Soluble europium complexes for light-emitting diodes

被引：77

作者：

Yu, G ^{[1
]}

Liu, YQ

Wu, X

Zhu, DB

Li, HY

Jin, LP

Wang, MZ

机构：

[1] Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China

[2] Beijing Normal Univ, Dept Chem, Beijing 100875, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2000年 / 12卷 / 09期

关键词：

D O I：

10.1021/cm9904537

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Soluble rare-earth complexes LiEu(TTA)(4), NaEu(TTA)(4), and KEu(TTA)(4) [TTA = 2-thenoyltrifluoroacetonato] were synthesized, and their luminescence properties doped in poly(N-vinylcarbazole) (PVK) thin films and in different solvents were observed. The results indicate that the emission comes from the Eu3+ ion. The photoluminescence spectra of NaEu(TTA)(4) are independent of the solvent, with the exception of the luminescence intensity. When NaEu(TTA)(4) is doped into PVK films, the luminescence intensity of the Eu3+ ion is enhanced with increasing NaEu(TTA)(4) concentration in the PVK film. The nature of the cations in the Eu3+ complexes does not affect the luminescence performance and processability of the complexes. Single-, double-, and three-layer light-emitting diodes based on PVK doped with LiEu(TTA)(4), NaEu(TTA)(4), and KEu(TTA)(4) as an active layer were fabricated and investigated.

引用

页码：2537 / 2541

页数：5

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