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. 11, 2000
Filed:
Apr. 30, 1997
Applicant:
Inventors:
Assignee:
Showa Shell Sekiyu K.K., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
20419228 ; 20419226 ; 20419215 ; 20429813 ; 20429826 ; 438 95 ; 427 76 ;
Abstract
A thin-film light absorbing layer which is regulated so as to have any desired gallium concentration and which is capable of attaining a high open-circuit voltage is formed by a simple method at a temperature lower than the softening point of the soda-lime float glass. A light absorbing layer is formed by forming a back electrode on a soda-lime float glass substrate, forming on the back electrode layer a stacked precursor film including a copper-gallium alloy layer and an indium layer by sputtering, and then heating the precursor film in an atmosphere of selenium and/or sulfur.