Bidirectional heterostructures consisting of graphene and lateral MoS₂/WS₂ composites: a first-principles study.

ABSTRACT: First-principles calculations have been performed to explore the structural and electronic properties of bidirectional heterostructures composed of graphene and (MoS₂) _X /(WS₂)_4-X (X = 1, 2, 3) lateral composites and compare them with those of heterobilayers formed by graphene and pristine MS₂ (M = Mo, W). The band gaps of the lateral heterostructures lie between those of pristine MoS₂ and WS₂. The weak coupling between the two layers can induce a tiny band-gap opening of graphene and formation of an n-type Schottky contact at the G-(MoS₂) _X /(WS₂)_4-X interface. Moreover, the combination ratio of MoS₂/WS₂ can contr

SUBMITTER: Tang Y 

PROVIDER: S-EPMC9074164 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature