-10-22

    The direct gap of the In{sub 1-x}Ga{sub x}N alloy system extends continuously from InN (0.7 eV, in the near IR) to GaN (3.4 eV, in the mid-ultraviolet). This opens the intriguing possibility of using this single ternary alloy system in single or multi-junction (MJ) solar cells of the type used for space-based surveillance satellites. To evaluate the suitability of In{sub 1-x}Ga{sub x}N as a material for space applications, high quality thin films were grown with molecular beam epitaxy and extensive damage testing with electron, proton, and alpha particle radiation was performed. Using the room temperature photoluminescence intensity as a indirect measure of minority carrier lifetime, it is shown that In{sub 1-x}Ga{sub x}N retains its optoelectronic properties at radiation damage doses at least 2 orders of magnitude higher than the damage thresholds of the materials (GaAs and GaInP) currently used in high efficiency MJ cells. This indicates that the In{sub 1-x}Ga{sub x}N is well-suited for the future development of ultra radiation-hard optoelectronics. Critical issues affecting development of solar cells using this material system were addressed. The presence of an electron-rich surface layer in InN and In{sub 1-x}Ga{sub x}N (0 < x < 0.63) was investigated; it was shown that this is a less significant effect at large x. Evidence of p-type activity below the surface in Mg-doped InN was obtained; this is a significant step toward achieving photovoltaic action and, ultimately, a solar cell using this material.

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

    E-Print Network [OSTI]

    Nabben, Reinhard

    2002-01-01

    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

  7. TJ Solar Cell (GaInP/GaAs/Ge Ultrahigh-Efficiency Solar Cells

    SciTech Connect (OSTI)

    Friedman, Daniel

    2002-04-17

    This talk will discuss recent developments in III-V multijunction photovoltaic technology which have led to the highest-efficiency solar cells ever demonstrated. The relationship between the materials science of III-V semiconductors and the achievement of record solar cell efficiencies will be emphasized. For instance, epitaxially-grown GAInP has been found to form a spontaneously-ordered GaP/InP (111) superlattice. This ordering affects the band gap of the material, which in turn affects the design of solar cells which incorporate GaInP. For the next generation of ultrahigh-efficiency III-V solar cells, we need a new semiconductor which is lattice-matched to GaAs, has a band gap of 1 eV, and has long minority-carrier diffusion lengths. Out of a number of candidate materials, the recently-discovered alloy GaInNAs appears to have the greatest promise. This material satisfies the first two criteria, but has to date shown very low diffusion lengths, a problem which is our current focus in the development of these next-generation cells.

  8. Solar Cell Nanotechnology Final Technical Report

    SciTech Connect (OSTI)

    Das, Biswajit

    2014-05-07

    The objective of this project is to develop a low cost nonlithographic nanofabrication technology for the fabrication of thin film porous templates as well as uniform arrays of semiconductor nanostructures for the implementation of high efficiency solar cells. Solar cells based on semiconductor nanostructures are expected to have very high energy conversion efficiencies due to the increased absorption coefficients of semiconductor nanostructures. In addition, the thin film porous template can be used for optimum surface texturing of solar cells leading to additional enhancement in energy conversion efficiency. An important requirement for these applications is the ability to synthesize nanostructure arrays of different dimensions with good size control. This project employed nanoporous alumina templates created by the anodization of aluminum thin films deposited on glass substrates for the fabrication of the nanostructures and optimized the process parameters to obtain uniform pore diameters. An additional requirement is uniformity or regularity of the nanostructure arrays. While constant current anodization was observed to provide controlled pore diameters, constant voltage anodization was needed for regularity of the nanostructure arrays. Thus a two-step anodization process was investigated and developed in this project for improving the pore size distribution and pore periodicity of the nanoporous alumina templates. CdTe was selected to be the active material for the nanowires, and the process for the successful synthesis of CdTe nanowires was developed in this project. Two different synthesis approaches were investigated in this project, electrochemical and electrophoretic deposition. While electrochemical synthesis was successfully employed for the synthesis of nanowires inside the pores of the alumina templates, the technique was determined to be non-optimum due to the need of elevated temperature that is detrimental to the structural integrity of the nanoporous alumina templates. In order to eliminate this problem, electrophoretic deposition was selected as the more appropriate technique, which involves the guided deposition of semiconductor nanoparticles in the presence of ultrasonic energy to form the crystalline nanowires. Extensive experimental research was carried out to optimize the process parameters for formation of crystalline nanowires. It was observed that the environmental bath temperature plays a critical role in determining the structural integrity of the nanowires and hence their lengths. Investigation was carried out for the formation of semitransparent ohmic contacts on the nanowires to facilitate photocurrent spectroscopy measurements as well as for solar cell implementation. Formation of such ohmic contacts was found to be challenging and a process involving mechanical and electrochemical polishing was developed to facilitate such contacts. The use of nanoporous alumina templates for the surface texturing of mono- and multi-crystalline solar cells was extensively investigated by electrochemical etching of the silicon through the pores of the nanoporous templates. The processes for template formation as well as etching were optimized and the alumina/silicon interface was investigated using capacitance-voltage characterization. The process developed was found to be viable for improving solar cell performance.

  9. Depleted-Heterojunction Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    -processed single-junction cells and also multijunction architectures. Size-effect tuning also en- ables the useDepleted-Heterojunction Colloidal Quantum Dot Solar Cells Andras G. Pattantyus-Abraham,, Illan J requires thick, high-purity solar cells with correspondingly long carrier transport lengths;3 organic

  10. Solar Cells in 2009 and Beyond Mike McGehee

    E-Print Network [OSTI]

    McGehee, Michael

    parity cost depends on location #12;Conventional p-n junction photovoltaic (solar) cell #12;Efficiency Increasing VOC and decreasing JSC #12;Triple-junction cells Appl. Phys. Lett. 90, 183516 (2007) EmcoreSolar Cells in 2009 and Beyond Mike McGehee Materials Science and Engineering These slides

  11. Surface Magnetism: Relativistic Effects at Semiconductor Interfaces and Solar Cells

    E-Print Network [OSTI]

    Schmidt, Wolf Gero

    excellently into the energy level scheme of this kind of solar cell and has the potential to replace with high potential for a further devel- opment. The global market for photovoltaics cells is expectedSurface Magnetism: Relativistic Effects at Semiconductor Interfaces and Solar Cells U. Gerstmann, M

  12. Solare Cell Roof Tile And Method Of Forming Same

    DOE Patents [OSTI]

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

    1999-11-16

    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.

  13. Valuing the Time-Varying Electricity Production of Solar Photovoltaic Cells

    E-Print Network [OSTI]

    Borenstein, Severin

    2005-01-01

    Production of Solar Photovoltaic Cells Severin BorensteinProduction of Solar Photovoltaic Cells Severin Borenstein 1concerns is so- lar photovoltaic cells (PVs), which capture

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

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01

    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.

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

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01

    cells are also called thin-film solar cells, which currently10-12% [6]. Thin film solar cells are significantly cheaper,and lightweight, thin film solar cells can be rolled out

  16. Method of fabricating bifacial tandem solar cells

    DOE Patents [OSTI]

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

    2014-10-07

    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.

  17. Biomimetic Dye Molecules for Solar Cells

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura|BilayerBiomimetic Dye Molecules for Solar Cells

  18. Biomimetic Dye Molecules for Solar Cells

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits & InspectionsBerylliumBiomimetic Dye Molecules for Solar Cells

  19. Nonadiabatic Molecular Dynamics Simulation of Light-Induced Electron Transfer from an Anchored Molecular Electron Donor to a Semiconductor Acceptor

    E-Print Network [OSTI]

    is typical of the dye sensitized semiconductor nanomaterials used in solar cell, photocatalysis important applications including photocatalysis, photoelectroly- sis, solar cells, waste processing

  20. New Morphological Paradigm Uncovered in Organic Solar Cells

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

    model of an OPV's absorbing layer. This improved understanding will guide the future development and optimization of organic solar cells by reducing laborious...

  1. 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 March 26, 2010 Graduate student teams from the University of Arkansas and the University of Maryland earned first place in the...

  2. Semiconductor nanowires: from LEDs to Solar Cells | MIT-Harvard...

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

    Semiconductor nanowires: from LEDs to Solar Cells May 4, 2010 at 3pm36-428 Silvija Gradeak Laboratory for Nanophotonics and Electronics, Massachusetts Institute of Technology...

  3. High-Intensity Silicon Vertical Multi-Junction Solar Cells |...

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

    operation for optimum compatibility with most power processing loads. An active cooling system in the StarGen solar concentrator removes heat from the PhotoVolt cells,...

  4. 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,...

  5. Simple Method Quantifies Recombination Pathways in Solar Cells (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-09-01

    NREL's analytic equation uses open-circuit voltage data to determine how much recombination occurs via different channels in a solar cell.

  6. CRADA Final Report: Process development for hybrid solar cells

    E-Print Network [OSTI]

    Ager, Joel W

    2011-01-01

    solar cells have the potential to reduce the cost of concentrator photovoltaic power generation (CPV) by 10-15%--an improvement

  7. Boosting Accuracy of Testing Multijunction Solar Cells (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2015-01-01

    This NREL Highlight describes research into a more precise technology for measuring efficiency of concentrating solar cells, which will enable the industry to advance.

  8. Structure of All-Polymer Solar Cells Impedes Efficiency

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

    device technology that will help realize the intrinsic potential of these materials. Solar Panels To Go Photovoltaic cells are a key component of most visions of a...

  9. New World Record Achieved in Solar Cell Technology | Department...

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

    a concentrator solar cell produced by Boeing-Spectrolab has recently achieved a world-record conversion efficiency of 40.7 percent, establishing a new milestone in...

  10. Alan J. Heeger, Conductive Polymers, and Plastic Solar Cells

    Office of Scientific and Technical Information (OSTI)

    - Science Video Interview, Vega.org (video) Next Generation Solar Cells; Production and Storage: Toward a More Efficient Use of Renewable Energy Sources (video) Low Cost...

  11. Controlled Structure of Organic-Nanomaterial Solar Cells - Energy...

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

    Controlled Structure of Organic-Nanomaterial Solar Cells Lawrence Berkeley National Laboratory Contact LBL About This Technology Technology Marketing SummaryOrganic, polymer-based...

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

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

    Ideal Configuration For Nanoscale Solar Cells Lawrence Berkeley National Laboratory Contact LBL About This Technology Technology Marketing SummaryThe standard design of excitonic...

  13. New Morphological Paradigm Uncovered in Organic Solar Cells

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

    and environmentally friendly energy source. Understanding the fundamentals of organic solar cell function is therefore vital to uncovering their maximum potential. Models...

  14. Reducing the Cost of Solar Cells

    SciTech Connect (OSTI)

    Scanlon, B.

    2012-04-01

    Solar-powered electricity prices could soon approach those of power from coal or natural gas thanks to collaborative research with solar startup Ampulse Corporation at the National Renewable Energy Laboratory. Silicon wafers account for almost half the cost of today's solar photovoltaic panels, so reducing or eliminating wafer costs is essential to bringing prices down. Current crystalline silicon technology converts energy in a highly efficient manner; however, that technology is manufactured with processes that could stand some improvement. The industry needs a method that is less complex, creates less waste and uses less energy. First, half the refined silicon is lost as dust in the wafer-sawing process, driving module costs higher. Wafers are sawn off of large cylindrical ingots, or boules, of silicon. A typical 2-meter boule loses as many as 6,000 potential wafers during sawing. Second, the wafers produced are much thicker than necessary. To efficiently convert sunlight into electricity, the wafers need be only one-tenth the typical thickness. NREL, the Oak Ridge National Laboratory and Ampulse have partnered on an approach to eliminate this waste and dramatically lower the cost of the finished solar panels. By using a chemical vapor deposition process to grow the silicon on inexpensive foil, Ampulse is able to make the solar cells just thick enough to convert most of the solar energy into electricity. No more sawdust - and no more wasting refined silicon materials. NREL developed the technology to grow high-quality silicon and ORNL developed the metal foil that has the correct crystal structure to support that growth. Ampulse is installing a pilot manufacturing line in NREL's Process Development Integration Laboratory, where solar companies can work closely with lab scientists on integrated equipment to answer pressing questions related to their technology development, as well as rapidly overcoming R and D challenges and risk. NREL's program is focused on transformative innovation in the domestic PV industry. With knowledge and expertise acquired from the PDIL pilot production line tools, Ampulse plans to design a full-scale production line to accommodate long rolls of metal foil. The Ampulse process 'goes straight from pure silicon-containing gas to high-quality crystal silicon film,' said Brent Nelson, the operational manager for the Process Development Integration Laboratory. 'The advantage is you can make the wafer just as thin as you need it - 10 microns or less.' Most of today's solar cells are made out of wafer crystalline silicon, though thin-film cells made of more exotic elements such as copper, indium, gallium, arsenic, cadmium, tellurium and others are making a strong push into the market. The advantage of silicon is its abundance, because it is derived from sand. Silicon's disadvantage is that purifying it into wafers suitable for solar cells can be expensive and energy intensive. Manufacturers add carbon and heat to sand to produce metallurgical-grade silicon, which is useful in other industries, but not yet suitable for making solar cells. So this metallurgical-grade silicon is then converted to pure trichlorosilane (SiCl3) or silane (SiH4) gas. Typically, the purified gas is then converted to create a silicon feedstock at 1,000 degrees Celsius. This feedstock is melted at 1,414 C and recrystallized into crystal ingots that are finally sawed into wafers. The Ampulse method differs in that it eliminates the last two steps in the traditional process and works directly with the silane gas growing only the needed silicon right onto a foil substrate. A team of NREL scientists had developed a way to use a process called hot-wire chemical vapor deposition to thicken silicon wafers with near perfect crystal structure. Using a hot tungsten filament much like the one found in an incandescent light bulb, the silane gas molecules are broken apart and deposited onto the wafer using the chemical vapor deposition technique at about 700 C - a much lower temperature than needed to make the wafer. The hot filament dec

  15. Graphene and SWNT film as Hole Transport Layer and Electrode for Solar Cells Shigeo Maruyama

    E-Print Network [OSTI]

    Maruyama, Shigeo

    Graphene and SWNT film as Hole Transport Layer and Electrode for Solar Cells Shigeo Maruyama], dry-deposited SWNTs-Si solar cell [4], graphene-Si solar cells, organic solar cell (OSC) and perovskite-type solar cells. Using millimeter-scale monocrystalline single-layer graphene and honeycomb

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

    E-Print Network [OSTI]

    Huang, Yanyi

    2003-01-01

    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-You Lia , Xin-Sheng Zhaoc a State Key Laboratory of Rare Earth Materials Chemistry and Applications

  17. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01

    current collecting grids,? Solar Energy Materials and Solarcountries of the European Union,? Solar Energy, 2014, M. A.physics and devices,? Solar Energy: The State of the Art, L.

  18. Laser beam apparatus and method for analyzing solar cells

    DOE Patents [OSTI]

    Staebler, David L. (Lawrenceville, NJ)

    1980-01-01

    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.

  19. The Dependence of Electrical Properties on Miscut Orientation in Direct Bonded III-V Solar Cell Layers

    E-Print Network [OSTI]

    Seal, Mark K.

    2015-01-01

    fabrication cost of multijunction solar cells, GaAs and InPfabrication of multijunction solar cells. At the interfacestructures in multijunction solar cells. Future work on this

  20. Band Gap Energy of Chalcopyrite Thin Film Solar Cell Absorbers Determined by Soft X-Ray Emission and Absorption Spectroscopy

    E-Print Network [OSTI]

    Bar, M.

    2010-01-01

    OF CHALCOPYRITE THIN FILM SOLAR CELL ABSORBERS DETERMINED BYchalcopyrite thin film solar cell absorbers significantlyof chalcopyrite thin film solar cell absorbers. excitation

  1. Design of Nanostructured Solar Cells Using Coupled Optical and Electrical Modeling

    E-Print Network [OSTI]

    Deceglie, Michael G

    2014-01-01

    J.   K. ;   Schropp,   R.   E.   I.   Solar  Energy  Materials  and  Solar  Cells   39.   Spinelli,  P. ;  J. ;  Vanecek,  M.   Solar  Energy   2004,  77,  (6),  

  2. CRADA Final Report: Process development for hybrid solar cells

    SciTech Connect (OSTI)

    Ager, Joel W

    2011-02-14

    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.

  3. An all metal solar cell Vrin R. A. Holm,

    E-Print Network [OSTI]

    An all metal solar cell Vårin R. A. Holm, University of Bergen Ranveig Flatabø, Martin Greve in Bergen, Norway. Traditional semiconductor solar cells, though in wide commercial use, have limitations related to cutoff wavelength, low theoretical efficiency limit, and high material costs

  4. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01

    CIGS, so the addition of the dc layer would not alter the material choice for a solar cell.solar cell, the use of GaAs has recently become feasible due to scalable manufacturing techniques, and compound materials such as CIGS (

  5. Emerging High-Efficiency Low-Cost Solar Cell Technologies

    E-Print Network [OSTI]

    McGehee, Michael

    J. of Photovoltaics, 2 (2012) p. 303. Si GaAs #12;Why thin film GaAs;Gallium Arsenide · The 1.4 eV band gap is ideal for solar cells. · High quality films are grownEmerging High-Efficiency Low-Cost Solar Cell Technologies Mike McGehee Materials Science

  6. Analytical determination of critical crack size in solar cells

    SciTech Connect (OSTI)

    Chen, C.P.

    1988-05-01

    Although solar cells usually have chips and cracks, no material specifications concerning the allowable crack size on solar cells are available for quality assurance and engineering design usage. Any material specifications that the cell manufacturers use were developed for cosmetic reasons that have no technical basis. Therefore, the Applied Solar Energy Corporation (ASEC) has sponsored a continuing program for the fracture mechanics evaluation of GaAs. Fracture mechanics concepts were utilized to develop an analytical model that can predict the critical crack size of solar cells. This model indicates that the edge cracks of a solar cell are more critical than its surface cracks. In addition, the model suggests that the material specifications on the allowable crack size used for Si solar cells should not be applied to GaAs solar cells. The analytical model was applied to Si and GaAs solar cells, but it would also be applicable to the semiconductor wafers of other materials, such as a GaAs thin film on a Ge substrate, using appropriate input data.

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

    SciTech Connect (OSTI)

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

    2005-01-01

    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.

  8. NUMERICAL MODELING OF 3D ORGANIC SOLAR CELLS Presented to the

    E-Print Network [OSTI]

    Kassegne, Samuel Kinde

    .2 Physical Process in Polymer: Fullerene Build Heterojunction Solar CellsNUMERICAL MODELING OF 3D ORGANIC SOLAR CELLS _______________ A Thesis Presented to the Faculty Solar Cells by Anurag Kaushik Master of Science in Electrical Engineering San Diego State University

  9. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01

    W. , Dunlop, E.D. Solar cell efficiency table (version 42),W. , Dunlop, E.D. Solar cell efficiency table (version 42),W. , Dunlop, E.D. Solar cell efficiency table (version 42),

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

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01

    en.wikipedia.org/wiki/Solar_cell_efficiency, accessed 10) J.Plot of best research solar cell efficiencies for variousPlot of best research solar cell efficiencies for various

  11. Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics

    E-Print Network [OSTI]

    Chung, Choong-Heui

    2012-01-01

    of a CIGS film of 19.9% efficiency solar cells taken fromCIGS grains of 19.9% efficiency solar cells [5] and currentof a CIGS film of 19.9% efficiency solar cells taken from

  12. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01

    A low-cost, high-efficiency solar cell based on dye-F. Dimroth, “High-efficiency solar cells from III-V compoundpower conversion efficiency of solar cells, quantification

  13. Ultrahigh Efficiency Multiband Solar Cells Final Report for Director's Innovation Initiative Project DII-2005-1221

    E-Print Network [OSTI]

    Ager III, Joel W.; Walukiewicz, W.; Yu, Kin Man

    2006-01-01

    W. Warta, “Solar Cell Efficiency Tables (Version 21),” Prog.Marti. , “Increasing the Efficiency of Ideal Solar Cells byP. Corkish, “Limiting efficiency of a multi-band solar cell

  14. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01

    silicon nanowires as solar cells and nanoelectronic powerTowards efficient hybrid solar cells based on fully polymerSariciftci, N. S. Hybrid solar cells, Inorg. Chim. Acta 361,

  15. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01

    semiconductor nanowire solar cells by selective-area metal-and Y. Yang, “A polymer tandem solar cell with 10.6% powerbulk heterojunction plastic solar cells by screen printing,”

  16. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01

    Towards efficient hybrid solar cells based on fully polymerS. , Sariciftci, N. S. Hybrid solar cells, Inorg. Chim. ActaY. , Warta, W. , Dunlop, E.D. Solar cell efficiency table (

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

    E-Print Network [OSTI]

    Huang, Jianqiao

    2012-01-01

    modeling of ? -Si : H solar cells with rough interfaces:of a p-i-n thin-film solar cell with front transparent con-amorphous-silicon-based P-I-N solar cells deposited on rough

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

    E-Print Network [OSTI]

    Armstrong, Paul Barber

    2010-01-01

    J. The physics of solar cells; Imperial College Press,for organic polymer solar cells investigated to date. Thebulk heterojunction organic solar cells, blends of a p-type

  19. Theory of Current Transients in Planar Semiconductor Devices: Insights and Applications to Organic Solar Cells

    E-Print Network [OSTI]

    Hawks, SA; Finck, BY; Schwartz, BJ

    2015-01-01

    impurity level for organic solar cells: Enhanced first-orderbulk heterojunction solar cells, Adv. Funct. Mater. 21,shunt leakage in thin-film solar cells, J. Appl. Phys. 108,

  20. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01

    Towards efficient hybrid solar cells based on fully polymerSariciftci, N. S. Hybrid solar cells, Inorg. Chim. Acta 361,radial GaAs nanopillar solar cells, Nano Lett. 11, 2490-