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:
Dec. 16, 1997
Filed:
May. 23, 1995
Applicant:
Inventor:
Jack I Hanoka, Brookline, MA (US);
Assignee:
Mobil Solar Energy Corporation, Billerica, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437-2 ; 437-4 ; 437180 ; 437203 ; 437228 ;
Abstract
A solar cell fabrication procedure is described in which a silicon substrate having a layer of silicon nitride on one side is selectively coated with a paste that contains silver metal and a glass frit. Upon heating to a temperature in excess of 760 degrees C. for a time not exceeding about 20 seconds, the glass penetrates the silicon nitride and the substrate surface is metallized by the silver metal, with the result that the finished solar cell has a fill factor of at least about 0.75 even though the paste contains no phosphorus.