Martensite-like phase transformation of ligand-capped SnS tetrahedrons from π phase to α phase and its impact on H₂ evolution performance.

ABSTRACT: π-Tin sulfide (SnS) is an emerging semiconductor of interest with attractive properties for applications in solar energy conversion and non-linear optics. However, its intrinsic metastability raises concerns and requires further investigation. Here, we report a newly discovered martensite-like phase transition in ligand-capped π-SnS tetrahedrons by a post-annealing treatment. By adjusting the annealing temperature, we found that the desorption of surface ligands initiated the rearrangement of surface atoms, thus triggering a chain phase transformation from π phase to α phase through the displacement of adjacent atoms. Large amounts of boundaries and stacking faults were present in this process, as shown from high-resolution transmission electron microscopy combined with selected area elect

SUBMITTER: Du X 

PROVIDER: S-EPMC12418001 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature