Semi-Planar Non-Fullerene Molecules Enhance the Durability of Flexible Perovskite Solar Cells.

ABSTRACT: Flexible perovskite solar cells (FPSCs) represent a promising technology in the development of next-generation photovoltaic and optoelectronic devices. SnO₂ electron transport layers (ETL) typically undergo significant cracking during the bending process of FPSCs, which can significantly compromise their charge transport properties. Herein, the semi-planar non-fullerene acceptor molecule Y6 (BT-core-based fused-unit dithienothiophen [3,2-b]-pyrrolobenzothiadiazole derivative) is introduced as the buffer layer for SnO₂ -based FPSCs. It is found that the Y6 buffer layer can enhance the ability of charge extraction and bending stability for SnO₂ ETL. Moreover, the internal stress of perovskite films is also reduced. As a result, SnO₂ /Y6-based FPSCs

SUBMITTER: Liu H 

PROVIDER: S-EPMC9008411 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature