Luminescence lifetimes in halogen bridged mixed valence metal complexes

Y. Wada, K. Era, M. Yamashita

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Lifetimes of the luminescences from the self-trapped states of the charge transfer excitons in halogen bridged mixed valence metal complexes have been measured. The lifetimes of [Pt(en)2Br2][Pd(en)2](ClO4)4, [Pt(en)2Cl2][Pd(en)2](ClO4)4 and [Pt(chxn)2Cl2][Pt(chxn)2](ClO4)4 are 300±20 psec, 100±20 psec and 120± 20 psec, respectively. These values are from one to two orders of magnitude shorter than the radiative lifetimes estimated from the oscillator strengths of the free excitons. This indicates that nonradiative decay processes determine the lifetimes of the self- trapped excitons in these complexes. The lifetime of the hot- luminescence in the lattice relaxation process of the charge transfer exciton in [Pt(en)2Br2][Pd(en)2](ClO4)4 is less than 30 psec.

Original languageEnglish
Pages (from-to)953-956
Number of pages4
JournalSolid State Communications
Volume67
Issue number10
DOIs
Publication statusPublished - 1988 Sep
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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