Issue 41, 2022

Electron–phonon interaction and ultrafast photoemission from doped monolayer MoS2

Abstract

We have examined the effect of electron–phonon coupling on photoluminescence and ultrafast response of electron doped monolayer MoS2, using a combination of density functional theory, time dependent density functional theory, and many-body theory. For small doping (∼1–3%) of interest here, the electron–phonon coupling parameter is modest (∼0.1–0.2) but its effect on the emissive properties and response of the system to femtosecond (fs) laser pulses is striking. We find an ultrafast (fs) relaxation of the electronic subsystem as well as a high fluence of visible light emission induced by electron phonon interaction. Together with high carrier mobility, these features of monolayer MoS2 may be relevant for optoelectronic technologies.

Graphical abstract: Electron–phonon interaction and ultrafast photoemission from doped monolayer MoS2

Article information

Article type
Paper
Submitted
27 Jun 2022
Accepted
29 Sep 2022
First published
13 Oct 2022

Phys. Chem. Chem. Phys., 2022,24, 25298-25306

Author version available

Electron–phonon interaction and ultrafast photoemission from doped monolayer MoS2

N. Nayyar, D. Le, V. Turkowski and T. S. Rahman, Phys. Chem. Chem. Phys., 2022, 24, 25298 DOI: 10.1039/D2CP02905G

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