Volume 137, Issue 27 e202500131
Forschungsartikel

Halogen Bonding Enable Improved Performance and Stability of Dion–Jacobson Perovskite Solar Cells

Nanliu Liu

Nanliu Liu

School of Physics and Electronics, Qiannan Normal University for Nationalities, Duyun, Guizhou, 558000 P.R. China

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

Both authors contributed equally to this work.

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Qingqing Zou

Qingqing Zou

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

Key Laboratory of Multifunctional Ionic Electronic Materials and Devices, School of Physics and Electronics, Hunan Normal University, Changsha, 410081 P.R. China

Both authors contributed equally to this work.

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Ying Li

Ying Li

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

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Guoting Li

Guoting Li

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

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Yan Chen

Yan Chen

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

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Rongzhou Liang

Rongzhou Liang

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

Key Laboratory of Multifunctional Ionic Electronic Materials and Devices, School of Physics and Electronics, Hunan Normal University, Changsha, 410081 P.R. China

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Sijin Liu

Sijin Liu

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

Key Laboratory of Multifunctional Ionic Electronic Materials and Devices, School of Physics and Electronics, Hunan Normal University, Changsha, 410081 P.R. China

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Shiwei Lu

Shiwei Lu

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

Key Laboratory of Multifunctional Ionic Electronic Materials and Devices, School of Physics and Electronics, Hunan Normal University, Changsha, 410081 P.R. China

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WeiKe Wang

WeiKe Wang

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

Key Laboratory of Multifunctional Ionic Electronic Materials and Devices, School of Physics and Electronics, Hunan Normal University, Changsha, 410081 P.R. China

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Bing Ji

Bing Ji

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

Key Laboratory of Multifunctional Ionic Electronic Materials and Devices, School of Physics and Electronics, Hunan Normal University, Changsha, 410081 P.R. China

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Lili Ke

Lili Ke

Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronics, Xiangtan University, Xiangtan, 411105 P.R. China

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Guozheng Nie

Guozheng Nie

Department of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan, 411201 P.R. China

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Hongpeng Zhou

Hongpeng Zhou

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

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Biao Liu

Biao Liu

Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan, 410083 P.R. China

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Yaxin Zhai

Yaxin Zhai

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

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Yuanyuan Guo

Corresponding Author

Yuanyuan Guo

School of Medical Engineering and Technology, Institute of Medical Engineering Interdisciplinary Research, Xinjiang Medical University, Urumqi, 830011 P.R. China

Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, Xi'an, Shanxi, 710072 P.R. China

E-mail: [email protected]; [email protected]

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Jifei Wang

Corresponding Author

Jifei Wang

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, 410081 P.R. China

Key Laboratory of Multifunctional Ionic Electronic Materials and Devices, School of Physics and Electronics, Hunan Normal University, Changsha, 410081 P.R. China

E-mail: [email protected]; [email protected]

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First published: 26 April 2025

Abstract

The undesired phase distribution and intrinsic residual lattice strain remain the bottleneck for high-performance and stable 2D or Q-2D perovskite solar cells (PSCs), especially for the Dion–Jacobson (DJ) type Q-2D PSCs. Here, we showcase employing halogen bonds to stabilize the halide anions and fine-tuning the residual lattice strain by introducing perfluorodecyl iodide (PFI). It reduces the density of iodide species defects and releases the residual tensile strain, leading to more homogenous phase distribution, suppressed carrier recombination, promoted charge transport, enhanced efficiency, and stability. Therefore, DJ PSCs maintain over 81% of initial efficiency after thermal-light aging (i.e., under 85 °C and 1 sun illumination) for 952 h, and remain over 91% of initial efficiency after under reverse bias (−2.5 V, under ISOS-V aging tests) for over 21 h, representing one of the most bias-stable Q-2D PSCs reported so far.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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