A green emitting, alkoxy disubstituted poly(p-phenylene vinylene) for electroluminescent devices

被引：22

作者：

Cacialli, F

Chuah, BS

Kim, JS

dos Santos, DA

Friend, RH

Moratti, SC

Holmes, AB

Brédas, JL

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Univ Cambridge, Melville Lab Polymer Synth, Cambridge CB2 3RA, England

[3] Univ Mons, Serv Chim Mat Nouveaux, B-7000 Mons, Belgium

来源：

SYNTHETIC METALS | 1999年 / 102卷 / 1-3期

基金：

英国工程与自然科学研究理事会;

关键词：

PPV; LEDs; alkoxy; electronic structure;

D O I：

10.1016/S0379-6779(98)00960-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the effects of the substitution of butoxy chains on the phenyl 2,3 positions of poly(p-phenylene vinylene) (PPV). We find that this substitution has a remarkable influence on the optical and electroluminescent properties of the resulting semiconductor (DB-PPV) which does not show the red-shift of the emission, typical of alkoxy substituted PPVs, such as poly(2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene), MEH-PPV, dominated by the influence of the pi-electron rich oxygen atom. We report photoluminescence (PL), quantum efficiencies of similar to 40%, electroluminescence (EL) efficiencies of similar to 0.6 cd/A in 2-layer ITO/PPV/DB-PPV/Ca diodes, and luminances up to 4500 cd/m(2).

引用

页码：924 / 925

页数：2

共 10 条

[1] CONJUGATED POLYMERS AND OLIGOMERS - DESIGNING NOVEL MATERIALS USING A QUANTUM-CHEMICAL APPROACH [J].