Investigating the Transmission Properties, Energy-Momentum Relationship (E-K diagram), and Current-Voltage (I-V) Characteristics of various atomic configurations within Armchair Graphene Nano Ribbons (AGNR) at different bias voltages using the Non-Equilib

Abstract

In this research, the investigati on has been done on the behavior of armchair graphene nanoribbons (AGNRs) with 7, 9, and 12-atom when they are subjected to 200,300 and 380 millivolts bias voltages by using Non-Equilibrium Green’s Function methodology. The main focus of this research is to study transmission properties, Energy-Momentum (E-K) relationships, and current-voltage (I-V) characteristics. The NEGF method is used to calculate various electronic attributes of AGNRs, including the transmission function, Energy-Momentum (E-K) relationships, and I-V characteristics. Outcomes of this study Explain the interesting factor that with an increasing number of atoms in AGNRs, bandgap decreases. This decrease in bandgap corresponds with an increase in the possibility of transmission in a constrained energy range, which leads to an increase in the device's radius. Because of this, when AGNRs are exposed to a bias voltage, their current flow increases. Additionally, I-V characteristics of AGNRs exhibit nonlinear behavior that becomes stronger as the number of atoms increases and the voltage range increases. Strong electron interactions and the effects of quantum confinement are responsible for this non-linear characteristic. These findings add great significance in advancing the understanding of the electronic properties of AGNRs and offer interesting possibilities for their application in the field of nanoelectronics.