Photophysics and dynamics of surface plasmon polaritons-mediated energy transfer in the presence of an applied electric field

Elisabetta Collini, Francesco Todescato, Camilla Ferrante, Renato Bozio, Gregory D. Scholes

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

The possibility to transfer energy between molecular excitons across a metal film up to 150 nm thick represents a very attractive solution to control and improve the performances of thin optoeletronic devices. This process involves the presence of coupled surface plasmon polaritons (SPPs) at the two dielectric-metal interfaces, capable of mediating the interactions between donor and acceptor, located on opposite sides of the metal film. In this Article, the photophysics and the dynamics of an efficient SPP-mediated energy transfer between a suitable dye and a conjugated polymer is characterized by means of steady-state and time-resolved photoluminescence techniques. The process is studied in model multilayer structures (donor/metal/acceptor) as well as in electrically pumped heterostructures (donor/metal cathode/acceptor/anode), to verify the effects of applied electric fields on the efficiency and the dynamics of SPP-mediated energy transfer. A striking enhancement of the overall luminescence was recorded in a particular range of applied bias, suggesting the presence of cooperative effects between optical and electrical stimulations.

Original languageEnglish (US)
Pages (from-to)10061-10070
Number of pages10
JournalJournal of the American Chemical Society
Volume134
Issue number24
DOIs
StatePublished - Jun 20 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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