Bright red electroluminescent devices using novel second-ligand-contained europium complexes as emitting layers

被引：112

作者：

Huang, L

Wang, KZ

Huang, CH ^{[1
]}

Li, FY

Huang, YY

机构：

[1] Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China

[2] Peking Univ, Univ Hong Kong, Joint Lab Rare Earth Mat & Bioinorgan Chem, Beijing 100871, Peoples R China

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

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2001年 / 11卷 / 03期

关键词：

D O I：

10.1039/b006919l

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：

With two novel second ligands, 2-(2-pyridyl)benzimidazole (HPBM) and 1-ethyl-2-(2-pyridyl)benzimidazole (EPBM), two europium complexes, Eu(DBM)(3)HPBM and Eu(DBM)(3)EPBM (DBM = dibenzoylmethanato), were prepared and used as emitting materials in organic electroluminescent (EL) devices. The devices with the structures ITO/TPD/Eu(DBM)(3)HPBM (or Eu(DBM)(3)EPBM)/Al and ITO/TPD/Eu(DBM)(3)EPBM/AlQ/Al emit red light originating from the europium complexes. The EL luminance of Eu(DBM)(3)EPBM is much higher than that of Eu(DBM)(3)HPBM. A maximum luminance of 180 cd m(-2) in the triple layered device of Eu(DBM)(3)EPBM was achieved at 18 V.

引用

页码：790 / 793

页数：4

共 11 条

[1] Electroluminescence mechanisms in organic light emitting devices employing a europium chelate doped in a wide energy gap bipolar conducting host [J].