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ENHANCED BULK HETEROJUNCTION DEVICES PREPARED BY THERMAL AND SOLVENT VAPOR ANNEALING PROCESSES

United States Patent Application

*** PATENT GRANTED ***
20130210189
9,768,402
A1
View the Complete Application at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A method of preparing a bulk heterojunction organic photovoltaic cell through combinations of thermal and solvent vapor annealing are described. Bulk heterojunction films may prepared by known methods such as spin coating, and then exposed to one or more vaporized solvents and thermally annealed in an effort to enhance the crystalline nature of the photoactive materials.
Forrest, Stephen R. (Ann Arbor, MI), Thompson, Mark E. (Anaheim, CA), Wei, Guodan (San Jose, CA), Wang, Siyi (Los Angeles, CA)
The University of Southern California, The Regents of the University of Michigan
13/ 080,759
April 6, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0002] The subject matter of this application was prepared with U.S. Government support under Contract No. DE-FG36-08GO18022 awarded by U.S. Department of Energy, National Renewable Energy Laboratory. The government has certain rights in the subject matter of this application.