Enhanced efficiency and photostability of mesoporous BaSnO<SUB>3</SUB> based perovskite solar cells
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초록
내용
As reported previously, TiO2 used as an electron-transporting layer (ETL) has unwanted photocatalytic reactivity with perovskite materials and low mobility, thereby requiring further treatments. Therefore, it is critical issue to explore new metal oxide ETLs for efficient and stable PSCs in PSC fields. Previously, we introduced the planar PSCs composed of nanoparticle La doped BaSnO3 (NP-BSO) with MAPbI3 heterojunction. Even though NP-BSO based planar PSCs showed high conversion efficiency over 21% and excellent photostability, it still remains hysteresis issue. In this study, we will present the fabrication process based on BaSnO3-FAPbI3 heterojunction, resulting in superior device performance with great photostability and storage stability compared to TiO2 counterpart.