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Organic photovoltaic devices comprising solution-processed substituted metal-phthalocyanines and exhibiting near-IR photo-sensitivity

United States Patent

November 29, 2016
View the Complete Patent at the US Patent & Trademark Office
Organic photovoltaic (OPV) devices are disclosed. An exemplary device has first and second electrodes and an organic, photovoltaically active zone located between the first and second electrodes. The photovoltaically active zone includes an organic electron-donor material and an organic electron-acceptor material. The electron-donor material includes one or more trivalent- or tetravalent-metal phthalocyanines with alkylchalcogenide ring substituents, and is soluble in at least one organic solvent. This solubility facilitates liquid-processability of the donor material, including formation of thin-films, on an unlimited scale to form planar and bulk heterojunctions in organic OPVs. These donor materials are photovoltaically active in both visible and near-IR wavelengths of light, enabling more of the solar spectrum, for example, to be applied to producing electricity. Also disclosed are methods for producing the metalated phthalocyanines and actual devices.
McGrath; Dominic V. (Tucson, AZ), Mayukh; Mayank (Tucson, AZ), Placencia; Diogenes (Bronx, NY), Armstrong; Neal R. (Tucson, AZ)
The Arizona Board of Regents of behalf of the University of Arizona (Tuscon, AZ)
13/ 635,324
April 11, 2011
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT This invention was made with government support under grant number CHE0719437 awarded by the National Science Foundation and grant number DE-SC0001084 awarded by the U.S. Department of Energy. The U.S. government has certain rights in the invention.