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Organic photovoltaic cells utilizing ultrathin sensitizing layer

United States Patent

May 24, 2011
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A photosensitive device includes a series of organic photoactive layers disposed between two electrodes. Each layer in the series is in direct contact with a next layer in the series. The series is arranged to form at least one donor-acceptor heterojunction, and includes a first organic photoactive layer comprising a first host material serving as a donor, a thin second organic photoactive layer comprising a second host material disposed between the first and a third organic photoactive layer, and the third organic photoactive layer comprising a third host material serving as an acceptor. The first, second, and third host materials are different. The thin second layer serves as an acceptor relative to the first layer or as a donor relative to the third layer.
Rand; Barry P. (Princeton, NJ), Forrest; Stephen R. (Princeton, NJ)
The Trustees of Princeton University (Princeton, NJ)
11/ 263,865
November 2, 2005
UNITED STATES GOVERNMENT RIGHTS This invention was made with U.S. Government support under Contract No. 339-4012 awarded by U.S. Department of Energy, National Renewable Energy Laboratory. The government has certain rights in this invention.