Epitaxial Growth of 2D Core-Crown SnS₂/SnSe₂ Heterostructure Through Interfacial Modification with Polyvinylpyrrolidone.

ABSTRACT: Developing generalized strategies for controlled synthesis of 2D heterostructures remains a significant challenge because the existing approaches often suffer from poor reproducibility and scalability. In this study, a solution synthesis approach for epitaxial core-crown heterostructures with controlled band alignment, that overcomes these challenges is reported. Polyvinylpyrrolidone (PVP) is used as a structure-directing agent to reduce lattice mismatch between SnS₂ and SnSe₂ (10-10) surfaces and direct epitaxial growth of SnSe₂ crown on SnS₂ seed. Additionally, PVP adsorption to the basal plane prevents van der Waals stacking and stabilizes 2D heterostructures during synthesis. Driven by interfacial thermodynamics, the formation of the core-cro

SUBMITTER: Liu L 

PROVIDER: S-EPMC11962701 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature