Lattice-matched molecular-anchor design for high-performance perovskite quantum dot light-emitting diodes

Jiawei Chen, Xiangyu Liu, Bo Cai, Yuanzhuang Cheng, Hao Wen, Danlei Zhu, Yaonan Xiong, Linjie Dai, Xinghua Yan, Baixu Xiang, Xiyu Luo, Wenjing Feng, Jiuyao Du, Shuyue Dong, Qingsong Shan, Shulin Chen, Haibo Zeng, Qihua Xiong, Lian Duan () and Dongxin Ma ()
Additional contact information
Jiawei Chen: Tsinghua University
Xiangyu Liu: Tsinghua University
Bo Cai: Nanjing University of Posts & Telecommunications
Yuanzhuang Cheng: Tsinghua University
Hao Wen: Tsinghua University
Danlei Zhu: Tsinghua University
Yaonan Xiong: Hunan University
Linjie Dai: University of Cambridge
Xinghua Yan: Tsinghua University
Baixu Xiang: Tsinghua University
Xiyu Luo: Tsinghua University
Wenjing Feng: Tsinghua University
Jiuyao Du: Tsinghua University
Shuyue Dong: Tsinghua University
Qingsong Shan: Nanjing University of Science and Technology
Shulin Chen: Hunan University
Haibo Zeng: Nanjing University of Science and Technology
Qihua Xiong: Tsinghua University
Lian Duan: Tsinghua University
Dongxin Ma: Tsinghua University

Nature Communications, 2025, vol. 16, issue 1, 1-10

Abstract: Abstract Perovskite quantum dot light-emitting diodes have rapidly achieved high external quantum efficiencies of over 25%; however, hindered by limited operating stability originating from surface defects or ion migration in quantum dots. Here, we design a lattice-matched anchoring molecule, tris(4-methoxyphenyl)phosphine oxide (TMeOPPO-p), to anchor the multi-site defects and stabilise the lattice. The target quantum dots exhibit high exciton recombination features with near-unity photoluminescence quantum yields (97%), and the as-fabricated quantum dot light-emitting diodes present a maximum external quantum efficiency of up to 27% at 693 nm, a low efficiency roll-off (over 20% at a current density of 100 mA cm−2 for the typical device) and an operating half-life of over 23,000 h. Besides, the air-processed devices maintain a maximum external quantum efficiency of over 26% with good storage stability. We expect this work to exert a profound influence on rational and on-demand molecule design for perovskite QDs, indicating great promise in optoelectronic applications.

Date: 2025
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DOI: 10.1038/s41467-025-63684-9

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