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Organic hybrid planar-nanocrystalline bulk heterojunctions

United States Patent

April 9, 2013
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A photosensitive optoelectronic device having an improved hybrid planar bulk heterojunction includes a plurality of photoconductive materials disposed between the anode and the cathode. The photoconductive materials include a first continuous layer of donor material and a second continuous layer of acceptor material. A first network of donor material or materials extends from the first continuous layer toward the second continuous layer, providing continuous pathways for conduction of holes to the first continuous layer. A second network of acceptor material or materials extends from the second continuous layer toward the first continuous layer, providing continuous pathways for conduction of electrons to the second continuous layer. The first network and the second network are interlaced with each other. At least one other photoconductive material is interspersed between the interlaced networks. This other photoconductive material or materials has an absorption spectra different from the donor and acceptor materials.
Forrest; Stephen R. (Ann Arbor, MI), Yang; Fan (Piscataway, NJ)
The Trustees of Princeton University (Princeton, NJ), The Regents of the University of Michigan (Ann Arbor, MI)
13/ 011,255
January 21, 2011
UNITED STATES GOVERNMENT RIGHTS This invention was made with U.S. Government support under Grant No. DE-AC3698GO10337 and sub-contract XAT 53363603 awarded by U.S. Department of Energy, National Renewable Energy Laboratory. The government has certain rights to this invention.