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Organic hybrid planar-nanocrystalline bulk heterojunctions

United States Patent

March 1, 2011
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 University of Southern California (Los Angeles, CA)
11/ 561,448
November 20, 2006
UNITED STATES GOVERNMENT RIGHTS This invention was made with U.S. Government support under Grant No. DE-AC36-98-GO10337 and sub-contract XAT 5-33636-03 awarded by U.S. Department of Energy, National Renewable Energy Laboratory. The government has certain rights in this invention.