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:
May. 24, 2005
Filed:
Jan. 21, 2003
Milfred Dale Hammerbacher, Waterloo, CA;
Gary Don Stevens, Kitchener, CA;
Paul Ray Sharrock, Cambridge, CA;
Aline Wullur, Kitchener, CA;
Frederic Rivollier, Kitchener, CA;
Milfred Dale Hammerbacher, Waterloo, CA;
Gary Don Stevens, Kitchener, CA;
Paul Ray Sharrock, Cambridge, CA;
Aline Wullur, Kitchener, CA;
Frederic Rivollier, Kitchener, CA;
Spheral Solar Power, Inc., Cambridge, CA;
Abstract
A method of fabricating a photovoltaic solar cell is provided. A plurality of generally spherical semiconductor elements are provided. Each of the semiconductor elements has a core and an outer surface surface forming a p-n junction. An anti-reflection coating is deposited on the outer surface of each of the semiconductor elements and each of the semiconductor elements is bonded into a perforated aluminum foil array thereby providing ohmic contact to a first side of the p-n junction. The anti-reflection coating is removed from a portion of each of the semiconductor elements and then the core is exposed, thereby allowing ohmic contact to be made to a second side of the p-n junction.