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Proceedings Paper

Bipolar host materials for red and green phosphorescent OLED
Author(s): Jang Hyuk Kwon; Tae Jin Park; Woo Sik Jeon; Jung Joo Park
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Paper Abstract

We report novel bipolar host materials for high efficiency red and green phosphorescent OLEDs (PHOLEDs). Phenyl moieties were inserted in a 4,4'-N,N'-dicarbazolebipheyl (CBP) compound to provide much easier electron injection and to increase electron mobility. The efficiency increase and voltage reduction by this modification were observed in red and green PHOLEDs. At a given constant luminance of 1000 cd/m2, the power efficiency was enhanced at least by twenty percent in the general red and green PHOLED devices.

Paper Details

Date Published: 19 November 2007
PDF: 8 pages
Proc. SPIE 6828, Light-Emitting Diode Materials and Devices II, 682802 (19 November 2007); doi: 10.1117/12.765378
Show Author Affiliations
Jang Hyuk Kwon, Kyung Hee Univ. (South Korea)
Tae Jin Park, Kyung Hee Univ. (South Korea)
Woo Sik Jeon, Kyung Hee Univ. (South Korea)
Jung Joo Park, Kyung Hee Univ. (South Korea)

Published in SPIE Proceedings Vol. 6828:
Light-Emitting Diode Materials and Devices II
Jian Wang; Changhee Lee; Hezhou Wang, Editor(s)

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