Electronic transport properties and first-principles study of γ-graphyne, and γ-BN graphyne monolayers

The electron transport properties of an armchair gamma-graphyne (gamma-yne) nanoribbon and gamma-BN graphyne (gamma-BN-yne) nanoribbon embedded between two armchair gamma-yne nanoribbons are systematically investigated by a tight-binding (TB) model. The parameters of tight biding hopping and on-site energies are obtained by comparing the tight binding band structure of gamma-yne and gamma-BN-yne monolayers with the first-principles calculations. We numerically compute the electronic transport properties in terms of transmission and current-voltage characteristic. It is shown that by increasing the length of gamma-BN-yne nanoribbon transmission through the system decreases. (C) 2017 Elsevier Ltd. All rights reserved.