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:
Mar. 21, 2000
Filed:
Apr. 22, 1998
Hisao Morooka, Yamanashi, JP;
Takamitsu Miura, Kanagawa, JP;
Hiroshi Yamada, Yamanashi, JP;
Katsuki Kurihara, Yamanashi, JP;
Mitsutaka Matsuse, Yamanashi, JP;
Yasuyuki Arai, Kanagawa, JP;
Semicondutor Energy Laboratory Co., Ltd., Kanagawa, JP;
TDK Corporation, Tokyo, JP;
Abstract
In a solar cell including a photoelectric conversion layer 14 disposed on a flexible substrate 11 and constituted by a laminated layer of non-single crystalline silicon thin films, the flexible substrate 11 has a coefficient of linear thermal expansion of is 2.0 ppm to 10.0 ppm. By this, the coefficient of linear thermal expansion of the flexible substrate 11 and that of the photoelectric conversion layer 14 become close to each other, so that warp and deformation during manufacturing steps and after the steps are decreased. Further, since stress applied to the photoelectric conversion layer 14 is also lessened, the photoelectric conversion efficiency can be increased.