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Method of manufacturing a hybrid emitter all back contact solar cell

United States Patent

February 7, 2017
View the Complete Patent at the US Patent & Trademark Office
A method of manufacturing an all back contact solar cell which has a hybrid emitter design. The solar cell has a thin dielectric layer formed on a backside surface of a single crystalline silicon substrate. One emitter of the solar cell is made of doped polycrystalline silicon that is formed on the thin dielectric layer. A second emitter of the solar cell is formed in the single crystalline silicon substrate and is made of doped single crystalline silicon. The method further includes forming contact holes that allow metal contacts to connect to corresponding emitters.
Loscutoff; Paul (Castro Valley, CA), Rim; Seung (Palo Alto, CA)
SunPower Corporation (San Jose, CA)
15/ 067,960
March 11, 2016
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 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.