Surface Passivation of Sn-Based Wide Band Gap Perovskite Solar Cells Using Functional Molecules

KHADKA Dhruba Bahadur; YANAGIDA Masatoshi; SAHARA Ryoji; SHIRAI Yasuhiro

ポスター Surface Passivation of Sn-Based Wide Band Gap Perovskite Solar Cells Using Functional Molecules

KHADKA Dhruba Bahadur (Research Center for Energy and Environmental Materials (GREEN)/Battery and Cell Materials Field/Photovoltaic Materials Group, National Institute for Materials Science) ; YANAGIDA Masatoshi (Research Center for Energy and Environmental Materials (GREEN)/Battery and Cell Materials Field/Photovoltaic Materials Group, National Institute for Materials Science) ; SAHARA Ryoji (Research Center for Structural Materials/Materials Evaluation Field/Computational Structural Materials Group, National Institute for Materials Science) ; SHIRAI Yasuhiro (Research Center for Energy and Environmental Materials (GREEN)/Battery and Cell Materials Field/Photovoltaic Materials Group, National Institute for Materials Science)

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引用

KHADKA Dhruba Bahadur, YANAGIDA Masatoshi, SAHARA Ryoji, SHIRAI Yasuhiro. Surface Passivation of Sn-Based Wide Band Gap Perovskite Solar Cells Using Functional Molecules. https://doi.org/10.48505/nims.5561

(BibTeX)

代替タイトル: 機能性分子を用いたSn系ワイドバンドギャップペロブスカイト太陽電池の表面パッシベーション

説明:

(abstract)

Surface passivation with multifunctional molecules is a powerful approach to enhancing the performance and stability of perovskite solar cells (PSCs). This study reports the fabrication of wide-bandgap tin-based perovskite solar cells (WB-Sn-PSCs) with a bandgap of 1.68 eV, achieving a power conversion efficiency of 11.14%. Molecular surface passivation using 4-Fluoro-benzohydrazide (F-BHZ) significantly improves device performance and stability by engineering both the surface and bulk properties of the WB-Sn-HP film. F-BHZ treatment strengthens electrostatic potential and molecular interactions with functional groups, mitigating surface defects and suppressing Sn²⁺ oxidation, as confirmed by theoretical calculations. This work highlights the potential of advanced chemical engineering strategies to optimize non-toxic, lead-free perovskite solar cells, advancing their competitiveness as environmentally friendly photovoltaic solutions.

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