Effect of hole-blocking layer doped with electron-transport molecules on the performance of blue organic light-emitting device

被引：29

作者：

Kim, Y ^{[1
]}

Im, WB

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Dept Phys, London SW7 2BW, England

[2] Inst Adv Engn, Kyonggi Do 449860, South Korea

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2004年 / 201卷 / 09期

关键词：

D O I：

10.1002/pssa.200406830

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A hole-blocking layer, bathocuproine (BCP), doped with an electron-tran sport material, tris(8-hydroxy-quinolinato) aluminum (Alq3), was applied to blue organic light-emitting devices (OLEDs) in order to investigate its effect on the color purity and device stability. The color coordinate of a blue OLED with the BCP layer doped with 10% Alq3 molecules was not much degraded as x = 0.157 and y = 0.127, while the maximum efficiency and luminance reached similar to1.7 cd/A and similar to10 000 cd/m(2), respectively. In particular, an approximately 18-fold-higher device lifetime has been achieved with the present Alq3-doped BCP layer compared to the undoped BCP layer. (C) 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：2148 / 2153

页数：6

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