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Proceedings Paper

Effects of triplet energy confinement by charge transporting layers on blue phosphorescent organic light emitting diodes
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Paper Abstract

We have studied the effects of hole transporting layers and electron transporting layers on efficiencies of Iridium(III)bis [(4,6-di-fluorophenyl)-pyridinato-N,C2'] picolinate (FIrpic) doped 3,5'-N,N'-dicarbazole-benzene (mCP) host blue PHOLEDs. We found that the device efficiency is very sensitive to the hole transporting materials used and both the triplet energy and carrier transport properties affect the device efficiency. On the other hand, there is no apparent correlation between the device efficiency and the triplet energy of the electron transporting material used. Instead, the device efficiency appears to be determined by the electron mobility of the electron transporting layer only.

Paper Details

Date Published: 9 September 2008
PDF: 4 pages
Proc. SPIE 7051, Organic Light Emitting Materials and Devices XII, 70511T (9 September 2008); doi: 10.1117/12.798125
Show Author Affiliations
Jaewon Lee, Univ. of Florida (United States)
Neetu Chopra, Univ. of Florida (United States)
Sang-Hyun Eom, Univ. of Florida (United States)
Ying Zheng, Univ. of Florida (United States)
Jiangeng Xue, Univ. of Florida (United States)
Franky So, Univ. of Florida (United States)

Published in SPIE Proceedings Vol. 7051:
Organic Light Emitting Materials and Devices XII
Franky So; Chihaya Adachi, Editor(s)

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