Electrical contacts and method of manufacturing same

Details Electrical contacts and method of manufacturing same Electrical contacts and method of manufacturing same

H - Electricity

01

L

H01L 31/0224 (2006.01) H01L 31/04 (2006.01) H01L 31/068 (2006.01) H01L 31/18 (2006.01)

Patent

CA 2070420

2070420 9205587 PCTABS00011 A known rear contact construction on silicon solar cells comprises aluminum contacts with silver soldering pads. According to this invention, nickel is introduced into the contact construction to reduce the contact resistance between the aluminum contact material and the silver pads. In one embodiment, the nickel is applied as an intermediate layer (32) between the silicon substrate (2) and each silver pad (20). In a second and preferred embodiment, the nickel is incorporated into the silver ink that is used to make the soldering pads.

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