POLY(P-PHENYLENEVINYLENE) LIGHT-EMITTING-DIODES - ENHANCED ELECTROLUMINESCENT EFFICIENCY THROUGH CHARGE CARRIER CONFINEMENT

被引：626

作者：

BROWN, AR ^{[1
]}

BRADLEY, DDC ^{[1
]}

BURROUGHES, JH ^{[1
]}

FRIEND, RH ^{[1
]}

GREENHAM, NC ^{[1
]}

BURN, PL ^{[1
]}

HOLMES, AB ^{[1
]}

KRAFT, A ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,CHEM LAB,CAMBRIDGE CB2 1EW,ENGLAND

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 23期

关键词：

D O I：

10.1063/1.108094

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have fabricated light-emitting diodes with poly(p-phenylenevinylene) as the emissive layer, and with an electron-transporting layer formed from a solid state dispersion of 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole in poly(methyl methacrylate), placed between this and the negative electrode. These structures show typically a tenfold improvement in efficiency in the low-voltage regime and an eightfold improvement in the high-voltage regime over devices without the electron-transporting layer. Typical efficiencies are about 0.8% photons/electron. We consider that the role of the electron-transport layer is to confine holes to the emissive layer.

引用

页码：2793 / 2795

页数：3

共 22 条

[1] BLUE LIGHT-EMITTING ORGANIC ELECTROLUMINESCENT DEVICES [J].