Phosphorescence decay mechanism of Ir(ppy)3 in a solid matrix

Kenichi Goshi, Hiroyuki Sasabe, Chihaya Adachi

Research output: Contribution to journalArticle

Abstract

The phosphorescence intensities of the green phosphor fac tris(2-phenylpyridine) iridium [Ir(ppy)3] in a polymethylmethacrylate [PMMA] host matrix are independent of temperature, while the phosphorescence lifetimes increase significantly at temperatures below T ∼ 50 K. In this paper, we propose a phosphorescence decay mechanism for Ir(ppy)3 to rationalize the characteristic temperature dependence of the transient phosphorescence. By comparing a numerical model with the experimental data, we demonstrate that mutual energy transfer between the sub-levels of triplet states can explain the characteristic temperature dependence.

Original languageEnglish
Pages (from-to)47-50
Number of pages4
JournalJournal of Photopolymer Science and Technology
Volume18
Issue number1
DOIs
Publication statusPublished - Jul 25 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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