Temperature measurements of a phosphorescent organic light-emitting diode by Raman spectroscopy

Hiroya Tsuji, Yukio Furukawa

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We have observed the Raman spectrum of an operating phosphorescent organic light-emitting diode fabricated with bis(2-(2′-benzothienyl)-pyridinato-N,C3′)iridium(acetylacetonate) (Btp2Ir(acac)) as a phosphorescent emitter with excitation at 532 nm. All of the observed bands have been attributed to Btp2Ir(acac) because of the resonance Raman effect. We have determined the temperature of the emitting layer containing Btp2Ir(acac) from the ratio of the anti-Stokes to Stokes Raman bands of the 283-cm-1 vibrational mode attributed to Btp2Ir(acac). The temperature of the emitting layer is estimated to be 89 ± 8 °C at a current density of 400 A/m2.

Original languageEnglish
Pages (from-to)206-208
Number of pages3
JournalChemical Physics Letters
Volume488
Issue number4-6
DOIs
Publication statusPublished - 2010 Mar 22

ASJC Scopus subject areas

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

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