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:
Aug. 14, 2001
Filed:
Nov. 05, 1999
Hidenobu Nakazawa, Fuji, JP;
Takayuki Watanabe, Fuji, JP;
Asahi Kasei Kabushiki Kaisha, , JP;
Abstract
A solar cell having a semiconductor layer of a chalcopyrite structure as a light absorption layer and using a flexible film as a substrate, breakdown and peeling caused to the semiconductor layer of the chalcopyrite structure due to warp of the flexible film upon heat treatment is prevented. To realize this, a poly(phenylene terephthalmide) film having a coefficient of heat expansion of 5.0×10,/° C. is used as a substrate (,). After a Ti reinforcing layer (,) is disposed on the entire back surface of this substrate (,), a first electrode layer (,) is disposed on the front surface of this substrate (,), and a p-type semiconductor layer (,) of a chalcopyrite structure is formed as a light absorption layer on the surface of the first electrode layer (,).