Electrical contacts for a thin-film semiconductor device

Details Electrical contacts for a thin-film semiconductor device Electrical contacts for a thin-film semiconductor device

1988-05-23

1989-08-08

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Panel or array

136258, 357 65, 357 30, H01L 2714

Patent

active

048549746

ABSTRACT:
A method of fabricating spaced-apart back contacts on a thin film of semiconductor material by forming strips of buffer material on top of the semiconductor material in locations corresponding to the desired dividing lines between back contacts, forming a film of metal substantially covering the semiconductor material and buffer strips, and scribing portions of the metal film overlying the buffer strips with a laser without contacting the underlying semiconductor material to separate the metal layer into a plurality of back contacts. The buffer material serves to protect the underlying semiconductor material from being damaged during the laser scribing. Back contacts and multi-cell photovoltaic modules incorporating such back contacts also are disclosed.

REFERENCES:
patent: 4191794 (1980-03-01), Shirland et al.
patent: 4668840 (1987-05-01), Kiyama et al.
patent: 4697041 (1987-09-01), Okaniwa et al.

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