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
收藏
页码：111 / 112
页数：2
相关论文
共 50 条
  • [1] Enhanced thermal stability of green-emission quantum-dot light-emitting diodes via composition-gradient thick-shell quantum dots
    Hoang-Tuan Vu
    Chiang, Ray-Kuang
    Huang, Chun-Yuan
    Chen, Chih-Jung
    Yu, Hsin-Chieh
    Lien, Jiun-Yi
    Su, Yan-Kuin
    APPLIED PHYSICS EXPRESS, 2016, 9 (08)
  • [2] Improvement of thermal stability of type-II composition-gradient thick-shell quantum dots green light-emitting diodes
    Yu, Hsin-Chieh
    Vu, Hoang-Tuan
    LIGHT-EMITTING DIODES: MATERIALS, DEVICES, AND APPLICATIONS FOR SOLID STATE LIGHTING XXI, 2017, 10124
  • [3] Origin of Efficiency Roll-Off in Colloidal Quantum-Dot Light-Emitting Diodes
    Shirasaki, Yasuhiro
    Supran, Geoffrey J.
    Tisdale, William A.
    Bulovic, Vladimir
    PHYSICAL REVIEW LETTERS, 2013, 110 (21)
  • [4] Quantifying Efficiency Roll-Off Factors in Quantum-Dot Light-Emitting Diodes
    Yan, Xianchang
    Zhu, Xitong
    Wu, Boning
    Jin, Yizheng
    Tian, Wenming
    Jin, Shengye
    ADVANCED SCIENCE, 2024, 11 (46)
  • [5] Investigation on Thermally Induced Efficiency Roll-Off: Toward Efficient and Ultrabright Quantum-Dot Light-Emitting Diodes
    Sun, Yizhe
    Su, Qiang
    Zhang, Heng
    Wang, Fei
    Zhang, Shengdong
    Chen, Shuming
    ACS NANO, 2019, 13 (10) : 11433 - 11442
  • [6] Thick-shell CdZnSe/ZnSe/ZnS quantum dots for bright white light-emitting diodes
    Jin, Xiao
    Chen, Wenyong
    Li, Xiaoying
    Guo, Haichao
    Li, Qinghua
    Zhang, Zhenghe
    Zhang, Tingting
    Xu, Bing
    Li, Dongyu
    Song, Yinglin
    JOURNAL OF LUMINESCENCE, 2021, 229
  • [7] Efficient and Bright Colloidal Quantum Dot Light-Emitting Diodes via Controlling the Shell Thickness of Quantum Dots
    Shen, Huaibin
    Lin, Qinli
    Wang, Hongzhe
    Qian, Lei
    Yang, Yixing
    Titov, Alexandre
    Hyvonen, Jake
    Zheng, Ying
    Li, Lin Song
    ACS APPLIED MATERIALS & INTERFACES, 2013, 5 (22) : 12011 - 12016
  • [8] Effect of Postannealing on Quantum-Dot Light-Emitting Diodes
    Hou, Wenjun
    Wang, Tianfeng
    Guo, Yulin
    Liang, Wenlin
    Wu, Longjia
    Cao, Weiran
    Lin, Xiongfeng
    ACS APPLIED OPTICAL MATERIALS, 2024, 2 (03): : 368 - 372
  • [9] Tunneling effect in quantum-dot light-emitting diodes
    Yu, Rongmei
    Cheng, Jinbing
    Lu, Yingying
    Pu, Chunying
    Wang, Ting
    Ji, Wenyu
    APPLIED PHYSICS LETTERS, 2025, 126 (01)
  • [10] Ultralow Roll-Off Quantum Dot Light-Emitting Diodes Using Engineered Carrier Injection Layer
    Liao, Zebing
    Mallem, Kumar
    Prodanov, Maksym F.
    Kang, Chengbin
    Gao, Yiyang
    Song, Jianxin
    Vashchenko, Valerii V.
    Srivastava, Abhishek K.
    ADVANCED MATERIALS, 2023, 35 (47)
12345