Thermal Conductivities and Interfacial Thermal Conductance of 1- to 3-Layer WSe$_2$

TL;DR

This study measures the thermal conductivities and interfacial thermal conductance of 1- to 3-layer WSe₂ using opto thermal Raman, providing insights into heat transport in atomically thin TMDC materials.

Contribution

It introduces the use of opto thermal Raman to quantify thermal properties of WSe₂ across different layer numbers, a novel application for this material.

Findings

Thermal conductivity varies with layer number.

Interfacial thermal conductance measured for WSe₂.

Layer-dependent heat transport properties identified.

Abstract

Atomically thin materials such as graphene and semiconducting transition metal dichalcogenides have attracted extensive interest in recent years, motivating investigation into multiple properties. In this work, we used the opto thermal Raman technique to measure the thermal transport properties of a popular TMDC material WSe$_2$, in single atomic layer, bilayer, and trilayer forms.