Solution-Process-Feasible Deep-Red Phosphorescent Emitter

被引：30

作者：

Jou, Jwo-Huei ^{[1
]}

Su, Yu-Ting ^{[1
]}

Hsiao, Ming-Ting ^{[1
]}

Yu, Hui-Huan ^{[1
]}

He, Zhe-Kai ^{[1
]}

Fu, Shen-Chin ^{[1
]}

Chiang, Chi-Heng ^{[1
]}

Chen, Chien-Tien ^{[2
]}

Chou, Chia-hung ^{[2
]}

Shyue, Jing-Jong ^{[2
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

[2] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2016年 / 120卷 / 33期

关键词：

P-I-N; ELECTRON-TRANSPORT MATERIALS; EFFICIENCY ROLL-OFF; HIGHLY EFFICIENT; DEVICE APPLICATIONS; LIGHT; DIODES; HOST; INJECTION; CARRIER;

D O I：

10.1021/acs.jpcc.6b07740

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Solution processing enables organic devices to be fabricated cost-effectively, while deep-red emitters enable displays with high color saturation and lighting with high light quality. However, limited deep-red emitters were reported with solution process feasibility and high efficiency. We demonstrate here a high-efficiency, solution-process-feasible deep-red emitter by coupling the highly efficient phosphorescent complex with a highly thermally stable fluorescent compound. The device exhibits a maximum external quantum efficiency of 11.2% at 10 cd m(-2) and 8.4% at 100 cd m(-2). The latter is coupled with an ultradeep red emission (0.70, 0.27) and a potential color saturation of 108%. Besides the intrinsically high-efficiency nature of the phosphorescent complex, the record high efficiency may be attributable to the spirally configured fluorene moiety in the fluorescent compound to prevent concentration-quenching effect, a proper host to enable an effective host-to-guest energy transfer, and the employed cohost with electron-trapping character to enable a balanced carrier injection.

引用

页码：18794 / 18802

页数：9

共 61 条

[11] Host and Dopant Materials for Idealized Deep-Red Organic Electrophosphorescence Devices [J].