Plasmon-Enhanced Electron Injection in Dye-Sensitized Solar Cells

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acs.jpcc.5b07660.pdf (1.11 MB)

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https://pubs.acs.org/doi/10.1021/acs.jpcc.5b07660

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https://doi.org/10.1021/acs.jpcc.5b07660
 http://hdl.handle.net/11603/29180

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UMBC Physics Department
UMBC Faculty Collection

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Author/Creator ORCID

https://orcid.org/0000-0002-6370-8765

Date

2015-09-04

Type of Work

journal articles
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Citation of Original Publication

"Ramakrishna, S., Matthew Pelton, Stephen K. Gray, and Tamar Seideman. “Plasmon-Enhanced Electron Injection in Dye-Sensitized Solar Cells.” The Journal of Physical Chemistry C 119, no. 39 (October 1, 2015): 22640–45. https://doi.org/10.1021/acs.jpcc.5b07660. "

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain Mark 1.0

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Abstract

Recent experiments have shown that the efficiency of photoinduced electron transfer from sensitizers (molecules or quantum dots) to semiconductors can be enhanced by coupling the sensitizers to plasmon resonances in metal nanoparticles. Here, we use a model-Hamiltonian approach to show theoretically that there is an optimal coupling between the sensitizer and plasmons that maximizes the electron-transfer efficiency. This optimum results from the competition between electron transfer, plasmon relaxation, and plasmon decoherence. For coupling values that exceed the optimal value, the dynamics of electron transfer from the sensitizer to the semiconductor can be significantly modified due to the sensitizer–plasmon coupling.