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|a Thompson, Nicholas J.
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|a Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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|a Massachusetts Institute of Technology. Department of Materials Science and Engineering
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|a Massachusetts Institute of Technology. Energy Frontier Research Center for Excitonics
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|a Thompson, Nicholas J.
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|a Congreve, Daniel Norbert
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|a Baldo, Marc A.
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|a Goldberg, David
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|a Menon, Vinod M.
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|a Congreve, Daniel Norbert
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|a Baldo, Marc A
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|a Slow light enhanced singlet exciton fission solar cells with a 126% yield of electrons per photon
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|b Association for Computing Machinery (ACM),
|c 2014-03-28T15:48:38Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/85952
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|a Singlet exciton fission generates two triplet excitons per absorbed photon. It promises to increase the power extracted from sunlight without increasing the number of photovoltaic junctions in a solar cell. We demonstrate solar cells with an external quantum efficiency of 126% by enhancing absorption in thin films of the singlet exciton fission material pentacene. The device structure exploits the long photon dwell time at the band edge of a distributed Bragg reflector to achieve enhancement over a broad range of angles. Measuring the reflected light from the solar cell establishes a lower bound of 137% for the internal quantum efficiency.
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|a United States. Dept. of Energy. Office of Basic Energy Sciences (Award DE-SC0001088)
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|a National Science Foundation (U.S.). Graduate Research Fellowship Program (Grant 1122374)
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|a Article
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|t Applied Physics Letters
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