Long-range resonant energy transfer for enhanced exciton harvesting for organic solar cells

Shawn R. Scully*, Paul B. Armstrong, Carine Edder, Jean Frechet, Michael D. McGehee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

The harvesting of singlet excitons 23 nm away from the donor-acceptor interface in organic solar cells using long-range resonant energy transfer was reported. The rate of transfer between two chromospheres being proportional and the characteristic distance of transfer being 2-4 nm shows that the excitons can be harvested across a larger distance. The modeled exciton migration shows that the donor-acceptor interface is present at the planar boundaries of the organic film. Three quarters of the excitons are harvested from an organic film when the film thickness is equal to the effective diffusive length and when the spatial generation of excitons is a constant. The results show that exciton are harvested only on the intrinsic migration and subsequent electron transfer at the Red/titania interface.

Original languageEnglish (US)
Pages (from-to)2961-2966
Number of pages6
JournalAdvanced Materials
Volume19
Issue number19
DOIs
StatePublished - Oct 5 2007

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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