Effects of the incorporation amounts of CdS and Cd(SCN2H4)2Cl2 on the performance of perovskite solar cells

Jihong Zheng; Liangxin Zhu; Zhitao Shen; Fumin Li; Lanyu Ling; Huilin Li; Chong Chen

doi:10.1007/s12613-021-2316-0

Volume 29 Issue 2

Feb. 2022

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2022 > 29(2): 283-291

Jihong Zheng, Liangxin Zhu, Zhitao Shen, Fumin Li, Lanyu Ling, Huilin Li, and Chong Chen, Effects of the incorporation amounts of CdS and Cd(SCN₂H₄)₂Cl₂ on the performance of perovskite solar cells, Int. J. Miner. Metall. Mater., 29(2022), No. 2, pp. 283-291. https://doi.org/10.1007/s12613-021-2316-0

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Jihong Zheng, Liangxin Zhu, Zhitao Shen, Fumin Li, Lanyu Ling, Huilin Li, and Chong Chen, Effects of the incorporation amounts of CdS and Cd(SCN2H4)2Cl2 on the performance of perovskite solar cells, Int. J. Miner. Metall. Mater., 29(2022), No. 2, pp. 283-291. https://doi.org/10.1007/s12613-021-2316-0

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Research Article

Effects of the incorporation amounts of CdS and Cd(SCN₂H₄)₂Cl₂ on the performance of perovskite solar cells

+ Author Affiliations

Corresponding authors:
Lanyu Ling    E-mail: 10110131@henu.edu.cn

Huilin Li    E-mail: leehl@vip.henu.edu.cn

Chong Chen    E-mail: chongchen@henu.edu.cn
Received: 13 April 2021; Revised: 10 June 2021; Accepted: 11 June 2021; Available online: 12 June 2021

Abstract

Abstract

An excellent organolead halide perovskite film is important for the good performance of perovskite solar cells (PSCs). However, defects in perovskite crystals can affect the photovoltaic properties and stability of solar cells. To solve this problem, this study incorporated a complex of CdS and Cd(SCN₂H₄)₂Cl₂ into the CH₃NH₃PbI₃ active layer. The effects of different doping concentrations of CdS and Cd(SCN₂H₄)₂Cl₂ on the performance and stability of PSCs were analyzed. Results showed that doping appropriate incorporation concentrations of CdS and Cd(SCN₂H₄)₂Cl₂ in CH₃NH₃PbI₃ can improve the performance of the prepared solar cells. In specific, CdS and Cd(SCN₂H₄)₂Cl₂ can effectively passivate the defects in perovskite crystals, thereby suppressing the charge recombination in PSCs and promoting the charge extraction at the TiO₂/perovskite interface. Due to the reduction of perovskite crystal defects and the enhancement of compactness of the CdS:Cd(SCN₂H₄)₂Cl₂:CH₃NH₃PbI₃ composite film, the stability of PSCs is significantly improved.
- perovskite solar cells;
- charge extraction;
- defect passivation;
- incorporation concentration

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