Electroluminescence devices of a new kind of rare earth complex: TbY(o-MOBA)6 (phen)2·2H2O

Xiu Fang Li*, Zhen Bo Deng, Yumeng Shi, Zheng Chen, Jing Xiao, Rui Fen Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A new kind of rare earth (RE) complex TbY(o-MOBA)6(phen)2·2H2O was synthesized, which was used as an emitting material in electroluminescence. The material was doped into poly N-vinylcarbazole (PVK) as the emitting layer, and two kinds of devices were fabricated with the structures: 1) ITO/PVK:RE complex/LiF/Al; 2) ITO/PVK:RE complex/ BCP/AlQ/LiF/Al. The turn on voltage of device 1 is 13 V and the device has the highest brightness of 18.2 cd/m2 at 21 V. Compared with the other kind of terbium complex Tb(o-MOBA)3 phen·H2O, photoluminescence (PL) and electroluminescence (EL) mechanisms of this material were discussed. Bright green emission was obtained from the optimized multi-layer device 2, and the highest EL brightness reached 124.5 cd/m2 at the voltage of 23 V.

Original languageEnglish (US)
Pages (from-to)20-23
Number of pages4
JournalGuangdianzi Jiguang/Journal of Optoelectronics Laser
Volume18
Issue number1
StatePublished - Jan 1 2007

Keywords

  • Electroluminescence (EL)
  • Exciton
  • Terbium complex

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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