A research on the first-principle of zigzag graphene nanoribbons (ZGNRs) with various widths

In this paper,we study the electronic properties of edge-hydrogenated zigzag graphene nanoribbons(ZGNRs) with various widths based on the frst-principle of density functional theory. Our calculation shows that the geometry and electric structure of ZGNRs are in close relation to width,which provides a practical way for revealing nanoribbons' size effect.