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Methods of preparing flexible photovoltaic devices using epitaxial liftoff, and preserving the integrity of growth substrates used in epitaxial growth

United States Patent

February 19, 2013
View the Complete Patent at the US Patent & Trademark Office
There is disclosed methods of making photosensitive devices, such as flexible photovoltaic (PV) devices, through the use of epitaxial liftoff. Also described herein are methods of preparing flexible PV devices comprising a structure having a growth substrate, wherein the selective etching of protective layers yields a smooth growth substrate that us suitable for reuse.
Forrest; Stephen R. (Ann Arbor, MI), Zimmerman; Jeramy (Ann Arbor, MI), Lee; Kyusang (Ann Arbor, MI), Shiu; Kuen-Ting (White Plains, NY)
The Regents of the University of Michigan (Ann Arbor, MI)
12/ 878,261
September 9, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with U.S. Government support under award number W911NF-08-2-0004, awarded by the U.S. Army Research Laboratory, and DE-SC0001013 awarded by the U.S. Department of Energy. The government has certain rights in the invention.