Theory of optically induced Förster coupling in van der Waals coupled heterostructures
Journal article, 2019

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 MoSe2-graphene stack at room temperature. This time scale is in good agreement with the recently measured exciton lifetime in this heterostructure.

graphene

Author

Malte Selig

Technische Universität Berlin

Chalmers, Physics, Condensed Matter Theory

Ermin Malic

Chalmers, Physics, Condensed Matter Theory

Kwang Jun Ahn

Ajou University

Norbert Koch

Humboldt University of Berlin

Andreas Knorr

Technische Universität Berlin

Physical Review B

24699950 (ISSN) 24699969 (eISSN)

Vol. 99 3 035420

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Condensed Matter Physics

DOI

10.1103/PhysRevB.99.035420

More information

Latest update

2/18/2019