Mechanistic insights into defect-governed ion migration and phase instability in mixed-halide perovskites

We reveal defect-governed ion migration in FAPb(I 1− x Br x ) 3 cells: dark transport is dominated by halide interstitials, whereas illumination activates FA-cation migration correlated with deep-level defect density.

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Publication Details

Journal
Journal of Materials Chemistry A
Published
2026-01-01
DOI
https://doi.org/10.1039/d5ta10296k
Primary Topic
Perovskite Materials and Applications
Type
article
Field-Weighted Citation Impact
0.00
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article

Mechanistic insights into defect-governed ion migration and phase instability in mixed-halide perovskites

Pengjie Hang, Haitao Zhang, Dong Yang, Xuegong Yu et al.
Journal of Materials Chemistry A
Perovskite Materials and Applications
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Mechanistic insights into defect-governed ion migration and phase instability in mixed-halide perovskites

Pengjie Hang, Haitao Zhang, Dong Yang, Xuegong Yu, fuyi zhou, Lingbo Xu, Zhenyi Ni, Jingjing Xue, Chenyu Wang, Haimeng Xin, Yueran Xiang
article en

Abstract

We reveal defect-governed ion migration in FAPb(I 1− x Br x ) 3 cells: dark transport is dominated by halide interstitials, whereas illumination activates FA-cation migration correlated with deep-level defect density.

Journal of Materials Chemistry A
Zhejiang Sci-Tech University (CN), Institute of Semiconductors (CN), Zhejiang University (CN)
Reduced inequalities
Openalex Percentile: Top 12%
Perovskite Materials and Applications
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