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

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

Poster 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)

Download file (1.35 MB)
Download as zip (1.23 MB)

Collection

Citation

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)

Alternative title: 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

Description:

(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.

Rights: