Advances In Production Mbe Grown Gainp/Gaas Cascade Solar Cells
CONFERENCE RECORD OF THE TWENTY-EIGHTH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2000(2000)
摘要
GaInP/GaAs cascade solar cells with varying top cell base layer thickness were grown by production solid source molecular beam epitaxy (MBE). The MBE growth was optimized with special control over growth related defects resulting in a beginning of life conversion efficiency of 23.2 % for a 2x2 cm solar cell. Consistent results were obtained with a balloon calibration. An end of life efficiency of 19.8 % and power remaining factor of 0.91 were obtained for these cells after 10(15) cm(-2) 1 MeV electron irradiation. The good radiation resistance was attributed to the GaInP top cell dominated degradation and graded doping profiles of the top cell.
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关键词
electron irradiation,radiation resistance,epitaxial growth,semiconductor doping,conversion efficiency,molecular beam epitaxy,gallium arsenide,doping,solids,inductors
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