Theory of optically induced Forster coupling in van der Waals coupled heterostructures

Article

关键词: ENERGY-TRANSFER;    QUANTUM;    SEMICONDUCTORS;    EXCITONS;    GRAPHENE;   

DOI  :  10.1103/PhysRevB.99.035420

来源: SCIE

【 摘 要 】

We investigate the impact of optically induced Forster 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.

【 授权许可】

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