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We report ultrafast pump-probe measurements on a graphene/MoS2 heterostructure and demonstrate sub picosecond exciton dissociation and charge transfer from MoS2 to graphene, one order of magnitude faster than in type II two-dimensional heterostructures [1]. The process can be controlled by applying an external gate and shifting the Fermi level of graphene. For pump-probe measurements we excite the...
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