Electronic Relaxation Processes in the T1 State of Phosphorescent fac-Tris(2-phenylpyridine) Iridium Molecule in 4,4'-N,N'-Dicarbazole-biphenyl Host
- 1 February 2008
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 47 (2S) , 1266
- https://doi.org/10.1143/jjap.47.1266
Abstract
We have analyzed the time-resolved photoluminescence spectra of fac-tris(2-phenylpyridine) iridium [Ir(ppy)3] doped in 4,4'-N,N'-dicarbazole-biphenyl (CBP) using the spin–phonon relaxation processes among three zero-field splitting substates of the T1 triplet state under the Franck–Condon principle. Good agreement was obtained between the calculated and measured results regarding temperature dependence of three decay components, red peak shift during time evolution at 5 K, and luminescence line shape with vibronic structure.Keywords
This publication has 10 references indexed in Scilit:
- Energy transfer between organic fluorescent CBP host and blue phosphorescent FIrpic and FIrN4 guestsOptical Materials, 2007
- Decay dynamics of photo-luminescence in tris(2-phenylpyridine)iridium phosphorJournal of Luminescence, 2007
- Phosphorescence Decay Process of Ir(ppy)3 : Temperature Dependence of Decay TimeJapanese Journal of Applied Physics, 2005
- Comparison of Phosphorescence Properties of Green-Emitting Ir(ppy)3and Red-Emitting Btp2Ir(acac)Japanese Journal of Applied Physics, 2004
- Emission of Ir(ppy)3. Temperature dependence, decay dynamics, and magnetic field propertiesChemical Physics Letters, 2003
- Optical characteristics of PtOEP and Ir(ppy)3 triplet-exciton materials for organic electroluminescence devicesThin Solid Films, 2003
- Phosphorescent materials for application to organic light emitting devicesPure and Applied Chemistry, 1999
- Enhanced order and electronic delocalization in conjugated polymers oriented by gel processing in polyethylenePhysical Review B, 1991
- Franck–Condon analysis of the 1 1A g→1 1B u absorption in linear polyenes with two through six double bondsThe Journal of Chemical Physics, 1981
- Characterization of electronic transitions in complex moleculesDiscussions of the Faraday Society, 1950