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arXiv · 1903.00293

Theory of optically induced F\"orster Coupling in van der Waals coupled Heterostuctures

Malte Selig·Ermin Malic·Kwang Jun Ahn·Norbert Koch·Andreas Knorr
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Abstract

We investigate the impact of optically induced F\"orster 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.

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Malte Selig, Ermin Malic, Kwang Jun Ahn, Norbert Koch, Andreas Knorr. 2019-03-01. Theory of optically induced F\"orster Coupling in van der Waals coupled Heterostuctures. https://doi.org/10.1103/physrevb.99.035420

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