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:
May. 26, 2015
Filed:
Sep. 07, 2012
Applicant:
Shiuan-leh Lin, Hsinchu, TW;
Inventor:
Shiuan-Leh Lin, Hsinchu, TW;
Assignee:
EPISTAR CORPORATION, Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 31/06 (2012.01); H01L 31/18 (2006.01); H01L 31/0693 (2012.01);
U.S. Cl.
CPC ...
H01L 31/1844 (2013.01); H01L 31/0693 (2013.01); Y02E 10/544 (2013.01);
Abstract
A photovoltaic cell comprises a top subcell having a first band gap; a middle subcell comprising a substrate and having a second band gap, wherein the substrate comprises a first side and a second side opposite to the first side; and a bottom subcell having a third band gap, wherein the top subcell is grown on the first side of the substrate and the bottom subcell is grown on the second side of the substrate, wherein the first band gap is larger than the second band gap and the second band gap is larger than the third band gap.