Long-range order enhance performance of patterned blue quantum dot light-emitting diodes

Yuyu Jia, Hui Li (), Ning Guo, Fengmian Li, Tianchen Li, Haoran Ma, Yuyan Zhao, Hanfei Gao, Dan Wang, Jiangang Feng, Zhiyuan He (), Lei Jiang and Yuchen Wu ()
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Yuyu Jia: Beijing Institute of Technology
Hui Li: University of Science and Technology of China
Ning Guo: Chinese Academy of Sciences
Fengmian Li: Chinese Academy of Sciences
Tianchen Li: Chinese Academy of Sciences
Haoran Ma: Beijing Institute of Technology
Yuyan Zhao: University of Science and Technology of China
Hanfei Gao: University of Science and Technology of China
Dan Wang: Beijing Institute of Technology
Jiangang Feng: University of Science and Technology of China
Zhiyuan He: Beijing Institute of Technology
Lei Jiang: Chinese Academy of Sciences
Yuchen Wu: Chinese Academy of Sciences

Nature Communications, 2025, vol. 16, issue 1, 1-9

Abstract: Abstract Quantum dot light-emitting diodes show great potential for next-generation displays. Although film quantum dot light-emitting diodes have achieved or approached efficiency and stability standards for commercial applications, patterned quantum dot light-emitting diodes, particularly blue quantum dot light-emitting diodes, still face challenges in both efficiency and stability. Traditional patterning methods often lead to defects and disorder, causing non-radiative recombination and reduced performance. Here, we develop an aromatic-enhanced capillary bridge confinement strategy to achieve long-range ordered blue quantum dot microstructure arrays. These quantum dot arrays integrate into quantum dot light-emitting diodes achieve a peak external quantum efficiency of 24.1% and a peak luminance of 101,519 cd m−2. Additionally, the minimum pixel size is reduced to 3 μm, enabling a maximum resolution exceeding 5000 pixels per inch, and static electroluminescence display modes. This study provides a strategy to advance the commercialization of quantum dot light-emitting diodes.

Date: 2025
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DOI: 10.1038/s41467-025-62345-1

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