Improvement of viewing angle and pixel contrast ratio in green top-emitting organic light-emitting devices

被引：6

作者：

Chen, Shufen ^{[1
]}

Xie, Wenfa ^{[2
]}

Huang, Wei ^{[1
]}

Liu, Shiyong ^{[2
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Inst Adv Mat, Jiangsu Key Lab Organ Elect & Informat Displays, Nanjing 210003, Peoples R China

[2] Jilin Univ, Natl Lab Integrated Optoelect, Changchun 130023, Peoples R China

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 12期

关键词：

D O I：

10.1364/OE.16.008868

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Green top-emitting organic light-emitting devices based on tris( 8-hydroxyl-quinoline) aluminum are fabricated with a low reflective Sm/Ag cathode and a comparative Al/Ag cathode. An additional 2,9dimethyl-4,7- diphenyl-1, 10-phenanthroline (BCP) layer, used as a light outcoupling layer, is deposited onto the SmAg cathode to improve device performances. The influence of different cathodes and the BCP layer on electrical and optical characteristics are investigated and discussed. It is worth mentioning that the introduction of the BCP layer not only enhances the brightness and the luminous efficiency but also improves the viewing angle and the pixel contrast ratio. (c) 2008 Optical Society of America.

引用

页码：8868 / 8875

页数：8

共 12 条

[1]

CHEN S, 2006, APPL PHYS LETT, V88

[2] Effect of 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline outcoupling layer on electroluminescent performances in top-emitting organic light-emitting devices [J].