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

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.

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Publication Details

Journal
Angewandte Chemie International Edition
Published
2025-04-26
DOI
https://doi.org/10.1002/anie.202500131
Citations
6
Primary Topic
Perovskite Materials and Applications
Type
article
Field-Weighted Citation Impact
4.38
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article

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

Guoting Li, Lili Ke, Qing-Qing Zou, Nanliu Liu et al.
6 citations
Angewandte Chemie International Edition
Perovskite Materials and Applications
4.38
article

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

Guoting Li, Lili Ke, Qing-Qing Zou, Nanliu Liu, Sijin Liu, Biao Liu, Guozheng Nie, Yongjun Li, Yuanyuan Guo, Bing Ji, Hongpeng Zhou, Yaxin Zhai, Weike Wang, Shiwei Lu, Jifei Wang, Rongzhou Liang, Yan Chen
article en
6 citations

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.

Angewandte Chemie International EditionVol. 64(27)
Hunan University of Science and Technology (CN), Central South University (CN), Xinjiang Medical University (CN), Northwestern Polytechnical University (CN), Hunan Normal University (CN), Changsha Normal University (CN), Ministry of Education (IR), Qiannan Normal College For Nationalities (CN), Xiangtan University (CN)
Affordable and clean energy
Openalex Percentile: Top 6%
Perovskite Materials and Applications
4.38
DOISourceOpenAlex
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