Laser grooved solar cell

Details Laser grooved solar cell Laser grooved solar cell

1984-12-19

1986-12-02

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

29572, 29580, 29583, 156643, 156644, 156647, 219121LL, 219121LN, 357 20, 357 30, 357 52, H01L 3106, H01L 3118

Patent

active

046266135

ABSTRACT:
Grooved solar cells are manufactured by scribing the surface of the substrate with a laser scribing tool, and optionally etching the surface to more accurately determine the surface profile, before performing the remainder of the processing steps involved in the production of the solar cell. Top contact shading is avoided by providing holes through the substrate which allow connection to the top layer of the cell to be made from the back of the cell. Resistance to radiation is improved by providing a cell which is grooved on the top and bottom surfaces, the grooves of the bottom surface being spaced between the grooves on the top surface to allow the formation of a relatively thin cell structure. Top layer sheet resistivity is also varied to allow improved efficiency while maintaining the series resistance of the cell substantially unaltered.

REFERENCES:
patent: 3150999 (1964-09-01), Rudenberg et al.
patent: 3278337 (1966-10-01), Gault
patent: 4044222 (1977-08-01), Kestenbaum
patent: 4081289 (1978-03-01), Campbell, III
patent: 4348254 (1982-09-01), Lindmayer
patent: 4352948 (1982-10-01), Kaplow et al.
patent: 4409423 (1983-10-01), Holt
patent: 4427839 (1984-01-01), Hall

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