The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 1980
Filed:
Mar. 29, 1979
Applicant:
Inventor:
Charles F Gay, Tujunga, CA (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
156662 ; 29572 ; 134-3 ; 136 / ; 136 / ; 156657 ; 252 793 ;
Abstract
A method for manufacturing solar cells from a silicon wafer having a p-n junction therein and front and back contacts thereon, the improvement comprising washing said wafer with a buffered hydrofluoric acid solution having a pH of from about 3.5 to about 6.5 and containing from about 2 to about 10 weight percent hydrofluoric acid based on the total weight of the solution.