Two dimensional analytical modeling for asymmetric 3T and 4T double gate tunnel FET in sub-threshold region: Potential and electric field
In this paper a two dimensional analytical model of channel potential and electric field for an asymmetric and symmetric double gate three-terminal (3T) and four-terminal (4T) silicon n-tunnel field effect transistor (Si-nTFET) device in sub-threshold region, without surface accumulation or inversion, is presented. Since the modeling has been done in subthreshlod regime operation, no Quantum Mechanical (QM) study has been taken. A very good agreement of analytically modeled results with the TCAD simulated results for the three-terminal (3T) and four-terminal (4T) Si-nTFET device was found. The model presented is based on the physics of the device. The modeling is for a 3T/4T asymmetric Tunnel FET and with appropriate changes in the device parameters we can also model for symmetric devices as well. The modeling scheme is thus quite robust.
analytical models electric field tunnel field-effect-transistor (tfet) surface potential asymmetric tfet sub-threshold modeling electric potential 3t tfet 4t tfet