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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 9774294 B1

PDFFull Text
Date of Patent:
Sep. 26, 2017

Filed:

Aug. 18, 2016

Preventing harmful polarization of solar cells

Applicant:

Sunpower Corporation, San Jose, CA (US);

Inventors:

Richard M. Swanson, Los Altos Hills, CA (US);

Denis De Ceuster, Woodside, CA (US);

Vikas Desai, Cupertino, CA (US);

Douglas H. Rose, San Jose, CA (US);

David D. Smith, Campbell, CA (US);

Neil Kaminar, Santa Cruz, CA (US);

Assignee:

SunPower Corporation, San Jose, CA (US);

Attorney:

Okamoto & Benedicto LLP

Primary Examiner:

Jayne Mershon

Int. Cl.
CPC ...
H01L 31/042 (2014.01); H02S 40/32 (2014.01); H01L 31/0216 (2014.01); H01L 31/0224 (2006.01); H01L 31/048 (2014.01); H01L 31/05 (2014.01); H01L 31/18 (2006.01); H01L 31/049 (2014.01); H02S 30/10 (2014.01); H02S 40/36 (2014.01); H02J 3/38 (2006.01); H02J 3/46 (2006.01);
U.S. Cl.
CPC ...
H02S 40/32 (2014.12); H01L 31/02167 (2013.01); H01L 31/02168 (2013.01); H01L 31/022466 (2013.01); H01L 31/048 (2013.01); H01L 31/049 (2014.12); H01L 31/0504 (2013.01); H01L 31/0516 (2013.01); H01L 31/18 (2013.01); H02J 3/383 (2013.01); H02J 3/46 (2013.01); H02S 30/10 (2014.12); H02S 40/36 (2014.12); Y02B 10/12 (2013.01); Y02B 10/14 (2013.01); Y02E 10/52 (2013.01); Y02E 10/547 (2013.01); Y10T 29/49117 (2015.01);
Abstract

In one embodiment, harmful solar cell polarization is prevented or minimized by providing a conductive path that bleeds charge from a front side of a solar cell to the bulk of a wafer. The conductive path may include patterned holes in a dielectric passivation layer, a conductive anti-reflective coating, or layers of conductive material formed on the top or bottom surface of an anti-reflective coating, for example. Harmful solar cell polarization may also be prevented by biasing a region of a solar cell module on the front side of the solar cell.

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