NASA NTRS · 19870016984
High-efficiency GaAs concentrator space cells
Abstract
High efficiency Al sub x Ga sub 1-x As/GaAs heteroface solar concentrator cells have been developed for space applications. The cells, which were grown using metalorganic chemical vapor deposition (MOCVD), have been fabricated in both the p-n and n-p configurations. Magnesium and zinc are used as the p-type dopants, and Se is used as the n-type dopant. The space cells, which are designed for use in a Cassegrainian concentrator operating at 100 suns, AMO, have a circular illuminated area 4 mm in diameter on a 5 mm by 5 mm cell. These cells have exhibited flash-tested efficiencies as high as 23.6 percent at 28 C and 21.6 percent at 80 C.
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Werthen, J. G., Virshup, G. F., Macmillan, H. F., Ford, C. W., Hamaker, H. C.. 1987-06-01. High-efficiency GaAs concentrator space cells. https://ntrs.nasa.gov/citations/19870016984
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