Study of the exciton relaxation and recombination processes of a heteromolecular interface fabricated by a molecular superlattice growth technique

Nobuya Hiroshiba, Kenta Morimoto, Ryoma Hayakawa, Toyohiro Chikyow, Yutaka Wakayama, Kiyoto Matsuishi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The temperature dependences of the photoluminescence (PL) spectra of N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8)/ Quaterrylene (QT) heteromolecular thin film and neat-PTCDI-C8 thin film were investigated to elucidate the effects of a heteromolecular interface on exciton relaxation and recombination processes. The PL spectra were deconvoluted into six components related to Frenkel, two charge-transfer (CT), and excimer exciton states. With the heteromolecular thin film, we found the behavior of the CT excitons to be intriguingly different in terms of luminous efficiency and temperature dependence from that of the Frenkel exciton. In this Letter, we provide detailed analyses of the exciton relaxation and recombination processes at a heteromolecular interface.

Original languageEnglish
Pages (from-to)227-230
Number of pages4
JournalChemical Physics Letters
Volume512
Issue number4-6
DOIs
Publication statusPublished - 2011 Aug 25
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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