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:
Jan. 13, 2015
Filed:
Dec. 27, 2010
Applicants:
Kazuaki Sasaki, Osaka, JP;
Takaaki Agui, Osaka, JP;
Inventors:
Kazuaki Sasaki, Osaka, JP;
Takaaki Agui, Osaka, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 31/0304 (2006.01); H01L 31/0687 (2012.01); H01L 31/18 (2006.01);
U.S. Cl.
CPC ...
H01L 31/03046 (2013.01); H01L 31/06875 (2013.01); H01L 31/1844 (2013.01); Y02E 10/544 (2013.01);
Abstract
Disclosed is a multijunction compound semiconductor solar cell having a buffer layer between a first cell and a second cell. In the buffer layer, a plurality of semiconductor layers is arranged such that lattice constants thereof have larger values in order from the first cell side to the second cell side. Of the plurality of semiconductor layers, two layers having the largest difference in lattice constant among each two adjacent layers are disposed closer to the first cell than the center in the thickness direction of the buffer layer.