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. 14, 2016
Filed:
Oct. 24, 2013
Applicant:
Tsmc Solar Ltd., Taichung, TW;
Inventors:
Tzu-Huan Cheng, Kaohsiung, TW;
Chia-Hung Tsai, Kaohsiung, TW;
Assignee:
TSMC Solar Ltd., Taichung, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01); H01L 31/032 (2006.01); H01L 31/0216 (2014.01); H01L 31/0224 (2006.01); H01L 31/0749 (2012.01); H01L 31/18 (2006.01);
U.S. Cl.
CPC ...
H01L 31/0322 (2013.01); H01L 31/02167 (2013.01); H01L 31/022425 (2013.01); H01L 31/0749 (2013.01); H01L 31/1864 (2013.01); H01L 31/1868 (2013.01); Y02E 10/541 (2013.01); Y02P 70/521 (2015.11);
Abstract
A method includes depositing spacers at a plurality of locations directly on a back contact layer over a solar cell substrate. An absorber layer is formed over the back contact layer and the spacers. The absorber layer is partially in contact with the spacers and partially in direct contact with the back contact layer. The solar cell substrate is heated to form voids between the absorber layer and the back contact layer at the locations of the spacers.