Effect of Phenethylammonium Thiocyanate Additive in Tin Perovskite for Efficient and Stable Pb-free Perovskite Solar Cells

Dhruba B. Khadka; Yasuhiro Shirai; Masatoshi Yanagida; Kenjiro Miyano

doi:10.1109/pvsc48317.2022.9938869

論文 Effect of Phenethylammonium Thiocyanate Additive in Tin Perovskite for Efficient and Stable Pb-free Perovskite Solar Cells

Dhruba B. Khadka (National Institute for Materials Science) ; Yasuhiro Shirai (National Institute for Materials Science) ; Masatoshi Yanagida (National Institute for Materials Science) ; Kenjiro Miyano (National Institute for Materials Science)

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Dhruba B. Khadka, Yasuhiro Shirai, Masatoshi Yanagida, Kenjiro Miyano. Effect of Phenethylammonium Thiocyanate Additive in Tin Perovskite for Efficient and Stable Pb-free Perovskite Solar Cells. Conference Record of the IEEE Photovoltaic Specialists Conference. 2022, (), 4-6. https://doi.org/10.1109/pvsc48317.2022.9938869

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(abstract)

The phenethylammonium thiocyanate (PEASCN) was introduced into the FASnI 3 perovskite film as a pseudohalide functional additive. This results in the suppression of Sn-oxidation and compact and larger grain film with better crystallinity. The device with PEASCN additive improved the power conversion efficiency (PCE) from 4.52% (control) to 9.65% (PEASCN). The device analysis revealed that the PEASCN additive has improved the optoelectronic properties coupled with a higher diffusion potential and passivation of defect densities in the Sn-PSCs. This report suggests that the pseudohalide-based functional additive is propitious for film growth, modification of surface chemistry, and defects at interface and bulk.

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