Joy M Barrett

US Patent:

44756828, Oct 9, 1984

Filed:

May 4, 1982

Appl. No.:

6/374675

Inventors:

R. T. Coyle - Lakewood CO
Joy M. Barrett - Eldorado Springs CO

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B23K 120

US Classification:

228123

Abstract:

Disclosed is a process for substantially reducing the series resistance of a solar cell having a thick film metal contact assembly thereon while simultaneously removing oxide coatings from the surface of the assembly prior to applying solder therewith. The process includes applying a flux to the contact assembly and heating the cell for a period of time sufficient to substantially remove the series resistance associated with the assembly by etching the assembly with the flux while simultaneously removing metal oxides from said surface of said assembly.