Applied Physics B

, Volume 81, Issue 1, pp 93–99

Energy transfer in a thin film of TPD fluorescent molecules doped with PtOEP and Ir(ppy)3 phosphorescent molecules


DOI: 10.1007/s00340-005-1850-1

Cite this article as:
Tsuboi, T., Murayama, H. & Penzkofer, A. Appl. Phys. B (2005) 81: 93. doi:10.1007/s00340-005-1850-1


A thin film of triphenylamine dimer, N,N′-bis(3-methylphenyl)-N,N′-bis(phenyl)-benzidine (TPD), doped with fac tris(2-phenylpyridine) iridium (Ir(ppy)3) and platinum octaethyl porphine (PtOEP) is characterized by photoluminescence emission measurements at several excitation wavelengths and photoluminescence excitation measurements at relevant emission wavelengths in the temperature range from 10 K to room temperature. The investigated film is a phosphorescent OLED material with singlet absorbing host (TPD) and triplet emitting guests [Ir(ppy)3 and PtOEP]. At short wavelength excitation simultaneous triple band emission from singlet TPD, triplet Ir(ppy)3 and TPD, and from triplet PtOEP is observed. Förster-type singlet-singlet state energy transfer from TPD to Ir(ppy)3 and PtOEP, intra-component intersystem crossing, and Dexter-type triplet-triplet energy transfer between the substituents are studied.


42.70 JK33.50-j33.50 Dq

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Faculty of EngineeringKyoto Sangyo UniversityKyotoJapan
  2. 2.Institut II—Experimentelle und Angewandte PhysikUniversität RegensburgRegensburgGermany