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Title: Plasmon-enhanced electron injection in dye-sensitized solar cells

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 be- tween 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 dy- namics of electron transfer from the sensitizer to the semiconductor can be significantly modified due to the sensitizer-plasmon coupling.
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Publication Date:
OSTI Identifier:
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Physical Chemistry. C; Journal Volume: 119; Journal Issue: 39
American Chemical Society
Research Org:
Argonne National Laboratory (ANL)
Sponsoring Org:
USDOE Office of Science - Office of Basic Energy Sciences; National Science Foundation (NSF)
Country of Publication:
United States