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REVIEW OF TWO DIMENSIONAL ANALYTICAL MODEL OF DUAL MATERIAL GATE TUNNEL FIELD EFFECT TRANSISTOR

Journal: International Journal of Computer Science and Mobile Applications IJCSMA (Vol.2, No. 11)

Publication Date:

Authors : ; ; ;

Page : 143-149

Keywords : Tunnel field effect transistor (TFET); Band to band Tunneling; Analytical model; Poisson Equation; Parabolic approximation; Surface potential;

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Abstract

In this paper, a new two dimensional (2D) analytical model of a Dual Material Gate tunnel field effect transistor (DMG TFET) is presented. The parabolic approximation technique is used to solve the 2-D Poisson equation with suitable boundary conditions. The simple and accurate analytical expressions for surface potential and electric field are derived. The electric field distribution can be used to calculate the tunneling generation rate and numerically extract tunneling current. The results show a significant improvement of on-current and reduction in short channel effects. Effectiveness of the proposed method has been confirmed by comparing the analytical results with the TCAD simulation results.

Last modified: 2014-11-29 15:12:01