钙钛矿活性层添加剂CdS 和 Cd(SCN2H4)2Cl2对钙钛矿太阳能电池性能的影响

郑继红; 朱良欣; 申志涛; 李福民; 凌兰雨; 李桧林; 陈冲

doi:10.1007/s12613-021-2316-0

Volume 29 Issue 2

Feb. 2022

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文章导航 > 矿物冶金与材料学报（英文） > 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

Cite this article as:

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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研究论文

钙钛矿活性层添加剂CdS 和 Cd(SCN₂H₄)₂Cl₂对钙钛矿太阳能电池性能的影响

1)
河南大学光伏材料省重点实验室，开封 475004，中国
2)
河南大学物理与电子学院，开封 475004，中国

* 共同第一作者

通讯作者:
凌兰雨    E-mail: 10110131@henu.edu.cn

李桧林    E-mail: leehl@vip.henu.edu.cn

陈冲    E-mail: chongchen@henu.edu.cn

文章亮点

(1) 通过前驱液共混法在钙钛矿活性层中原位生成CdS:Cd(SCN₂H₄)₂Cl₂。
(2) 研究了 CdS:Cd(SCN₂H₄)₂Cl₂对钙钛矿晶体薄膜光电性质的影响。
(3) 探究了 CdS:Cd(SCN₂H₄)₂Cl₂对钙钛矿电池性能的影响。

中文摘要

制备高质量的钙钛矿薄膜对于高性能的钙钛矿太阳能电池非常重要。然而，钙钛矿晶体中的缺陷会影响钙钛矿太阳能电池的光电转化效率和稳定性。为了解决这个问题，本研究将CdS和络合物Cd(SCN₂H₄)₂Cl₂掺入到CH₃NH₃PbI₃活性层中，并进一步分析了CdS和络合物Cd(SCN₂H₄)₂Cl₂的不同掺杂浓度对钙钛矿太阳能电池性能和稳定性的影响。结果表明，CdS和Cd(SCN₂H₄)₂Cl₂在CH₃NH₃PbI₃中的适当的掺杂浓度可以提高钙钛矿太阳能电池的性能。研究结果发现，CdS和Cd(SCN₂H₄)₂Cl₂可以有效降低钙钛矿晶体中的缺陷，减少电池内部的电荷复合，促进电荷在TiO₂和钙钛矿界面的分离和输运。同时，由于钙钛矿晶体中缺陷的减少和CdS:Cd(SCN₂H₄)₂Cl₂:CH₃NH₃PbI₃体异质结薄膜质量的优化，钙钛矿太阳能电池的稳定性也明显提高。

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Research Article

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

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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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