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
- Yuchen Wu
2025-08-16
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.