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

2 , the applied electric fields are associated with a decreasing trend in band gaps for the above systems because field-induced repulsion among the electronic levels results in a shift in conduction band minimum (CBM) toward the Fermi level ( E F ), consequently, a reduction in band gaps (Fig.

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