Using resonance energy transfer to improve exciton harvesting in organic-inorganic hybrid photovoltaic cells

Yuxiang Liu, Melissa A. Summers, Carine Edder, Jean Frechet, Michael D. McGehee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

149 Scopus citations

Abstract

The use of resonance energy transfer (RET) to transport excitons in organic photovoltaic cells from the light-absorbing donor layer to the acceptor layer was discussed. The method places excitons right at the donor/acceptor (D/A) interface, where they can be split by hole transfer. The method is faster than exciton diffusion and enables harvesting of excitons before germinate recombination occurs. The method also provides a mechanism for excitons to overcome low-energy sites in the absorbing layer that could prevent them from diffusing to the D/A interface. It is found that RET strategy is essential to efficiently harvesting excitons in many types of bulk heterojunction PV cells.

Original languageEnglish (US)
Pages (from-to)2960-2964
Number of pages5
JournalAdvanced Materials
Volume17
Issue number24
DOIs
StatePublished - Dec 16 2005

ASJC Scopus subject areas

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

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