Realization of efficient light out-coupling in organic light-emitting diodes with surface carbon-coated magnetic alloy nanoparticles

被引：33
作者：
Dong, Qingchen [1 ,2 ]
Tai, Feifei [1 ,2 ]
Lian, Hong [1 ,2 ]
Zhao, Bo [1 ,2 ]
Zhong, Zheng [1 ,2 ]
Chen, Zheng [1 ,2 ]
Tang, Jianxin [3 ]
Zhu, Furong [1 ,2 ,4 ,5 ]
机构：
[1] Taiyuan Univ Technol, MOE Key Lab Interface Sci & Engn Adv Mat, 79 Yingze West St, Taiyuan 030024, Peoples R China
[2] Taiyuan Univ Technol, Res Ctr Adv Mat Sci & Technol, 79 Yingze West St, Taiyuan 030024, Peoples R China
[3] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China
[4] Hong Kong Baptist Univ, Dept Phys, 224 Waterloo Rd, Kowloon Tong, Hong Kong, Peoples R China
[5] Hong Kong Baptist Univ, Inst Adv Mat, 224 Waterloo Rd, Kowloon Tong, Hong Kong, Peoples R China
来源：
NANOSCALE | 2017年 / 9卷 / 08期
基金：
中国国家自然科学基金;
关键词：
EXTERNAL-QUANTUM-EFFICIENCY; IRIDIUM COMPLEXES; DEVICES; FUNCTIONALIZATION; FABRICATION; PLASMON;
D O I：
10.1039/c6nr09769c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A significant enhancement in light extraction in organic light-emitting diodes (OLEDs) is realized by using composite hole transport layers (HTLs) with surface carbon-coated magnetic alloy nanoparticles (NPs). Compared to the control device with a standard architecture, the current efficiencies of fluorescent green OLEDs can be enhanced by 47.1% and 48.5% by mixing the surface carbon-coated magnetic FePt (0.5 wt%) and CoPt (0.5 wt%) alloy NPs into poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS), yielding the maximum values of 5.40 cd A(-1) and 5.45 cd A(-1), respectively. The presence of an alloy NP-incorporated PEDOT:PSS HTL also acts as an optical out-coupling layer contributing to the efficiency enhancement, accomplished through the collective effects of light-scattering, localized surface plasmon resonance and increased electron trap density induced by magnetic alloy NPs.
引用
收藏
页码：2875 / 2882
页数：8
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