Modeling of quantum capacitance of Graphene Nanoribbons

Abstract

Graphene is a single atomic layer of carbon atoms arranged into a two-dimensional (2D) hexagonal lattice [1,2,3] much like a honeycomb. Graphene Nanoribbons, (GNRs) on the other hand is a single-layer of graphite. It managed to capture wide attention of researchers that it is a new exciting material with remarkable transport properties [3,4,5] such as high mobility [1,3,5] for ballistic transport [1,2], ignoring barriers created by imperfections and they show quantum effects [2] at room temperature. Graphene is considered to be an alternative to Si for the channel of field-effect transistor (FETs) [3]. Eventhough Carbon Nanotube (CNT) possess better electrical properties such as higher carrier mobility compared to Graphene Nanoribbons, GNRs we chose to use GNRs instead of CNT due to the reason that the chirality of CNT is very difficult to control during the fabrication in which the chirality of GNRs is easier to manage [6].