Reducing roll-off effect of efficient green quantum-dot light-emitting diodes via composition-gradient thick-shell quantum dots

被引：0

作者：

Vu, Hoang-Tuan ^{[1
]}

Su, Yan-Kuin ^{[1
]}

Huang, Chun-Yuan ^{[2
]}

Yu, Hsin-Chieh ^{[1
]}

Chiang, Ray-Kuang ^{[3
]}

Chen, Chih-Jung ^{[3
]}

机构：

[1] Natl Cheng Kung Univ, Adv Optoelectron Technol Ctr, Inst Microelect, Tainan 701, Taiwan

[2] Natl Taitung Univ, Dept Appl Sci, Taitung 950, Taiwan

[3] Far East Univ, Nanomat Lab, Tainan 74448, Taiwan

来源：

2016 23RD INTERNATIONAL WORKSHOP ON ACTIVE-MATRIX FLATPANEL DISPLAYS AND DEVICES (AM-FPD) | 2016年

关键词：

BRIGHT;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this study, we investigated the stable and efficient quantum-dot light emitting diodes (QLEDs) under high driving current by using composition-gradient thick-shell CdSe@ZnS/ZnS QDs. Thick-shell QDs with low defective structure can effectively avoid the electron-hole pairs from nonradiative Auger recombination and prevent thermal-stress-induced expansion at high driving current. Consequently, roll-off effect in electroluminescent feature can be reduced almost two times. Moreover, the maximum current efficiency of thick-shell-device is 10.3 cd/A, which much higher than 1.57 cd/A in thin-shell-device.

引用

页码：111 / 112

页数：2

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