Batteries: thermoelectric and photoelectric – Photoelectric – Panel or array
Patent
1980-06-23
1981-09-15
Weisstuch, Aaron
Batteries: thermoelectric and photoelectric
Photoelectric
Panel or array
136244, 136255, 136256, 357 15, 357 30, H01L 3106
Patent
active
042899206
ABSTRACT:
The disclosure provides a highly efficient e.g., up to 40% efficiency, solar cell for solar energy concentrator use. Two solar cell layers comprised of different semiconductor materials are grown upon a transparent, insulating substrate. A metal layer covering the bottom serves to reflect light back through the structure, and can serve as a wrap-around electrical contact to both materials. As an example, a structure of Si and GaAlAs is produced on a substrate from the group consisting of Al.sub.2 O.sub.3, Spinel, Quartz and BeO.
REFERENCES:
patent: 4070206 (1978-01-01), Kressel et al.
patent: 4094704 (1978-06-01), Milnes
patent: 4244750 (1981-01-01), Chenevas-Paule et al.
K. D. Rasch et al., "Advanced Thin Silicon Solar Cell with Controlled Optical Absorptance", Proceedings, 2nd European Community Photovoltaic Solar Energy Conference, Berlin, 1979, Reidel Publishing Co. (1979).
L. A. Hussain, "Back-Reflection Effect on the Long Wavelength Response of Solar Cells", J. Phys. D. Appl. Phys., vol. 11, pp.1535-1537 (1978).
D. Redfield, "Multiple-Pass Thin Film Silicon Solar Cell," Appl. Phys. Lett., vol. 25, pp. 647-648 (1974).
International Business Machines - Corporation
Weisstuch Aaron
Wiener Bernard N.
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