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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.:

US 10312385 B1

PDFFull Text
Date of Patent:
Jun. 04, 2019

Filed:

May. 23, 2012

Solar cell substrate made of stainless steel foil and method for manufacturing the same

Applicants:

Yasuhiro Yamaguchi, Tokyo, JP;

Atsutaka Honda, Tokyo, JP;

Naoki Nishiyama, Tokyo, JP;

Tokio Nakada, Fuchu, JP;

Inventors:

Yasuhiro Yamaguchi, Tokyo, JP;

Atsutaka Honda, Tokyo, JP;

Naoki Nishiyama, Tokyo, JP;

Tokio Nakada, Fuchu, JP;

Assignee:

JFE Steel Corporation, Tokyo, JP;

Attorney:

RatnerPrestia

Primary Examiner:

Keith Walker

Assistant Examiner:

John A Hevey

Int. Cl.
CPC ...
C21D 1/30 (2006.01); C21D 1/76 (2006.01); C22C 38/00 (2006.01); C22C 38/18 (2006.01); C22C 38/26 (2006.01); C23C 16/30 (2006.01); C23C 16/56 (2006.01); H01L 31/18 (2006.01); H01L 31/032 (2006.01); H01L 31/0224 (2006.01); H01L 31/0352 (2006.01); H01L 31/0392 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/20 (2006.01); C22C 38/22 (2006.01);
U.S. Cl.
CPC ...
H01L 31/022441 (2013.01); C21D 1/30 (2013.01); C21D 1/76 (2013.01); C22C 38/004 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/18 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/26 (2013.01); C23C 16/305 (2013.01); C23C 16/56 (2013.01); H01L 31/0322 (2013.01); H01L 31/0352 (2013.01); H01L 31/03928 (2013.01); H01L 31/18 (2013.01); H01L 31/1864 (2013.01); Y02E 10/541 (2013.01); Y02P 70/521 (2015.11);
Abstract

Provided are a solar cell substrate made of stainless steel foil which contains 7% to 40% by mass Cr and has a coefficient of linear expansion of 12.0×10/° C. or less at 0° C. to 100° C. and a thickness of 20 μm to 200 μm is subjected to the preparatory heat treatment for stress relief in an atmosphere consisting of one or more selected from an Ngas, an Hgas, an Ar gas, an AX gas, and an HN gas within the range of 250° C. to 1,050° C.; a back-contact made of a Mo layer is formed on a surface of the stainless steel foil subjected to the preparatory heat treatment or an insulating coating is formed on a surface of the stainless steel foil followed by forming the back-contact including the Mo layer thereon; and an absorber layer made of Cu(InGa)Seis formed on the back-contact by performing coating formation heat treatment.

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