Sample records for dye-sensitized solar cells

  1. Dye-Sensitized Solar Cells

    Broader source: Energy.gov [DOE]

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

  2. Dye-sensitized solar cells

    DOE Patents [OSTI]

    Skotheim, Terje A. [Berkeley, CA

    1980-03-04T23:59:59.000Z

    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. Dye-sensitized solar cells

    DOE Patents [OSTI]

    Skotheim, T.A.

    1980-03-04T23:59:59.000Z

    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.

  4. 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...

  5. 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

  6. Hierarchically structured photoelectrodes for dye-sensitized solar cells

    E-Print Network [OSTI]

    Cao, Guozhong

    Hierarchically structured photoelectrodes for dye-sensitized solar cells Qifeng Zhang and Guozhong or one-dimensional assemblies. Introduction Dye-sensitized solar cells (DSCs) are a category Cao* DOI: 10.1039/c0jm04345a This paper highlights several significant achievements in dye-sensitized

  7. Sandia National Laboratories: dye-sensitized solar cell

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

    dye-sensitized solar cell Combining 'Tinkertoy' Materials with Solar Cells for Increased Photovoltaic Efficiency On December 4, 2014, in Energy, Materials Science, News, News &...

  8. 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 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

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

    E-Print Network [OSTI]

    Cao, Guozhong

    Dye-Sensitized Solar Cells DOI: 10.1002/anie.200704919 Aggregation of ZnO Nanocrystallites for High Conversion Efficiency in Dye-Sensitized Solar Cells** Qifeng Zhang, Tammy P. Chou, Bryan Russo, Samson A system consisting of a dye-sensitized semiconductor film and an electrolyte, dye-sensitized solar cells

  10. Laser processing of nanocrystalline TiO2 films for dye-sensitized solar cells

    E-Print Network [OSTI]

    Arnold, Craig B.

    Laser processing of nanocrystalline TiO2 films for dye-sensitized solar cells H. Kim,a) G. P­20 m thick) layers incorporated in dye-sensitized solar cells. Laser direct-write is a laser techniques to produce porous nc- TiO2 films required for dye-sensitized solar cells. The dye solar cells

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

    E-Print Network [OSTI]

    Wang, Zhong L.

    Planar Waveguide-Nanowire Integrated Three-Dimensional Dye-Sensitized Solar Cells Yaguang Wei, Chen to fabricate three-dimensional (3D) dye-sensitized solar cells (DSSCs) by integrating planar optical waveguide cells that can be expanded to organic- and inorganic-based solar cells. KEYWORDS Dye-sensitized solar

  12. Increased light harvesting in dye-sensitized solar cells with energy relay dyes

    E-Print Network [OSTI]

    McGehee, Michael

    Increased light harvesting in dye-sensitized solar cells with energy relay dyes Brian E. Hardin1 factors. However, dye-sensitized solar cells do not completely absorb all of the photons from the visible pathway to develop more efficient dye-sensitized solar cells. D ye-sensitized solar cells (DSCs) work

  13. The construction of tandem dye-sensitized solar cells from chemically-derived nanoporous photoelectrodes

    E-Print Network [OSTI]

    Park, Byungwoo

    The construction of tandem dye-sensitized solar cells from chemically-derived nanoporous Available online 24 October 2014 Keywords: Tandem solar cell Selective etching Dye-sensitized solar cell Nanoporous electrode a b s t r a c t A tandem dye-sensitized solar cell (tandem-DSSC) was synthesized

  14. 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 tandem solar cells, leading to higher power conversion efficiency. Dye-sensitized solar cells (DSSCs

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

    E-Print Network [OSTI]

    Plasmonic Enhancement of Dye-Sensitized Solar Cells Using Core- Shell-Shell Nanostructures Stafford and demonstrate near-field plasmonic enhancement of dye-sensitized solar cells (DSSCs) incorporating them being researched, dye-sensitized solar cells (DSSCs) are a promising alternative to traditional solar

  16. Dye-Sensitized Solar Cells DOI: 10.1002/anie.201300070

    E-Print Network [OSTI]

    Dye-Sensitized Solar Cells DOI: 10.1002/anie.201300070 Stable Dye-Sensitized Solar Cell,* and Udo Bach* Dye-sensitized solar cells (DSCs) can be fabricated from low- cost components with simple fields, including renewable energy research focusing on DSCs and solar-driven hydrogen generation from

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

    E-Print Network [OSTI]

    John, Sajeev

    Light-trapping in dye-sensitized solar cells Stephen Foster* and Sajeev John We demonstrate numerically that photonic crystal dye-sensitized solar cells (DSSCs) can provide at least a factor of one researched is the dye-sensitized solar cell (DSSC). These cells are inexpensive to make and boast power

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

    E-Print Network [OSTI]

    Advancing beyond current generation dye-sensitized solar cells Thomas W. Hamann,ab Rebecca A The most efficient dye-sensitized solar cells (DSSCs) have had essentially the same configuration on the fabrication and character- ization of new architectures for dye-sensitized solar cells. He now holds

  19. 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

  20. 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 materials such as dye-sensitized solar cells (DSSCs) made of sensitized nano- particulate thin-films.4 Since

  1. 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 Electrodes for High- Efficiency Dye-Sensitized Solar Cells** Xukai Xin, Ming He, Wei Han, Jaehan Jung, and Zhiqun Lin* Dye-sensitized solar cells (DSSCs) are among the most promising photovoltaic devices for low

  2. Determining the locus for photocarrier recombination in dye-sensitized solar cells

    E-Print Network [OSTI]

    Schiff, Eric A.

    Determining the locus for photocarrier recombination in dye-sensitized solar cells Kai Zhua) and E and infrared transmittance measurements on dye-sensitized solar cells based on a mesoporous titania (TiO2. © 2002 American Institute of Physics. DOI: 10.1063/1.1436533 Dye-sensitized solar cells based

  3. Dye-sensitized solar cells using laser processing techniques A. Piqu, a

    E-Print Network [OSTI]

    Arnold, Craig B.

    Dye-sensitized solar cells using laser processing techniques H. Kim,a A. Piqué, a G. P. Kushto,a R in dye-sensitized solar cells. LDW enables the fabrication of conformal structures containing metals that is ideally suited for dye-sensitized solar cells. In this experiment, a pulsed UV laser (355nm) is used

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

    E-Print Network [OSTI]

    Aksay, Ilhan A.

    ) electrodes were tested for catalytic performance in dye-sensitized solar cells (DSSCs). By using ethyl) this residue must not disperse in the electrolyte. KEYWORDS: graphene, dye-sensitized solar cell, cobalt redox mediator, triiodide, sacrificial binder 1. INTRODUCTION Dye-sensitized solar cells (DSSCs

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

    E-Print Network [OSTI]

    Cao, Guozhong

    ZnO nanoparticles and nanowire array hybrid photoanodes for dye-sensitized solar cells Supan for dye-sensitized solar cell DSC with NW arrays to serve as a direct pathway for fast electron transport Institute of Physics. doi:10.1063/1.3327339 Dye-sensitized solar cells DSCs have attracted a lot

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

    E-Print Network [OSTI]

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

  7. 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, TT1, to increase the overall power conversion efficiency of a dye-sensitized solar cell (DSC) from 3 be efficiently implemented in optimized dye-sensitized solar cells, but also highlights the need to design highly

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

    E-Print Network [OSTI]

    Hybrid Carbon Nanotubes-TiO2 Photoanodes for High Efficiency Dye-Sensitized Solar Cells Kadiatou photoanodes for dye- sensitized solar cells (DSCs), based on nanocrystalline TiO2 with limited addition applied (i.e., soaking in TiCl4 to boost open circuit photovoltage). INTRODUCTION Dye-sensitized solar

  9. 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 been demonstrated using dye-sensitized electrodes. The quantum yield for water splitting in these dye

  10. Review paper: Toward highly efficient quantum-dot-and dye-sensitized solar cells

    E-Print Network [OSTI]

    Park, Byungwoo

    Review paper: Toward highly efficient quantum-dot- and dye-sensitized solar cells Hongsik Choi Interface control Light harvesting Tandem solar cell a b s t r a c t Dye- and quantum-dot-sensitized solar technologies of silicon-based solar cells should be resolved [7]. Dye-sensitized solar cells (DSSCs) have been

  11. New Architectures for Dye-Sensitized Solar Cells Alex B. F. Martinson,[a, b

    E-Print Network [OSTI]

    New Architectures for Dye-Sensitized Solar Cells Alex B. F. Martinson,[a, b] Thomas W. Hamann of magnitude such as depicted in Figure 1. Abstract: Modern dye-sensitized solar cell (DSSC) tech- nology steadily climbing, one class--dye-sensi- tized solar cells (DSSCs)--has notably plateaued. After

  12. 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 References 6345 1. INTRODUCTION Dye-sensitized solar cells (DSSCs) have taken up broad interest. Graphene Applications in Other Types of Solar Cells 6343 7. Conclusions and Outlook 6343 Author Information

  13. Dye Sensitized Solar Cells Efforts at Ris National Laboratory Matteo Biancardo, Keld West, Frederik C. Krebs

    E-Print Network [OSTI]

    Dye Sensitized Solar Cells Efforts at Risø National Laboratory Matteo Biancardo, Keld West solar cells (http://www.risoe.dk/solarcells/). In this contribution we address optimizations of Dye Sensitized Solar Cells (DSSCs) through the combination of important issues like semitransparency, quasi

  14. Synthetic fabrication strategy optimizes the illumination geometry and transport properties of dye-sensitized solar cells.

    E-Print Network [OSTI]

    solar cells. Using oriented titanium oxide (TiO2 ) nanotube (NT) arrays has shown promise for dye- sensitized solar cells (DSSCs). High solar conversion efficiency requires that the incident light entersSynthetic fabrication strategy optimizes the illumination geometry and transport properties of dye-sensitized

  15. 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 as photoanode is presented. The effect of Graphene on dye loading and on efficiency of DSSC is quantitatively

  16. 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

    2012-01-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    can be mitigated by using dye-sensitized solar cells (DSSCs),4 which use organic dye molecules coated by nearly an order of magnitude through plasmon enhanced absorption by the dye.10 This particular solar cellComputational Modeling of Plasmon-Enhanced Light Absorption in a Multicomponent Dye Sensitized

  18. 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 Applications in Other Types of Solar Cells U 7. Conclusions and Outlook U Author Information V Corresponding Author V Notes V Biographies V Acknowledgments V Abbreviations V References W 1. INTRODUCTION Dye-sensitized

  19. Distance Dependence of Plasmon-Enhanced Photocurrent in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Distance Dependence of Plasmon-Enhanced Photocurrent in Dye-Sensitized Solar Cells Stacey D Sheridan Road, EVanston, Illinois, 60208-3113 Received March 25, 2009; E-mail: j-hupp@northwestern.edu Dye-sensitized solar cells (DSSCs) represent one of the most promising emerging technologies for light

  20. This image presents a scanning electron microscopy image of solid state dye-sensitized solar cell with a

    E-Print Network [OSTI]

    McGehee, Michael

    This image presents a scanning electron microscopy image of solid state dye-sensitized solar cell­57 Dye-sensitized solar cells (DSCs) have received wide-spread research attention due to their high power incorporated into solid-state dye-sensitized solar cells (ss-DSCs) by nanoimprint lithography. The reflectors

  1. 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 employed to substitute TiO2 nanoparticles for use in dye-sensitized solar cells. To fur- ther improve the performance of dye-sensitized TiO2 nanotube solar cells, efforts have been directed toward the optimization

  2. Pore-Filling of Spiro-OMeTAD in Solid-State Dye Sensitized Solar Cells: Quantification, Mechanism, and

    E-Print Network [OSTI]

    McGehee, Michael

    Pore-Filling of Spiro-OMeTAD in Solid-State Dye Sensitized Solar Cells: Quantification, Mechanism. Introduction Dye-sensitized solar cells (DSCs) are one of the most promising photovoltaic technologies. Liquid in solid- state dye-sensitized solar cells (ss-DSCs), which have solid-state holetransportmaterials (HTMs

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

    E-Print Network [OSTI]

    Cao, Guozhong

    Enhanced light-conversion efficiency of titanium- dioxide dye-sensitized solar cells-doped tin oxide (FTO) nanoparticles and the application of such electrodes on dye-sensitized solar cell to the presence of ITO or FTO nanoparticles. Keywords: dye-sensitized solar cell, nanoparticle, electrode film

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

    E-Print Network [OSTI]

    Lin, Zhiqun

    and the Ostwald ripening process. Dye-sensitized solar cells (DSSCs) assembled by employing these complex rutile method, dye-sensitized solar cells, post-treatments, light-to-electricity conversion efficiency candidate for use in water splitting, photo- catalysis, sensors, and dye-sensitized solar cells (DSSCs) over

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

    E-Print Network [OSTI]

    Lin, Zhiqun

    Dye-sensitized solar cells based on a nanoparticle/nanotube bilayer structure and their equivalent 2011, Accepted 1st December 2011 DOI: 10.1039/c2nr11617k Dye-sensitized solar cells (DSSCs) were to become an essential component of future global energy production. Dye sensitized solar cells (DSSCs)1

  6. 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

  7. Laminating solution-processed silver nanowire mesh electrodes onto solid-state dye-sensitized solar cells

    E-Print Network [OSTI]

    McGehee, Michael

    Accepted 6 March 2011 Available online 21 March 2011 Keywords: Dye-sensitized solar cells Nanomaterials meshes (Ag NWs) were laminated on top of solid-state dye-sensitized solar cells (ss-DSCs) as a reflective. Introduction Dye-sensitized solar cells (DSCs) [1­3] are an emerging photovoltaic technology on the verge

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

    E-Print Network [OSTI]

    McGehee, Michael

    Deposition of hole-transport materials in solid-state dye-sensitized solar cells by doctor Accepted 19 April 2010 Available online xxxx Keywords: Dye-sensitized solar cells Organic semiconductors)-9,90 -spirobifluorene) in solid-state dye-sensitized solar cells. Doctor-blading is a roll

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

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

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2013-10-17T23:59:59.000Z

    A University of Colorado research group led by Rich Noble has developed a novel approach to dye-sensitized solar cells that increases solar-to-electrical energy conversion....

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

    E-Print Network [OSTI]

    Yang, Peidong

    1387 E xcitonic solar cells1 --including organic, hybrid organic­ inorganic and dye-sensitized cells, limited primarily by the surface area of the nanowire array. The anodes of dye-sensitized solar cells efficiency, especially at longer wavelengths. Here we introduce a version of the dye-sensitized cell in which

  12. Inner-Sphere Electron-Transfer Single Iodide Mechanism for Dye Regeneration in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Goddard III, William A.

    the regeneration of the oxidized dye in dye-sensitized solar cells, the redox couple of I- /I3 - reduces the photo dye- sensitized solar cell (DSSC) in 1991,1 DSSCs have been considered as promising alternativesInner-Sphere Electron-Transfer Single Iodide Mechanism for Dye Regeneration in Dye-Sensitized Solar

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

    SciTech Connect (OSTI)

    BOWERMAN,B.; FTHENAKIS,V.

    2001-10-01T23:59:59.000Z

    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.

  14. High-Surface-Area Architectures for Improved Charge Transfer Kinetics at the Dark Electrode in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    ABSTRACT: Dye-sensitized solar cell (DSC) redox shuttles other than triiodide/iodide have exhibited: dark electrode, inverse opal, dye cell, fill factor INTRODUCTION Dye-sensitized solar cells (DSCsHigh-Surface-Area Architectures for Improved Charge Transfer Kinetics at the Dark Electrode in Dye-Sensitized

  15. Dye-Sensitized Solar Cells Based on Hierarchically Structured John Beach, Washington University in St. Louis, 2012 SURF Fellow

    E-Print Network [OSTI]

    Li, Mo

    Dye-Sensitized Solar Cells Based on Hierarchically Structured John Beach, Washington University to increase the efficiency of these solar cells. One of the barriers that needs to be overcome to make dye-sensitized in St. Louis, 2012 SURF Fellow Advisor: Prof. Zhiqun Lin; Mentor: Dr. Xukai Xin Introduction Dye-sensitized

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

    E-Print Network [OSTI]

    Meyers, Marc A.

    O2) semiconductor surface layer of dye-sensitized solar cells (DSSCs); however, many of them are used of the techniques alone. I. Introduction DYE-SENSITIZED solar cells (DSSCs) are comprised of three major and twoUniaxial Freezing, Freeze-Drying, and Anodization for Aligned Pore Structure in Dye-Sensitized

  17. Oriented Hierarchical Porous TiO2 Nanowires on Ti Substrate: Evolution of Nanostructures for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Park, Byungwoo

    of highly-oriented anatase TiO2 nanocrystals, are adopted as photoelectrodes in dye-sensitized solar cells. [1­4]. In particular, lightweight and flexible dye-sensitized solar cells (DSSCs) have received muchOriented Hierarchical Porous TiO2 Nanowires on Ti Substrate: Evolution of Nanostructures for Dye-Sensitized

  18. Charge Transport Limitations in Self-Assembled TiO2 Photoanodes for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Steiner, Ullrich

    Charge Transport Limitations in Self-Assembled TiO2 Photoanodes for Dye-Sensitized Solar Cells and Storage; Energy and Charge Transport The dye-sensitized solar cell (DSC) has attracted wide- spread. Thomson Avenue, Cambridge, CB3 0HE, United Kingdom *S Supporting Information ABSTRACT: Solid-state dye-sensitized

  19. Nanomaterials-Enabled Dye-Sensitized Solar Cells and Jun Lou1

    E-Print Network [OSTI]

    O-7 Nanomaterials-Enabled Dye-Sensitized Solar Cells Pei Dong1 and Jun Lou1 1 sensitized solar cells (DSCs), the third generation of solar cells, have attracted more and more attention Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, U.S.A. Dye

  20. Effects of cell area on the performance of dye sensitized solar cell

    SciTech Connect (OSTI)

    Khatani, Mehboob, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com; Mohamed, Norani Muti, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com; Hamid, Nor Hisham, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com; Sahmer, Ahmad Zahrin, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com; Samsudin, Adel, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com [Centre of Innovative Nanostructures and Nanodevices (COINN), UTP (Malaysia)

    2014-10-24T23:59:59.000Z

    Dye sensitized solar cells (DSCs) have significant advantage over the current silicon cells by having low manufacturing cost and potentially high conversion efficiency. Therefore, DSCs are expected to be used as the next generation solar cell device that covers wide range of new applications. In order to achieve highly efficient DSCs for practical application, study on the effect of increasing the cells area on the performance of dye sensitized solar need to be carried out. Three different DSC cell areas namely, 1, 12.96 and 93.5 cm{sup 2} respectively were fabricated and analyzed through solar simulator and electrochemical impedance spectroscopy (EIS). From the analysis of electrochemical impedance spectroscopy (EIS), it was observed that the cells electron lifetime was influenced significantly by the cells area. Although the collection efficiency of all cells recorded to be approximately 100% but higher recombination rate with increased cell area reduced the performance of the cell.

  1. Dye Sensitized Tandem Photovoltaic Cells

    SciTech Connect (OSTI)

    Barber, Greg D.

    2009-12-21T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Cao, Guozhong

    ZnO Nanostructures for Dye-Sensitized Solar Cells By Qifeng Zhang,* Christopher S. Dandeneau-low cost (US$0.40 kWh?1 ).[1] To aim at further lowering the production costs, dye-sensitized solar cells, such as solar cells, fuel cells, and biofuels. However, although these alternative energy sources have been

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

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    reaction limits their application as a working electrode in a liquid-type dye-sensitized solar cell (DSSC in a DSSC containing iodide/triiodide redox couples. This implementation is realized by inhibiting-sensitized solar cell (DSSC) to date because of their well-known catalytic property to redox reaction. Thus, it has

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

    E-Print Network [OSTI]

    Ni(III)/(IV) Bis(dicarbollide) as a Fast, Noncorrosive Redox Shuttle for Dye-Sensitized Solar Cells-marks@northwestern.edu; chadnano@northwestern.edu The favorable energetics of dye-sensitized solar cell (DSC) constituents have. Marks,*,, and Joseph T. Hupp*,,,§ Department of Chemistry, Argonne-Northwestern Solar Energy Research

  5. Charge Transport Properties in TiO2 Network with Different Particle Sizes for Dye Sensitized Solar Cells

    E-Print Network [OSTI]

    Cao, Guozhong

    the large improvement in performance of dye sensitized solar cells (DSCs) achieved in 1991, mesoporousCharge Transport Properties in TiO2 Network with Different Particle Sizes for Dye Sensitized Solar sensitized solar cells, nanoparticle size, impedance, charge transport properties INTRODUCTION Since

  6. Dynamics of charge transport and recombination in ZnO nanorod array dye-sensitized solar cells

    E-Print Network [OSTI]

    Dynamics of charge transport and recombination in ZnO nanorod array dye-sensitized solar cells Alex nanoparticles. Introduction Dye-Sensitized Solar Cells (DSSCs) comprise an increasingly attractive alternative photovoltaic technology.1,2 These photo- electrochemical cells use molecular dyes to sensitize high-area, wide

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

    E-Print Network [OSTI]

    as substructure templates. The aerogel templates are coated with ZnO via atomic layer deposition (ALD) to yieldDOI: 10.1002/adma.200702781 Aerogel Templated ZnO Dye-Sensitized Solar Cells** By Thomas W. Hamann produced from coating tem- plates of high aspect ratio substructures, exhibiting initial efficiencies up

  8. The Role of Confined Water in Ionic Liquid Electrolytes for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Goddard III, William A.

    for improving the performance of IL DSSC by replacing water with additives that would play the same role Structure, Quantum Chemistry,General Theory The dye-sensitized solar cell (DSSC) proposed by Gratzel et al.1, and nonflammable. However, with current ILs, the DSSC performance is degraded due to decreased reductant rates

  9. 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 cellsO) has been explored as an alternative material in dye-sensitized solar cells. The use of Zn as an alternative material for improving the solar cell performance in dye-sensitized solar cells due to (1) Zn

  10. 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

    and Their Application in Dye-Sensitized Solar Cells Akshay Kumar, Anuj R. Madaria, and Chongwu Zhou* Department array of TiO2 nanowires on FTO as the photoanode is demonstrated in dye-sensitized solar cell for applications related to solar energy such as dye-sensitized solar cell (to convert light into electricity),18

  11. Glass-Encapsulated Light Harvesters: More Efficient Dye-Sensitized Solar Cells by Deposition of Self-Aligned, Conformal, and Self-

    E-Print Network [OSTI]

    Glass-Encapsulated Light Harvesters: More Efficient Dye-Sensitized Solar Cells by Deposition Supporting Information ABSTRACT: A major loss mechanism in dye-sensitized solar cells (DSCs) is recombination% increase in relative efficiency versus control uncoated cells. Dye-sensitized solar cells (DSCs) have great

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

    E-Print Network [OSTI]

    Lin, Zhiqun

    An Unconventional Route to High-Efficiency Dye-Sensitized Solar Cells via Embedding Graphitic Thin into the conventional dye- sensitized solar cells (DSSCs), resulting in a remarkably improved cell efficiency due to its followed by direct carbonization. For dye-sensitized TiO2 based solar cells containing carbon/TiO2 thin

  13. A New Direction in Dye-Sensitized Solar Cells Redox Mediator Development: In Situ Fine-Tuning of the Cobalt(II)/(III) Redox

    E-Print Network [OSTI]

    A New Direction in Dye-Sensitized Solar Cells Redox Mediator Development: In Situ Fine 3168, Australia *S Supporting Information ABSTRACT: Dye-sensitized solar cells (DSCs) are an attractive to tackle present and future energy challenges. Dye-sensitized solar cells (DSCs) are considered

  14. Effects of Iodine Content in the Electrolyte on the Charge Transfer and Power Conversion Efficiency of Dye-Sensitized Solar Cells under

    E-Print Network [OSTI]

    Cao, Guozhong

    of Dye-Sensitized Solar Cells under Low Light Intensities Jo-Lin Lan, Tzu-Chien Wei,*, Shien-Ping Feng of dye-sensitized solar cells under lower light intensities. By analyzing the current-voltage behavior results in an exclusive application for indoor use. 1. INTRODUCTION Dye-sensitized solar cell (DSSC) has

  15. Titania Particle Size Effect on the Overall Performance of Dye-Sensitized Solar Cells Tammy P. Chou, Qifeng Zhang, Bryan Russo, Glen E. Fryxell, and Guozhong Cao*,

    E-Print Network [OSTI]

    Cao, Guozhong

    Titania Particle Size Effect on the Overall Performance of Dye-Sensitized Solar Cells Tammy P. Chou-6 To this point, the most efficient electrodes in dye-sensitized solar cells have been 10 µm thick mesoporous TiO2, efficient light absorption, and charge formation. In 1993, it was found that dye-sensitized solar cells were

  16. Multiple Step Growth of Single Crystalline Rutile Nanorods with the Assistance of Self-Assembled Monolayer for Dye Sensitized Solar Cells

    E-Print Network [OSTI]

    Pala, Nezih

    -Assembled Monolayer for Dye Sensitized Solar Cells Mengjin Yang, Suman Neupane, Xuewen Wang, Jin He, Wenzhi Li, superhydrophobic, superhydrophilic, dye sensitized solar cell #12;Introduction One dimensional (1D) structure photoanode in dye sensitized solar cells (DSSCs) to reduce numerous trapping sites in the conventional

  17. 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.

    An Integrated Power Pack of Dye-Sensitized Solar Cell and Li Battery Based on Double-Sided TiO2 harvest and storage processes. This power pack incorporates a series-wound dye- sensitized solar cell, nanostructures have been widely used in energy harvesting devices, such as dye-sensitized solar cells (DSSCs

  18. 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)

    2006-03-28T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Faber, C; Deutsch, T; Blase, X

    2012-01-01T23:59:59.000Z

    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.

  20. The effect of TiCl4-treated TiO2 compact layer on the performance of dye-sensitized solar cell

    E-Print Network [OSTI]

    Park, Byungwoo

    The effect of TiCl4-treated TiO2 compact layer on the performance of dye-sensitized solar cell by a factor of five compared with the bare cell. ? 2011 Elsevier B.V. All rights reserved. 1. Introduction Dye-sensitized: Received 11 October 2011 Accepted 25 October 2011 Available online 4 November 2011 Keywords: Dye-sensitized

  1. Application of 3A molecular sieve layer in dye-sensitized solar cells

    SciTech Connect (OSTI)

    Yan, Yuan; Wang, Jinzhong, E-mail: jinzhong-wang@hit.edu.cn, E-mail: qingjiang.yu@hit.edu.cn; Yu, Qingjiang, E-mail: jinzhong-wang@hit.edu.cn, E-mail: qingjiang.yu@hit.edu.cn; Huang, Yuewu; Chang, Quanhong; Hao, Chunlei; Jiao, Shujie; Gao, Shiyong; Li, Hongtao; Wang, Dongbo [Department of Opto-Electric Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, 150001 Harbin (China)

    2014-08-25T23:59:59.000Z

    3A molecular sieve layer was used as dehydration and electronic-insulation layer on the TiO{sub 2} electrode of dye-sensitized solar cells. This layer diminished the effect of water in electrolyte efficiently and enhanced the performance of cells. The conversion efficiency increased from 9.58% to 10.2%. The good moisture resistance of cells was attributed to the three-dimensional interconnecting structure of 3A molecular sieve with strong adsorption of water molecule. While the performance enhancement benefited from the suppression of the charge recombination of electronic-insulation layer and scattering effect of large particles.

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

    SciTech Connect (OSTI)

    Patra, Astam K.; Dutta, Arghya; Bhaumik, Asim, E-mail: msab@iacs.res.in

    2014-07-01T23:59:59.000Z

    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 iodinetriiodide 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 (5.15.4 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.

  3. Effects of Electron Trapping and Protonation on the Efficiency of Water-Splitting Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    energy in fuels is a key challenge for solar energy research. Water-splitting dye- sensitized light illumination. In these cells, a mesoporous anatase TiO2 anode is sensitized with a dye and a water- sensitized solar cells. In nanocrystalline TiO2 films, trap states are thought to be the related

  4. Diameter Dependence of Vertically-Aligned Single-Walled Carbon Nanotubes for Use as Counter Electrodes in Dye Sensitized Solar Cells

    E-Print Network [OSTI]

    for Use as Counter Electrodes in Dye Sensitized Solar Cells Ronald Hobson,1,2,3 Kehang Cui,1 Chiba TakaakiJapan Program, Rice University, Houston, Texas, U.S.A. Dye sensitized solar cells (DSSCs) are electrochemical. In comparison to conventional Si-based solar cells, the manufacturing cost of DSSCs are substantially low

  5. Fabrication of dye-sensitized solar cell (DSSC) using annato seeds (Bixa orellana Linn)

    SciTech Connect (OSTI)

    Haryanto, Ditia Allindira; Landuma, Suarni; Purwanto, Agus [Department of Chemical Engineering, Sebelas Maret University, Surakarta 632112 (Indonesia)

    2014-02-24T23:59:59.000Z

    The Fabrication of dye sensitized solar cell (DSSC) using Annato seeds has been conducted in this study. Annato seeds (Bixa orellana Linn) used as a sensitizer for dye sensitized solar cell. The experimental parameter was concentration of natural dye. Annato seeds was extracted using etanol solution and the concentration was controlled by varying mass of Annato seeds. A semiconductor TiO{sub 2} was prepared by a screen printing method for coating glass use paste of TiO{sub 2}. Construction DSSC used layered systems (sandwich) consists of working electrode (TiO{sub 2} semiconductor-dye) and counter electrode (platina). Both are placed on conductive glass and electrolytes that occur electrons cycle. The characterization of thin layer of TiO{sub 2} was conducted using SEM (Scanning Electron Microscpy) analysis showed the surface morphology of TiO{sub 2} thin layer and the cross section of a thin layer of TiO{sub 2} with a thickness of 1519 ?m. Characterization of natural dye extract was determined using UV-Vis spectrometry analysis shows the wavelength range annato seeds is 328515 nm, and the voltage (V{sub oc}) and electric current (I{sub sc}) resulted in keithley test for 30 gram, 40 gram, and 50 gram were 0,4000 V; 0,4251 V; 0,4502 V and 0,000074 A; 0,000458 A; 0,000857 A, respectively. The efficiencies of the fabricated solar cells using annato seeds as senstizer for each varying mass are 0,00799%, 0,01237%, and 0,05696%.

  6. Synthesis of Triphenylamine Trisazo Dye and Study of its Uses in Dye Sensitized Solar Cells

    E-Print Network [OSTI]

    G. K. R. Senadeera; K-j. Jiang

    A new triazo dye was synthesized from tri(p-aminophenyl)amine and 2 hydroxy-3-napthoic acid and explored the possibilities of its uses in dye sensitized solar cells for the first time. The photocells were able to generate reasonably high photocurrent in the presence of the electron donating ionic liquids in the electrolyte composed of redox couple I3- /I-. Cells fabricated by sensitizing TiO2 generated a short-circuit photocurrent of ~ 3.5 mA cm-2, an open-circuit photovoltage of ~ 500 mV with a total power conversion efficiency of ~ 1 % under simulated full sunlight of 100 mW cm-2 (Air Mass 1.5). 1.

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

    DOE Patents [OSTI]

    Zhang, Qifeng; Cao, Guozhong

    2013-10-15T23:59:59.000Z

    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.

  8. Improved dye-sensitized solar cells by composite ionic liquid electrolyte incorporating layered titanium phosphate

    SciTech Connect (OSTI)

    Cheng, Ping; Lan, Tian; Wang, Wanjun; Wu, Haixia; Yang, Haijun; Guo, Shouwu [National Key Laboratory of Nano/Micro Fabrication Technology, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240 (China); Deng, Changsheng; Dai, Xiaming [Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China)

    2010-05-15T23:59:59.000Z

    We reported a composite electrolyte prepared by incorporating layered {alpha}-titanium phosphate ({alpha}-TiP) into a binary ionic liquid of 1-propyl-3-methylimidazolium iodide (PMII) and 1-ethyl-3-methylimidazolium tetrafluoroborate (EmimBF{sub 4}) (volume ratio, 13:7) electrolyte. The addition of {alpha}-TiP markedly improved the photovoltaic properties of dye-sensitized solar cells (DSSCs) compared to that without {alpha}-TiP. The enhancement was explained by improved diffusion of tri-iodide (I{sub 3}{sup -}) ions, suppressed electron recombination with I{sub 3}{sup -} in the electrolyte and increased lifetime of electrons in mesoscopic TiO{sub 2} film. (author)

  9. 1/f Noise in dye-sensitized solar cells and NIR photon detectors P.V.V. Jayaweera a,b

    E-Print Network [OSTI]

    Matsik, Steven G.

    1/f Noise in dye-sensitized solar cells and NIR photon detectors P.V.V. Jayaweera a,b , P reserved. 1. Introduction Dye-sensitized solar cells (DSSCs) based on nanocrys- talline high bandgap oxide. Thus in addition to sensitization, the dye adsorbed on the nanocrystallites plays a key role

  10. 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.

    dynamics of dye-sensitized TiO2-based solar cells have been investigated to determine the effectsEffect of the Presence of Iodide on the Electron Injection Dynamics of Dye-Sensitized TiO2-Based Solar Cells Amanda L. Smeigh, Jordan E. Katz, Bruce S. Brunschwig,*,,§ Nathan S. Lewis,*, and James K

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

    E-Print Network [OSTI]

    to the spiro-OMeTAD. Introduction Dye-sensitized solar cells (DSCs) based on mesoporous titania and liquidSurface Passivation of Nanoporous TiO2 via Atomic Layer Deposition of ZrO2 for Solid-State Dye-Sensitized Solar Cell Applications Tina C. Li, Ma´rcio S. Go´es,,§ Francisco Fabregat-Santiago,*, Juan Bisquert

  12. Pomegranate leaves and mulberry fruit as natural sensitizers for dye-sensitized solar cells

    SciTech Connect (OSTI)

    Chang, Ho; Lo, Yu-Jen [Department of Mechanical Engineering, National Taipei University of Technology (China)

    2010-10-15T23:59:59.000Z

    This study employs chlorophyll extract from pomegranate leaf and anthocyanin extract from mulberry fruit as the natural dyes for a dye-sensitized solar cell (DSSC). A self-developed nanofluid synthesis system is employed to prepare TiO{sub 2} nanofluid with an average particle size of 25 nm. Electrophoresis deposition was performed to deposit TiO{sub 2} nanoparticles on the indium tin oxide (ITO) conductive glass, forming a TiO{sub 2} thin film with the thickness of 11 {mu}m. Furthermore, this TiO{sub 2} thin film was sintered at 450 C to enhance the thin film compactness. Sputtering was used to prepare counter electrode by depositing Pt thin film on FTO glass at a thickness of 20 nm. The electrodes, electrolyte (I{sub 3}{sup -}), and dyes were assembled into a cell module and illuminated by a light source simulating AM 1.5 with a light strength of 100 mW/cm{sup 2} to measure the photoelectric conversion efficiency of the prepared DSSCs. According to experimental results, the conversion efficiency of the DSSCs prepared by chlorophyll dyes from pomegranate leaf extract is 0.597%, with open-circuit voltage (V{sub OC}) of 0.56 V, short-circuit current density (J{sub SC}) of 2.05 mA/cm{sup 2}, and fill factor (FF) of 0.52. The conversion efficiency of the DSSCs prepared by anthocyanin dyes from mulberry extract is 0.548%, with V{sub OC} of 0.555 V and J{sub SC} of 1.89 mA/cm{sup 2} and FF of 0.53. The conversion efficiency is 0.722% for chlorophyll and anthocyanin as the dye mixture, with V{sub OC} of 0.53 V, J{sub SC} of 2.8 mA/cm{sup 2}, and FF of 0.49. (author)

  13. 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.

    ZnO nanotube-based dye-sensitized solar cell and its application in self-powered devices.1088/0957-4484/21/40/405203 ZnO nanotube-based dye-sensitized solar cell and its application in self-powered devices Jingbin Han1-length nanotubes as the photoanode for a dye-sensitized solar cell (DSSC), a full-sun conversion efficiency of 1

  14. ZnO-Al2O3 and ZnO-TiO2 Core-Shell Nanowire Dye-Sensitized Solar Cells Matt Law,, Lori E. Greene,, Aleksandra Radenovic, Tevye Kuykendall,,

    E-Print Network [OSTI]

    Yang, Peidong

    ZnO-Al2O3 and ZnO-TiO2 Core-Shell Nanowire Dye-Sensitized Solar Cells Matt Law,,§ Lori E. Greene the construction and performance of dye-sensitized solar cells (DSCs) based on arrays of ZnO nanowires coated loadings through an increase in nanowire array surface area. Introduction Dye-sensitized solar cells (DSCs

  15. Photovoltage Effects of Sintered IrO2 Nanoparticle Catalysts in Water-Splitting Dye-Sensitized Photoelectrochemical Cells

    E-Print Network [OSTI]

    . INTRODUCTION Inspired by dye-sensitized solar cells, water-splitting dye- sensitized photoelectrochemical cells-splitting dye-sensitized photoelectrochemical cells (WS- DSPECs) utilize high surface area TiO2 electrodes (WS-DSPECs) are attractive as a possible technology for converting solar energy to fuel. Like dye-sensitized

  16. The effects of 100 nm-diameter Au nanoparticles on dye-sensitized solar Changwoo Nahm,1

    E-Print Network [OSTI]

    Park, Byungwoo

    The effects of 100 nm-diameter Au nanoparticles on dye-sensitized solar cells Changwoo Nahm,1 nanoparticles for dye-sensitized solar cells (DSSCs). At the optimum Au/TiO2 mass ratio of 0.05, the power nanoparticles were also introduced to the electrodes of dye-sensitized solar cells (DSSCs), and the solar-cell

  17. Channeling of electron transport to improve collection efficiency in mesoporous titanium dioxide dye sensitized solar cell stacks

    SciTech Connect (OSTI)

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

    2014-02-03T23:59:59.000Z

    Dye-sensitized solar cell (DSC) modules are generally made by interconnecting large photoelectrode strips with optimized thickness (?14??m) and show lower current density (J{sub SC}) compared with their single cells. We found out that the key to achieving higher J{sub SC} in large area devices is optimized photoelectrode volume (V{sub D}), viz., thickness and area which facilitate the electron channeling towards working electrode. By imposing constraints on electronic path in a DSC stack, we achieved >50% increased J{sub SC} and ?60% increment in photoelectric conversion efficiency in photoelectrodes of similar V{sub D} (?3.36??10{sup ?4} cm{sup 3}) without using any metallic grid or a special interconnections.

  18. Improved performance of dye-sensitized solar cells with surface-treated TiO{sub 2} as a photoelectrode

    SciTech Connect (OSTI)

    Park, Su Kyung; Chung, Chinkap [Department of Chemistry, Keimyung University, Daegu 704-701 (Korea, Republic of)] [Department of Chemistry, Keimyung University, Daegu 704-701 (Korea, Republic of); Kim, Dae-Hwan; Kim, Cham; Lee, Sang-Ju [Green Energy Research Division, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 711-873 (Korea, Republic of)] [Green Energy Research Division, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 711-873 (Korea, Republic of); Han, Yoon Soo, E-mail: yshancu@cu.ac.kr [Department of Advanced Energy Material Science and Engineering, Catholic University of Daegu, Gyeongbuk 712-702 (Korea, Republic of)

    2012-10-15T23:59:59.000Z

    We report on the effects of surface-modified TiO{sub 2} on the performance of dye-sensitized solar cells (DSSCs). TiO{sub 2} surface was modified with Na{sub 2}CO{sub 3} via a simple dip coating process and the modified TiO{sub 2} was applied to photoelectrodes of DSSCs. By dipping of TiO{sub 2} layer into aqueous Na{sub 2}CO{sub 3} solution, the DSSC showed a power conversion efficiency of 9.98%, compared to that (7.75%) of the reference device without surface treatment. The UVvis absorption spectra, the impedance spectra and the dark current studies revealed that the increase of all parameters was attributed to the enhanced dye adsorption, the prolonged electron lifetime and the reduced interfacial resistance.

  19. Study of band bending effect in Dye Sensitized Solar Cell through Constant-Current-Discharging Voltage Decay

    E-Print Network [OSTI]

    Wang, Xiaoqi

    2012-01-01T23:59:59.000Z

    A measurement method of constant-current-discharging voltage decay is established to characterize the band bending effect in the heterojunction of conducting glass/TiO2 for typical dye-sensitized solar cells. Furthermore, a dark-state electron transport regarding the TiO2 conduction band bending is proposed based upon the viewpoints of thermionic emission mechanism, which suggests an origin of the band bending effect in a theoretical model. This model quantitatively agrees well with our experimental results and indicates that both the Fermi level decay in TiO2 and the potential difference across the heterojunction will lead to the TiO2 conduction band bending downwards.

  20. Hybrid structure of polyaniline/ZnO nanograss and its application in dye-sensitized solar cell with performance improvement

    SciTech Connect (OSTI)

    Zhu Shibu; Wei Wei; Chen Xiangnan [Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031 (China); Jiang Man, E-mail: jiangman1021@163.com [Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031 (China); Zhou Zuowan, E-mail: zwzhou@at-c.net [Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031 (China)

    2012-06-15T23:59:59.000Z

    Polyaniline (PANI) hybridized ZnO photoanode for dye-sensitized solar cell (DSSC) was primarily prepared via a two-step process which involved hydrothermal growth of ZnO nanograss on the fluorine-doped tin oxide (FTO) substrate and subsequently chemisorption of PANI on the surfaces of the ZnO nanorods. The PANI hybridized ZnO nanograss films were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectra (FT-IR), and the results indicated that there were chemical interactions between PANI and ZnO. Both pure ZnO nanograss and PANI hybridized ZnO nanograss were applied to DSSC. The results of photoelectrochemical measurement showed that the photocurrent density of PANI (100 mg/L) hybridized ZnO nanograss photoanode was significantly enhanced, and the overall light-conversion efficiency increased by 60%. The electrochemical impedance spectra (EIS) displayed that the electron densities in photoanodes of PANI hybridized ZnO nanograss were larger than that in pure ZnO nanograss. This is ascribed to more effective charge separation and faster interfacial charge transferring occurred in the hybrid photoanode. - Graphical abstract: Operational principle of the DSSC: the introduced hybridizing PANI layer performs effective charge separation and faster interfacial charge transferring. Highlights: Black-Right-Pointing-Pointer PANI/ZnO nanograss hybrid materials as photoanode in Dye-sensitized solar cell. Black-Right-Pointing-Pointer Photoelectric conversion efficiency after hybridization was enhanced by 60%. Black-Right-Pointing-Pointer PANI hybridizing ZnO nanograss induced a rapid charge separation.

  1. First-principles study of Carbz-PAHTDDT dye sensitizer and two Carbz-derived dyes for dye sensitized solar cells

    E-Print Network [OSTI]

    Mohammadi, Narges

    2014-01-01T23:59:59.000Z

    Two new carbazole-based organic dye sensitizers are designed and investigated in silico. These dyes are designed through chemical modifications of the conjugated bridge of a reference organic sensitizer known as Carbz-PAHTDDT (S9) dye. The aim of designing these dyes was to reduce the energy gap between their highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) and to red-shift their absorption response compared to those of the reference S9 dye sensitizer. This reference dye has a reported promising efficiency when coupled with ferrocene-based electrolyte composition. To investigate geometric and electronic structure, density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations were conducted on the new dyes as well as the reference dye. The present study indicated that the long-range correction to the theoretical model in the TD-DFT simulation is important to produce accurate absorption wavelengths.The theoretical studies have shown a reduced HOMO-LUMO gap ...

  2. Production of coreshell type conducting FTO/TiO{sub 2} photoanode for dye sensitized solar cells

    SciTech Connect (OSTI)

    Icli, Kerem Cagatay [Micro and Nanotechnology Graduate Program, Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Center for Solar Energy Research and Applications (GUNAM), Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Yavuz, Halil Ibrahim [Center for Solar Energy Research and Applications (GUNAM), Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Department of Metallurgical and Materials Engineering, Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Ozenbas, Macit, E-mail: ozenbas@metu.edu.tr [Center for Solar Energy Research and Applications (GUNAM), Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Department of Metallurgical and Materials Engineering, Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey)

    2014-02-15T23:59:59.000Z

    Coreshell 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: Coreshell 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.

  3. Performance enhancement of TiO2-based dye-sensitized solar cells by carbon nanospheres in photoanode

    E-Print Network [OSTI]

    Bayatloo, Elham; Polkoo, Sajad Saghaye

    2013-01-01T23:59:59.000Z

    The conversion efficiency of dye-sensitized solar cells (DSSCs) is optimized by modifying the optical design and improving absorbance within the cell. These objectives are obtained by creating different sized cavities in TiO2 photoanode. For this purpose, carbon nanospheres with diameters 100-600 nm are synthesized by hydrothermal method. A paste of TiO2 is mixed with various amounts of carbon nanospheres. During TiO2 photoanode sintering processes at 500C temperature, the carbon nanospheres are removed. This leads to random creation of cavities in the DSSCs photoanode. These cavities enhance light scattering and porosity which improve light absorbance by dye N719 and provide a larger surface area for dye loading. These consequences enhance performance of DSSCs. By mixing 3% Wt. carbon nanospheres in the TiO2 pastes, we were able to increase the short circuit current density and efficiency by 40% (from 12.59 to 17.73 mA/cm2) and 33% (from 5.72% to 7.59%), respectively.

  4. Geometries, Electronic Structures, And Spectral Properties Of Some Metal Free Phthalonitrile Derivatives For Enhancement Of The Dye Sensitized Solar Cells

    SciTech Connect (OSTI)

    Anbarasan, P. M. [Department of Physics, Periyar University, Salem-636 011, Tamilnadu (India)

    2010-08-06T23:59:59.000Z

    New technologies for direct solar energy conversion have gained more attention in the last few years. In particular, Dye Sensitized Solar Cells (DSSCs) are promising in terms of efficiency and low cost [1,2]. Benefited from systematic device engineering and continuous material innovation, a state of the art DSC with a ruthenium sensitizer has achieved a validated efficiency of 11.1%[3] measured under the air mass 1.5 global (AM1.5G) conditions.The optimized geometries of the 3, 4-Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile are shown in Fig. 1(a). The frontier molecular orbitals (MO) energies of the dyes 3, 4 Pyridinedicarbonitrile, 3-Nitrophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile are shown in Fig. 1(b). The HOMO-LUMO gap of the dye 3, 4 Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile in vacuum is 5.96 eV, 5.54 eV, 5.57 eV, 5.76 eV respectively. The geometries, electronic structures, polarizabilities, and hyperpolarizabilities of dyes 3, 4-Pyridinedicarbonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile were studied by using density functional theory with hybrid functional B3LYP, and the UV-Vis spectra were investigated by using TDDFT methods. The NBO results suggest that 3, 4-Pyridinedicarbonitrile, 3-Aminophthalonitrile 4-Aminophthalonitrile and 4-Methylphthalonitrile are all (D-pi-A) systems. The calculated isotropic polarizability of 3, 4-Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile is. 85.76, 112.72, 26.63 and 115.13 a.u., respectively. The calculated polarizability anisotropy invariant of 3, 4-Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile is 74.451, 83.533, 62.653 and 88.526 a.u., respectively. The hyperpolarizabilities of 3, 4-Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile is 0.80628, 5.60646, 7.7979 and 1.86216 (in a.u.), respectively. The frequencies of strongest IR absorption for 3, 4-Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile are 1614 cm{sup -1}, 290 cm{sup -1}, 387 cm{sup -1} and 846 cm{sup -1} and the frequencies of strongest Raman activity for 3, 4-Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile are 2345 cm{sup -1}, 2338 cm{sup -1},2329 cm{sup -1}, 2337cm{sup -1}, respectively. The electronic absorption spectral features in visible and near-UV region were assigned based on the qualitative agreement to TDDFT calculations. The absorptions are all ascribed to {pi}{yields}{pi}* transition. The three excited states with the lowest excited energies of 3, 4-Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile are photoinduced electron transfer processes that contributes sensitization of photo-to-current conversion processes. The interfacial electron transfer between semiconductor TiO{sub 2} electrode and dye sensitizer 3, 4- Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile is electron injection process from excited dyes as donor to the semiconductor conduction band. Based on the comparative analysis of geometries, electronic structures, and spectrum properties between 3, 4-Pyridinedicarbonitrile, 3-Aminophthalonitrile, 4-Aminophthalonitrile and 4-Methylphthalonitrile the role of amide and methyl groups in phthalonitrile is as follows: it enlarged the distance between electron donor group and semiconductor surface, and decreased the timescale of the electron injection rate, resulted in giving lower conversion efficiency. This indicates that the choice of the appropriate conjugate bridge in dye sensitizer is very important to enhance the performance of DSSC.

  5. Coumarin Dyes for Dye-Sensitized Solar Cells - A Long-Range-Corrected Density Functional Study

    E-Print Network [OSTI]

    Wong, Bryan M; 10.1063/1.3025924

    2010-01-01T23:59:59.000Z

    The excited-state properties in a series of coumarin solar cell dyes are investigated with a long-range-corrected (LC) functional which asymptotically incorporates Hartree-Fock exchange. Using time-dependent density functional theory (TDDFT), we calculate excitation energies, oscillator strengths, and excited-state dipole moments in each of the dyes as a function of the range-separation paramenter, mu. To investigate the acceptable range of mu and assess the quality of the LC-TDDFT formalism, an extensive comparison is made between LC-BLYP excitation energies and approximate coupled cluster singles and doubles (CC2) calculations. When using a properly-optimized value of mu, we find that the LC technique provides a consistent picture of charge-transfer excitations as a function of molecular size. In contrast, we find that the widely-used B3LYP hybrid functional severely overestimates excited-state dipole moments and underestimates vertical excitations energies, especially for larger dye molecules. The results ...

  6. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    efficiency in dye-sensitized solar cells based on Tio2Conversion by Dye-Sensitized Photovoltaic cells. InorganicConversion by Dye-Sensitized Photovoltaic Cells. Inorganic

  7. all-solid-state dye-sensitized solar: Topics by E-print Network

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

    low-cost, environmental (more) Dong, Pei 2013-01-01 2 ZnO Nanotube Based Dye-Sensitized Solar Cells Renewable Energy Websites Summary: templated by anodic aluminum oxide for use...

  8. Dye-Sensitized Solid State Solar Cells Sensitized with Natural Pigment Extracted from the Grapes G.G.G.M.N.Hemamali * , G.R.A.Kumara **

    E-Print Network [OSTI]

    unknown authors

    Abstract- The solar energy is an abundant, continuous and clean source of energy that can be used to produce electricity using many different photovoltaic designs. Dye sensitized solar cells based on TiO2 have drawn attention worldwide due to their low cost and easy preparation techniques compared to conventional silicon based photovoltaic devices. The objective of this work was to develop dye-sensitized solid-state solar cell (DSSC), in which the liquid electrolyte, commonly applied in photoelectrochemical cells, is replaced by CuSCN and compared the performance of the solar cells with anthocyanin extracted from grapes. Highly porous, TiO2 films have been prepared, on fluorine doped tin oxide (FTO) glass substrate, using P25 nm TiO2 particles in a TiO2 colloidal suspension. These films were used to construct FTO/TiO2/Natural Dye/CuSCN/Pt/FTO, DSSCs with natural anthocyanin sensitizer extracted from grapes and CuSCN as the hole conductor. The cells show open circuit voltage (Voc) of 0.449V, short-circuit current density (Jsc) of 1.91 mA cm-2 and 0.50 fill factor (FF) with an overall efficiency (?) of 0.43 %.

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

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    organic, hybrid and dye sensitized solar cells took place insolar cells, dye-sensitized solar cells, solar inks using

  10. Increasing the Conversion Efficiency of Dye-Sensitized TiO2 Photoelectrochemical Cells by Coupling to Photonic Crystals

    E-Print Network [OSTI]

    The mechanism of enhancing the light harvesting efficiency of dye-sensitized TiO2 solar cells by coupling TiO2Increasing the Conversion Efficiency of Dye-Sensitized TiO2 Photoelectrochemical Cells by Coupling to conventional single-crystal solar cells. In this cell, an optically excited dye injects electrons

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

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01T23:59:59.000Z

    Nanocrystalline dye-sensitized solar cell/copper indium3, pp. M. Grtzel, Dye-sensitized solar cells, Journal ofefficiency solar cell based on dye- sensitized colloidal

  12. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01T23:59:59.000Z

    electrodes for dye-sensitized solar cells, Nano Lett. 8 (electrodes for dye-sensitized solar cells, Nano Letters 8,

  13. 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 [Department of Chemistry, University of Alabama, 250 Hackberry Lane, Shelby hall, Tuscaloosa 35401 Alabama (United States); Yusoff, Mashitah M.; Jose, Rajan, E-mail: rjose@ump.edu.my [Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, 26300 Kuantan (Malaysia)

    2014-10-13T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    plasmon-enhanced dye- sensitized solar cells through metalnanostructure- based or dye-sensitized solar cells represent

  15. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    electrodes for dye? sensitizedsolarcells. Nanosolar cells and dye-sensitized solar cells. Figure 1-3 The

  16. 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)

    2010-12-15T23:59:59.000Z

    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)

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

    SciTech Connect (OSTI)

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

    2013-03-15T23:59:59.000Z

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

  18. Enhancement of the efficiency of dye-sensitized solar cell with multi-wall carbon nanotubes/polypyrrole composite counter electrodes prepared by electrophoresis/electrochemical polymerization

    SciTech Connect (OSTI)

    Luo, Jun; Niu, Hai-jun; Wen, Hai-lin [Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, Department of Macromolecular Material and Engineering, Heilongjiang University, Harbin 150086 (China); Wu, Wen-jun; Zhao, Ping [Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237 (China); Wang, Cheng; Bai, Xu-duo [Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, Department of Macromolecular Material and Engineering, Heilongjiang University, Harbin 150086 (China); Wang, Wen, E-mail: haijunniu@hotmail.com [School of Material Science and Engineering, Harbin Institute of Technology, Harbin 150080 (China)

    2013-03-15T23:59:59.000Z

    Graphical abstract: The overall energy conversion efficiency of the DSSC employing the MWCNT/PPy CE reached 3.78%. Compared with a reference DSSC using single MWCNT film CE with efficiency of 2.68%, the energy conversion efficiency was increased by 41.04%. Highlights: ? MWCNT/PPy composite film prepared by electrodeposition layer by layer was used as counter electrode in DSSC. ? The overall energy conversion efficiency of the DSSC was 3.78% by employing the composite film. ? The energy conversion efficiency increased by 41.04% compared with efficiency of 2.68% by using the single MWCNT film. ? We analyzed the mechanism and influence factor of electron transfer in the composite electrode by EIS. - Abstract: For the purpose of replacing the precious Pt counter electrode in dye-sensitized solar cells (DSSCs) with higher energy conversion efficiency, multi-wall carbon nanotube (MWCNT)/polypyrrole (PPy) double layers film counter electrode (CE) was fabricated by electrophoresis and cyclic voltammetry (CV) layer by layer. Atom force microscopy (AFM), scanning electron microscopy (SEM) and transmission electron microscope (TEM) demonstrated the morphologies of the composite electrode and Raman spectroscopy verified the PPy had come into being. The overall energy conversion efficiency of the DSSC employing the MWCNT/PPy CE reached 3.78%. Compared with a reference DSSC using single MWCNT film CE with efficiency of 2.68%, the energy conversion efficiency was increased by 41.04%. The result of impedance showed that the charge transfer resistance R{sub ct} of the MWCNT/PPy CE had the lowest value compared to that of MWCNT or PPy electrode. These results indicate that the composite film with high conductivity, high active surface area, and good catalytic properties for I{sub 3}{sup ?} reduction can potentially be used as the CE in a high-performance DSSC.

  19. Bandgap Engineering of 1-Dimensional Nitride and Oxynitride Materials for Solar Water Splitting

    E-Print Network [OSTI]

    Hahn, Christopher

    2012-01-01T23:59:59.000Z

    Shell Nanowire Dye-Sensitized Solar Cells. J. Phys. Chem. BNanoporous Tio2 Dye- Sensitized Solar Cells. Nonequilibrium

  20. Study on the use of TiO{sub 2} passivation layer to reduce recombination losses in dye sensitized solar cells

    SciTech Connect (OSTI)

    Eskander bin Samsudin, Adel; Mohamed, Norani Muti; Nayan, Nafarizal; Ali, Riyaz Ahmad Mohamed; Shariffuddin, Sharifah Amira Amir; Omar, Salwa [Electrical and Electronics Department, 31750, Tronoh, Universiti Teknologi PETRONAS (Malaysia); Fundamental and Applied Sciences Department, 31750, Tronoh, Universiti Teknologi PETRONAS (Malaysia); Electronic Engineering Department, Electrical and Electronic Engineering Faculty, Universiti Tun Hussein Onn Malaysia (UTHM) (Malaysia)

    2012-09-26T23:59:59.000Z

    A lot of research on various aspects of dye solar cells (DSC) has been carried out in order to improve efficiency. This paper analyzes the utilization of TiO{sub 2} passivation layers of different thicknesses by improving the electron transport properties. Four different thicknesses of passivation layers namely 10, 20, 50 and 100 nm were deposited onto the working electrode using r.f sputtering. The electrodes were assembled into TiO{sub 2} based DSC with active area of 1 cm{sup 2}. The solar performance was investigated using 100 mW/cm{sup 2} of AM 1.5 simulated sunlight from solar simulator. The kinetics of the solar cells was investigated using Electrochemical Impedance Spectroscopy (EIS) measurement and the spectral response was measured using Incident Photon to Electron Conversion (IPCE) measurement system. The highest efficiency was found for DSC with 20 nm passivation layer. DSCs with the passivation layer have open circuit voltage, V{sub OC} increased by 57 mV, their current density, J{sub SC} increased by 0.774 mA cm{sup -2} compared to the one without the passivation layer. The quantum efficiency of the 20 nm passivation layer is the highest, peaking at the wavelength of 534 nm, resulting in the highest performance. All DSCs with the passivation layer recorded higher ratio of R{sub BR}/R{sub T} where R{sub T} is the diffusion resistance of the TiO{sub 2} particles in the mesoscopic layer and R{sub BR} is the recombination resistance of the electron to the electrolyte. This implies that the recombination of the electrolyte I{sup -}{sub 3}/3I{sup -} couple at the substrate/electrolyte interface has been effectively reduced resulting in an enhanced efficiency.

  1. Solar energy conversion at dye sensitized nanostructured electrodes fabricated by sol-gel processing: Final report

    SciTech Connect (OSTI)

    Searson, P.C.; Meyer, G.J.

    1998-07-01T23:59:59.000Z

    The significant achievements accomplished in this program include: (1) the first demonstration of osmium polypyridyl compounds as sensitizers; (2) the first demonstration of donor-acceptor compounds as sensitizers; (3) the first utilization of alternative acac based sensitizer-semiconductor linkages; (4) the first demonstration of remote interfacial electron transfer; (5) the first application of bimetallic compounds as sensitizers; (6) the first correlation of the interfacial charge recombination rate constant with the open circuit photovoltage in sensitized materials; (7) the first demonstration of a solid state dye sensitized TiO{sub 2} cell; (8) an alternative band edge unpinning model for the nanocrystalline TiO{sub 2}/electrolyte interface at negative applied potentials; and (9) the first self-consistent model of electron transport in dye sensitized TiO{sub 2} films. In the following sections the authors summarize some of the results from this program and highlight the key findings.

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

    E-Print Network [OSTI]

    Broadband dye-sensitized upconversion of near-infrared light Wenqiang Zou1 , Cindy Visser1-junction solar cell. However, the practical applicability of the most efficient known upconversion materials by the dye-sensitized nanoparticles is dramatically enhanced (by a factor of 3,300) as a result of increased

  3. PHYSICAL REVIEW B 84, 245115 (2011) Electronic structure of dye-sensitized TiO2 clusters from many-body perturbation theory

    E-Print Network [OSTI]

    by the need for clean and sustainable energy. In this respect dye-sensitized solar cells (DSC) are considered the traditional solid-state cells is a dye-sensitized solar cell (DSC).1,2 In this type of cell, the lightPHYSICAL REVIEW B 84, 245115 (2011) Electronic structure of dye-sensitized TiO2 clusters from many

  4. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    Gap NIR Near Infrared DSSC Dye Sensitized Solar Cell TiOinterplay among various DSSC components. DSSCs consist of ainvestigated. In a conventional DSSC, a thick semiconducting

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

    E-Print Network [OSTI]

    Kronawitter, Coleman

    2012-01-01T23:59:59.000Z

    to a series of dye-sensitized solar cells to achieve waterthe design of dye-sensitized solar cells, which require dyeevident in dye-sensitized solar cells when planar TiO 2 dye

  6. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    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

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

    E-Print Network [OSTI]

    Armstrong, Paul Barber

    2010-01-01T23:59:59.000Z

    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

  8. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    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

  9. Single Nanowire Probe for Single Cell Endoscopy and Sensing

    E-Print Network [OSTI]

    Yan, Ruoxue

    2010-01-01T23:59:59.000Z

    P. D. Nanowire dye-sensitized solar cells. Nat Mater 4, 455-shell nanowire dye-sensitized solar cells. J Phys Chem BThe anodes of dye-sensitized solar cells 120 are typically

  10. Investigation of Solar Energy Transfer through Plasmonic Au Nanoparticle-doped Sol-derived TiO? Thin Films in Photocatalysis and Photovoltaics /

    E-Print Network [OSTI]

    Zelinski, Andrew

    2013-01-01T23:59:59.000Z

    Nanoparticles in Dye-Sensitized Solar Cells. ACS Nano. 2012,to the operation of a Dye-Sensitized solar cell. Figure 13:gas sensors, Dye Sensitized Solar Cells, and optical

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

    E-Print Network [OSTI]

    Maruyama, Shigeo

    of heterojunction solar cells and dye-sensitized solar cells (DSSCs). The structure of SWNTs was controlled nanotubes, Micro-honeycomb, SWNT-Si solar cell, Dye-sensitized solar cell, Graphene 1. Introduction Single and structural simplicity. Dye-sensitized solar cells (DSSCs)6 have the advantages of relatively high PCE values

  12. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    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

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

    E-Print Network [OSTI]

    Chen, Junhong

    include dye-sensitized solar cells, quantum- dot-sensitized solar cells, and p-n junction solar cells their efficiencies more practical. Now the third-generation solar cells, such as dye-sensitized solar cells (DSSCsNANO REVIEW Enhancing Solar Cell Efficiencies through 1-D Nanostructures Kehan Yu ? Junhong Chen

  14. Effective Panchromatic Sensitization of Electrochemical Solar Cells: Strategy and Organizational Rules for Spatial Separation of

    E-Print Network [OSTI]

    -neutral sources. Dye- sensitized solar cells (DSCs), comprising chromophores, redox shuttles, and nanoporousEffective Panchromatic Sensitization of Electrochemical Solar Cells: Strategy and Organizational National Laboratory, Argonne, Illinois 60439, United States *S Supporting Information ABSTRACT: Dye-sensitized

  15. (Melanin-Sensitized Solar Cell) : 696220016

    E-Print Network [OSTI]

    the majority dye-sensitized solar cell research all uses the Ruthenium-complex as a light harvester. Dye-sensitized solar cell, DSSC 1991GrätzelDSSC[1] DSSCGrätzel cellDSSC polypyridyl complexes (Melanin-Sensitized Solar Cell) : : : 696220016 #12; #12;#12; #12;I PLD

  16. Dye Sensitization of Nanocrystalline Titanium Dioxide with Osmium and Ruthenium Polypyridyl Complexes

    E-Print Network [OSTI]

    Sauv, Genevive

    Dye Sensitization of Nanocrystalline Titanium Dioxide with Osmium and Ruthenium Polypyridyl synthesized and used to sensitize nanoporous titanium dioxide electrodes to solar illumination. The spectral optimization in operating photoelectrochemical cells for solar energy conversion applications. Of the materials

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

    E-Print Network [OSTI]

    Huang, Yanyi

    . A sandwich-type solar cell fabricated by this dye-sensitized nanocrystalline TiO2 film generated 6:1 mA cm?2; Nanocrystalline TiO2; Dye sensitized solar cell; Terpyridyl ruthenium dyes; Photoelectrochemical solar cells unmatched performance in dye staff studied as solar cell sensitizer before 1997. Only recently, a black dye

  18. Sandia National Laboratories: control key solar cell material...

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

    with metal-organic framework (MOF) materials by combining them with dye-sensitized solar cells (DSSCs). ... Last Updated: December 4, 2014 Go To Top Exceptional service...

  19. Sandia National Laboratories: control key solar cell interfaces

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

    with metal-organic framework (MOF) materials by combining them with dye-sensitized solar cells (DSSCs). ... Last Updated: December 4, 2014 Go To Top Exceptional service...

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

    E-Print Network [OSTI]

    with surface hopping in the Kohn-Sham basis. Representing the dye-sensitized semiconductor Gra¨tzel cellTime-Domain ab Initio Study of Charge Relaxation and Recombination in Dye-Sensitized TiO2 Walter R understanding of these processes is crucial for improving solar cell design and optimizing photovoltaic current

  1. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    dye-sensitized solar cells, solar inks using conventionalof degradation of solar cells, since a material structure,higher effect on the solar cells stability and performance.

  3. Influence of the Electron-Cation Interaction on Electron Mobility in Dye-Sensitized ZnO and TiO2 Nanocrystals: A Study Using Ultrafast Terahertz Spectroscopy

    E-Print Network [OSTI]

    Ku?el, Petr

    understood key processes in dye-sensitized solar cells. We have employed time-resolved spectroscopies by electrical techniques. The operation of a dye-sensitized solar cell relies on the efficient electron are not necessarily connected, and that charge transport in the sensitized solar cell material can differ from

  4. Commercialization potential of dye-sensitized mesoscopic solar cells

    E-Print Network [OSTI]

    Tan, Kwan Wee

    2008-01-01T23:59:59.000Z

    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 ...

  5. Non-adiabatic molecular dynamics simulation of ultrafast solar cell electron transfer

    E-Print Network [OSTI]

    confinement devices [1­5]. Solar cells of the Graetzel type [6,7] are based on dye sensitized nanocrystalline in solar cells, photocatalysis and photoelectrolysis. The electronic structure of the dye cell; Ultrafast electron transfer; Non-adiabatic molecular dynamics simulation; Dye sensitized titanium

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

    E-Print Network [OSTI]

    Kuiken, Benjamin E. Van

    2014-01-01T23:59:59.000Z

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

  7. Spectral sensitization of nanocrystalline solar cells

    DOE Patents [OSTI]

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

    2002-01-01T23:59:59.000Z

    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.

  8. Photocurrent Enhancement by Multilayered Porphyrin Sensitizers in a Photoelectrochemical Cell

    E-Print Network [OSTI]

    Dinolfo, Peter H.

    be useful in dye-sensitized solar cells (DSSCs). We report on the photoelectrochemical responses scheme for use in photoelectrochemical cells. KEYWORDS: porphyrin, light harvesting, dye-sensitized solar nanocrystalline titania and I- / I3 - redox shuttle electrolyte, dye-sensitized solar cells (DSSCs) have become

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

    E-Print Network [OSTI]

    Lee, Tao Hua

    2012-02-14T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Lee, Tao Hua

    2012-02-14T23:59:59.000Z

    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...

  11. 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

  12. Sandia National Laboratories: Solar

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

    recent successes with metal-organic framework (MOF) materials by combining them with dye-sensitized solar cells (DSSCs). ... Page 2 of 1712345...10...Last Last Updated:...

  13. 6090 Chem. Commun., 2010, 46, 60906092 This journal is c The Royal Society of Chemistry 2010 Porphyrin sensitized solar cells: TiO2 sensitization with a p-extended

    E-Print Network [OSTI]

    been synthesized and successfully applied to dye-sensitized solar cells with a power conversion the conditions employed here. Dye-sensitized solar cells (DSSCs) have attracted much attention as promising Porphyrin sensitized solar cells: TiO2 sensitization with a p-extended porphyrin possessing two anchoring

  14. DFT-MD approach to TiO2/liquid interface systems for photocatalysis and dye-sensitised solar cell

    E-Print Network [OSTI]

    Katsumoto, Shingo

    DFT-MD approach to TiO2/liquid interface systems for photocatalysis and dye-sensitised solar cell- namics (MD) analysis of TiO2/solution in- terfaces related to photocatalysis and dye- sensitized solar

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

    E-Print Network [OSTI]

    Linfoot, Charlotte Louise

    2011-01-01T23:59:59.000Z

    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 ...

  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 nanotubes can be effectively controlled for the suitable use for a hybrid solar cell by varying the diameter

  17. X-ray absorption spectroscopy of biomimetic dye molecules for solar cells Peter L. Cook,1

    E-Print Network [OSTI]

    Himpsel, Franz J.

    X-ray absorption spectroscopy of biomimetic dye molecules for solar cells Peter L. Cook,1 Xiaosong November 2009 Dye-sensitized solar cells are potentially inexpensive alternatives to traditional semiconductor solar cells. In order to optimize dyes for solar cells we systematically investigate

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

    E-Print Network [OSTI]

    Armstrong, Paul Barber

    2010-01-01T23:59:59.000Z

    of solid-state dye sensitized cells have previously beenon organic polymer and dye-sensitized cells. The detailedof a Typical Dye-Sensitized Cell12 Design of Dyes for Dye-

  19. 2008 Solar Technologies Market Report

    E-Print Network [OSTI]

    Price, S.

    2010-01-01T23:59:59.000Z

    organic cells and dye-sensitized cells, respectively. Figureinclude dye-sensitized and organic PV cells, which have

  20. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesis of 2Dand WaterThe Future isThe Iron SpinTheANSER

  1. EEE 565 Solar Cells Course Objective: To introduce the basic concepts of the operation of photovoltaic devices, the

    E-Print Network [OSTI]

    Zhang, Junshan

    ) Organic PV/Advanced Concept Devices (2 week) 9) Photochemical/Dye Sensitized Solar Cells (1 weeks) 10EEE 565 Solar Cells Fall 2012 Course Objective: To introduce the basic concepts of the operation solar cell technologies, and how they are integrated into solar cell systems. Topics: 1) Photovoltaic

  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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm)HydrogenRFP » Important TrinityEnergy the Wayby using

  3. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration would likeConstitution AndControllingCoolCorrective Action1,a,EnergyEnergy

  4. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogenIT |HotImpact ofVisiting20143101Efficiency -

  5. Showcasing the research of quantum dot sensitized solar cells from Prof. J.J.Tian's and Prof. G.Z.Cao's lab,

    E-Print Network [OSTI]

    Cao, Guozhong

    . Introduction Quantum dot sensitized solar cells (QDSCs) can be regarded as a derivative of dye-sensitized solarShowcasing the research of quantum dot sensitized solar cells from Prof. J.J.Tian's and Prof. G cells A hierarchical structure of ZnO/TiO2 nanocable photoanode for quantum dot sensitized solar cells

  6. Prospective Article Materials processing strategies for colloidal quantum dot solar cells

    E-Print Network [OSTI]

    energy sources, particularly with cheap and plentiful natural gas, solar photovoltaic systems must cost of the solar panels themselves. Third-generation photovoltaic systems, including organic, dye-sensitized, and colloidal quantum dot (CQD) solar cells, offer a path to low-weight, low-cost, and prospectively high

  7. Influence of Cationic Precursors on CdS Quantum-Dot-Sensitized Solar Cell Prepared by Successive Ionic Layer Adsorption and

    E-Print Network [OSTI]

    Cao, Guozhong

    as 15% was achieved for perovskite-sensitized solar cells.7 As a derivative of dye-sensitized solarInfluence of Cationic Precursors on CdS Quantum-Dot-Sensitized Solar Cell Prepared by Successive (QDs) onto porous oxide films for quantum-dot-sensitized solar cell (QDSC) applications. In this work

  8. A Porous Multilayer Dye-Based Photoelectrochemical Cell That Unexpectedly Runs Kathryn E. Splan, Aaron M. Massari, and Joseph T. Hupp*

    E-Print Network [OSTI]

    -area dye-sensitized solar cells has advanced significantly over the past 12 years, the cells themselves with conventional dye-senstized solar cells (DSSCs). In constrast to DSSCs, which work by electron injection from photochemical approaches to solar energy conversion is dye sensitization of wide band gap semiconductors.1

  9. Solar | Department of Energy

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

    gain a better understanding of the 'nano' scale as it relates to the creation of a (dye-sensitized) solar cell (DSSC). The introductory lessons guide students through activities...

  10. A Highly Efficient Solar Cell Made from a Dye-Modified ZnO-Covered TiO2 Nanoporous Electrode

    E-Print Network [OSTI]

    Huang, Yanyi

    -circuit photovoltage. Introduction Overall power conversion efficiency1,2 reaching 10% for dye sensitized solar cellA Highly Efficient Solar Cell Made from a Dye-Modified ZnO-Covered TiO2 Nanoporous Electrode Zhong A photoelectrochemical solar cell based on porous ZnO-covered TiO2 film has been fabricated with ruthenium bipyridyl

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

    E-Print Network [OSTI]

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

    2014-11-24T23:59:59.000Z

    . Mater. 2010, 22, E254?E258. (10) Sarkar, K.; Braden, E. V.; Pogorzalek, S.; Yu, S.; Roth, S. V.; Mu?ller-Buschbaum, P. Monitoring Structural Dynamics of in Situ Spray-Deposited Zinc Oxide Films for Application in Dye-Sensitized Solar Cells. Chem... , 2112?2114. (17) Sarkar, K.; Braden, E. V.; Fro?schl, T.; Hu?sing, N.; Mu?ller- Buschbaum, P. Spray-Deposited Zinc Titanate Films Obtained via Sol?Gel Synthesis for Application in Dye-Sensitized Solar Cells. J. Mater. Chem. A 2014, 2, 15008?15014. (18...

  12. 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

  13. Structure of All-Polymer Solar Cells Impedes Efficiency

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

    promising material combinations (polymerfullerene, polymerinorganic, all-polymer, and dye-sensitized cells), seeking a deeper understanding of their fundamental structure,...

  14. Synthesis of CdSe quantum dots for quantum dot sensitized solar cell

    SciTech Connect (OSTI)

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

    2014-04-24T23:59:59.000Z

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

  15. Electron Transfer Dynamics in Efficient Molecular Solar Cells

    SciTech Connect (OSTI)

    Meyer, Gerald John

    2014-10-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Ladewski, Rebecca L. (Rebecca Lynn)

    2012-01-01T23:59:59.000Z

    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 ...

  17. Influence of Different Iodide Salts on the Performance of Dye-Sensitized Solar Cells Containing Phosphazene-Based Nonvolatile Electrolytes

    E-Print Network [OSTI]

    impedance spectra (EIS) under open circuit and forward bias conditions were used to study the separate

  18. 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

  19. Photoconductivity of an inorganic/organic composite containing dye-sensitized nanocrystalline titanium dioxide

    E-Print Network [OSTI]

    Harth, Eva M.

    composed of dye-sensitized nanocrystalline titanium dioxide (TiO2) particles, a conjugated polymer which involves photophysical processes in the dye-loaded TiO2 nanoparticles. 1998 American Institute into electric current was demonstrated for photoelectrochemical cells with nanocrys- talline TiO2 electrodes

  20. Mesoporous TiO2 beads for high efficiency CdS/ CdSe quantum dot co-sensitized solar cells

    E-Print Network [OSTI]

    Cao, Guozhong

    ) as a derivative of dye-sensitized solar cells (DSCs) have attracted considerable attention and been regardedMesoporous TiO2 beads for high efficiency CdS/ CdSe quantum dot co-sensitized solar cells Ru Zhou for a CdS/CdSe quantum dot (QD) co-sensitized solar cell, which was constructed with the mesoporous TiO2

  1. Nanoscale Charge Transport in Excitonic Solar Cells

    SciTech Connect (OSTI)

    Venkat Bommisetty, South Dakota State University

    2011-06-23T23:59:59.000Z

    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.

  2. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    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

  3. Assessing Possibilities & Limits for Solar Cells

    E-Print Network [OSTI]

    Nayak, Pabitra K; Cahen, David

    2011-01-01T23:59:59.000Z

    What are the solar cell efficiencies that we can strive towards? We show here that several simple criteria, based on cell and module performance data, serve to evaluate and compare all types of today's solar cells. Analyzing these data allows to gauge in how far significant progress can be expected for the various cell types and, most importantly from both the science and technology points of view, if basic bounds, beyond those known today, may exist, that can limit such progress. This is important, because half a century after Shockley and Queisser (SQ) presented limits, based on detailed balance calculations for single absorber solar cells, those are still held to be the only ones, we need to consider; most efforts to go beyond SQ are directed towards attempts to circumvent them, primarily via smart optics, or optoelectronics. After formulating the criteria and analyzing known loss mechanisms, use of such criteria suggests - additional limits for newer types of cells, Organic and Dye-Sensitized ones, and th...

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

    E-Print Network [OSTI]

    Skotheim, T.

    2010-01-01T23:59:59.000Z

    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

  5. Electrochemical Synthesis and Structural Characterization of Titania Nanotubes

    E-Print Network [OSTI]

    Nguyen, Que Anh

    2010-01-01T23:59:59.000Z

    such as sensors, dye sensitized solar cells, and batteriesmaterial in dye sensitized solar cells [Zhu et al. , 2007;et al. , 2007]. Dye sensitized solar cells, as devel- oped

  6. Synthesis and photovoltaic application of coper (I) sulfide nanocrystals

    E-Print Network [OSTI]

    Wu, Yue

    2008-01-01T23:59:59.000Z

    D. , Nanowire dye sensitized solar cells. Nature Mater. 4,by nanocrystalline dye- sensitized solar cells. J. Photoch.Nanowire-based dye-sensitized solar cells. Appl. Phys. Lett.

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

    E-Print Network [OSTI]

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

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

    SciTech Connect (OSTI)

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

    2011-10-26T23:59:59.000Z

    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.

  9. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    of organic based solar cells and distinguish them from theirof nanocrystal-based solar cells. No one approach orNov, 2005). Chapter 4 Hybrid solar cells with 3-dimensional

  10. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    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

  11. 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

  12. Ionic liquids for rechargeable lithium batteries

    E-Print Network [OSTI]

    Salminen, Justin; Papaiconomou, Nicolas; Kerr, John; Prausnitz, John; Newman, John

    2008-01-01T23:59:59.000Z

    efficiency of dye-sensitized solar cells, J. Phys. Chem.in dye-sensitized nanocrystalline solar cells, J. Phys.

  13. SOLUTION-PROCESSED INORGANIC ELECTRONICS

    E-Print Network [OSTI]

    Bakhishev, Teymur

    2011-01-01T23:59:59.000Z

    Electrodes for Dye-Sensitized Solar Cells, Nano Letters,diodes (OLEDs), dye- sensitized solar cells, as well as

  14. Chemically Modified Metal Oxide Nanostructure for Photoelectrochemical Water Splitting

    E-Print Network [OSTI]

    Wang, Gongming

    2013-01-01T23:59:59.000Z

    splitting, dye-sensitized solar cells and photocatalysis. Byhybrid devices such as dye sensitized solar cell-PEC hybrid

  15. Three approaches to economical photovoltaics: conformal Cu2S, organic luminescent films, and PbSe nanocrystal superlattices

    E-Print Network [OSTI]

    Carbone, Ian Anthony

    2013-01-01T23:59:59.000Z

    as an effective dye sensitized solar cell ma- terial. Intransport in dye-sensitized nanocrystalline solar cells. The

  16. Laser Induced Breakdown Spectroscopy and Applications Toward Thin Film Analysis

    E-Print Network [OSTI]

    Owens, Travis Nathan

    2011-01-01T23:59:59.000Z

    extensively in dye-sensitized solar cells for their porositylayers for dye-sensitized solar cells [59]. A mortar and

  17. Tailored net-shape powder composites by spark plasma sintering

    E-Print Network [OSTI]

    Khaleghi, Evan Aryan

    2012-01-01T23:59:59.000Z

    Structure in Dye Sensitized Solar Cells," Jour. Am. Cer.Pore Structure in Dye Sensitized Solar Cells, International

  18. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    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 (

  19. Solid State Solar Cells Based On Tio2 Sensitized With Natural Pigment Extracted From the Anthurium

    E-Print Network [OSTI]

    G. R. A. Kumara

    Abstract: The purpose of this experiment was to create functional dye-sensitized solid state solar cells using natural pigments extracted from the blood red Anthurium as the electron donating species. Natural dye was extracted and adsorbed onto a nano-porous titania substrate. Platinum coated glass was used as the counter electrode. The cells were prepared using drop coating method to get a thickness around 10?m using 25 nm size TiO2 particles. Using the extracted natural dye we have been able to obtain high efficiencies with CuSCN over CuI hole conductor. The prepared cells show open circuit voltage (Voc) of 0.46 V and 0.43 of fill factor (FF) with an overall efficiency (?) of 0.34 % for CuSCN over the CuI hole conductor. Nevertheless short circuit current density (Jsc) was 2.37 mA cm-2 for CuI, it was 1.73 mA cm-2 for CuSCN. Key words: Dye Sensitized Solid State Solar Cells, Cyanidin, Anthurium, hole conductor. 1.

  20. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    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. 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. ...

  2. 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). ...

  3. 1 Rectangular Bunched Rutile TiO2 Nanorod Arrays Grown on Carbon 2 Fiber for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Wang, Zhong L.

    are fabricated by using etched TiO2 18 NR-coated CFs as the photoanode. An absolute energy 19 conversion for energy 21 harvesting and storage. 22 INTRODUCTION 23 The insufficient fossil-fuel-based energy supplies 30332, United States 6 State Key Laboratory of Physical Chemistry of Solid Surfaces, College

  4. Visible Light Water Splitting Using Dye-Sensitized Oxide Semiconductors

    E-Print Network [OSTI]

    - ical energy in the form of fuels. Hydrogen is a key solar fuel because it can be used directly- toelectrodes, molecular donor-acceptor systems linked to cat- alysts for hydrogen and oxygen evolution, and photovoltaic cells coupled directly or indirectly to electrocatalysts. Despite several decades of research

  5. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    cells by cooling and concentration techniques," inheat. Different techniques of cooling solar cells have been

  6. Heterojunction solar cell

    DOE Patents [OSTI]

    Olson, J.M.

    1994-08-30T23:59:59.000Z

    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.

  7. Heterojunction solar cell

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO)

    1994-01-01T23:59:59.000Z

    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.

  8. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    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.

  9. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    output electricity. Solar cells panels that employ opticalsurfaces such as the solar cell back panel and a heat panelbe shaped as a flat panel below a solar cells array with fin

  10. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

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

  11. Nanocrystal Solar Cells

    SciTech Connect (OSTI)

    Gur, Ilan

    2006-12-15T23:59:59.000Z

    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.

  12. Photovoltaic solar cell

    DOE Patents [OSTI]

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

    2013-11-26T23:59:59.000Z

    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.

  13. Photovoltaic solar cell

    DOE Patents [OSTI]

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

    2014-05-20T23:59:59.000Z

    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.

  14. Solar cell array interconnects

    DOE Patents [OSTI]

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

    1995-11-14T23:59:59.000Z

    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.

  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)

    1995-01-01T23:59:59.000Z

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

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

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

  17. 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

  18. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    is the ratio of the solar cell output power to the incidentmaximum power output at: The fill factor of a solar cell FFsolar cell temperature by about 15C, which increases the output power

  19. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

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

  20. 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

  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)

    2007-05-15T23:59:59.000Z

    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. Design and Charge-Transfer Properties of Bioinspired Electrets

    E-Print Network [OSTI]

    Bao, Duoduo

    2013-01-01T23:59:59.000Z

    dimethylformamide DSSC: dye-sensitized solar cells h-A-ph:solar cells, dye-sensitized solar cells (DSSC), and quantum-

  3. Monolithic tandem solar cell

    SciTech Connect (OSTI)

    Wanlass, M.W.

    1989-11-03T23:59:59.000Z

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

  4. Monolithic tandem solar cell

    SciTech Connect (OSTI)

    Wanlass, M.W.

    1991-05-28T23:59:59.000Z

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

  5. Monolithic tandem solar cell

    DOE Patents [OSTI]

    Wanlass, Mark W. (Golden, CO)

    1991-01-01T23:59:59.000Z

    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.

  6. Synthesis and Spectroscopy of Composite Semiconductor Nanomaterials

    E-Print Network [OSTI]

    Fitzmorris, Robert Carl

    2013-01-01T23:59:59.000Z

    F. ; Hodes, G. , Dye-sensitized Solar Cells: Principles ofGary Hodes, Dye-sensitized Solar Cells: Principles ofSilicon PV cells or dye sensitized solar cells can work in

  7. 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

  8. Hybrid Two-Dimensional Electronic Systems and Other Applications of sp-2 Bonded Light Elements

    E-Print Network [OSTI]

    Kessler, Brian Maxwell

    2010-01-01T23:59:59.000Z

    6 Nanotube Based Dye-Sensitized Solar Cells 6.1 History,Dye sensitized solar cell and power generationCharge conduction in dye-sensitized solar cell

  9. Regulatory Dynamics of Natural and Artificial Photosynthesis

    E-Print Network [OSTI]

    Zaks, Julia

    2012-01-01T23:59:59.000Z

    Dyes in Liquid Dye-Sensitized Solar Cells. ChemPhysChem 12,as sensitizers in dye-sensitized solar cells owing to theirA Dye for Efficient Dye-Sensitized Solar Cell. Chemistry of

  10. Synthesis of Cationic Extended Frameworks for Anion-Based Applications

    E-Print Network [OSTI]

    Fei, Honghan

    2012-01-01T23:59:59.000Z

    11 Solid-State Dye-Sensitized Solar Cells from Polymer11. Solid-State Dye-Sensitized Solar Cells from Polymerof Gratzel type dye-sensitized solar cells and the Honda

  11. Enzyme Mediated Synthesis of a Semiconducting Metal Oxide

    E-Print Network [OSTI]

    Johnson, John Michael

    2012-01-01T23:59:59.000Z

    1.3 Dye-sensitized solar cell... .4 Figureand electrodes in Dye-sensitized solar cells (DSSCs) 4 . TiOA schematic of a dye-sensitized solar cell (DSSC) based on

  12. Graphene and its Hybrid Nanostructures for Nanoelectronics and Energy Applications

    E-Print Network [OSTI]

    LIN, JIAN

    2011-01-01T23:59:59.000Z

    al. Nanowire dye-sensitized solar cells. Nature Materials,electrodes for dye-sensitized solar cells. Nano Letters,A) Schematic of dye-sensitized solar cell using graphene

  13. Thermal Transport in Nanoporous Materials for Energy Applications

    E-Print Network [OSTI]

    Fang, Jin

    2012-01-01T23:59:59.000Z

    principle of a dye-sensitized solar cell [2]. . . . . .42] M. Gr tzel, Dye-sensitized solar cells, Journal ofrecent progress in dye-sensitized solar cells, Advances in

  14. Thermal conductivity of highly-ordered mesoporous titania thin films from 30 to 320 K

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    state electrolyte for dye-sensitized solar cells by self-electrodes in dye-sensitized solar cells [3, 4] and as higha ef?ciency solar cell based on dye-sensitized colloidal TiO

  15. Graphene-based Material Systems for Nanoelectronics and Energy Storage Devices

    E-Print Network [OSTI]

    Guo, Shirui

    2012-01-01T23:59:59.000Z

    Electrodes for Dye-Sensitized Solar Cells" Nano LettersMore Efficient Dye-Sensitized Solar Cells by Deposition ofNanotube Arrays for Dye-Sensitized Solar Cells" Journal of

  16. Effective Optical Properties of Absorbing Nanoporous and Nanocomposite Thin-Films

    E-Print Network [OSTI]

    Garahan, Anna; Pilon, Laurent; Yin, Juan; Saxena, Indu

    2007-01-01T23:59:59.000Z

    a solid-state dye-sensitized solar cells, Thin Solid Films,cations include dye-sensitized solar cells [5, 6, 7], low-ke?ciency solar cell based on dye- sensitized colloidal TiO

  17. An extensive analysis of modified nanotube surfaces for next-generation orthopedic implants

    E-Print Network [OSTI]

    Frandsen, Christine Jeanette

    2012-01-01T23:59:59.000Z

    nanotube arrays in dye-sensitized solar cells. Nano Letters,for improved dye-sensitized solar cells. Journal ofJin. Enhancement of dye sensitized solar cell efficiency by

  18. Solution grown antimony doped zinc oxide films

    E-Print Network [OSTI]

    Riley, Conor T.

    2012-01-01T23:59:59.000Z

    D,; Nanowire dye-sensitized solar cells, Nat. Mater. 2005,three-dimensional dye-sensitized solar cells, Angew. Chem.photoelectrode in dye- sensitized solar cells, Cryst. Growth

  19. Fabrication and Characterization of Organic/Inorganic Photovoltaic Devices

    E-Print Network [OSTI]

    Guvenc, Ali Bilge

    2012-01-01T23:59:59.000Z

    solid-state dye-sensitized solar cells based on a metal-freeAbsorbing Dyes[70]: Dye-sensitized solar cells (DSSCs) arematerial. The dye-sensitized solar cell depends on a

  20. Solution Phase Routes to Functional Nanostructured Materials for Energy Applications

    E-Print Network [OSTI]

    Rauda, Iris Ester

    2012-01-01T23:59:59.000Z

    of Solid-State Dye-Sensitized Solar Cell Performance bySolid-State Dye-Sensitized Solar Cell with an Amphiphilicthe Performance of Dye-Sensitized Solar Cells by Co-Grafting

  1. Laser Assisted Nanomanufacturing with Solution Processed Nanoparticles for Low-cost Electronics and Photovoltaics

    E-Print Network [OSTI]

    Pan, Heng

    2009-01-01T23:59:59.000Z

    5.1 Introduction Dye-sensitized solar cells (DSSCs) are ato fabricate dye sensitized solar cells (DSSCs) on glass andof TiO 2 Nanoparticles for Dye Sensitized Solar Cells 5.1

  2. Nighttime solar cell

    SciTech Connect (OSTI)

    Parise, R.J.

    1998-07-01T23:59:59.000Z

    Currently photovoltaic (PV) cells convert solar energy into electrical energy at an efficiency of about 18%, with the maximum conversion rate taking place around noon on a cloudless day. In many applications, the PV cells are utilized to recharge a stand-by battery pack that provides electrical energy at night or on cloudy days. Increasing the utilization of the panel array area by producing electrical power at night will reduce the amount of required electrical energy storage for a given array size and increase system reliability. Thermoelectric generators (TEG) are solid state devices that convert thermal energy into electrical energy. Using the nighttime sky, or deep space, with an effective temperature of 3.5 K as a cold sink, the TEG presented here can produce electrical power at night. The hot junction is supplied energy by the ambient air temperature or some other warm temperature source. The cold junction of the TEG is insulated from the surroundings by a vacuum cell, improving its overall effectiveness. Combining the TEG with the PV cell, a unique solid state device is developed that converts electromagnetic radiant energy into usable electrical energy. The thermoelectric-photovoltaic (TEPV) cell, or the Nighttime Solar Cell, is a direct energy conversion device that produces electrical energy both at night and during the day.

  3. High efficiency, radiation-hard solar cells

    E-Print Network [OSTI]

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

    2004-01-01T23:59:59.000Z

    Solar Energy Mat. and Solar Cells 75, 261-9 (2003) andD. J. , Advanced Space Solar Cells, Prog. Photovolt: Res.Igari, and W. Warta, Solar Cell Efficiency Tables (Version

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

    E-Print Network [OSTI]

    Romeo, Alessandro

    2007-01-01T23:59:59.000Z

    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

  5. Superlattice cascade solar cell

    SciTech Connect (OSTI)

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

    1982-09-01T23:59:59.000Z

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

  6. Solar cell module lamination process

    DOE Patents [OSTI]

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

    2002-01-01T23:59:59.000Z

    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.

  7. Iron, Manganese and Ruthenium Metal Carbonyls as Photoactive Carbon Monoxide Releasing Molecules (photoCORMS): Ligand Design Strategies, Syntheses and Structure Characterizations

    E-Print Network [OSTI]

    Gonzales, Margarita Andal

    2013-01-01T23:59:59.000Z

    15 , components of dye-sensitized solar cells 16 and ion-components in dye-sensitized solar cells. 2-4 When carbon

  8. Studies of Block Copolymer Thin Films and Mixtures with an Ionic Liquid

    E-Print Network [OSTI]

    Virgili, Justin

    2009-01-01T23:59:59.000Z

    based natural materials, 4 dye-sensitized solar cells, 5 andcells, 4-8 and dye-sensitized solar cells. 9-12 While the

  9. Semiconductor Nanowires and Nanotubes for Energy Conversion

    E-Print Network [OSTI]

    Fardy, Melissa Anne

    2010-01-01T23:59:59.000Z

    al. , Nanowire dye-sensitized solar cells. Nature Materials,shown for ZnO dye-sensitized solar cells, which are also PEC

  10. 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...

  11. Monolithic tandem solar cell

    SciTech Connect (OSTI)

    Wanlass, Mark W. (Golden, CO)

    1994-01-01T23:59:59.000Z

    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.

  12. Monolithic tandem solar cell

    DOE Patents [OSTI]

    Wanlass, M.W.

    1994-06-21T23:59:59.000Z

    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.

  13. 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

  14. The challenges of organic polymer solar cells

    E-Print Network [OSTI]

    Saif Addin, Burhan K. (Burhan Khalid)

    2011-01-01T23:59:59.000Z

    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 ...

  15. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01T23:59:59.000Z

    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

  16. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    Wrfel 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.

  17. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    WrfelP. Physicsofsolarcells:fromprinciplestonewgeneration photovoltaics: solar cells for 2020 andSpitzer MB. INDIUM?PHOSPHIDE SOLAR?CELLS MADE BY ION?

  18. 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

  19. 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...

  20. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    improving efficiencies of solar photovoltaic technologies.quantum efficiency (EQE) of the associated photovoltaic

  1. area solar cells: Topics by E-print Network

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

    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:...

  2. aluminium arsenide solar cells: Topics by E-print Network

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

    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:...

  3. Bulb mounting of solar cell

    SciTech Connect (OSTI)

    Thompson, M.E.

    1983-04-05T23:59:59.000Z

    An energy converting assembly is provided for parasiting of light from a fluorescent light bulb utilizing a solar cell. The solar cell is mounted on a base member elongated in the dimension of elongation of the fluorescent bulb, and electrical interconnections to the cell are provided. A flexible sheet of opaque material having a flat white interior reflective surface surrounds the fluorescent bulb and reflects light emitted from the bulb back toward the bulb and the solar cell. The reflective sheet is tightly held in contact with the bottom of the bulb by adhesive, a tie strap, an external clip, or the like.

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

    E-Print Network [OSTI]

    Romeo, Alessandro

    2006-01-01T23:59:59.000Z

    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

  5. artery harvest increase: Topics by E-print Network

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

    Shepherd, John 9 Increased light harvesting in dye-sensitized solar cells with energy relay dyes Materials Science Websites Summary: factors. However, dye-sensitized solar...

  6. 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...

  7. Module level solutions to solar cell polarization

    DOE Patents [OSTI]

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

    2012-05-29T23:59:59.000Z

    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.

  8. Nanowire-based All Oxide Solar Cells

    E-Print Network [OSTI]

    Yang, Peidong

    2009-01-01T23:59:59.000Z

    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,

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

    E-Print Network [OSTI]

    Dowling, Jonathan P.

    Solar Energy Materials & Solar Cells 91 (2007) 1599­1610 Improving solar cell efficiency using) solar energy conversion systems (or solar cells) are the most widely used power systems. However and reliable solar-cell devices is presented. We show that due their ability to modify the spectral and angular

  10. 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

  11. 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

    2013-12-24T23:59:59.000Z

    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.

  12. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    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

  13. Current Titles

    E-Print Network [OSTI]

    Various

    2006-01-01T23:59:59.000Z

    inorganic and dye-sensitized cells (DSCs)-are promisingversion of the dye-sensitized cell in which the traditionalfashion. Nanowire Dye-sensitized Solar Cells M. Law, L. E.

  14. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01T23:59:59.000Z

    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

  15. Solar-Hydrogen Fuel-Cell Vehicles

    E-Print Network [OSTI]

    DeLuchi, Mark A.; Ogden, Joan M.

    1993-01-01T23:59:59.000Z

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

  16. 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

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

    E-Print Network [OSTI]

    Schiff, Eric A.

    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

  18. Nanoscale Simulations Research Profile

    E-Print Network [OSTI]

    in fields such as aqueous chemistry, computational electro-chemistry, and dye sensitized solar cells

  19. Chemistry Department 2013 Summer Research Program

    E-Print Network [OSTI]

    (PMDs). Such devices include dye sensitized solar cells (DSSCs), organic light emitting diodes (OLEDs

  20. An Ab Initio Study of Lithium Diffusion in Titanium Disulfide Kevin Tibbetts,* Caetano R. Miranda, Ying S. Meng, and Gerbrand Ceder

    E-Print Network [OSTI]

    Ceder, Gerbrand

    as electron collectors in dye-sensitized solar cells,16 and have even displayed photoluminescence properties

  1. Chemistry Department 2012 Summer Research Program

    E-Print Network [OSTI]

    (PMDs). Such devices include dye sensitized solar cells (DSSCs), organic light emitting diodes (OLEDs

  2. Summer 2014 Invitation for

    E-Print Network [OSTI]

    sensors, light emitting diodes, and dye sensitized solar cells. John Wheeler: developing novel strategies

  3. 2011 Annual Report On the cover: Researchers at Oregon State

    E-Print Network [OSTI]

    Tullos, Desiree

    primarily focuses on high surface area nanosensors and dye-sensitized solar cells. Professor Greg Herman

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

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01T23:59:59.000Z

    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,

  5. Berkeley Lab Sheds Light on Improving Solar Cell Efficiency

    E-Print Network [OSTI]

    Lawrence Berkeley National Laboratory

    2007-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Briseno, Alejandro L.

    2010-01-01T23:59:59.000Z

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

  7. 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...

  8. 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

  9. 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

  10. Development of concentrator solar cells

    SciTech Connect (OSTI)

    Not Available

    1994-08-01T23:59:59.000Z

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

  11. Advanced Materials and Nano Technology for Solar Cells

    E-Print Network [OSTI]

    Han, Tao

    2014-01-01T23:59:59.000Z

    Solar Energy Materials and Solar Cells 93.6 (2009): 670-673.1-3: The structure diagram of c-Si solar cell and HIT solarof flexible CIGS solar cells and modules." Solar Energy

  12. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

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

  13. 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...

  14. Key Physical Mechanisms in Nanostructured Solar Cells

    SciTech Connect (OSTI)

    Dr Stephan Bremner

    2010-07-21T23:59:59.000Z

    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.

  15. 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

  16. 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.

  17. Process of making solar cell module

    DOE Patents [OSTI]

    Packer, M.; Coyle, P.J.

    1981-03-09T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01T23:59:59.000Z

    Monocrystalline silicon solar cells, polycrystalline silicon solar cells, and amorphous silicon (thin-film) solar

  19. 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

  20. 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

  1. Accurate performance measurement of silicon solar cells

    E-Print Network [OSTI]

    accuracy. The light source is very important when calibrating solar cells. Commonly used light sourcesAccurate 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

  2. Nanowire-based All Oxide Solar Cells

    E-Print Network [OSTI]

    Yang, Peidong

    2009-01-01T23:59:59.000Z

    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

  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 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

  4. 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

  5. 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

  6. 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

  7. 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...

  8. Ames Lab 101: Improving Solar Cell Efficiency

    ScienceCinema (OSTI)

    Biswas, Rana

    2012-08-29T23:59:59.000Z

    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.

  9. Mixed ternary heterojunction solar cell

    DOE Patents [OSTI]

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

    1992-08-25T23:59:59.000Z

    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.

  10. Temperature Independence of the Photoinduced Electron Injection in Dye-Sensitized TiO2 Rationalized by Ab Initio

    E-Print Network [OSTI]

    -sensitized semiconductor solar cell (DSSC),alsoknownastheGratzelcell.1 Manyexperimentalists115 and theoreticians2 The conversion of solar energy into an electric current in the DSSC starts with the photoexcitation

  11. 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 1657wileyonlinelibrary.com www.MaterialsViews.com

    E-Print Network [OSTI]

    McGehee, Michael

    -State Dye-Sensitized Solar Cells George Y. Margulis, M. Greyson Christoforo, David Lam, Zach M. Beiley-state dye-sensitized solar cells[1,2] (ssDSCs) have been developed as a stable alternative to dye-sensitized for solid-state dye-sensitized solar cells (ssDSCs) allow for fabrication of mechanically stacked ss

  12. 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 1wileyonlinelibrary.com www.MaterialsViews.com

    E-Print Network [OSTI]

    McGehee, Michael

    -State Dye-Sensitized Solar Cells George Y. Margulis, M. Greyson Christoforo, David Lam, Zach M. Beiley-state dye-sensitized solar cells[1,2] (ssDSCs) have been developed as a stable alternative to dye-sensitized for solid-state dye-sensitized solar cells (ssDSCs) allow for fabrication of mechanically stacked ss

  13. 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

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

    E-Print Network [OSTI]

    del Alamo, Jesús A.

    . 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

  15. Synthesis, characterization, and exciton dynamics of II-VI semiconducting nanomaterials and ab-initio studies for applications in explosives sensing

    E-Print Network [OSTI]

    Cooper, Jason Kyle

    2013-01-01T23:59:59.000Z

    P. , "Nanowire dye- sensitized solar cells," Nat. Mater. 4(and dye or quantum dot sensitized solar cells. On the

  16. Enzyme Mediated Synthesis of a Semiconducting Metal Oxide

    E-Print Network [OSTI]

    Johnson, John Michael

    2012-01-01T23:59:59.000Z

    sensitized solar cell (DSSC) based on Gratzels pioneeringa dye-sensitized solar cell (DSSC). semiconducting material

  17. Three-junction solar cell

    DOE Patents [OSTI]

    Ludowise, Michael J. (Cupertino, CA)

    1986-01-01T23:59:59.000Z

    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.

  18. 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)

    2012-03-13T23:59:59.000Z

    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.

  19. Solar Cell Modules With Improved Backskin

    DOE Patents [OSTI]

    Gonsiorawski, Ronald C. (Danvers, MA)

    2003-12-09T23:59:59.000Z

    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.

  20. Very High Efficiency Solar Cell Modules

    SciTech Connect (OSTI)

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

    2009-01-01T23:59:59.000Z

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

  1. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    MA. Third generation photovoltaics: solar cells for 2020 andNS. Organic photovoltaics : mechanisms, materials, andtables (Version 27). Prog Photovoltaics. 2006;14(1):45-51.

  2. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    York: Wiley; 1998. Short circuit current of a solar cell [circuit voltage, short circuit current and maximum powerinterface. (ii) Short circuit current (I sc ); In the ideal

  3. 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.

  4. The Effects of 100 nmThe Effects of 100 nm--DiameterDiameterThe Effects of 100 nmThe Effects of 100 nm--DiameterDiameter Au Nanoparticles onAu Nanoparticles onAu Nanoparticles onAu Nanoparticles onpp

    E-Print Network [OSTI]

    Park, Byungwoo

    DyeDye--Sensitized Solar CellsSensitized Solar Cells pp DyeDye--Sensitized Solar CellsSensitized Solar of photovoltaic properties. #12;Introduction: Dye-Sensitized Solar Cells (DSSCs) e-e- Au-SiO2 Core Solar Cell> I: Light Intensity E: Amplitude of E-Field [H

  5. Improved monolithic tandem solar cell

    SciTech Connect (OSTI)

    Wanlass, M.W.

    1991-04-23T23:59:59.000Z

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

  6. 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistmaSinosteel CorporationSocovoltaicSolaer saSolar Cells Jump

  7. Current and lattice matched tandem solar cell

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO)

    1987-01-01T23:59:59.000Z

    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.

  8. Front contact solar cell with formed emitter

    DOE Patents [OSTI]

    Cousins, Peter John

    2014-11-04T23:59:59.000Z

    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.

  9. Front contact solar cell with formed emitter

    DOE Patents [OSTI]

    Cousins, Peter John (Menlo Park, CA)

    2012-07-17T23:59:59.000Z

    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.

  10. High-Efficiency, Self-Concentrating Nanoscale Solar Cell - Energy...

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

    Solar Photovoltaic Solar Photovoltaic Find More Like This Return to Search High-Efficiency, Self-Concentrating Nanoscale Solar Cell Lawrence Berkeley National Laboratory Contact...

  11. Method for processing silicon solar cells

    DOE Patents [OSTI]

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

    1997-01-01T23:59:59.000Z

    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.

  12. Method for processing silicon solar cells

    DOE Patents [OSTI]

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

    1997-05-06T23:59:59.000Z

    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.

  13. Enhancing solar cells with plasmonic nanovoids

    E-Print Network [OSTI]

    Lal, Niraj Narsey

    2012-07-03T23:59:59.000Z

    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...

  14. Effective Optical Properties of Highly Ordered Mesoporous Thin Films

    E-Print Network [OSTI]

    Hutchinson, Neal J.; Coquil, Thomas; Navid, Ashcon; Pilon, Laurent

    2010-01-01T23:59:59.000Z

    a solid-state dye-sensitized solar cells, Thin Solid Films,tions include dye-sensitized solar cells [8 10], low-ke?ciency solar cell based on dye- a sensitized colloidal

  15. Science and Technology of Future Light Sources

    E-Print Network [OSTI]

    Bergmann, Uwe

    2009-01-01T23:59:59.000Z

    dye-sensitized solar cell (DSSC). [Source: Michael Graetzel,is a dye- sensitized solar cell (DSSC) shown in Figure 3.6.In the DSSC (also known as Graetzel cell), solar photons are

  16. Design and Charge-Transfer Properties of Bioinspired Electrets

    E-Print Network [OSTI]

    Bao, Duoduo

    2013-01-01T23:59:59.000Z

    Cl 2 DMF: dimethylformamide DSSC: dye-sensitized solar cellssensitized solar cells (DSSC), and quantum-dot-sensitized

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

    E-Print Network [OSTI]

    Leow, Shin Woei

    2014-01-01T23:59:59.000Z

    enhancing the efficiency of solar cells and extending theirA. J. Nozik, Quantum dot solar cells, Phys. E Low-Dimens.oxide PbS quantum dot solar cells at low temperature, Appl.

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

    E-Print Network [OSTI]

    Leow, Shin Woei

    2014-01-01T23:59:59.000Z

    1.6 Schematic of a solar panel with PV cells connected inand installation cost of solar panels and enhance PV cell1.6 Schematic of a solar panel with PV cells connected in

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

    E-Print Network [OSTI]

    Reusswig, Philip David

    2014-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01T23:59:59.000Z

    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.

  1. Highly Mismatched Alloys for Intermediate Band Solar Cells

    E-Print Network [OSTI]

    2005-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01T23:59:59.000Z

    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

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

    E-Print Network [OSTI]

    Ager, Joel W

    2011-01-01T23:59:59.000Z

    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

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

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01T23:59:59.000Z

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

  5. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01T23:59:59.000Z

    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.

  6. Quantum Junction Solar Cells Jiang Tang,,

    E-Print Network [OSTI]

    Quantum Junction Solar Cells Jiang Tang,, Huan Liu,, David Zhitomirsky, Sjoerd Hoogland, Xihua, 1037 Luoyu Road, Wuhan, Hubei 430074, China Department of Electrical and Computer Engineering-type and p-type materials to create the first quantum junction solar cells. We present a family

  7. Nanowire-based All Oxide Solar Cells

    SciTech Connect (OSTI)

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

    2008-12-07T23:59:59.000Z

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

  8. Advanced Materials and Nano Technology for Solar Cells

    E-Print Network [OSTI]

    Han, Tao

    2014-01-01T23:59:59.000Z

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

  9. New Morphological Paradigm Uncovered in Organic Solar Cells

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

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

  10. Hybrid Solar Cells via UV Polymerization of Polymer Precursor...

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

    Solar Cells via UV Polymerization of Polymer Precursor Technology available for licensing: A method to create improved hybrid solar cells through the ultraviolet (UV)...

  11. 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...

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

    E-Print Network [OSTI]

    splitting system based on oxyni- tride semiconductor particles.4 In comparison, progress on overall water the heteroleptic ruthenium dye 1 to serve as both a sensitizer component and a molecular bridge to connect IrO2 nH2O particles to a metal oxide semiconductor. Phosphonates are chemically selective for TiO2

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

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01T23:59:59.000Z

    Monocrystalline silicon solar cells, polycrystalline silicon solar cells, and amorphous silicon (thin-film)

  14. Bypass diode for a solar cell

    DOE Patents [OSTI]

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

    2013-11-12T23:59:59.000Z

    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.

  15. Heterojunction solar cell with passivated emitter surface

    DOE Patents [OSTI]

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

    1994-05-31T23:59:59.000Z

    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.

  16. Heterojunction solar cell with passivated emitter surface

    DOE Patents [OSTI]

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

    1994-01-01T23:59:59.000Z

    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.

  17. Indium oxide/n-silicon heterojunction solar cells

    DOE Patents [OSTI]

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

    1982-12-28T23:59:59.000Z

    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%.

  18. Enzyme Mediated Synthesis of a Semiconducting Metal Oxide

    E-Print Network [OSTI]

    Johnson, John Michael

    2012-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Romeo, Alessandro

    * Corresponding author. Solar Energy Materials & Solar Cells 58 (1999) 209}218 A highly e$cient and stable CdTe/CdS thin "lm solar cell N. Romeo, A. Bosio, R. Tedeschi*, A. Romeo, V. Canevari Dipartimento$cient and stable CdTe/CdS thin "lm solar cells. Our cells are prepared in three subsequent phases. Firstly, we

  20. 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

  1. High efficiency, radiation-hard solar cells

    E-Print Network [OSTI]

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

    2004-01-01T23:59:59.000Z

    J. F. Geisz, Superior radiation resistance of In 1-x Ga x Nand H. Itoh, Proton radiation analysis of multi-junction56326 High efficiency, radiation-hard solar cells Final

  2. Rational design of hybrid organic solar cells

    E-Print Network [OSTI]

    Lentz, Levi (Levi Carl)

    2014-01-01T23:59:59.000Z

    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. ...

  3. Colloidal cluster phases and solar cells

    E-Print Network [OSTI]

    Mailer, Alastair George

    2012-11-28T23:59:59.000Z

    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 ...

  4. Texturization of multicrystalline silicon solar cells

    E-Print Network [OSTI]

    Li, Dai-Yin

    2010-01-01T23:59:59.000Z

    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 ...

  5. Quantum Coaxial Cables for Solar Energy Harvesting

    SciTech Connect (OSTI)

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

    2007-01-01T23:59:59.000Z

    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.

  6. Ion Transport in Nanostructured Block Copolymer/Ionic Liquid Membranes

    E-Print Network [OSTI]

    Hoarfrost, Megan Lane

    2012-01-01T23:59:59.000Z

    14-18 fuel cells, 19-26 dye-sensitized solar cells, 27, 28batteries or dye-sensitized solar cells. 57, 58 PVdF-co-PHFP

  7. 1Electromaterials and Nanomaterials Group Prof. Byungwoo Park

    E-Print Network [OSTI]

    Park, Byungwoo

    for Energy #12;Quantum-Dot- and Dye-Sensitized Solar Cells Prototype dye-sensitized solar cell panel from SONY Dye-sensitized solar cells from KIST #12;4Electromaterials and Nanomaterials Group e-e- h Working Principles of Sensitized Solar Cells #12;5Electromaterials and Nanomaterials Group

  8. Limit of light coupling into solar cells

    E-Print Network [OSTI]

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

    2013-01-01T23:59:59.000Z

    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.

  9. Plastic Schottky-barrier solar cells

    DOE Patents [OSTI]

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

    1981-12-30T23:59:59.000Z

    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.

  10. Nanoparticle Solar Cell Final Technical Report

    SciTech Connect (OSTI)

    Breeze, Alison, J; Sahoo, Yudhisthira; Reddy, Damoder; Sholin, Veronica; Carter, Sue

    2008-06-17T23:59:59.000Z

    The purpose of this work was to demonstrate all-inorganic nanoparticle-based solar cells with photovoltaic performance extending into the near-IR region of the solar spectrum as a pathway towards improving power conversion efficiencies. The field of all-inorganic nanoparticle-based solar cells is very new, with only one literature publication in the prior to our project. Very little is understood regarding how these devices function. Inorganic solar cells with IR performance have previously been fabricated using traditional methods such as physical vapor deposition and sputtering, and solution-processed devices utilizing IR-absorbing organic polymers have been investigated. The solution-based deposition of nanoparticles offers the potential of a low-cost manufacturing process combined with the ability to tune the chemical synthesis and material properties to control the device properties. This work, in collaboration with the Sue Carter research group at the University of California, Santa Cruz, has greatly expanded the knowledge base in this field, exploring multiple material systems and several key areas of device physics including temperature, bandgap and electrode device behavior dependence, material morphological behavior, and the role of buffer layers. One publication has been accepted to Solar Energy Materials and Solar Cells pending minor revision and another two papers are being written now. While device performance in the near-IR did not reach the level anticipated at the beginning of this grant, we did observe one of the highest near-IR efficiencies for a nanoparticle-based solar cell device to date. We also identified several key parameters of importance for improving both near-IR performance and nanoparticle solar cells in general, and demonstrated multiple pathways which showed promise for future commercialization with further research.

  11. ZnO Nanocoral Structures for Photoelectrochemical Cells

    SciTech Connect (OSTI)

    Ahn, K. S.; Yan, Y.; Shet, S.; Jones, K.; Deutsch, T.; Turner, J.; Al-Jassim, M.

    2008-01-01T23:59:59.000Z

    We report on synthesis of a uniform and large area of a new form of ZnO nanocorals. These nanostructures can provide suitable electrical pathways for efficient carrier collection as well as large surface areas for the photoelectrochemical (PEC) cells. PEC devices made from these ZnO nanocoral structures demonstrate significantly enhanced photoresponse as compared to ZnO compact and nanorod films. Our results suggest that the nanocoral structures could be an excellent choice for nanomaterial-based applications such as dye-sensitized solar cells, electrochromic windows, and batteries.

  12. 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

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

    E-Print Network [OSTI]

    Anderson, Timothy J.

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

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

    E-Print Network [OSTI]

    Woodall, Jerry M.

    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

  15. 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#12;Questions I will answer · What is a solar cell? · How are solar cells are solar cells made? · How do they work? · How efficient can they be? · How

  16. Sandia National Laboratories: high-efficiency solar cells

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

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

  17. NANO: Brief Reports and Reviews Vol. 3, No. 1 (2008) 2736

    E-Print Network [OSTI]

    Brown, Eric

    in materials science, energy science related to dye-sensitized solar cells, environmental science as well component of dye-sensitized solar cells capa- ble of converting sunlight into chemical energy.5 In all on dye-sensitized solar cells has demonstrated that organized, orderly TiO2 nanoparticles increase solar

  18. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, Aaron S. (Broomall, PA)

    1985-01-01T23:59:59.000Z

    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.

  19. Method of restoring degraded solar cells

    DOE Patents [OSTI]

    Staebler, D.L.

    1983-02-01T23:59:59.000Z

    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.

  20. Method of restoring degraded solar cells

    DOE Patents [OSTI]

    Staebler, David L. (Lawrenceville, NJ)

    1983-01-01T23:59:59.000Z

    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.

  1. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, A.S.

    1983-12-08T23:59:59.000Z

    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.

  2. 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)

    1982-01-01T23:59:59.000Z

    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.

  3. 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

    2006-01-01T23:59:59.000Z

    of Multijunction Solar Cell Performance in RadiationIgari, and W. Warta, Solar Cell Efficiency Tables (Versionof Multijunction Solar Cell Performance in Radiation

  4. Air stable all-inorganic nanocrystal solar cells processed from solution

    E-Print Network [OSTI]

    Gur, Ilan; Fromer, Neil A.; Geier, Michael L.; Alivisatos, A. Paul

    2005-01-01T23:59:59.000Z

    Bube, Fundamentals of Solar Cells (Academic Press, New York,of organic based solar cells and distinguish them from theirinorganic nanocrystal solar cells processed from solution

  5. Achieving High Performance Polymer Tandem Solar Cells via Novel Materials Design

    E-Print Network [OSTI]

    Dou, Letian

    2014-01-01T23:59:59.000Z

    polymers for organic solar cell applications. Chem. Rev.Hummelen, J. C. , Plastic solar cells. Adv. Funct. Mater.polymer design for tandem solar cells and achieved certified

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

    E-Print Network [OSTI]

    Deceglie, Michael G

    2014-01-01T23:59:59.000Z

    Energy Materials and Solar Cells 39. Spinelli, J. , The physics of solar cells. Imperial College Si wire array solar cells, Proceeding of the

  7. 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

    2006-01-01T23:59:59.000Z

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

  8. 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...

  9. Fabricating solar cells with silicon nanoparticles

    DOE Patents [OSTI]

    Loscutoff, Paul; Molesa, Steve; Kim, Taeseok

    2014-09-02T23:59:59.000Z

    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.

  10. Fundamental limit of nanophotonic light trapping in solar cells

    E-Print Network [OSTI]

    Fan, Shanhui

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

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

    E-Print Network [OSTI]

    Kaiser, Todd J.

    ;3 Screen Printed Solar Cells · Firing the contacts ­ The furnace heats the cell to a high temperature by Efficiency 22 Rear Panel before Lamination 23 Buried Contact Solar Cells · High Efficiency · Laser groved1 EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques Dr. Todd J. Kaiser

  12. To link to this article : DOI:10.1039/c2ra21645k URL : http://dx.doi.org/10.1039/c2ra21645k

    E-Print Network [OSTI]

    Boyer, Edmond

    to develop a wide range of applications concerning these components, for example, dye-sensitized solar cells

  13. Nanotechnology and Advanced Materials Graduate Student Talent Series

    E-Print Network [OSTI]

    Gilchrist, James F.

    include efficiency enhancement in dye sensitized solar cell (DSSC) with microlens arrays. 12:40-1:10 p

  14. 1Electromaterials and Nanomaterials Group Prof. Byungwoo Park

    E-Print Network [OSTI]

    Park, Byungwoo

    for Energy #12;Quantum-Dot- and Dye-Sensitized Solar Cells DSSC SONY DSSC KIST #12;4Electromaterials

  15. Sum frequency generation study on the orientation of room-temperature ionic liquid at the grapheneionic liquid interface

    E-Print Network [OSTI]

    Bao, Jiming

    such as dye-sensitized solar cells and super capacitors, room-temperature ionic liquids are considered

  16. Applied Surface Science 268 (2013) 8791 Contents lists available at SciVerse ScienceDirect

    E-Print Network [OSTI]

    Pandey, Ravi

    such as dye-sensitized solar cell [5], their fabrication and characterization have been per- formed by several

  17. 2007 2 8 ( )-9 ( ) / Layer Deposition

    E-Print Network [OSTI]

    Hwang, Sung Woo

    of Branched Structure ZnO Nanowires for Use in Dye- Sensitized Solar Cell Applications : , >), 4, UF

  18. IOP PUBLISHING NANOTECHNOLOGY Nanotechnology 20 (2009) 264012 (8pp) doi:10.1088/0957-4484/20/26/264012

    E-Print Network [OSTI]

    Grütter, Peter

    of both inorganic structures [6, 7] and model dye-sensitized solar cell materials [8, 9]. In many cases

  19. Enhanced optical absorption due to symmetry breaking in TiO2(1-x)S2x alloys

    E-Print Network [OSTI]

    of photovoltaics or photocatalysis it is used in dye-sensitized solar cells3 and has great potential for water

  20. Enhanced Optical Absorption Due to Symmetry Breaking in TiO2(1-x)S2x Alloys

    E-Print Network [OSTI]

    of photovoltaics or photocatalysis, it is used in dye-sensitized solar cells3 and has great potential for water

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

    E-Print Network [OSTI]

    Deceglie, Michael G.

    2014-01-01T23:59:59.000Z

    silicon thin film solar cells," Solar Energy, vol. 77, pp.nano-crystalline silicon nip solar cells," Solar EnergyMaterials and Solar Cells, vol. 93, pp. H. Sakai, T.

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

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01T23:59:59.000Z

    for the improvement of CdTe solar cells, Solar EnergySolar Energy Materials and Solar Cells, vol. 93, no. 4, pp.Materials and Solar Cells, vol. 95, no. 3, pp. 816820, Mar.

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

    E-Print Network [OSTI]

    Kang, Jin Sung

    2012-01-01T23:59:59.000Z

    Solar Energy Materials and Solar Cells, vol. 93, 2009, pp.Solar energy materials and solar cells, vol. 91, 2007, pp.to integrate thin-film solar cells and batteries (2)

  4. Semiconductor-Based Interfacial Electron-Transfer Reactivity: Decoupling Kinetics from pH-Dependent Band Energetics in a Dye-Sensitized Titanium Dioxide/Aqueous Solution

    E-Print Network [OSTI]

    H-Dependent Band Energetics in a Dye-Sensitized Titanium Dioxide/Aqueous Solution System Susan G. Yan and Joseph T energy of the electron in the electrode). The observed insensitivity to large changes in band-functionalized ruthenium bipyridyl complexes to- gether with high-area nanocrystalline titanium dioxide films.2

  5. Multi-junction solar cell device

    DOE Patents [OSTI]

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

    2007-12-18T23:59:59.000Z

    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.

  6. Flexible implementation of rigid solar cell technologies.

    SciTech Connect (OSTI)

    Hollowell, Andrew E.

    2010-08-01T23:59:59.000Z

    As a source of clean, remote energy, photovoltaic (PV) systems are an important area of research. The majority of solar cells are rigid materials with negligible flexibility. Flexible PV systems possess many advantages, such as being transportable and incorporable on diverse structures. Amorphous silicon and organic PV systems are flexible; however, they lack the efficiency and lifetime of rigid cells. There is also a need for PV systems that are light weight, especially in space and flight applications. We propose a solution to this problem by arranging rigid cells onto a flexible substrate creating efficient, light weight, and flexible devices. To date, we have created a working prototype of our design using the 1.1cm x 1cm Emcore cells. We have achieved a better power to weight ratio than commercially available PowerFilm{reg_sign}, which uses thin film silicon yielding .034W/gram. We have also tested our concept with other types of cells and verified that our methods are able to be adapted to any rigid solar cell technology. This allows us to use the highest efficiency devices despite their physical characteristics. Depending on the cell size we use, we can rival the curvature of most available flexible PV devices. We have shown how the benefits of rigid solar cells can be integrated into flexible applications, allowing performance that surpasses alternative technologies.

  7. High throughput solar cell ablation system

    DOE Patents [OSTI]

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

    2012-09-11T23:59:59.000Z

    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.

  8. Solar cell contact formation using laser ablation

    DOE Patents [OSTI]

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

    2014-07-22T23:59:59.000Z

    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.

  9. High throughput solar cell ablation system

    DOE Patents [OSTI]

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

    2014-10-14T23:59:59.000Z

    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.

  10. Solar cell contact formation using laser ablation

    DOE Patents [OSTI]

    Harley, Gabriel; Smith, David; Cousins, Peter

    2012-12-04T23:59:59.000Z

    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.

  11. 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 Coalition By Frank Vignola University of Oregon Solar Radiation Monitoring Lab John Hocken South Eugene High School Gary Grace South Eugene High School In Schools #12;1 Solar Cells Lesson Plan Content

  12. Electrical overstress failure in silicon solar cells

    SciTech Connect (OSTI)

    Pease, R.L.; Barnum, J.R.; van Lint, V.A.J.; Vulliet, W.V.; Wrobel, T.F.

    1982-11-01T23:59:59.000Z

    A solar-cell electrical-overstress-failure model and the results of experimental measurements of threshold pulsed failure currents on four types of silicon solar cells are presented. The transient EMP field surrounding a lightning stroke has been identified as a potential threat to a photovoltaic array, yet failure analysis of solar cells in a pulsed environment had not previously been reported. Failure in the low-resistivity concentrator cells at pulse widths between 1 ..mu..s and 1 ms occurred initially in the junction. Finger damage in the form of silver melting occurs at currents only slightly greater than that required for junction damage. The result of reverse-bias transient-overstress tests on high-resistivity (10 ..cap omega..cm) cells demonstrated that the predominant failure mode was due to edge currents. These flat-plate cells failed at currents of only 4 to 20 A, which is one or two orders of magnitude below the model predictions. It thus appears that high-resistivity flat-plate cells are quite vulnerable to electrical overstress which could be produced by a variety of mechanisms.

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

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

    E-Print Network [OSTI]

    Atwater, Harry

    Solar cell efficiency enhancement via light trapping in printable resonant dielectric nanospherederale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin Film Electronics, photovoltaics, resonant dielectric structures, solar cells * Corresponding author: e-mail jgrandid

  15. 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...

  16. High temperature investigations of crystalline silicon solar cell materials

    E-Print Network [OSTI]

    Hudelson, George David Stephen, III

    2009-01-01T23:59:59.000Z

    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. ...

  17. Published: July 05, 2011 r 2011 American Chemical Society 3214 dx.doi.org/10.1021/nl2014845 |Nano Lett. 2011, 11, 32143220

    E-Print Network [OSTI]

    Lin, Zhiqun

    Lett. 2011, 11, 3214­3220 LETTER pubs.acs.org/NanoLett High Efficiency Dye-Sensitized Solar Cells BasedS Supporting Information Dye-sensitized solar cells (DSSCs) are widely recognized as a promising alternative,8,27 Herein, we report high efficiency dye-sensitized nanotube solar cells in a backside illumination mode

  18. 959wileyonlinelibrary.com www.MaterialsViews.com

    E-Print Network [OSTI]

    McGehee, Michael

    Efficiency Measurements of Solid-State Dye Sensitized Solar Cells G. Y. Margulis Department of Applied Recently, there has been a flurry of research interest in solid- state dye sensitized solar cells (ss processing conditions.[1­7] While dye sensitized solar cells based on a liquid electrolyte have reached

  19. Delivered by Ingenta to: Southeast University

    E-Print Network [OSTI]

    Cao, Guozhong

    Temperature on the Performances and Electrochemical Properties of TiO2 Dye-Sensitized Solar Cells Junting Xi1-crystallized TiO2 photoelectrodes of dye-sensitized solar cells have been systematically investigated. Although-treated at temperatures ranging from 350 C to 600 C. KEYWORDS: Dye-Sensitized Solar Cells, Annealing Temperature

  20. University of New Orleans/ Advanced Materials Research

    E-Print Network [OSTI]

    Pennycook, Steve

    solar cells. Their synthesis, characterization and application as photoanode materials in dye sensitized of sciences research award to fund the proposal on making efficient dye sensitized solar cells by plasmonic Core-Shell Metal-Metal Oxide 3D Nanoarchitectures for Dye Sensitized Solar Cells, Gordon Research

  1. LEIJTENS ET AL. VOL. 6 ' NO. 2 ' 14551462 ' 2012 www.acsnano.org

    E-Print Network [OSTI]

    McGehee, Michael

    Solubility for Application in Solid-State Dye-Sensitized Solar Cells Tomas Leijtens, I-Kang Ding, Tommaso) for application in solid-state dye-sensitized solar cells (ssDSSCs). In addition to possessing electrical-efficiency ssDSSCs. KEYWORDS: organic photovoltaics . solid-state dye-sensitized solar cells . organic hole

  2. Nanorodnanosheet hierarchically structured ZnO crystals on zinc foil as flexible photoanodes for

    E-Print Network [OSTI]

    Cao, Guozhong

    for dye-sensitized solar cells Rui Gao,ab Jianjun Tian,a Zhiqiang Liang,a Qifeng Zhang,a Liduo Wang method on zinc foil and used as flexible photoanodes in dye-sensitized solar cells (DSCs). Compared of the NR­NS hierarchical structures are discussed. 1 Introduction Dye-sensitized solar cells (DSCs

  3. Author's personal copy Electrochimica Acta 56 (2011) 19601966

    E-Print Network [OSTI]

    Cao, Guozhong

    in dye-sensitized solar cells with TiO2 aggregates/nanocrystallites mixed photoelectrodes Junting Xia November 2010 Keywords: Dye-sensitized solar cells Mixed photoelectrode Aggregates Light scattering conversion efficiency in dye- sensitized solar cells (DSCs). TiO2 aggregates/nanocrystallites composites

  4. journal homepage: www.elsevier.com/locate/nanoenergy Available online at www.sciencedirect.com

    E-Print Network [OSTI]

    Cao, Guozhong

    .sciencedirect.com RAPID COMMUNICATION Improved charge generation and collection in dye-sensitized solar cells of the most promising candidate photoanodes for dye-sensitized solar cells (DSCs) for its high electron reserved. Introduction Dye-sensitized solar cells (DSCs) based on wide bandgap oxide semiconductors

  5. Transactions Cite this: Dalton Trans., 2014, 43,

    E-Print Network [OSTI]

    Cao, Wenwu

    ), a novel photoanode material has been created for dye-sensitized solar cells (DSSC). The absorbing band electricity is an ideal way to utilize nature's renewable energy. Dye-sensitized solar cells (DSSCs) are one enhance ionic transport across dye-sensitized solar cells.10 H3PW12O40-doped TiO2 has been briefly

  6. Subscriber access provided by Northwestern Univ. Library The Journal of Physical Chemistry A is published by the American Chemical

    E-Print Network [OSTI]

    Electron Transport in Dye-Sensitized Solar Cells Based on ZnO Nanotubes: Evidence for Highly Efficient this article #12;Electron Transport in Dye-Sensitized Solar Cells Based on ZnO Nanotubes: Evidence for Highly ReceiVed: NoVember 26, 2008; ReVised Manuscript ReceiVed: December 19, 2008 Dye-sensitized solar cells

  7. 3760 DOI: 10.1021/la9031927 Langmuir 2010, 26(5), 37603765Published on Web 11/03/2009 pubs.acs.org/Langmuir

    E-Print Network [OSTI]

    .acs.org/Langmuir © 2009 American Chemical Society Dye Sensitized Solar Cells: TiO2 Sensitization with a Bodipy and applied to dye-sensitized solar cells (DSSCs). On the basis of absorption and fluorescence excitation-conjugate formation. Introduction Dye-sensitized solar cells (DSSCs) have received considerable attention as a low

  8. Subscriber access provided by Northwestern Univ. Library The Journal of Physical Chemistry C is published by the American Chemical

    E-Print Network [OSTI]

    -Sphere Redox Couples as Shuttles in Dye-Sensitized Solar Cells. Performance Enhancement Based on Photoelectrode this article #12;Outer-Sphere Redox Couples as Shuttles in Dye-Sensitized Solar Cells. Performance Enhancement blocking layers on fluorine-doped tin-oxide substrates in dye-sensitized solar cells (DSSCs), effectively

  9. This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research

    E-Print Network [OSTI]

    Wang, Zhong L.

    for dye-sensitized solar cell$ Wenxi Guoa,b , Chen Xua , Guang Zhua , Caofeng Pana , Changjian Linb counterelectrode; Dye-sensitized solar cell Abstract We have developed an innovative structure for enhancing promising renewable energy resources for sustainable development of the future, dye-sensitized solar cells

  10. Hollow hemispherical titanium dioxide aggregates fabricated by coaxial

    E-Print Network [OSTI]

    Cao, Guozhong

    hemispherical titanium dioxide aggregates fabricated by coaxial electrospray for dye-sensitized solar cell nanocrystallites were prepared by a coaxial electrospray method and applied to dye- sensitized solar cells (DSCs-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.JNP.6.063519] Keywords dye-sensitized solar cells; hollow

  11. Electrochimica Acta 59 (2012) 3238 Contents lists available at SciVerse ScienceDirect

    E-Print Network [OSTI]

    Cao, Guozhong

    nanoparticles for a dye-sensitized solar cell Naji Al Dahoudia,b, , Junting Xia,c , Guozhong Caoa a Department Keywords: Dye-sensitized solar cell Silica modification Titanium oxide a b s t r a c t Nanocomposites C in the air. A dye-sensitized solar cell utilizing this UV-polymerized MPTS-modified sample

  12. DOI: 10.1002/adfm.200701073 Polydisperse Aggregates of ZnO Nanocrystallites: A Method

    E-Print Network [OSTI]

    Cao, Guozhong

    -Conversion-Efficiency Enhancement in Dye-Sensitized Solar Cells** By Qifeng Zhang, Tammy P. Chou, Bryan Russo, Samson A. Jenekhe, and Guozhong Cao* 1. Introduction ZnO-based dye-sensitized solar cells (DSSCs) have attrac- ted considerable a relatively efficient dye-sensitized ZnO solar cell with a conversion efficiency of $3

  13. Delivered by Ingenta to: University of Washington

    E-Print Network [OSTI]

    Cao, Guozhong

    and Their Application in Dye-Sensitized Solar Cells Junting Xi1 2 , Qifeng Zhang1 , Shuhong Xie3 4 , Supan Yodyingyong1 spherical in shape with 0.4­3 m in diameter. When used in dye-sensitized solar cells, the films comprised nanoparticles under otherwise identical conditions. Keywords: Dye-Sensitized Solar Cell, TiO2 Aggregates

  14. Light scattering with oxide nanocrystallite aggregates for dye-

    E-Print Network [OSTI]

    Cao, Guozhong

    Light scattering with oxide nanocrystallite aggregates for dye- sensitized solar cell application 4://spiedl.org/terms #12;Light scattering with oxide nanocrystallite aggregates for dye-sensitized solar cell application used for a photoelectrode in a dye-sensitized solar cell, the aggregates can be designed to generate

  15. 9082 DOI: 10.1021/la904643t Langmuir 2010, 26(11), 90829087Published on Web 02/11/2010 pubs.acs.org/Langmuir

    E-Print Network [OSTI]

    .acs.org/Langmuir © 2010 American Chemical Society Dye-Sensitized Solar Cells: Driving-Force Effects on Electron/shuttles in dye-sensitized solar cells featuring modified TiO2 photoelectrodes. Surface modification and trap The archetypal, high-performance dye-sensitized solar cell (DSSC) introduced by O'Regan and Graetzel in 1991

  16. NANO EXPRESS Open Access Improving scattering layer through mixture of

    E-Print Network [OSTI]

    Park, Byungwoo

    and nanoparticles in ZnO-based dye-sensitized solar cells Chohui Kim1 , Hongsik Choi1 , Jae Ik Kim1 , Sangheon Lee1. Keywords: Dye-sensitized solar cell; ZnO photoelectrode; Light trapping; Nanoparticle; Nanoporous sphere Background Dye-sensitized solar cells (DSSCs) have shown promising potential as an alternative to Si thin

  17. Materials Sciences and Applications, 2011, 2, 1427-1431 doi:10.4236/msa.2011.210193 Published Online October 2011 (http://www.SciRP.org/journal/msa)

    E-Print Network [OSTI]

    Cao, Guozhong

    Deposition of Titanium Oxide Nanoparticle Films for Dye-Sensitized Solar Cell Applications Jason Bandy the efficiency of the dye-sensitized solar cells with films created using electrophoretic deposition, the problem particles, efficiency of 4.91% with fill factor of 0.55 was obtained. Keywords: Dye-Sensitized Solar Cells

  18. Photovoltaics F.J. Himpsel, University of Wisconsin Madison

    E-Print Network [OSTI]

    Saffman, Mark

    PVNews) #12;Use nanoparticles, molecules, electrolytes for flexibility Dye-sensitized solar cell (Grätzeld metal Ru , which is commonly used in dye-sensitized solar cells. Cook et al., J. Chem. Phys. 131). Record efficiency for dye-sensitized solar cells (12.3%) donor - absorber to acceptor #12;Spectroscopy

  19. Hyung Jun Koo E-mail: hjkoo@ncsu.edu Tel: 919-434-3676

    E-Print Network [OSTI]

    Velev, Orlin D.

    efficiency dye-sensitized solar cells (DSSC) Supervisor: Nam-Gyu Park RESEARCH EXPERIENCE · Fabrication in dye- sensitized solar cell", Inorganica Chimica Acta, 361, 677-683 (2008). 2. J. Park, H.-J. Koo, B. Yoo, K. Yoo, K. Kim, W. Choi, N.-G. Park, "On the I­V measurement of dye- sensitized solar cell

  20. DOI: 10.1002/cphc.201000854 Incorporating Multiple Energy Relay Dyes in Liquid Dye-

    E-Print Network [OSTI]

    McGehee, Michael

    *[a] 1. Introduction The dye-sensitized mesoscopic solar cell (DSC) has been inten- sively investigated for ERDs to be used in state-of-the-art dye-sensitized solar cells, they must be able to strongly absorb multiple energy relay dyes inside dye-sensitized solar cells. Additional photoresponse from 400­590 nm

  1. 19478 Phys. Chem. Chem. Phys., 2013, 15, 19478--19486 This journal is c the Owner Societies 2013 Cite this: Phys.Chem.Chem.Phys.,2013,

    E-Print Network [OSTI]

    Thygesen, Kristian

    porphyrins for dye sensitized solar cells Kristian B. ?rnsø,*a Juan M. Garcia-Lastraab and Kristian S. Thygesena An efficient dye sensitized solar cell (DSSC) is one possible solution to meet the world's rapidly the emergence of the first efficient system in 1991,1 dye sensitized solar cells (DSSCs) have been intensively

  2. Method of fabricating a solar cell

    DOE Patents [OSTI]

    Pass, Thomas; Rogers, Robert

    2014-02-25T23:59:59.000Z

    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.

  3. Metal electrode for amorphous silicon solar cells

    DOE Patents [OSTI]

    Williams, Richard (Princeton, NJ)

    1983-01-01T23:59:59.000Z

    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.

  4. Plastic Schottky barrier solar cells

    DOE Patents [OSTI]

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

    1984-01-24T23:59:59.000Z

    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. Solar Cells in 2009 and Beyond Mike McGehee

    E-Print Network [OSTI]

    McGehee, Michael

    ;Inorganic Thin Film Solar Cells CdTe CIGS (CuInGaSe2) amorphous Si A thin film of semiconductorSolar 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

  6. Flexible thermal cycle test equipment for concentrator solar cells

    DOE Patents [OSTI]

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

    2012-06-19T23:59:59.000Z

    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.

  7. 50% EFFICIENT SOLAR CELL ARCHITECTURES AND DESIGNS Allen Barnett1

    E-Print Network [OSTI]

    Honsberg, Christiana

    paths to low cost. Our central innovation is to co-design the optical, interconnect and solar cell cost drivers through novel solar cell architectures and optical elements. LOW CONCENTRATION50% EFFICIENT SOLAR CELL ARCHITECTURES AND DESIGNS Allen Barnett1 , Christiana Honsberg1 , Douglas

  8. MILESTONES TOWARD 50% EFFICIENT SOLAR CELL MODULES Allen Barnett1

    E-Print Network [OSTI]

    Honsberg, Christiana

    and a new silicon solar cell for the mid-energy photons, all while circumventing existing cost driversMILESTONES TOWARD 50% EFFICIENT SOLAR CELL MODULES Allen Barnett1 , Douglas Kirkpatrick2 LightSpin Technologies ABSTRACT: The Very High Efficiency Solar Cell (VHESC) program is developing

  9. 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

  10. A plasmonically enhanced polymer solar cell with goldsilica coreshell nanorods

    E-Print Network [OSTI]

    Xiong, Qihua

    to conventional silicon solar cells due to the low-cost materi- als, mechanical flexibility and solutionA plasmonically enhanced polymer solar cell with goldsilica coreshell nanorods Xiaoyan Xu: Polymer solar cells Au nanorods Metallic nanoparticles Plasmonic effects a b s t r a c t We report the use

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

    E-Print Network [OSTI]

    Cui, Yi

    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

  12. Simulations of solar cell absorption enhancement using resonant modes

    E-Print Network [OSTI]

    Grandidier, Jonathan

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

  13. 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

  14. EELE408 Photovoltaics Lecture 13: Solar Cell Design I

    E-Print Network [OSTI]

    Kaiser, Todd J.

    1 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 Specify the parameters of solar cell structure in order to maximize efficiency given a set of constraints

  15. EELE408 Photovoltaics Lecture 10 Solar Cell Operation

    E-Print Network [OSTI]

    Kaiser, Todd J.

    1 EELE408 Photovoltaics Lecture 10 Solar Cell Operation Dr. Todd J. Kaiser tjkaiser@ece.montana.edu Department of Electrical and Computer Engineering Montana State University - Bozeman P-N Junction Solar CellVbi Charge Density Electrostatic Potential Vbi Solar Cell Operation n Emitter p Base Rear Contact

  16. Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells

    E-Print Network [OSTI]

    Atwater, Harry

    Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells Vivian E. Ferry, Luke sunlight into guided modes in thin film Si and GaAs plasmonic solar cells whose back interface is coated. These findings show promise for the design of ultrathin solar cells that exhibit enhanced absorption

  17. 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

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

    DOE Patents [OSTI]

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

    2012-12-18T23:59:59.000Z

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

  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

    2014-04-29T23:59:59.000Z

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

  20. Solar Cell Simulation | Department of Energy

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

    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 DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary ofSmallConfidential,2 Solar Background Document 2Solar Cell

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

    E-Print Network [OSTI]

    Deng, Xunming

    Deng & Schiff, Amorphous Silicon Based Solar Cells rev. 7/30/2002, Page 1 Amorphous Silicon Based Solar Cells Xunming Deng and Eric A. Schiff Table of Contents 1 Overview 3 1.1 Amorphous Silicon: The First Bipolar Amorphous Semiconductor 3 1.2 Designs for Amorphous Silicon Solar Cells: A Guided Tour 6

  2. 1996 DOI: 10.1021/la104297s Langmuir 2011, 27(5), 19961999Published on Web 01/20/2011 pubs.acs.org/Langmuir

    E-Print Network [OSTI]

    Suitable for High-Efficiency Energy Conversion in Dye-Sensitized Solar Cells Nak Cheon Jeong, Omar K. Farha a standard commercial source of TiO2 paste. Introduction Dye-sensitized solar cells (DSSCs) have received them in comparatively few steps. When used for fabrication of photoelectrodes for dye-sensitized solar

  3. Organophosphates as Solvents for Electrolytes in Electrochemical Andrew Hess, Greg Barber, Chen Chen, Thomas E. Mallouk, and Harry R. Allcock*

    E-Print Network [OSTI]

    , electrolyte, dye-sensitized solar cell, lithium batteries, fire-retardant 1. INTRODUCTION Dye-sensitized solar-retardant oligoalkyleneoxy- phosphates was synthesized for evaluation as liquid or gel-type electrolyte media for dye-sensitized solar cells (DSSCs) and secondary lithium batteries. Unoptimized DSSC electrolyte formulations for DSSCs

  4. Significantly improved charge-collection efficiencies result from a general chemical approach to synthesizing photocathodes.

    E-Print Network [OSTI]

    as photocathodes for p-type semiconductor-sensitized solar cells. Compared to dye-sensitized NiO photocathodes for photoelectrochemical solar cells. Key Result Compared to dye-sensitized NiO photocathodes, the CdS-sensitized Ni coupled to a dye-sensitized photoanode, could significantly increase overall solar conversion efficiency

  5. pubs.acs.org/cmPublished on Web 03/31/2010r 2010 American Chemical Society Chem. Mater. 2010, 22, 24272433 2427

    E-Print Network [OSTI]

    Cao, Guozhong

    in the presence of lithium ions and films consisting of these aggregates for dye-sensitized solar cell, many studies in the past 2 decades have been focused on the development of dye-sensitized solar cells, 2427­2433 2427 DOI:10.1021/cm9009942 Effects of Lithium Ions on Dye-Sensitized ZnO Aggregate Solar

  6. 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

    2015-01-01T23:59:59.000Z

    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.

  7. ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg Solar Cell Operation

    E-Print Network [OSTI]

    Honsberg, Christiana

    is lost as heat. energy Eg 2 31 Absorption process #12;ELEG620: Solar Electric Systems UniversityELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg Solar Cell and shunt resistance). #12;ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C

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

    E-Print Network [OSTI]

    Huang, Jianqiao

    2012-01-01T23:59:59.000Z

    Solar Energy Materials and Solar Cells, 86:207216, 2005. [silicon thin films and solar cells. Journal of Appliedof a p-i-n thin-film solar cell with front transparent con-

  9. Compensated amorphous-silicon solar cell

    DOE Patents [OSTI]

    Devaud, G.

    1982-06-21T23:59:59.000Z

    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.

  10. 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

  11. US polycrystalline thin film solar cells program

    SciTech Connect (OSTI)

    Ullal, H.S.; Zweibel, K.; Mitchell, R.L. (Solar Energy Research Inst., Golden, CO (USA)) [Solar Energy Research Inst., Golden, CO (USA)

    1989-11-01T23:59:59.000Z

    The Polycrystalline Thin Film Solar Cells Program, part of the United States National Photovoltaic Program, performs R D on copper indium diselenide and cadmium telluride thin films. The objective of the Program is to support research to develop cells and modules that meet the US Department of Energy's long-term goals by achieving high efficiencies (15%-20%), low-cost ($50/m{sup 2}), and long-time reliability (30 years). The importance of work in this area is due to the fact that the polycrystalline thin-film CuInSe{sub 2} and CdTe solar cells and modules have made rapid advances. They have become the leading thin films for PV in terms of efficiency and stability. The US Department of Energy has increased its funding through an initiative through the Solar Energy Research Institute in CuInSe{sub 2} and CdTe with subcontracts to start in Spring 1990. 23 refs., 5 figs.

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

    E-Print Network [OSTI]

    Nabben, Reinhard

    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

  13. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01T23:59:59.000Z

    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

  14. Evaluation of concentration solar cells for terrestrial applications

    E-Print Network [OSTI]

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

    2008-01-01T23:59:59.000Z

    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 ...

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

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

    OPVs AND SOLAR CELLS: THE BASICS Harvesting solar energy is a key endeavor for this century as we face ever-decreasing fossil fuel world reserves and ever-increasing environmental...

  16. 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....

  17. Solar module having reflector between cells

    DOE Patents [OSTI]

    Kardauskas, Michael J. (Billerica, MA)

    1999-01-01T23:59:59.000Z

    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.

  18. TRANSPARENT COATINGS FOR SOLAR CELLS RESEARCH

    SciTech Connect (OSTI)

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

    2013-04-16T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Borenstein, Severin

    2005-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Miller, Owen Dennis

    2012-01-01T23:59:59.000Z

    Surface Textures for Sub-Wavelength Solar Cells 7.1 Problemhigh-efficiency III-V cells, Solar Cells, vol. 30, pp. 337Limit 4 Analysis of next-generation solar cells 4.1 Carrier

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

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

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

  2. Solare Cell Roof Tile And Method Of Forming Same

    DOE Patents [OSTI]

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

    1999-11-16T23:59:59.000Z

    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.

  3. Hindawi Publishing Corporation International Journal of Photoenergy

    E-Print Network [OSTI]

    Cao, Guozhong

    as a photoanode in dye-sensitized solar cells (DSCs). They showed a high photocurrent density due to their higher trapping sites that affect the per- formance of dye-sensitized solar cells. Charge recombination occurs resources. Because of their low-cost materials and their simple elaboration of manufacturing, dye-sensitized

  4. Short communication Energy storage via polyvinylidene fluoride dielectric on the

    E-Print Network [OSTI]

    Jiang, Hongrui

    of dye-sensitized solar cells Xuezhen Huang, Xi Zhang, Hongrui Jiang* Materials Science Program element, typical strategies reported to date include dye-sensitized solar cell (DSSC)/Li battery, DSSC 2013 Accepted 21 September 2013 Available online 2 October 2013 Keywords: PVDF film Dye-sensitized

  5. Interfacial Electron Transfer into Functionalized Crystalline Polyoxotitanate Nanoclusters

    E-Print Network [OSTI]

    Coppens, Philip

    processes in a dye-sensitized solar cell. Theoretical simulations of the electron transfer of molecular adsorption are precisely defined. INTRODUCTION Dye-sensitized solar cells (DSSC) promise the dye sensitizer into the conduction band of the semiconductor substrate. Naturally, the interfaces

  6. Solar Cells DOI: 10.1002/ange.201203330

    E-Print Network [OSTI]

    Hone, James

    of Science, Office of Basic Energy Sciences under award number DE-SC0001085) and the FENA (Grant 2009-NTSolar Cells DOI: 10.1002/ange.201203330 A Supramolecular Complex in Small-Molecule Solar Cells solution can create the active layer in solar cells. We found that there is self-organization between

  7. Solar Cell Nanotechnology Final Technical Report

    SciTech Connect (OSTI)

    Das, Biswajit [University of Nevada, Las Vegas

    2014-05-07T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Not Available

    2015-01-01T23:59:59.000Z

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

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

    SciTech Connect (OSTI)

    Not Available

    2013-09-01T23:59:59.000Z

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

  10. 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...

  11. amorphous solar cell: Topics by E-print Network

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

    The convergence Schiff, Eric A. 20 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  12. arsenide solar cells: Topics by E-print Network

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

    Pankaj J Edla; Dr. Bhupendra Gupta 92 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  13. alingap solar cell: Topics by E-print Network

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

    Pankaj J Edla; Dr. Bhupendra Gupta 84 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  14. automated solar cell: Topics by E-print Network

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

    Pankaj J Edla; Dr. Bhupendra Gupta 103 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  15. arsenide solar cell: Topics by E-print Network

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

    Pankaj J Edla; Dr. Bhupendra Gupta 92 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  16. alloy solar cells: Topics by E-print Network

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

    Pankaj J Edla; Dr. Bhupendra Gupta 91 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  17. Method of fabricating bifacial tandem solar cells

    DOE Patents [OSTI]

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

    2014-10-07T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Huang, Yanyi

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

  19. An Overview of Solar Cell Technology Mike McGehee

    E-Print Network [OSTI]

    McGehee, Michael

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

  20. Efficiency limits of quantum well solar cells

    E-Print Network [OSTI]

    Connolly, J P; Barnham, K W J; Bushnell, D B; Tibbits, T N D; Roberts, J S

    2010-01-01T23:59:59.000Z

    The quantum well solar cell (QWSC) has been proposed as a flexible means to ensuring current matching for tandem cells. This paper explores the further advantage afforded by the indication that QWSCs operate in the radiative limit because radiative contribution to the dark current is seen to dominate in experimental data at biases corresponding to operation under concentration. The dark currents of QWSCs are analysed in terms of a light and dark current model. The model calculates the spectral response (QE) from field bearing regions and charge neutral layers and from the quantum wells by calculating the confined densities of states and absorption coefficient, and solving transport equations analytically. The total dark current is expressed as the sum of depletion layer and charge neutral radiative and non radiative currents consistent with parameter values extracted from QE fits to data. The depletion layer dark current is a sum of Shockley-Read-Hall non radiative, and radiative contributions. The charge neu...