Ultra-Thin Lead Sulfide Capping for Stabilizing Tin Halide Perovskite Solar Cells.

ABSTRACT: Addressing the inherent instability of tin-based perovskite solar cells (PSCs), a facile approach is introduced to simultaneously enhance their stability and performance. This study demonstrates the implementation of an ultra-thin (≈3 nm) dual-functional lead sulfide (PbS) capping layer, formed via a sequential deposition. This PbS layer serves a critical dual role: first, as a robust protective barrier against oxidation and moisture, effectively mitigating the degradation of the underlying tin-based perovskite; and second, by improving interfacial electronic properties to facilitate efficient charge extraction. Specifically, the PbS layer not only provides conformal coverage and minimizes non-radiative recombination but also acts as an n-type interfacial layer, promoting electron transpor

SUBMITTER: Chan PF 

PROVIDER: S-EPMC12508707 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature