通过自形成相干埋藏界面FAPbIxCl3-x提高FAPbI3钙钛矿太阳能电池开路电压。

IF 4.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2025-01-20 DOI:10.1039/d4cc06599a

Cuina Gao, Sihui Jia, Xiaofei Yin, Zhi Li, Guang Yang, Jing Chen, Zhaoqian Li, Xingtao An

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引用次数: 0

摘要

钙钛矿和电荷输运层之间的界面通常表现出高缺陷浓度，这是开路电压损失的主要原因。钝化钙钛矿和电子传输层之间的界面尤其具有挑战性，因为在钙钛矿涂层过程中，表面处理剂会溶解。在本研究中，FAPbI3在制备过程中同时形成了一个相干的FAPbIxCl3-x埋藏界面。该中间层显著改善了钙钛矿层的电荷提取和传输，同时降低了陷阱态密度。结果，开路电压从1.01 V提高到1.10 V， PCE从19.05%提高到22.89%。

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Enhancing open-circuit voltage in FAPbI₃ perovskite solar cells via self-formation of coherent buried interface FAPbI_xCl_3-x.

The interfaces between the perovskite and charge-transporting layers typically exhibit high defect concentrations, which are the primary cause of open-circuit voltage loss. Passivating the interface between the perovskite and electron-transporting layer is particularly challenging due to the dissolution of surface treatment agents during the perovskite coating. In this study, a coherent FAPbI_xCl_3-x buried interface was simultaneously formed during the preparation of FAPbI₃. This interlayer significantly improved charge extraction and transportation from the perovskite layer, while reducing trap state density. As a result, the open-circuit voltage increased from 1.01 V to 1.10 V, with the PCE improved from 19.05% to 22.89%.

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.