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.

Date of Patent:
May. 08, 2018

Filed:

May. 18, 2015
Applicant:

E I Du Pont DE Nemours and Company, Wilmington, DE (US);

Inventors:

Elena V Rogojina, San Jose, CA (US);

Gonghou Wang, Foster City, CA (US);

Elizabeth Tai, Cupertino, CA (US);

Maxim Kelman, Mountain View, CA (US);

Assignee:

E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/042 (2014.01); H01L 31/0224 (2006.01); H01B 1/02 (2006.01); B23K 35/02 (2006.01); B23K 35/26 (2006.01); B23K 35/28 (2006.01); C22C 13/00 (2006.01); C22C 21/00 (2006.01);
U.S. Cl.
CPC ...
H01L 31/0224 (2013.01); B23K 35/025 (2013.01); B23K 35/262 (2013.01); B23K 35/288 (2013.01); C22C 13/00 (2013.01); C22C 21/003 (2013.01); H01B 1/023 (2013.01);
Abstract

The present invention is directed to a paste composition comprising Al and Sn dispersed in an organic medium and to paste compositions that provide a solderable electrode. The present invention is further directed to an electrode formed from the paste composition and a semiconductor device and, in particular, a solar cell comprising such an electrode. The paste compositions that provide a solderable electrode are particularly useful for forming a solar cell back side solderable electrode.


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