Volume 6, Issue 7 2200280
Review

In Situ Characterization for Understanding the Degradation in Perovskite Solar Cells

Xin Meng

Xin Meng

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074 China

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Xueying Tian

Xueying Tian

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074 China

China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan, Hubei, 430073 China

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Shasha Zhang

Corresponding Author

Shasha Zhang

School of Materials Science and Engineering & Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, Henan, 450001 China

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Jing Zhou

Jing Zhou

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074 China

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Yiqiang Zhang

Yiqiang Zhang

School of Materials Science and Engineering & Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, Henan, 450001 China

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Zonghao Liu

Corresponding Author

Zonghao Liu

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074 China

Hubei Province, Optics Valley Laboratory, Hubei, 430074 China

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Wei Chen

Corresponding Author

Wei Chen

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074 China

Hubei Province, Optics Valley Laboratory, Hubei, 430074 China

Shenzhen Key Laboratory of Nanobiomechanics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055 China

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First published: 14 April 2022
Citations: 15

Abstract

In the past decade, organic–inorganic hybrid perovskite solar cells (PSCs) have made unprecedented progress and recently achieved high efficiency of over 25%, comparable with commercial silicon solar cells. However, PSCs still face poor long-term stability hindering their commercial application. Because PSCs undergo severe degradation under environmental stress factors, such as moisture, heat, light, and electrical bias. Thus, exploring and evaluating the degradation pathways of perovskites and the degradation mechanisms of PSCs is quite essential. In situ diagnostic techniques can track the real-time changes of structure, morphology, and optoelectronic properties of the materials in the device during the degradation process. Herein, the progress on in situ characterization for understanding the degradation in PSCs is reviewed, including advanced characterization techniques in the aspects of electron microscopy, X-Ray, and optoelectronic spectroscopy. Besides, in situ characterization tracking the degradation process of perovskite material films from typical methylamine (MA) perovskite to formamidinium (FA)–cesium (Cs) mixed-cation perovskite and PSCs dependent on external factors is also discussed. This overview can provide a further understanding of the stability of PSCs and solve the problems on their road to commercialization. Finally, the future perspectives of in situ characterization for understanding the degradation of PSCs are provided at the end of this review.

Conflict of Interest

The authors declare no conflict of interest.

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