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Method of fabricating a back-contact solar cell and device thereof

United States Patent

9,406,821
August 2, 2016
View the Complete Patent at the US Patent & Trademark Office
Methods of fabricating back-contact solar cells and devices thereof are described. A method of fabricating a back-contact solar cell includes forming an N-type dopant source layer and a P-type dopant source layer above a material layer disposed above a substrate. The N-type dopant source layer is spaced apart from the P-type dopant source layer. The N-type dopant source layer and the P-type dopant source layer are heated. Subsequently, a trench is formed in the material layer, between the N-type and P-type dopant source layers.
Li; Bo (San Jose, CA), Smith; David (Campbell, CA), Cousins; Peter (Menlo Park, CA)
SunPower Corporation (San Jose, CA)
14/ 314,938
20140305501
June 25, 2014
The invention described herein was made with Governmental support under contract number DE-FC36-07GO17043 awarded by the United States Department of Energy. The Government may have certain rights in the invention.