Comparative Study of Single and Double Barrier GaAs/Al0.3Ga0.7As Based Resonant Tunneling Diodes Considering NEGF

Abstract

Growth of pepped up determining demand of final consumers always forces devices and circuits to increase power and speed., only resonant tunneling diode can solve this problem and can be able to take a vital role in many nanoscale applications. This research paper demonstrates the simulations of the Resonant Tunneling Diode(RTD) by using Hartree Model for the single barrier (1B) and the double barrier (2B) Resonant Tunneling Diodes by the using of NEMO5 considering NEGF. In addition, switching applications also require Large Peak to Valley Voltage Ratio (PVVR) to reduce energy loss. In this article, it is been clearly explained that compared to the Thomas Fermi Model, Hartree Model improves the Peak to Voltage Valley Ratio (PVVR) by 21.21%.The results that are found with the Double Barrier RTD showed much better performance than the Single Barrier RTD. Furthermore, the I-V characteristic verifiedthe notable improvement for Hartree model.