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:
Sep. 11, 2012
Filed:
Apr. 27, 2006
Masaki Shima, Uji, JP;
Masaki Shima, Uji, JP;
SANYO Electric Co., Ltd., Moriguchi-Shi, JP;
Abstract
An aspect of the present invention provides a stacked photovoltaic device that comprises a first power generating unit including a first semiconductor layer made of a substantially intrinsic non-single crystal semiconductor layer which functions as a photoelectric conversion layer; and a second power generating unit formed above the first power generating unit, the second power generating unit including a second semiconductor layer made of a substantially intrinsic non-crystalline semiconductor layer which functions as a photoelectric conversion layer. In the stacked photovoltaic device, a first density of an element mainly constituting the first semiconductor layer of the first power generating unit is lower than a second density of an element mainly constituting the second semiconductor layer of the second power generating unit.