Structural, Optical and Thermal Behavior investigation of 2D Bi2Te3/Sb2Te3 in-plane Heterostructures via Aberration Corrected STEM and EELS

Bismuth telluride (Bi2Te3) and antimony telluride (Sb2Te3) based low-dimensional materials are considered versatile semiconductors due to their outstanding thermoelectric properties as well as topological insulating properties. Bi2Te3 and Sb2Te3 based in-plane heterostructures are synthesized by solvothermal method as a facile and cost-effective technique. While surface plasmon resonances (SPRs) in 2D Bi2Te3 nanoplates been shown, little has been done to investigate the effect of alloying elements and heterojunctions in this family of crystals. In-plane heterosturcutres can act as a potential route to make tunable semiconductor based plasmonic materials.