White Electroluminescence from Star-like Single Polymer Systems: 2,1,3-Benzothiadiazole Derivatives Dopant as Orange Cores and Polyfluorene Host as Six Blue Arms

被引：61

作者：

Chen, Lei ^{[1
,2
]}

Li, Pengcheng ^{[1
,2
]}

Cheng, Yanxiang ^{[1
]}

Xie, Zhiyuan ^{[1
]}

Wang, Lixiang ^{[1
]}

Jing, Xiabin ^{[1
]}

Wang, Fosong ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

ADVANCED MATERIALS | 2011年 / 23卷 / 26期

基金：

中国国家自然科学基金;

关键词：

LIGHT-EMITTING-DIODES; EFFICIENT; EMISSION; LUMINESCENCE; PERFORMANCE; MOLECULES;

D O I：

10.1002/adma.201100297

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By incorporating six blue emissive polyfluorene arms into star-shaped orange emissive cores, two kinds of star-like white electroluminescent single-polymer systems are designed and synthesized. Energy transfer from the polyfluorene arms to the orange emissive cores is observed and a concentration quenching effect is effectively suppressed. Through thermal annealing, a highly efficient white emissive single-layer device is achieved with CIE coordinates of (0.33, 0.35) and a current efficiency of 18.01 cd A(-1).

引用

页码：2986 / +

页数：6

共 25 条

[1] White polymeric light-emitting diode based on a fluorene polymer/Ir complex blend system [J].