The electronic properties of armchair graphene nanoribbons defected by hexagonal antidotes and Boron/Nitride atoms

Abstract

The electronic properties of armchair graphene nanoribbons (AGNRs) is changed by using different modulation methods. In this paper, the electronic properties of defected AGNRs is studied. The defected AGNRs are introduced by imposing hexagonal topologies of antidotes and Boron/Nitride doping in the middle of pristine nanoribbons which leads to antidote and doped super-lattice of AGNRs (ASL-AGNRs and DSL-AGNRs). It can be realized that the quantum confinement of nanoribbons is quite changed by the presence of defects. This new quantum confinement leads to the new electronic properties. In addition, the electronic properties of nanoribbons are investigated by scaling dimensional parameters such as the width of ribbons (d w ) and the distance between two adjacent antidotes (d l ). Finally, one can extracted that the electronic properties of armchair graphene nanoribbons can be tuned by changing dimensional parameters. Numerical tight-binding model, coupled with the non-equilibrium Green's function formalism are applied to extract the electronic properties of ribbons.