Regulating Compressive Strain Enables High-Performance Tin-Based Perovskite Solar Cells

Jialun Jin; Zhihao Zhang; Shengli Zou; Fangfang Cao; Yuanfang Huang; Yiting Jiang; Zhiyu Gao; Yuliang Xu; Junyu Qu; Xiaoxue Wang; Cong Chen; Chuanxiao Xiao; Shengqiang Ren; Dewei Zhao

doi:10.1002/aenm.202403718

Regulating Compressive Strain Enables High-Performance Tin-Based Perovskite Solar Cells

Jialun Jin, Zhihao Zhang, Shengli Zou, Fangfang Cao, Yuanfang Huang, Yiting Jiang, Zhiyu Gao, Yuliang Xu, Junyu Qu, Xiaoxue Wang, Cong Chen, Chuanxiao Xiao, Shengqiang Ren, Dewei Zhao^*

^*Corresponding author for this work

School of Energy and Environment

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

23 Citations (Scopus)

Abstract

Tin (Sn)-based perovskites have emerged as promising alternatives to lead (Pb)-based perovskites in thin-film photovoltaics due to their comparable properties and reduced toxicity. Strains in perovskites can be tailored to modulate their optoelectronic properties, but mechanisms for the effects of strains on Sn-based perovskite films and devices are unrevealed and corresponding strain engineering is unexplored. Herein, a strain engineering strategy is developed through incorporating 4-fluorobenzylammonium halide salts (FBZAX, X = I, Br, Cl) into the perovskite precursor to regulate the strain effects in resultant Sn-based perovskite films. It is found that a moderate level of compressive strain achieved by FBZABr alleviates the dislocations within perovskites to enhance carrier transport and reduces the defect density to prolong carrier lifetime. These improvements enable a champion efficiency exceeding 14% of Sn-based perovskite solar cells with excellent operational stability. © 2024 Wiley-VCH GmbH.

Original language	English
Article number	2403718
Journal	Advanced Energy Materials
Volume	15
Issue number	14
Online published	1 Dec 2024
DOIs	https://doi.org/10.1002/aenm.202403718
Publication status	Published - 8 Apr 2025

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

compressive strain
defect density
dislocation
strain engineering
tin-based perovskite solar cells

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abstract = "Tin (Sn)-based perovskites have emerged as promising alternatives to lead (Pb)-based perovskites in thin-film photovoltaics due to their comparable properties and reduced toxicity. Strains in perovskites can be tailored to modulate their optoelectronic properties, but mechanisms for the effects of strains on Sn-based perovskite films and devices are unrevealed and corresponding strain engineering is unexplored. Herein, a strain engineering strategy is developed through incorporating 4-fluorobenzylammonium halide salts (FBZAX, X = I, Br, Cl) into the perovskite precursor to regulate the strain effects in resultant Sn-based perovskite films. It is found that a moderate level of compressive strain achieved by FBZABr alleviates the dislocations within perovskites to enhance carrier transport and reduces the defect density to prolong carrier lifetime. These improvements enable a champion efficiency exceeding 14% of Sn-based perovskite solar cells with excellent operational stability. {\textcopyright} 2024 Wiley-VCH GmbH.",

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author = "Jialun Jin and Zhihao Zhang and Shengli Zou and Fangfang Cao and Yuanfang Huang and Yiting Jiang and Zhiyu Gao and Yuliang Xu and Junyu Qu and Xiaoxue Wang and Cong Chen and Chuanxiao Xiao and Shengqiang Ren and Dewei Zhao",

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doi = "10.1002/aenm.202403718",

language = "English",

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TY - JOUR

T1 - Regulating Compressive Strain Enables High-Performance Tin-Based Perovskite Solar Cells

AU - Jin, Jialun

AU - Zhang, Zhihao

AU - Zou, Shengli

AU - Cao, Fangfang

AU - Huang, Yuanfang

AU - Jiang, Yiting

AU - Gao, Zhiyu

AU - Xu, Yuliang

AU - Qu, Junyu

AU - Wang, Xiaoxue

AU - Chen, Cong

AU - Xiao, Chuanxiao

AU - Ren, Shengqiang

AU - Zhao, Dewei

PY - 2025/4/8

Y1 - 2025/4/8

N2 - Tin (Sn)-based perovskites have emerged as promising alternatives to lead (Pb)-based perovskites in thin-film photovoltaics due to their comparable properties and reduced toxicity. Strains in perovskites can be tailored to modulate their optoelectronic properties, but mechanisms for the effects of strains on Sn-based perovskite films and devices are unrevealed and corresponding strain engineering is unexplored. Herein, a strain engineering strategy is developed through incorporating 4-fluorobenzylammonium halide salts (FBZAX, X = I, Br, Cl) into the perovskite precursor to regulate the strain effects in resultant Sn-based perovskite films. It is found that a moderate level of compressive strain achieved by FBZABr alleviates the dislocations within perovskites to enhance carrier transport and reduces the defect density to prolong carrier lifetime. These improvements enable a champion efficiency exceeding 14% of Sn-based perovskite solar cells with excellent operational stability. © 2024 Wiley-VCH GmbH.

AB - Tin (Sn)-based perovskites have emerged as promising alternatives to lead (Pb)-based perovskites in thin-film photovoltaics due to their comparable properties and reduced toxicity. Strains in perovskites can be tailored to modulate their optoelectronic properties, but mechanisms for the effects of strains on Sn-based perovskite films and devices are unrevealed and corresponding strain engineering is unexplored. Herein, a strain engineering strategy is developed through incorporating 4-fluorobenzylammonium halide salts (FBZAX, X = I, Br, Cl) into the perovskite precursor to regulate the strain effects in resultant Sn-based perovskite films. It is found that a moderate level of compressive strain achieved by FBZABr alleviates the dislocations within perovskites to enhance carrier transport and reduces the defect density to prolong carrier lifetime. These improvements enable a champion efficiency exceeding 14% of Sn-based perovskite solar cells with excellent operational stability. © 2024 Wiley-VCH GmbH.

KW - compressive strain

KW - defect density

KW - dislocation

KW - strain engineering

KW - tin-based perovskite solar cells

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U2 - 10.1002/aenm.202403718

DO - 10.1002/aenm.202403718

M3 - RGC 21 - Publication in refereed journal

SN - 1614-6832

VL - 15

JO - Advanced Energy Materials

JF - Advanced Energy Materials

IS - 14

M1 - 2403718

ER -

Regulating Compressive Strain Enables High-Performance Tin-Based Perovskite Solar Cells

Abstract

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