Deep blue light-emitting diode based on high molecular weight poly(9,9-dioctylfluorene) with high efficiency and color stability

被引：22

作者：

Tseng, Shin-Rong ^{[1
]}

Li, Shiuan-Yi ^{[1
]}

Meng, Hsin-Fei ^{[1
]}

Yu, Yi-Hsiang ^{[2
]}

Yang, Chia-Ming ^{[2
]}

Liao, Hua-Hsien ^{[2
]}

Horng, Sheng-Fu ^{[2
]}

Hsu, Chian-Shu ^{[3
]}

机构：

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

[2] Natl Tsing Hua Univ, Dept Elect Engn, Hsinchu 300, Taiwan

[3] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 300, Taiwan

来源：

ORGANIC ELECTRONICS | 2008年 / 9卷 / 03期

关键词：

polymer light-emitting diodes; blocking layer; molecular weight; deep blue; stability;

D O I：

10.1016/j.orgel.2007.11.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A highly efficient deep blue polymer light-emitting diode based on poly(9,9-dioctylfluorene) is demonstrated. The performance is found to increase significantly with the molecular weight. Two different molecular weights are compared, one is 71,000 and the other is 365,000. The electroluminescent efficiency and color stability are improved by slightly doping hole traps into the emission layer and bilayer structure. The maximum efficiency is 3.8 cd/A with the corresponding external quantum efficiency of 3.7% at deep blue with Commission Internationale de L'Eclairage (CIE) coordinate at (0.15, 0.09). Stable blue emission is maintained up to 6600 cd/m(2) without growth of green shoulder in emission spectrum. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：279 / 284

页数：6

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