SnSe_1-xS_x Alloys: Anisotropic Van der Waals Semiconductors with Tunable Bandgaps.

ABSTRACT: Alloying is one of the main tools of bandgap engineering, allowing the tuning of crystal structure, lattice parameters, and electronic structure of 3D and 2D/layered semiconductors. Among the latter, it can play a key role in tailoring the properties of tin monochalcogenides, a class of van der Waals semiconductors of interest for optoelectronics, thermoelectrics, ferroelectrics, and valleytronics. Here, the study investigates the synthesis and properties of large flakes of the anion substitution alloys SnSe_1-xS_x. Alloy flakes across a wide range of compositions are obtained systematically by repeated growth from the same mixed (SnS, SnSe) powder precursor. Combined experiment and theory show full miscibility for all compositions, along with tunable lattice constants,

SUBMITTER: Sutter P 

PROVIDER: S-EPMC12809197 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature