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. 30, 2002
Filed:
May. 17, 2000
Hodaka Norimatsu, Osaka, JP;
Masahiro Hirata, Osaka, JP;
Akira Fujisawa, Osaka, JP;
Tsuyoshi Otani, Osaka, JP;
Yukio Sueyoshi, Osaka, JP;
Other;
Abstract
A transparent substrate, a transparent conductive film, photoelectric conversion units, and a back electrode are stacked sequentially from a side on which light is incident. Further, intermediate films are formed between the transparent substrate and the transparent conductive film. The intermediate films are formed so that the relationship of R <R ×0.8 is satisfied, wherein R represents an average reflectance in a wavelength region between (&lgr;−50) nm and (&lgr;+50) nm, where &lgr; (nm) represents a wavelength of the light allowing the photoelectric conversion units to have an optimal spectral sensitivity characteristic, and R denotes an average reflectance, in the wavelength region, of the photoelectric conversion device that does not include the intermediate film. In a tandem-type device including plural photoelectric conversion units, intermediate films are formed so that the average reflectance in the wavelength range is decreased in each photoelectric conversion unit. Thus, the conversion efficiency of the photoelectric conversion device is improved.