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:
Jun. 06, 2000
Filed:
Feb. 26, 1997
Applicant:
Inventors:
Jinsho Matsuyama, Kyoto-fu, JP;
Koichi Matsuda, Nara, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
136256 ;
Abstract
A photovoltaic device comprising an opaque substrate having an irregular surface structure comprising a plurality of linear irregularities or recesses arranged therein and a photoelectric conversion layer formed on said irregular surface structure of said substrate, wherein said plurality of linear irregularities or recesses have a center line average roughness Ra(X) of 15 nm to 300 nm when scanned in a direction parallel to the linear irregularities or recesses, a center line average roughness Ra(Y) of 20 nm to 600 nm when scanned in a direction perpendicular to the linear irregularities or recesses, and a Ra(X)/Ra(Y) ratio of 0.8 or less.