FACl as a Bifunctional Additive to Enhance the Performance of Lead-Free Antimony-Based Perovskite Solar Cells.

ABSTRACT: Lead halide perovskite solar cells (PSCs) have shown tremendous progress in the last few years. However, highly toxic Pb and its instability have restricted their further development. On the other hand, antimony-based perovskites such as cesium antimony iodide (Cs₃Sb₂I₉) have shown high stability but low power conversion efficiency (PCE) due to the limited transfer of photocarriers and the poor quality of films. Here, we present a novel method to improve the performance of Cs₃Sb₂I₉ PSCs through a FACl-modified buried interface. FACl acts as a bi-functional additive, and FA incorporation enhances the crystallinity and light absorption of films. Furthermore, treatment with FACl optimizes the level position of Cs₃Sb<

SUBMITTER: Gao X 

PROVIDER: S-EPMC12029204 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature