Pressure-induced enhancement in the thermoelectric properties of monolayer and bilayer SnSe₂.

ABSTRACT: The electronic structures of monolayer and bilayer SnSe₂ under pressure were investigated by using first-principles calculations including van der Waals interactions. For monolayer SnSe₂, the variation of electronic structure under pressure is controlled by pressure-dependent lattice parameters. For bilayer SnSe₂, the changes in electronic structure under pressure are dominated by intralayer and interlayer atomic interactions. The n-type thermoelectric properties of monolayer and bilayer SnSe₂ under pressure were calculated on the basis of the semi-classical Boltzmann transport theory. It was found that the electrical conductivity of monolayer and bilayer SnSe₂ can be enhanced under pressure, and such dependence can be attribute

SUBMITTER: Zou D 

PROVIDER: S-EPMC5882711 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature