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:
Jul. 10, 1990
Filed:
Sep. 02, 1988
Naoki Suyama, Osaka, JP;
Noriyuki Ueno, Nara, JP;
Kuniyoshi Omura, Osaka, JP;
Hazime Takada, Osaka, JP;
Yuutaro Kita, Osaka, JP;
Mikio Murozono, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A polycrystalline CuInSe.sub.2 film is produced by adding a liquid cooling medium to a mixture of Cu, In and Se powders, grinding the resulting composition by means of a ball-mill to provide a slurry containing CuInSe.sub.2 of low crystallinity, drying and adding a binding agent to the slurry to form a paste, coating a substrate with the paste, and sintering the paste so applied under a nitrogen atmosphere. The starting materials that can be used are not limited to respective powders of the above-mentioned elements but may be Cu-Se and In-Se compounds and the method provides CuInSe.sub.2 of excellent quality on a mass production scale at low cost.