Solar cell having improved back surface reflector

Details Solar cell having improved back surface reflector Solar cell having improved back surface reflector

1981-03-11

1982-10-19

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

29572, 136256, 357 30, 427 88, 427 89, 427 90, 427 91, H01L 3104, H01L 3118

Patent

active

043551963

ABSTRACT:
This invention is concerned with reducing the operating temperature and increasing the output of a solar cell.
A solar cell (10) constructed in accordance with the invention carries electrodes (22) in a grid finger pattern on its back surface (12). These electrodes are sintered at the proper temperature to provide good ohmic contact.
After sintering, a reflective material (24) is deposited on the back surface by vacuum evaporation. Thus, the application of the back surface reflector is separate from the back contact formation.
Back surface reflectors formed in conjunction with separate grid finger configuration back contacts are more effective than those formed by full back metallization of the reflector material.

REFERENCES:
patent: Re29833 (1978-11-01), Mlavsky
patent: 2001672 (1935-05-01), Carpenter
patent: 3532551 (1970-10-01), Webb
patent: 3988167 (1976-10-01), Kressel et al.
patent: 3989541 (1976-11-01), Brandhorst, Jr.

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