Thermal Properties of SnSe Nanoflakes: Insights from AFM-Based Scanning Thermal Microscopy

Thermoelectric materials utilize the Seebeck effect to directly convert heat into electricity. Introducing nanostructures into thermoelectric materials can effectively decrease thermal conductivity through phonon scattering at the grain boundaries, consequently enhancing the overall thermoelectric efficiency. SnSe has recently garnered attention due to its remarkably high zT value, positioning it as an exceptional candidate for various practical applications. This study focuses on investigating the thermal properties of SnSe nanoflakes using AFM-based Scanning Thermal Microscopy (SThM). Synthesis of SnSe was achieved through Chemical Vapor Deposition on mica substrates, with the composition of SnSe being confirmed using Energy Dispersive X-ray Spectroscopy.