Abstract
Carbon Nanotube Field Effect Transistors (CNTFET) are promising nano-scaled devices for implementing high performance, very dense and low power circuits. The core of a CNTFET is a carbon nanotube. Its conductance property is determined by the chirality of the tube. In this paper, the current-voltage characteristics of coaxial type CNTFET is studied by quantum simulations using the non-equilibrium Green's function formalism with the self-consistent born approximation. The simulation shows that the current-voltage characteristics of CNTFET vary depends on the chirality and thickness of the oxide layer. This analysis is applicable to primitive and complex digital and analog circuit design based on CNTFETs. The CNTFET simulation is carried out using Nanohub.org, which is an online based java platform engine.
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