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

Authors
Huang, L Wang, KZ Huang, CH Li, FY Huang, YY
Citation
L. Huang et al., Bright red electroluminescent devices using novel second-ligand-contained europium complexes as emitting layers, J MAT CHEM, 11(3), 2001, pp. 790-793
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS CHEMISTRY
ISSN journal
09599428 → ACNP
Volume
11
Issue
3
Year of publication
2001
Pages
790 - 793
Database
ISI
SICI code
0959-9428(2001)11:3<790:BREDUN>2.0.ZU;2-4
Abstract
With two novel second ligands, 2-(2-pyridyl)benzimidazole (HPBM) and 1-ethy l-2-(2-pyridyl)benzimidazole (EPBM), two europium complexes, Eu(DBM)(3)HPBM and Eu(DBM)(3)EPBM (DBM = dibenzoylmethanato), were prepared and used as e mitting materials in organic electroluminescent (EL) devices. The devices w ith the structures ITO/TPD/Eu(DBM)(3)HPBM (or Eu(DBM)(3)EPBM)/Al and ITO/TP D/Eu(DBM)(3)EPBM/AlQ/Al emit red light originating from the europium comple xes. 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 o f Eu(DBM)(3)EPBM was achieved at 18 V.