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:
Jul. 26, 2016
Filed:
Sep. 01, 2011
Sumit Chaudhary, Ames, IA (US);
Kai-ming Ho, Ames, IA (US);
Joong-mok Park, Ames, IA (US);
Kanwar Singh Nalwa, Hillsboro, OR (US);
Wai Y. Leung, Ames, IA (US);
Sumit Chaudhary, Ames, IA (US);
Kai-Ming Ho, Ames, IA (US);
Joong-Mok Park, Ames, IA (US);
Kanwar Singh Nalwa, Hillsboro, OR (US);
Wai Y. Leung, Ames, IA (US);
Iowa State University Research Foundation, Inc., Ames, IA (US);
Abstract
A three-dimensional, microscale-textured, grating-shaped organic solar cell geometry. The solar cells are fabricated on gratings to give them a three-dimensional texture that provides enhanced light absorption. Introduction of microscale texturing has a positive effect on the overall power conversion efficiency of the devices. This grating-based solar cell having a grating of pre-determined pitch and height has shown improved power-conversion efficiency over a conventional flat solar cell. The improvement in efficiency is accomplished by homogeneous coverage of the grating with uniform thickness of the active layer, which is attributed to a sufficiently high pitch and low height of the underlying gratings. Also the microscale texturing leads to suppressed reflection of incident light due to the efficient coupling of the incident light into modes that are guided in the active layer.