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Updated: Jul 9, 2025
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
Simultaneous Incorporation of CsI in the Two-step Deposition Process Boosts the Power Conversion Efficiency and
Nian Cheng1, Weiwei Li1, Dingshan Zheng1
1School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, 434023, China.
Abstract:
Two-step deposition method has been widely exploited to fabricate FA1-x Csx PbI3 perovskite solar cells. However, in previous studies, CsI is mainly added into the PbI2 precursor with DMF/DMSO as solvent. Here in this study, a novel method to fabricate FA1-x Csx PbI3 perovskite has been proposed. The CsI is simultaneously added into the PbI2 precursor and the organic FAI/MACl salts solution in our modified two-step deposition process. The resulting FA1-x Csx PbI3 film exhibits larger perovskite crystals and suppressed defect density (4.05×1015 cm-3 ) compared with the reference perovskite film (9.23×1015 cm-3 ) without CsI. Therefore, the obtained FA1-x Csx PbI3 perovskite solar cells have demonstrated superior power conversion efficiencies (PCE=21.96 %) together with better long-term device stability.
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