Electrical contacts for a thin-film semiconductor device

Today's pick up in solar cell / photovoltaic patents.

4,854,974 (Aug. 08 1989)

Electrical contacts for a thin-film semiconductor device.

DavidE. Carlson, CharlesR. Dickson and RobertV. D'Aiello

Solarex Corporation

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.

Score=530/1000

Group->>_P4196438

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