Moreover, the mechanical properties of (4, 8) carbon sheet are evaluated from the Young’s modulus and intrinsic strength calculations. We find this is a stable planar semiconducting carbon sheet with a bandgap between 0.43 and 1.01 eV and whose mechanical properties are as good as graphene’s. The application of graphene in semiconducting devices is hindered by its lack of a bandgap. Up to now, two different strategies have been employed to fabricate semiconducting two-dimensional crystals: opening a bandgap in graphene [1-3] or using another two-dimensional crystal with a large intrinsic bandgap .

semiconducting carbon sheet with a bandgap between 0.43 and 1.01 eV and whose mechanical properties are as good as graphene’s. (Some figures may appear in colour only in the online journal) The carbon family is expanding with many allotropes because semiconducting carbon sheet with a bandgap between 0.43 and 1.01 eV and whose mechanical properties are as good as graphene’s. (Some figures may appear in colour only in the online journal) The carbon family is expanding with many allotropes because