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:
Aug. 26, 2014
Filed:
Dec. 30, 2011
Chandrashekhar S. Khadilkar, Broadview Heights, OH (US);
Srinivasan Sridharan, Strongsville, OH (US);
Nazarali Merchant, San Diego, CA (US);
Jackie Davis, Cleveland, OH (US);
Aziz S. Shaikh, San Diego, CA (US);
Hong Jiang, Irvine, CA (US);
Chandrashekhar S. Khadilkar, Broadview Heights, OH (US);
Srinivasan Sridharan, Strongsville, OH (US);
Nazarali Merchant, San Diego, CA (US);
Jackie Davis, Cleveland, OH (US);
Aziz S. Shaikh, San Diego, CA (US);
Hong Jiang, Irvine, CA (US);
Heraeus Precious Metals North America Conshohocken LLC, West Conshohocken, PA (US);
Abstract
Solar cell contacts having good electrical performance are made by a process involving: (a) providing a silicon wafer substrate; (b) providing a paste comprising: (i) aluminum, (ii) glass frit, and (iii) a separate and distinct amount of at least one oxide, such that, together with the aluminum, the glass frit and oxide forms a paste having an exothermic reaction peak, at a temperature of at least 660° C. to less than 900° C., (c) applying the paste to the silicon wafer substrate to form a coated substrate, and (d) firing the coated substrate for a time and at a temperature sufficient to sinter the aluminum and fuse the glass frit and oxide.