Thermal transport in semiconductor nanostructures, graphene and related two-dimensional materials

TL;DR

This review discusses experimental and theoretical insights into thermal transport in various semiconductor nanostructures and 2D materials, focusing on phonon engineering and factors affecting thermal conductivity.

Contribution

It provides a comprehensive overview of phonon spectra modification and thermal conductivity dependence in 2D materials and nanostructures, highlighting recent advances.

Findings

Phonon energy spectra modification influences thermal conductivity.

Thermal conductivity depends on temperature, size, defects, edges, and strain.

Phonon engineering can optimize electrical and heat conduction.

Abstract

We review experimental and theoretical results on thermal transport in semiconductor nanostructures (multilayer thin films, core/shell and segmented nanowires), single- and few-layer graphene, hexagonal boron nitride, molybdenum disulfide and black phosphorus. Different possibilities of phonon engineering for optimization of electrical and heat conductions are discussed. The role of the phonon energy spectra modification on the thermal conductivity in semiconductor nanostructures is revealed. The dependence of thermal conductivity in graphene and related two-dimensional (2D) materials on temperature, flake size, defect concentration, edge roughness and strain is analyzed.