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We build up the electrostatic model for Triple Material Quadruple Gate (TMQG) Tunnel Field Effect Transistor of rectangular cross area, in view of semi 3D strategy in this paper. The Parabolic approximation method is utilized to tackle the 2-D Poisson condition with appropriate device boundary conditions and logical articulations for surface potential and electric fields are determined. The electric field dispersion is additionally used to ascertain the tunneling generation rate. The created show furnishes the plan rules of TMQG with enhanced IONcurrent. The diagnostic outcomes are contrasted and TCAD recreation comes about.