Ultra-High-Resolution Full-Color Quantum Dot Light-Emitting Diodes through Cross-Linking-Assisted Hierarchical Confined Assembly

被引:0
|
作者
Fang, Ke [1 ,3 ]
Yang, Baoxiang [2 ]
Li, Hui [2 ]
Jia, Yuyu [1 ]
Guo, Ning [1 ,3 ]
Li, Tianchen [1 ,3 ]
He, Ke [1 ,3 ]
Gao, Hanfei [2 ]
Jiang, Lei [1 ,2 ]
Wu, Yuchen [1 ,2 ,3 ]
机构
[1] Chinese Acad Sci, Key Lab Bioinspired Mat & Interfacial Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
[2] Univ Sci & Technol China, Suzhou Inst Adv Res, State Key Lab Bioinspired Interfacial Mat Sci, Suzhou 215123, Peoples R China
[3] Univ Chinese Acad Sci UCAS, Sch Future Technol, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
capillary bridge; cross-linking; high-resolution; full-color;
D O I
10.1021/acs.nanolett.5c01069
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Quantum dots (QDs) are vital for virtual reality and augmented reality displays due to their tunable optical properties. Although QD color converters enable blue light-emitting diode down-conversion to green/red, efficiency and stability issues hinder their high-end display applications. Here, we employ a cross-linking-assisted hierarchical confined assembly method to fabricate red, green, and blue QD arrays. Specifically, micropillar templates with asymmetric wettability are used to sequentially deposit green and red QD microwire arrays in mutually orthogonal directions on a blue QD film, forming RGB QD arrays. 4,4 '-Bis(3-vinyl-9H-carbazol-9-yl)1,1 '-biphenyl (CBP-V) is introduced into QDs to solve the problem of color crosstalk. Full-color QD pixel arrays with resolutions of 1814-2117 pixels per inch (PPI) are successfully fabricated. Upon integration into devices, adjustable emission from cool white light to warm white light is observed, with a peak external quantum efficiency (EQE) of 16.14% and a peak luminance of 226 054 cd m-2.
引用
收藏
页码:5052 / 5059
页数:8
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