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Fused thiophene-based conjugated polymers and their use in optoelectronic devices

United States Patent

November 3, 2015
View the Complete Patent at the US Patent & Trademark Office
The present teachings relate to certain polymeric compounds and their use as organic semiconductors in organic and hybrid optical, optoelectronic, and/or electronic devices such as photovoltaic cells, light emitting diodes, light emitting transistors, and field effect transistors. The disclosed compounds can provide improved device performance, for example, as measured by power conversion efficiency, fill factor, open circuit voltage, field-effect mobility, on/off current ratios, and/or air stability when used in photovoltaic cells or transistors. The disclosed compounds can have good solubility in common solvents enabling device fabrication via solution processes.
Facchetti; Antonio (Chicago, IL), Marks; Tobin J. (Evanston, IL), Takai; Atsuro (Evanston, IL), Seger; Mark (Chicago, IL), Chen; Zhihua (Skokie, IL)
Northwestern University (Evanston, IL), Polyera Corporation (Skokie, IL)
14/ 520,304
October 21, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under grant number DE-SC0001059 awarded by the Department of Energy. The government has certain rights in the invention.