Cl-terminated Ti3C2 MXene-modulated carbon/CsPbIBr2 interface boosting efficiency and stability of all-inorganic perovskite solar cells
Cl-terminated Ti3C2 MXene-modulated carbon/CsPbIBr2 interface boosting efficiency and stability of all-inorganic perovskite solar cells
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DOI：
10.1016/j.apsusc.2023.156674
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发表时间：
2023-02
影响因子：
6.7
通讯作者：
Yuanxian Xu;Huayan Zhang;Yu Jing;X. Wang;Junqi Gan;Zhongliang Yan;Xiao Liu;Jihuai Wu;Z. Lan
中科院分区：
文献类型：
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作者：
Yuanxian Xu;Huayan Zhang;Yu Jing;X. Wang;Junqi Gan;Zhongliang Yan;Xiao Liu;Jihuai Wu;Z. Lan
In recent years, carbon-based all-inorganic perovskite solar cells without hole transport layers have attracted much attention due to their good stability. However, because of the lack of hole transport layers, there are problems such as poor interface charge extraction and poor energy band alignment. Here, the surface of CsPbIBr2is treated with Ti3C2ClxMXene, where the formed Pb-Cl bonds play a role in passivating defects and improving crystallization, and the adjustable work function of MXene can form a good gradient energy band at the CsPbIBr2/carbon interface. As a result, the Ti3C2ClxMXene passivation strategy successfully improves the hole extraction efficiency and inhibits the charge recombination at the interface based on the improved morphology and crystallization of the CsPbIBr2film. Therefore, the power conversion efficiency of CsPbIBr2solar cells has increased from 8.16 % to 10.43 %, and the long-term stability exceeds 900 h under environmental conditions of 40 % relative humidity.
