Performance Analysis of New Dual-Pocket Tunnel-FET-based Biosensor

A new dual pocket tunnel field effect transistor (DP- TFET) structure has been proposed for dielectrically modulated biosensing application. Full-length pocket-tunnel field effect transistor (Poc-TFET) model and some existing TFET of similar dimensions have been taken as a reference during analysis. This paper explores the efficiency of Dual Pocket tunnel field effect transistor (DP-TFET) with respect to full length pocket tunnel field effect transistor (Poc- TFET) and tunnel field effect transistor without pocket. The sensing action has been carried out for the pair of charged and charge free biomolecules using ATLAS device simulator. Sensitivity also has been examined by changing pocket thickness T
pocket
, pocket length L
pocket
, work function of gate metal, and dielectric material.