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:
Feb. 25, 2025
Filed:
Nov. 28, 2023
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Hiroyuki Otsuka, Karuizawa-machi, JP;
Shozo Shirai, Takasaki, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/18 (2006.01); C30B 29/06 (2006.01); C30B 31/08 (2006.01); C30B 31/18 (2006.01); C30B 33/02 (2006.01); H01L 21/22 (2006.01); H01L 21/324 (2006.01); H01L 31/0288 (2006.01); H01L 31/068 (2012.01);
U.S. Cl.
CPC ...
H01L 31/1804 (2013.01); C30B 29/06 (2013.01); C30B 31/08 (2013.01); C30B 31/185 (2013.01); C30B 33/02 (2013.01); H01L 21/22 (2013.01); H01L 21/324 (2013.01); H01L 31/0288 (2013.01); H01L 31/068 (2013.01); H01L 31/1864 (2013.01); Y02E 10/547 (2013.01); Y02P 70/50 (2015.11);
Abstract
A solar cell includes a light-receiving surface electrode formed on a light-receiving surface, a back surface electrode formed on a backside, and a CZ silicon single crystal substrate doped with gallium. The CZ silicon single crystal substrate contains 12 ppm or more oxygen atoms. A spiral oxygen-induced defect is not observed in an EL (electroluminescence) image of the solar cell.