Multilayer polymer light-emitting diodes by blade coating method

被引：104

作者：

Tseng, Shin-Rong ^{[1
]}

Meng, Hsin-Fei ^{[1
]}

Lee, Kuan-Chen ^{[2
]}

Horng, Sheng-Fu ^{[3
]}

机构：

[1] Natl Chiao Tung Univ, Inst Phys, Hsinchu 300, Taiwan

[2] Natl Chiao Tung Univ, Inst Elect Engn, Hsinchu 300, Taiwan

[3] Natl Chiao Tung Univ, Dept Elect Engn, Hsinchu 300, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 15期

关键词：

D O I：

10.1063/1.2999541

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Multilayer polymer light-emitting diodes fabricated by blade coating are presented. Multilayer of polymers can be easily deposited by blade coating on a hot plate. The multilayer structure is confirmed by the total thickness and the cross section view in the scanning electron microscope. The film thickness variation is only 3.3% in 10 cm scale and the film roughness is about 0.3 nm in the micron scale. The efficiency of single layer poly(para-phenylene vinylene) copolymer Super Yellow and poly(9,9-dioctylfluorene) (PFO, deep blue) devices are 9 and 1.7 cd/A, respectively, by blade coating. The efficiency of the PFO device is raised to 2.9 cd/A with a 2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (PBD) hole-blocking layer and to 2.3 cd/A with a poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4(')-(N-(4-sec-butylphenyl))diphenylamine)] elec-tron-blocking layer added by blade coating. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2999541]

引用

页数：3

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