  Combining the electronic structures of two-dimensional monolayers in
ultrathin hybrid nanocomposites is expected to display new properties beyond
their simplex components. Here, first-principles calculations are performed to
study the structural, electronic and optical properties of hybrid graphene and
phosphorene nanocomposite. It turns out that weak van der Waals interactions
dominate between graphene and phosphorene with their intrinsic electronic
properties preserved. Hybrid graphene and phosphorene nanocomposite shows
tunable band gaps at graphene's Dirac point and a transition from hole doing to
electron doing for graphene as the interfacial distance decreases. Charge
transfer between graphene to phosphorene induces interfacial electron-hole
pairs in hybrid graphene and phosphorene nanocomposite with enhanced visible
light response.
