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Interface Modification of TiO𝟐 Electron Transport Layer with PbCl𝟐 for Perovskiote Solar Cells with Carbon Electrode

State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductor, Chinese Academy of Sciences, Beijing 100083, China
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Sensor, MOE Key Laboratory for Modern Measurement and Control Technology, Beijing Information Science and Technology University, Beijing 100101, China
School of Science, Minzu University of China, Beijing 100081, China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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Abstract

Perovskite Solar Cells (PSCs) have attracted considerable attention because of their unique features and high efficiency. However, the stability of perovskite solar cells remains to be improved. In this study, we modified the TiO2 Electron Transport Layer (ETL) interface with PbCl2. The efficiency of the perovskite solar cells with carbon electrodes increased from 11.28% to 13.34%, and their stability obviously improved. The addition of PbCl2 had no effect on the morphology, crystal structure, and absorption property of the perovskite absorber layer. However, it affected the band energy level alignment of the solar cells and accelerated the electron extraction and transfer at the interface between the perovskite layer and the ETL, thus enhancing the overall photovoltaic performance. The interfacial modification of ETL with PbCl2 is a promising way for the potential commercialization of low-cost carbon electrode-based perovskite solar cells.

Keywords

Perovskite Solar Cell (PSC)Electron Transport Layer (ETL)electron and hole recombinationmodificationstability

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Tsinghua Science and Technology
Volume 27 Issue 4,
August 2022
Pages 741-750
DOI: 10.26599/TST.2021.9010024
Cite this article:
Amraeinia A, Zuo Y, Zheng J, et al. Interface Modification of TiO𝟐 Electron Transport Layer with PbCl𝟐 for Perovskiote Solar Cells with Carbon Electrode. Tsinghua Science and Technology, 2022, 27(4): 741-750. https://doi.org/10.26599/TST.2021.9010024
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