Exciton-photon coupling in organic materials with large intersystem crossing rates and strong excited-state molecular relaxation

R. J. Holmes, S. R. Forrest

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

We examine the influence of singlet-triplet intersystem crossing (ISC) and excited-state molecular relaxation on strong exciton-photon coupling in optical microcavities filled with small-molecular-weight organic materials. The effect of ISC is considered by comparing coupling effects in the phosphorescent organic platinum(II) octaethylporphyrin to those in the fluorescent free-base porphyrin tetraphenylporphyrin (TPP). The influence of excited-state molecular relaxation is studied by examining coupling to the Soret band of TPP. Both ISC and excited-state molecular relaxation prevent the population of polariton states under nonresonant optical excitation. The interplay between strong coupling and relaxation processes offers a unique opportunity to directly probe fundamental ultrafast excitonic phenomena. The competition between coupling in microcavities and these processes allows for estimation of their relative transition rates.

Original languageEnglish (US)
Article number235203
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number23
DOIs
StatePublished - Jun 15 2005

Fingerprint Dive into the research topics of 'Exciton-photon coupling in organic materials with large intersystem crossing rates and strong excited-state molecular relaxation'. Together they form a unique fingerprint.

  • Cite this