Imidazole Derivative Assisted Crystallization for High-Efficiency Mixed Sn–Pb Perovskite Solar Cells

Bingxu Liu; Haoyu Chen; Jiupeng Cao; Xianglin Chen; Jiankai Xie; Yuting Shu; Feng Yan; Wei Huang; Tianshi Qin

doi:10.1002/adfm.202310828

Imidazole Derivative Assisted Crystallization for High-Efficiency Mixed Sn–Pb Perovskite Solar Cells

Bingxu Liu, Haoyu Chen, Jiupeng Cao, Xianglin Chen, Jiankai Xie, Yuting Shu, Feng Yan, Wei Huang, Tianshi Qin

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Mixed Sn–Pb perovskites with narrow bandgaps and high optical absorption coefficients are promising photovoltaic materials. However, the easy oxidation of Sn²⁺ and fast crystallization of mixed Sn–Pb perovskites still limit the efficiency of mixed Sn–Pb perovskite solar cells (PSCs). Here, an imidazole derivative 2-(Aminomethyl)imidazole dihydrochloride (2-AD) to suppress the oxidation of Sn²⁺ and improve the perovskite film quality through coordination with Sn²⁺/Pb²⁺ ions is introduced. The optimized devices show a high power conversion efficiency of 22.31% with outstanding long-term illumination stability. This work provides an effective strategy to achieve efficient and stable mixed Sn–Pb PSCs.

Original language	English
Article number	2310828
Journal	Advanced Functional Materials
Volume	34
Issue number	6
DOIs	https://doi.org/10.1002/adfm.202310828
State	Published - 5 Feb 2024

Keywords

Sn–Pb mixed perovskites
crystallization
inhibited oxidation
stability

UN SDGs

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

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10.1002/adfm.202310828

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title = "Imidazole Derivative Assisted Crystallization for High-Efficiency Mixed Sn–Pb Perovskite Solar Cells",

abstract = "Mixed Sn–Pb perovskites with narrow bandgaps and high optical absorption coefficients are promising photovoltaic materials. However, the easy oxidation of Sn2+ and fast crystallization of mixed Sn–Pb perovskites still limit the efficiency of mixed Sn–Pb perovskite solar cells (PSCs). Here, an imidazole derivative 2-(Aminomethyl)imidazole dihydrochloride (2-AD) to suppress the oxidation of Sn2+ and improve the perovskite film quality through coordination with Sn2+/Pb2+ ions is introduced. The optimized devices show a high power conversion efficiency of 22.31% with outstanding long-term illumination stability. This work provides an effective strategy to achieve efficient and stable mixed Sn–Pb PSCs.",

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author = "Bingxu Liu and Haoyu Chen and Jiupeng Cao and Xianglin Chen and Jiankai Xie and Yuting Shu and Feng Yan and Wei Huang and Tianshi Qin",

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T1 - Imidazole Derivative Assisted Crystallization for High-Efficiency Mixed Sn–Pb Perovskite Solar Cells

AU - Liu, Bingxu

AU - Chen, Haoyu

AU - Cao, Jiupeng

AU - Chen, Xianglin

AU - Xie, Jiankai

AU - Shu, Yuting

AU - Yan, Feng

AU - Huang, Wei

AU - Qin, Tianshi

PY - 2024/2/5

Y1 - 2024/2/5

N2 - Mixed Sn–Pb perovskites with narrow bandgaps and high optical absorption coefficients are promising photovoltaic materials. However, the easy oxidation of Sn2+ and fast crystallization of mixed Sn–Pb perovskites still limit the efficiency of mixed Sn–Pb perovskite solar cells (PSCs). Here, an imidazole derivative 2-(Aminomethyl)imidazole dihydrochloride (2-AD) to suppress the oxidation of Sn2+ and improve the perovskite film quality through coordination with Sn2+/Pb2+ ions is introduced. The optimized devices show a high power conversion efficiency of 22.31% with outstanding long-term illumination stability. This work provides an effective strategy to achieve efficient and stable mixed Sn–Pb PSCs.

AB - Mixed Sn–Pb perovskites with narrow bandgaps and high optical absorption coefficients are promising photovoltaic materials. However, the easy oxidation of Sn2+ and fast crystallization of mixed Sn–Pb perovskites still limit the efficiency of mixed Sn–Pb perovskite solar cells (PSCs). Here, an imidazole derivative 2-(Aminomethyl)imidazole dihydrochloride (2-AD) to suppress the oxidation of Sn2+ and improve the perovskite film quality through coordination with Sn2+/Pb2+ ions is introduced. The optimized devices show a high power conversion efficiency of 22.31% with outstanding long-term illumination stability. This work provides an effective strategy to achieve efficient and stable mixed Sn–Pb PSCs.

KW - Sn–Pb mixed perovskites

KW - crystallization

KW - inhibited oxidation

KW - stability

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Imidazole Derivative Assisted Crystallization for High-Efficiency Mixed Sn–Pb Perovskite Solar Cells

Abstract

Keywords

UN SDGs

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