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Structure and Effects of Extended Defects in Polycrystalline Si Thin Films

Description: The structure and effects of extended defects in rapid deposited polycrystalline Si thin films were studied using a combination of high-resolution transmission electron microscopy and first-principles total energy calculations.
Date: January 1, 2000
Creator: Yan, Y.; Al-Jassim, M. M.; Wang, T. H. & Ciszek, T. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Performance Summary for the First Solar CdTe 1-kW System: Preprint

Description: Presented at the 2001 NCPV Program Review Meeting: Describes performance of 1-kWac CdTe PV array from First Solar operated at NREL from 6/95 to 14/00. This paper describes the performance of a 1-kW{sub ac} CdTe PV array from First Solar (formerly Solar Cells, Inc.) operated at NREL from June 1995 to November 2000. The PV array operating efficiencies over the 5.5-year period were calculated from 15-minute averages to determine changes in seasonal and annual performance. Performance measurements … more
Date: October 1, 2001
Creator: Marion, B.; del Cueto, J.; McNutt, P. & Rose, D.
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Partner: UNT Libraries Government Documents Department
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Concentrating Photovoltaics: Collaborative Opportunities within DOEs CSP and PV Programs; Preprint

Description: Presented at the 2001 NCPV Program Review Meeting: DOEs Concentrating Solar Power program is investigating the viability of concentrating PV converters as an alternative to thermal conversion devices.
Date: October 1, 2001
Creator: Mehos, M.; Lewandowski, A.; Symko-Davies, M. & Kurtz, S.
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Partner: UNT Libraries Government Documents Department
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DOE Fundamental and Exploratory Research Program in Photovoltaics: Preprint

Description: Presented at the 2001 NCPV Program Review Meeting: Overview of the Fundamental and Exploratory Research project with the DOE Basic Sciences program and the National Center for Photovoltaics. This paper presents an overview of the Fundamental and Exploratory Research project within the U.S. Department of Energy's National Center for Photovoltaics (NCPV). The idea behind the project is to identify, support, evaluate and coordinate an optimal spectrum of complementary projects that either contribu… more
Date: October 1, 2001
Creator: Matson, R.; McConnell, R. & Eddy, F. P.
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Partner: UNT Libraries Government Documents Department
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Electron Microscopy Studies of Potential 1-eV Bandgap Semiconductor Compounds ZnGeAs2 and Zn3As2 Grown by MOVPE: Preprint

Description: Presented at the 2001 NCPV Program Review Meeting: Electron microscopy studies of MOVPE layers of materials that are potential 1-eV bandgap semiconductors for solar cells.
Date: October 1, 2001
Creator: Norman, A. G.; Olson, J. M.; Romero, M. J. & Al-Jassim, M. M.
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Partner: UNT Libraries Government Documents Department
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Partnering with the NCPV (Brochure)

Description: Brochure that explains the basic partnering opportunities that exist within the National Center for Photovoltaics for industry and university groups: non-proprietary partnering opportunities, competitive solicitations, Technology Partnership Agreements, seed fund to develop Technology Partnership Agreements, Hands-On PV Experience Workshop, and NCPV Fellowship Program.
Date: June 1, 2013
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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BAs-GaAs Semiconductor Alloys as a Photovoltaic Alternative to Nitride Alloys

Description: Nitrogen alloyed III-V semiconductor compounds have been intensely studied in recent years due to unusual effects caused by nitrogen alloying. These effects are exploited in band gap engineering for specific applications such as solar cells and blue lasers.
Date: January 1, 2000
Creator: Hart, G. L. W. & Zunger, A.
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Partner: UNT Libraries Government Documents Department
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Small-Angle Neutron Scattering Studies of a-Si:H and a-Si:D

Description: The heterogeneity of hydrogen and deuterium on the nanometer scale has been probed by samll-angle neutron scattering (SANS) from a-Si:H and a-Si:D films. Films were depsoited by two techniques, plasma-enhanced chemical vapor deposition (PECVD) and hot-wire chemical vapor deposition (HWCVD) using conditions that yield high quality films and devices.
Date: January 1, 2000
Creator: Williamson, D. L.; Marr, D. W. M.; Nelson, B. P.; Iwaniczko, E.; Yang, J.; Yan, B. et al.
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Partner: UNT Libraries Government Documents Department
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Procedures at NREL for Evaluating Multijunction Concentrator Cells

Description: The procedures for evaluating the performance of multijunctiion-concentrator cells at the National Renewable Energy Laboratory are described. The accurate measurement of the performance of multijunction cells requires accurate relative-quantum-efficiency-measurements, "matched" reference cells, and a spectrally adjustable solar simulator.
Date: January 1, 2000
Creator: Moriarty, T. & Emery, K.
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Partner: UNT Libraries Government Documents Department
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Effects of Surface Composition on CdTe/CdS Device Performance

Description: The atomic composition of the back surface of the CdTe layer in a CdTe/CdS photovoltiac (PV) device has a significant influence on the quality of the electrical contact to this layer. This paper reports the results of a systematic study that correlates the composition of the back surface with pre-contact processing and device performance.
Date: January 1, 2000
Creator: Levi, D.; Albin, D. & King, D.
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Partner: UNT Libraries Government Documents Department
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Photothermal Stability of Various Module Encapsulants and Effects of Superstrate and Substrate Materials Studied for PVMaT Sources

Description: This paper briefs the photothermal reliability studies we conducted on different encapsulation materials for some U.S. PV companies that are subcontractors of the Photovoltaic Manufacturing Technology (PVMaT) program.
Date: January 1, 2000
Creator: Pern, F. J. & Glick, S. H.
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Partner: UNT Libraries Government Documents Department
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Comparison of Dye-Sensitized Rutile- and Anatase-Based TiO2 Solar Cells

Description: The objective of this work is to develop and optimize the new dye-sensitized solar cell technology. In view of the infancy of rutile material development for solar cells, the PV response of the dye-sensitized rutile-based solar cell is remarkably close to that of the anatase-based cell.
Date: January 1, 2000
Creator: Park, N. G.; van de Lagemaat, J. & Frank, A. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Non-linear Electron Transport Kinetics in Nanocrystalline TiO(2) Based Solar Cells

Description: An analytical model describing electron transport in dye-sensitized nanocrystalline TiO(2) solar cells is shown to account for the non-linear dependence of the electron transport rate on the electron concentration. Equations relating the influenece of an exponential distribtuion of surface states to electron transport are derived and verified by intensity-modulated photocurrent spectroscopy measurements. A slope of 69 meV is inferred for the surface-state distribution curve.
Date: January 1, 2000
Creator: van de Lagemaat, J. & Frank, A. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Preliminary Investigations of Outdoor Meteorological Broadband and Spectral Conditions for Evaluating Photovoltaic Modules and Systems

Description: Historically, flat-plate photovoltaic (PV) modules have been rated at "peak-output" for power generated under Standard; Reporting Conditions (SRC) of 1000 Watts per square meter W/m2 global irradiance at a standard temperature (25degC) and reference spectral distribution. We examine the direct-normal irradiance, spectral distribution, ambient temperature, and wind speed to be used for evaluating flatplate and concentrator module performance. Our study is based upon the 30-year U.S. National Sol… more
Date: January 1, 2000
Creator: Myers, D. R.; Kurtz, S. R.; Whitaker, C. & Townsend, T.
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Partner: UNT Libraries Government Documents Department
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Highly Efficient 32.3% Monolithic GaInP/GaAs/Ge Triple Junction Concentrator Solar Cells

Description: Based on recent cell improvements for space applications, multijunction cells apear to be ideal candidates for high efficiency, cost effective, PV concentrator systems.
Date: January 1, 2000
Creator: Cotal, H. L.; Lillington, D. R.; Ermer, J. H.; King, R. R.; Karam, N. H.; Kurtz, S. R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nitrogen-Induced Evolution of GaAs1-xNx Studied by Ballistic Electron Emission Spectroscopy

Description: Giant bandgap reduction of dilute GaAs1-xNx with nitrogen incorporation makes this material to be very attractive for conversion efficiency increase in multijunction, high efficiency solar cells.
Date: January 1, 2000
Creator: Narayanamurti, V.; Kozhevnikov, M.; Xin, H. P.; Tu, C. W.; Mascarenhas, A. & Zhang, Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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