Volume 62, Issue 45 e202308093
Review

Mechanistic Understanding of Oxidation of Tin-based Perovskite Solar Cells and Mitigation Strategies

Zhihao Zhang

Zhihao Zhang

College of Materials Science and Engineering &, Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, 610065 China

Contribution: Conceptualization (lead), Data curation (lead), ​Investigation (lead), Writing - original draft (lead), Writing - review & editing (lead)

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Yuanfang Huang

Yuanfang Huang

College of Materials Science and Engineering &, Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, 610065 China

Contribution: Data curation (supporting), Formal analysis (supporting), Writing - review & editing (supporting)

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Jialun Jin

Jialun Jin

College of Materials Science and Engineering &, Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, 610065 China

Contribution: Data curation (supporting), Formal analysis (supporting), Writing - review & editing (supporting)

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Yiting Jiang

Yiting Jiang

College of Materials Science and Engineering &, Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, 610065 China

Contribution: Data curation (supporting), Formal analysis (supporting), Writing - review & editing (supporting)

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Yuliang Xu

Yuliang Xu

College of Materials Science and Engineering &, Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, 610065 China

Contribution: Data curation (supporting), Formal analysis (supporting), Writing - review & editing (supporting)

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Jingwei Zhu

Jingwei Zhu

College of Materials Science and Engineering &, Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, 610065 China

Contribution: Data curation (supporting), Formal analysis (supporting), Writing - review & editing (supporting)

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Dewei Zhao

Corresponding Author

Dewei Zhao

College of Materials Science and Engineering &, Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, 610065 China

Contribution: Conceptualization (lead), Formal analysis (lead), Funding acquisition (lead), Project administration (lead), Supervision (lead), Writing - review & editing (lead)

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First published: 31 July 2023
Citations: 22

Graphical Abstract

The facile oxidation of Sn-based perovskites is the most crucial issue hindering the development of Sn-based perovskite solar cells. This review concentrates on the oxidation of Sn-based perovskites from the chemical mechanism, detrimental effects at material- and device-level, and especially intrinsic causes/extrinsic causes to provide clear guidelines to accurately suppress the oxidation.

Abstract

Tin (Sn)-based perovskites as the most promising absorber materials for lead-free perovskite solar cells (PSCs) have achieved the record efficiency of over 14 %. Although suppressing the oxidation of Sn-based perovskites is a frequently concerned topic for Sn-based PSCs, many studies have given vague explanations and the mechanisms are still under debate. This is in principal due to the lack of an in-depth understanding of various and complex intrinsic and extrinsic factors causing the oxidation process. In this context, we critically review the chemical mechanism of facile oxidation of Sn-based perovskites and differentiate its detrimental effects at material- and device-level. More importantly, we classify and introduce the intrinsic factors (raw materials and solvent of perovskite precursors) and extrinsic factors (exposure to neutral oxygen and superoxide) causing the oxidation with their corresponding anti-oxidation improvement methods. The presented comprehensive understanding and prospect of the oxidation provide insightful guidance for suppressing the oxidation in Sn-based PSCs “from the beginning to the end”.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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