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:
Sep. 10, 2019
Filed:
Jun. 27, 2017
Applicant:
Csi Cells Co., Ltd., Suzhou Jiangsu, CN;
Inventors:
Assignee:
CSI CELLS CO., LTD., , CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/0236 (2006.01); B08B 3/08 (2006.01); H01L 31/028 (2006.01); H01L 31/18 (2006.01);
U.S. Cl.
CPC ...
H01L 31/02363 (2013.01); B08B 3/08 (2013.01); H01L 31/0284 (2013.01); H01L 31/1804 (2013.01); H01L 31/186 (2013.01); Y02E 10/547 (2013.01); Y02P 70/521 (2015.11);
Abstract
A method for producing a textured structure of a crystalline silicon solar cell is provided, including the following steps: (1) forming a porous layer structure on a surface of a silicon wafer; (2) then cleaning with a first alkaline chemical solution; (3) removing residual metal particles with a cleaning solution; (4) and then etching the surface with a first chemical etching solution to obtain the textured structure of the crystalline silicon solar cell. The method greatly prolongs the lifetime of the mixed solution of hydrofluoric acid and nitric acid and ensures the stability and uniformity of the textured structure.