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:
Jun. 10, 2014
Filed:
Jun. 16, 2011
Daniel Biro, Freiburg, DE;
Benjamin Thaidigsmann, Freiburg, DE;
Florian Clement, Freiburg, DE;
Robert Woehl, Freiburg, DE;
Edgar-allan Wotke, Berlin, DE;
Daniel Biro, Freiburg, DE;
Benjamin Thaidigsmann, Freiburg, DE;
Florian Clement, Freiburg, DE;
Robert Woehl, Freiburg, DE;
Edgar-Allan Wotke, Berlin, DE;
Abstract
A method for producing a metal contact structure of a photovoltaic solar cell, including: applying an electrically non-conductive insulating layer to a semiconductor substrate, applying a metal contact layer to the insulating layer, and generating a plurality of local electrically conductive connections between the semiconductor substrate and the contact layer right through the insulating layer. The metal contact layer is formed using two pastes containing metal particles: the first paste containing metal particles is applied to local regions, and the second paste containing metal particles is applied covering at least the regions covered with the first paste and partial regions located therebetween. By global heating the semiconductor substrate the first paste penetrates the insulating layer and forms an electrically conductive contact directly with the semiconductor substrate, whereas the second paste does not penetrate the insulating layer and is electrically conductively connected to the semiconductor substrate via the first paste.