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Proceedings Paper

Highly efficient blue phosphorescent OLEDs using large bandgap host materials
Author(s): Fu-Chuan Fang; Yuan-Li Liao; Ken-Tsung Wong; Ming-Han Tsai; Hao-Wu Lin; Hai-Ching Su; Chung-chih Wu; Chih-I Wu
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Paper Abstract

The synthesis and properties of 3,6-bis(triphenylsilyl)carbazole as an effective host material for blue electrophosphorescence are reported. The electrochemically active C3 and C6 sites of carbazole are non-conjugated blocked with the steric, bulky and large-gap triphenylsilyls, the resulting new compound retains the large triplet energy of carbazole yet exhibits much enhanced morphological stability and electrochemical stability in comparison with previous carbazole-based host materials. Using this new host material, blue phosphorescent OLEDs having high efficiencies up to 16%, 30.6 cd/A and 26.7 lm/W are demonstrated.

Paper Details

Date Published: 20 April 2006
PDF: 8 pages
Proc. SPIE 6192, Organic Optoelectronics and Photonics II, 61921R (20 April 2006);
Show Author Affiliations
Fu-Chuan Fang, National Taiwan Univ. (Taiwan)
Yuan-Li Liao, National Taiwan Univ. (Taiwan)
Ken-Tsung Wong, National Taiwan Univ. (Taiwan)
Ming-Han Tsai, National Taiwan Univ. (Taiwan)
Hao-Wu Lin, National Taiwan Univ. (Taiwan)
Hai-Ching Su, National Taiwan Univ. (Taiwan)
Chung-chih Wu, National Taiwan Univ. (Taiwan)
Chih-I Wu, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 6192:
Organic Optoelectronics and Photonics II
Paul L. Heremans; Michele Muccini; Eric A. Meulenkamp, Editor(s)

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