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:
Jan. 17, 2017
Filed:
Dec. 16, 2009
Peter Engelhart, Hameln, DE;
Sven Wanka, Leipzig, DE;
Wilhelmus Mathijs Marie Kessels, Tilburg, NL;
Gijs Dingemans, Tilburg, NL;
Peter Engelhart, Hameln, DE;
Sven Wanka, Leipzig, DE;
Wilhelmus Mathijs Marie Kessels, Tilburg, NL;
Gijs Dingemans, Tilburg, NL;
Q-CELLS SE, , DE;
Abstract
A solar cell includes a semiconductor layer, a collecting layer for collecting free charge carriers from the semiconductor layer and a buffer layer which is arranged between the semiconductor layer and the collecting layer. The buffer layer is designed as a tunnel contact between the semiconductor layer and the collecting layer. The buffer layer essentially includes a material with a surface charge density of at least 10cm, preferably of at least 5×10cm, and more preferably of at least 10cm.