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(a) Representation of a MoS2Graphene–WS2 heterostructure; (b) Band alignment at the heterojunction between MoS2 and WS2; (c) photoresponsivity values for different light power input of the WS2-Gr-MoS2 heterostructure (black dots), compared to the responsivity of the single TMDs. Reprinted with permission from ref. [57]. © 2017, John Wiley and Sons.
