Plasmon-Enhanced Electron Injection in Dye-Sensitized Solar Cells

S. Ramakrishna, Matthew Pelton, Stephen K. Gray, Tamar Seideman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)22640-22645
Number of pages6
JournalJournal of Physical Chemistry C
Volume119
Issue number39
DOIs
StatePublished - Sep 4 2015

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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