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Molecular Crystals and Liquid Crystals Volume 584, 2013 - Issue 1: Proceedings of the Advanced Display Materials and Devices 2012 (ADMD 2012)
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Original Articles

High Efficiency Green and Blue Phosphorescent Organic Light-Emitting Diodes Using Pyrroloacridine Type Hole Transport Material

Min Su Park Department of Polymer Science and Engineering, Dankook University Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi, 448-701, Korea
&
Jun Yeob Lee Department of Polymer Science and Engineering, Dankook University Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi, 448-701, Korea
Pages 145-152 | Published online: 16 Dec 2013
 
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Abstract

A high triplet energy hole transport material with pyrroloacridine core was synthesized and the device performances of green and blue phosphorescent organic light-emitting diodes were studied. The pyrroloacridine type hole transport material showed high triplet energy of 2.90 eV for triplet exciton blocking in phosphorescent organic light-emitting diodes. Green and blue PHOLEDs fabricated using the pyrroloacridine core based hole transport layer showed high quantum efficiency of 17.2% and 20.3%, respectively.

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