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On-Sun Comparison of GaInP2/GaAs Tandem Cells with Top Cell Thickness Varied [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2005.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
7 pages : digital, PDF file
Additional Creators
United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
This study compares the on-sun performance of a set of GaInP2/GaAs tandem cells with different GaInP2 top-cell thicknesses. Because high-efficiency III-V cells are best suited to concentrating photovoltaic (CPV) applications, the cells were mounted on a two-axis tracker with the incident sunlight collimated to exclude all except the direct beam. Current-voltage (I-V) curves were taken throughout the course of several days, along with measurements of the direct solar spectrum. Our two major conclusions are: (1) GaInP2/GaAs tandem cells designed for an ''air mass 1.5 global'' (AM 1.5G) or a ''low aerosol optical depth'' (Low AOD) spectrum perform the best, and (2) cells can be characterized indoors and modeled using outdoor spectra to predict the correct result. These results are equally valid for GaInP2/GaAs/Ge triple-junction cells.
Report Numbers
E 1.99:nrel/cp-520-37376
nrel/cp-520-37376
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Note
Published through SciTech Connect.
02/01/2005.
"nrel/cp-520-37376"
Prepared for the 31st IEEE Photovoltaics Specialists Conference and Exhibition, Lake Buena Vista, FL (US), 01/03/2005--01/07/2005.
Young, M. S.; Kurtz, S.; Ward, J. S.; Kramer, C. M.; Emery, K. E.; Duda, A.; Friedman, D. J.; McMahon, W. E.; Ottoson, L.
National Renewable Energy Lab., Golden, CO (US)
Funding Information
AC36-99-GO10337
View MARC record | catkey: 14450461