Theory of optically induced Förster Coupling in van der Waals coupled Heterostuctures

Abstract

We investigate the impact of optically induced Förster coupling in van der Waals heterostructures consisting of graphene and a monolayer transition metal dichalcogenide (TMD). In particular, we predict the corresponding dephasing rates and a fast energy transfer between the TMD layer and graphene being in the picosecond range. Exemplary we find a transition rate of thermalized excitons of about 4 ps${}^{-1}$ in a MoSe${}_2$-graphene stack at room temperature. This timescale is in good agreement with the recently measured exciton lifetime in this heterostructure.

References in corpus (7)

• The electronic properties of graphene
• Vertical Field Effect Transistor based on Graphene-WS2 Heterostructures for flexible and transparent electronics
• Measurement of the optical dielectric function of transition metal dichalcogenide monolayers: MoS2, MoSe2, WS2 and WSe2
• k.p theory for two-dimensional transition metal dichalcogenide semiconductors
• Exciton band structure of monolayer MoS2
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Cited by in corpus (4)

• Strong Single- and Two-Photon Luminescence Enhancement by Nonradiative Energy Transfer across Layered Heterostructure
• Theory of the Coherent Response of Magneto-Excitons and Magneto-Biexcitons in Monolayer Transition Metal Dichalcogenides
• Single- and narrow-line photoluminescence in a boron nitride-supported MoSe${}_2$/graphene heterostructure
• Intertube excitonic coupling in nanotube van der Waals heterostructures