Red-emitting electroluminescent devices based on osmium-complexes-doped blend of poly(vinylnaphthalene) and 1,3,4-oxadiazole derivative

被引：61

作者：

Jiang, XZ

Jen, AKY

Carlson, B

Dalton, LR

机构：

[1] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

[2] Univ Washington, Dept Chem, Seattle, WA 98195 USA

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 17期

关键词：

D O I：

10.1063/1.1514401

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Efficient red electrophosphorescence was achieved from double-layer light-emitting devices using osmium (Os)-complexes-doped blend of poly(vinylnaphthalene) (PVN) and 2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (PVN:PBD) as the emitting layer. Blending PVN with PBD greatly suppresses the electromer emission of PVN. The PVN:PBD blend emanates a short-wavelength electroluminescence emission peaking at around 375 nm, which overlaps well with the absorption spectra of the Os complexes and ensures very efficient energy transfer to the Os-complex dopants. The best external quantum efficiency of the double-layer devices was 2.2%, with a photometric efficiency of 1.9 cd/A. (C) 2002 American Institute of Physics.

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页码：3125 / 3127

页数：3

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