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:
Apr. 03, 2018
Filed:
Oct. 08, 2015
Applicant:
Sumco Corporation, Minato-ku, Tokyo, JP;
Inventor:
Shigeru Okuuchi, Minato-ku, JP;
Assignee:
SUMCO Corporation, Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/0236 (2006.01); H01L 31/18 (2006.01); H01L 31/0368 (2006.01);
U.S. Cl.
CPC ...
H01L 31/02363 (2013.01); H01L 31/03682 (2013.01); H01L 31/182 (2013.01); H01L 31/1804 (2013.01); Y02E 10/546 (2013.01); Y02E 10/547 (2013.01); Y02P 70/521 (2015.11);
Abstract
Provided is a wafer for solar cell which can be produced using a polycrystalline semiconductor wafer cut out using a bonded abrasive wire, which wafer can be used for manufacturing a solar cell with high conversion efficiency. In a wafer for solar cell before acid texturing of the present invention, produced from a polycrystalline semiconductor wafer cut out using a bonded abrasive wire, an amorphous layer does not exist, and irregularities caused due to the cutting using the bonded abrasive wire are left in at least one surface of the wafer for solar cell.