Air-Stable Ultrabright Inverted Organic Light-Emitting Devices with Metal Ion-Chelated Polymer Injection Layer

Nano-Micro Letters

Chun-Sing Lee¹  Shuang Tian¹  Yan Wu¹  Dong Shen¹  Jiaming Zhang²  Wenfa Xie²  Letian Zhang²  Chunxiu Zang²  Shihao Liu³ 

[1] Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong, People’s Republic of China;State Key Laboratory of Integrated Optoelectronics, College of Electronics Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, People’s Republic of China;State Key Laboratory of Integrated Optoelectronics, College of Electronics Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, People’s Republic of China;Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong, People’s Republic of China;

关键词: Air stability;    Ultrabright;    Electron injection;    Metal ion chelation;    Inverted organic light-emitting device;   

DOI  :  10.1007/s40820-021-00745-w

来源: Springer

【 摘 要 】

tsBy using a zinc ion-chelated polyethylenimine as electron injection layer, an inverted organic light-emitting device (OLED) was successfully prepared with an external quantum efficiency over 10% at a brightness of 45,610 cd m−2.The chelation between zinc ion and amine groups not only passivates polar amine groups, but also fuses separated electronic orbitals.The inverted OLED show an excellent air stability with an operating time of 541 h @ 1,000 cd m−2 without any protection.

【 授权许可】

CC BY