Blue organic electrophosphorescence using exothermic host-guest energy transfer

R. J. Holmes, S. R. Forrest, Y. J. Tung, R. C. Kwong, J. J. Brown, S. Garon, M. E. Thompson

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Efficient blue electrophosphorescence produced using exothermic energy transfer from a host of N,N-dicarbazolyl-3,5-benzene (mCP) to a phosphorescent iridium complex was studied. The temperature dependence of the radiative lifetime and the photoluminescence of a mCP film doped with the iridium complex was examined. By employing exothermic energy transfer, a maximum external electroluminescent quantum efficiency of (7.5±0.8)% was obtained.

Original languageEnglish (US)
Pages (from-to)2422-2424
Number of pages3
JournalApplied Physics Letters
Issue number15
StatePublished - Apr 14 2003


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