Solar cell having improved front surface metallization

Details Solar cell having improved front surface metallization Solar cell having improved front surface metallization

1986-11-04

1987-09-15

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

136262, 357 68, H01L 3106

Patent

active

046941150

ABSTRACT:
A gallium arsenide solar cell is disclosed having an aluminum gallium arsenide window layer in which fine metallic contact lines extend through the aluminum gallium arsenide window to electrically contact the emitter layer, and a plurality of metallic grid lines disposed on the window layer cross the contact lines, thereby making electrical contact to the metallic contact lines. A flat metallic strip extending along one of the edges of the solar cell electrically couples the grid lines to one another. Consequently, two separate metals can be used, one with good ohmic contact properties for the grid lines and another with good adhesion and current conducting properties for the current collecting bars. Additionally, the metallic contacts lines can be made very narrow to reduce the contact area to the emitter thereby reducing the recombination current in the emitter.

REFERENCES:
patent: 3982964 (1976-09-01), Lindmayer et al.
patent: 4122476 (1978-10-01), Hovel et al.
patent: 4126930 (1978-11-01), Moon
patent: 4395583 (1983-07-01), Meulenberg, Jr. et al.
patent: 4401840 (1983-08-01), Chitre
patent: 4564720 (1986-01-01), Hogan
patent: 4589191 (1986-05-01), Green et al.

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