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:
Oct. 25, 2011
Filed:
Aug. 03, 2010
Lawrence A. Clevenger, LaGrangeville, NY (US);
Harold J. Hovel, Katonah, NY (US);
Rainer K. Krause, Mainz-Kostheim, DE;
Kevin M. Prettyman, Poughkeepsie, NY (US);
Lawrence A. Clevenger, LaGrangeville, NY (US);
Harold J. Hovel, Katonah, NY (US);
Rainer K. Krause, Mainz-Kostheim, DE;
Kevin M. Prettyman, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Processes for fabricating a contact grid for a photovoltaic cell generally includes providing a photovoltaic cell having an antireflective coating disposed on a sun facing side, the photovoltaic cell comprising a silicon substrate having a p-n junction; soft stamping a pattern of a UV sensitive photoresist and/or polymer onto the antireflective coating; exposing the UV sensitive photoresist and/or polymer to ultraviolet radiation to cure the UV sensitive photoresist and/or polymer; etching the pattern to form openings in the antireflective coating that define the contact grid; stripping the UV sensitive photoresist and/or polymer; and depositing a conductive metal into the openings defined by the pattern. The metal based paste can be aluminum based, which can be annealed at a relatively low temperature.