Batteries: thermoelectric and photoelectric – Photoelectric – Panel or array
Patent
1980-06-23
1981-10-13
Weisstuch, Aaron
Batteries: thermoelectric and photoelectric
Photoelectric
Panel or array
136255, 136261, 136262, 357 30, H01L 3106
Patent
active
042950023
ABSTRACT:
A solar cell is disclosed with V-grooves which are series connected, but electrically isolated, indirect bandgap solar cells which are responsive to different light frequencies on both sides of a semi-insulating optically transparent substrate. The device has a very high conversion efficiency of approximately 40% and high open-circuit voltage and low series resistance. An exemplary structure in accordance with this disclosure has a series of silicon V-groove cells on one side and another series of GaAlAs V-groove cells on the other side. The cells are of generally trapezoidal cross-section. The difference between the characteristics of the Si cell and the GaAlAs cell is matched by control of the number of V-grooves.
REFERENCES:
patent: 3990101 (1976-11-01), Ettenberg et al.
patent: 3995303 (1976-11-01), Nahory et al.
patent: 4017332 (1977-04-01), James
patent: 4094704 (1978-06-01), Milnes
patent: 4158577 (1979-06-01), Milnes
patent: 4200472 (1980-04-01), Chappell et al.
T. Katoda et al., "Heteroepitaxial Growth of Gallium Phosphide on Silicon", J. Electronic Materials, vol. 9, pp. 783-796 (1980).
A. K. Sreedhar et al., "Efficiency Calculations of Heterojunction Solar Energy Converters", IEEE Trans. Electron Devices, vol. ED-16, pp. 309-312 (1969).
Chappell Terry I.
Woodall Jerry M.
International Business Machines - Corporation
Weisstuch Aaron
Wiener Bernard N.
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