Smelting recrystallization of CsPbBrI<sub>2</sub> perovskites for indoor and outdoor photovoltaics

Wang Kai-Li; Yang Ying-Guo; Lou Yan-Hui; Li Meng; Igbari Femi; Cao Jun-Jie; Chen Jing; Yang Wen-Fan; Dong Chong; Li Lina; Tai Ren-Zhong; Wang Zhao-Kui

doi:10.1016/j.esci.2021.09.001

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May 2021

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Wang Kai-Li, Yang Ying-Guo, Lou Yan-Hui, Li Meng, Igbari Femi, Cao Jun-Jie, Chen Jing, Yang Wen-Fan, Dong Chong, Li Lina, Tai Ren-Zhong, Wang Zhao-Kui. Smelting recrystallization of CsPbBrI2 perovskites for indoor and outdoor photovoltaics[J]. eScience, 2021, 1(1): 53-59. doi: 10.1016/j.esci.2021.09.001

Citation:

Wang Kai-Li, Yang Ying-Guo, Lou Yan-Hui, Li Meng, Igbari Femi, Cao Jun-Jie, Chen Jing, Yang Wen-Fan, Dong Chong, Li Lina, Tai Ren-Zhong, Wang Zhao-Kui. Smelting recrystallization of CsPbBrI₂ perovskites for indoor and outdoor photovoltaics[J]. eScience, 2021, 1(1): 53-59. doi: 10.1016/j.esci.2021.09.001

Citation:

Wang Kai-Li, Yang Ying-Guo, Lou Yan-Hui, Li Meng, Igbari Femi, Cao Jun-Jie, Chen Jing, Yang Wen-Fan, Dong Chong, Li Lina, Tai Ren-Zhong, Wang Zhao-Kui. Smelting recrystallization of CsPbBrI₂ perovskites for indoor and outdoor photovoltaics[J]. eScience, 2021, 1(1): 53-59. doi: 10.1016/j.esci.2021.09.001

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Smelting recrystallization of CsPbBrI₂ perovskites for indoor and outdoor photovoltaics

doi: 10.1016/j.esci.2021.09.001

a.
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
b.
Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204, China
c.
College of Energy Soochow Institute for Energy and Materials Innovations Soochow University Suzhou 215006, China

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Corresponding author: E-mail address: zkwang@suda.edu.cn (Z.-K. Wang)
Received Date: 2021-07-12
Revised Date: 2021-08-09
Accepted Date: 2021-09-10

Available Online: 2021-09-12

Abstract

Abstract

A smelting multiple recrystallization strategy and its effects on the morphology, composition, and defects of CsPbBrI₂ film were investigated. An optimal number (n = 2) of recrystallization cycles improved the crystallinity and phase purity, minimized the grain boundaries, and optimized the crystal structure, yielding a high-quality perovskite film with significantly reduced defects density. The corresponding photovoltaic devices exhibited a champion efficiency of 16.02% under AM 1.5 G illumination and presented an even higher indoor efficiency of 33.50% under an LED (2956 K, P_in: 334.41 μW/cm²). This recrystallization method offers a promising strategy for developing high-performance indoor and outdoor photovoltaics. Direct recrystallization in the cells was also explored to achieve enhanced stability and longer lifetime in humid conditions.
- Perovskite solar cells,
- Recrystallization,
- Trap density,
- Indoor,
- Inorganic

¹ K.L. Wang and Y.G. Yang. contributed equally to this work.

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