Spatial extent of the recombination zone in a PPV/polymer blend light-emitting diode

被引：35

作者：

Vestweber, H

Bassler, H

Gruner, J

Friend, RH

机构：

[1] UNIV MARBURG,ZENTRUM MAT WISSENSCH,D-35032 MARBURG,GERMANY

[2] CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND

来源：

CHEMICAL PHYSICS LETTERS | 1996年 / 256卷 / 1-2期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/0009-2614(96)00368-5

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：

Double-layer LEDs containing poly(phenylenevinylene) (PPV) and a tris(stilbene)amine (TSA)/polysulfone (PSu) blend as active components were prepared in order to determine the spatial extent of the recombination zone. By monitoring the electroluminescence spectra as a function of the thickness of the TSA layer the fraction of the electrons that reach the PPV layer can be estimated. The electron range s decreases with increasing cell current, For E = 2 x 10(6) V/cm, s = 55 +/- 10 nm is found. Arguments are presented in favor of the notion that s is limited by recombination with majority carriers (holes).

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页码：37 / 42

页数：6

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