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).
引用
收藏
页码：37 / 42
页数：6
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