3,3'-Bicarbazole-based host materials for high-efficiency blue phosphorescent OLEDs with extremely low driving voltage

Hisahiro Sasabe; Naoki Toyota; Hiromi Nakanishi; Tasuku Ishizaka; Yong-Jin Pu; Junji Kido

doi:10.1002/adma.201200848

3,3'-Bicarbazole-based host materials for high-efficiency blue phosphorescent OLEDs with extremely low driving voltage

Adv Mater. 2012 Jun 26;24(24):3212-7. doi: 10.1002/adma.201200848. Epub 2012 May 29.

Authors

Hisahiro Sasabe¹, Naoki Toyota, Hiromi Nakanishi, Tasuku Ishizaka, Yong-Jin Pu, Junji Kido

Affiliation

¹ Department of Organic Device Engineering, Research Center for Organic Electronics, Yamagata university, Yonezawa, Japan. [email protected]

PMID: 22641472
DOI: 10.1002/adma.201200848

Abstract

Four types of functionalized 3,3'-bicarbazole derivatives are prepared and investigated as a host material for blue phosphorescent OLEDs. By using a 3,3'-bicarbazole derivative/FIrpic film as an emissive layer, high power efficiency of 46 lm W(-1) (45 cd A(-1), EQE 20%) with an extremely low driving voltage at 3.1 V is obtained at 100 cd m(-2).

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbazoles / chemistry*
Color
Electric Conductivity
Luminescent Agents / chemistry*
Semiconductors*

Substances

Carbazoles
Luminescent Agents