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Towards stable wide-bandgap perovskite absorbers: controlling light-induced halide phase segregation in CsPbI2Br through partial lead substitution

Marina Igorevna Ustinova 1, 2
Marina Igorevna Ustinova
, 
Gennady Viktorovich Shilov 1
Gennady Viktorovich Shilov
, 
Denis Vladimirovich Korchagin 1
Denis Vladimirovich Korchagin
, 
Pavel Anatol'evich Troshin 1, 3
Pavel Anatol'evich Troshin
,  , 
Lyubov' Anatol'evna Frolova 1
Lyubov' Anatol'evna Frolova
10.71267/mencom.7698
Published 2025-07-17
Communication , Volume 35, Issue 5, 573-576
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Ustinova M. I. et al. Towards stable wide-bandgap perovskite absorbers: controlling light-induced halide phase segregation in CsPbI2Br through partial lead substitution // Mendeleev Communications. 2025. Vol. 35. No. 5. pp. 573-576.
GOST all authors (up to 50) Copy
Ustinova M. I., Shilov G. V., Korchagin D. V., Troshin P. A., Aldoshin S. M., Frolova L. A. Towards stable wide-bandgap perovskite absorbers: controlling light-induced halide phase segregation in CsPbI2Br through partial lead substitution // Mendeleev Communications. 2025. Vol. 35. No. 5. pp. 573-576.
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TY - JOUR
DO - 10.71267/mencom.7698
UR - https://mendcomm.colab.ws/publications/10.71267/mencom.7698
TI - Towards stable wide-bandgap perovskite absorbers: controlling light-induced halide phase segregation in CsPbI2Br through partial lead substitution
T2 - Mendeleev Communications
AU - Ustinova, Marina Igorevna
AU - Shilov, Gennady Viktorovich
AU - Korchagin, Denis Vladimirovich
AU - Troshin, Pavel Anatol'evich
AU - Aldoshin, Sergei Mikhailovich
AU - Frolova, Lyubov' Anatol'evna
PY - 2025
DA - 2025/07/17
PB - Mendeleev Communications
SP - 573-576
IS - 5
VL - 35
ER -
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@article{2025_Ustinova,
author = {Marina Igorevna Ustinova and Gennady Viktorovich Shilov and Denis Vladimirovich Korchagin and Pavel Anatol'evich Troshin and Sergei Mikhailovich Aldoshin and Lyubov' Anatol'evna Frolova},
title = {Towards stable wide-bandgap perovskite absorbers: controlling light-induced halide phase segregation in CsPbI2Br through partial lead substitution},
journal = {Mendeleev Communications},
year = {2025},
volume = {35},
publisher = {Mendeleev Communications},
month = {Jul},
url = {https://mendcomm.colab.ws/publications/10.71267/mencom.7698},
number = {5},
pages = {573--576},
doi = {10.71267/mencom.7698}
}
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Ustinova, Marina Igorevna, et al. “Towards stable wide-bandgap perovskite absorbers: controlling light-induced halide phase segregation in CsPbI2Br through partial lead substitution.” Mendeleev Communications, vol. 35, no. 5, Jul. 2025, pp. 573-576. https://mendcomm.colab.ws/publications/10.71267/mencom.7698.

Keywords

all-inorganic perovskite absorber
CsPbI2Br
halide phase segregation
long-term stability.
partial lead substitution
perovskite solar cells
phase stability
photostability

Abstract

The photostability of CsPb0.95M0.1/nI2Br films modified with 30 different substituent Mn+ cations was systematically investigated. It was shown for the first time that light-induced halide phase segregation in CsPbI2Br perovskite films could be completely suppressed by partial replacement of Pb2+ with rationally selected cations: Sr2+, Sn2+, In3+ and Bi3+. The obtained results open the door for the development of photostable wide-bandgap perovskite semiconductors required for high-efficiency tandem solar cells.

Funders

Ministry of Education and Science of the Russian Federation
grant no. 075-15- 2022-1217 (13.2251.21.0163)