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BULK HETEROJUNCTION ORGANIC PHOTOVOLTAIC CELLS MADE BY GLANCING ANGLE DEPOSITION

United States Patent Application

20110020979
A1
View the Complete Application at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A method of making a bulk heterojunction organic photovoltaic cell by glancing angle deposition. As the disclosed method relies on a trajectory of incident vapor flux that is not parallel to the substrate normal, micro and nano-scale columnar structures of thin films can be grown on the substrate. There is also disclosed a method of forming a donor-acceptor heterojunction by depositing at least one additional organic material over the columnar structures.
Forrest, Stephen R. (Ann Arbor, MI), Li, Ning (Ann Arbor, MI)
The Regents of the University of Michigan
12/ 843,949
July 27, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0002] This invention was made with U.S. Government support under Contract No. DE-FG36-08G018022 awarded by U.S. Department of Energy, National Renewable Energy Laboratory. The government has certain rights in this invention.