Abnormal Chiral Coupling for Efficient and Stable Reduced-Dimensional Perovskite Emitters

Highly efficient and stable reduced-dimensional halide perovskite (RDP) emitters are of vital importance for perovskite optoexcitonic devices. However, simultaneous improvement of their luminescence efficiency, stability, and phase purity based on principles without using external passivators has been a tremendous challenge. Here, an abnormal chiral coupling effect is introduced in the chiral benzene halide RDPs. Our strategy facilitates the construction of the network of both short-range nanoscale lattices and long-range superstructures, which leads to improved phase purity, reduced defects, weakened exciton-phonon scattering, and efficient excited-state transfer pathways. Consequently, an increment of photoluminescence quantum yield by over 35% compared to that of achiral counterpart was realized. This strong chiral coupling effect also enables the realization of stable and low threshold continuous wave lasing over 0.5 h at room temperature. Our study introduces an improved design principle for RDPs to control the defects, phase purity, crystal nano/microstructure, molecular interaction, and excited-state process for highly efficient and stable perovskite optoexcitonic devices.

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Publication Details

Journal
ACS Nano
Published
2026-03-13
DOI
https://doi.org/10.1021/acsnano.5c18306
Primary Topic
Perovskite Materials and Applications
Type
article
Field-Weighted Citation Impact
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article

Abnormal Chiral Coupling for Efficient and Stable Reduced-Dimensional Perovskite Emitters

Yuanhui Sun, YuHuang Wang, Hao Meng, Nan Gong et al.
ACS Nano
Perovskite Materials and Applications
article

Abnormal Chiral Coupling for Efficient and Stable Reduced-Dimensional Perovskite Emitters

Yuanhui Sun, YuHuang Wang, Hao Meng, Nan Gong, Peng Gao, Pingheng Tan, Tao Man, Linhan Li, C. H. Wang, Zehui Zhou, Beibei Xu, Hailong Chen, Zicheng Li, Zhi Chen, Gongxun Bai, Xingyu Gao, Xinyu Duan, Wei Qin, Zhenhuang Su, Xiaofeng Liu, Weidong Shen, Lijun Zhang, Jianrong Qiu
article en

Abstract

Highly efficient and stable reduced-dimensional halide perovskite (RDP) emitters are of vital importance for perovskite optoexcitonic devices. However, simultaneous improvement of their luminescence efficiency, stability, and phase purity based on principles without using external passivators has been a tremendous challenge. Here, an abnormal chiral coupling effect is introduced in the chiral benzene halide RDPs. Our strategy facilitates the construction of the network of both short-range nanoscale lattices and long-range superstructures, which leads to improved phase purity, reduced defects, weakened exciton-phonon scattering, and efficient excited-state transfer pathways. Consequently, an increment of photoluminescence quantum yield by over 35% compared to that of achiral counterpart was realized. This strong chiral coupling effect also enables the realization of stable and low threshold continuous wave lasing over 0.5 h at room temperature. Our study introduces an improved design principle for RDPs to control the defects, phase purity, crystal nano/microstructure, molecular interaction, and excited-state process for highly efficient and stable perovskite optoexcitonic devices.

ACS NanoVol. 20(11)
Kunming University of Science and Technology (CN), Shandong University (CN), Jilin University (CN), Chinese Academy of Sciences (CN), Crystal Research (United States) (US), State Key Laboratory on Integrated Optoelectronics (CN), Integrated Optoelectronics (Norway) (NO), Shanghai Advanced Research Institute (CN), Fujian Institute of Research on the Structure of Matter (CN), FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ), Suzhou Research Institute (CN), Division of Materials Science and Engineering (AU), Jilin Medical University (CN), Advanced Materials and Devices (United States) (US), Institute of Semiconductors (CN), University of Chinese Academy of Sciences (CN), State Key Laboratory of Crystal Materials, China Jiliang University (CN), University of Maryland, College Park (US), Zhejiang University (CN)
Openalex Percentile: Top 24%
Perovskite Materials and Applications
DOISourceOpenAlex
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