DMSO-Free Processing of Tin-Lead Perovskite Thin Films for Solar Cells with Enhanced Stability.

ABSTRACT: The stability of Sn-Pb perovskite semiconductors thin films remains a major challenge for their integration into efficient and durable photovoltaic devices. In this work, we demonstrate that the incorporation of methylammonium chloride (MACl) in DMSO-free Sn-Pb precursor solutions significantly enhances both the structural and operational stability of Sn-Pb perovskite films and solar cells. MACl-processed films exhibit enhanced crystallinity, environmental stability and photostability, thus tackling the most critical instabilities related to the defect chemistry of tin in tin-based perovskites and halides in lead-based perovskites. We show that Cl^- preferentially resides at the Pb_0.5Sn_0.5I-terminated surface, reducing the formation probability of halide int

SUBMITTER: Poli I 

PROVIDER: S-EPMC12910712 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature