Vapor-deposited poly(N-vinylcarbazole) films for hole transport layer in organic electroluminescent devices

被引：9
作者：
Hanai, N [1 ]
Sumitomo, M [1 ]
Yanagi, H [1 ]
机构：
[1] Kobe Univ, Fac Engn, Nada Ku, Kobe, Hyogo 657, Japan
来源：
THIN SOLID FILMS | 1998年 / 331卷 / 1-2期
关键词：
organic electroluminescence device; polyvinylcarbazole; vapor deposition;
D O I：
10.1016/S0040-6090(98)00906-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Vapor-deposited films of poly(N-vinylcarbazole) (PVCz) were used as hole transport layers in organic electroluminescent devices. Hole transporting ability of the vapor-deposited PVCz films in the double-layered cell remarkably depended on their film morphology. Light emission was obtained only when a thin, homogeneous PVCz film(10-15 nm in thickness) was deposited on an anode substrate which was kept st 100 degrees C during deposition. When the PVCz film was overcoated on a low molecular hole transporting layer, the EL performance of the mutilayered device was retained for a longer time as compared with that without the PVCz deposition. This improved durability was ascribed to the PVCz layer which prevents the low molecular layer from being degraded by aggregation. (C) 1998 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：106 / 112
页数：7
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