Thermoelectric Properties of Monolayer MoS 2 in the Presence of Magnetic Field and Electron/Hole Doping by Using the Holstein Model
Year: 2020
Type: article
Abstract: In this research, we investigate the influence of the external magnetic field, chemical potential, and electron-phonon coupling strength on thermal conductivity and Seebeck coefficient of monolayer MoS 2 by using the Holstein model. The Green’s function is used to calculate the variation of thermoelectric properties of the monolayer MoS 2 . The numerical results reveal that the thermal conductivity and Seebeck coefficient are strongly dependent on electron-phonon coupling strength, electron and hole doping, and applying an external magnetic field. The effects of an external magnetic field, electron doping, and electron-phonon coupling on thermal conductivity are similar, and all three reduce it, but hole doping increases it. We show that electron doping has a great effect on the Seebeck coefficient of the monolayer MoS 2 , so that changes it from the p-type to n-type d semiconductor. The chemical potential effect in the high-temperature area on the Seebeck coefficient is negligible. We got that thermoelectric power decreases with an increase in electron-phonon coupling strength. As new results, we reveal thatthe semiconductor type of monolayer MoS 2 is sensitive to the electron-phonon coupling and electron doping.
Authors: Mona Abdi, Bandar Astinchap
Institution: University of Kurdistan
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W3081340201