Design and Performance Analysis of Z-Shaped Charge Plasma TFET-based label-free Biosensor

Performance analysis of a doping-less Z-shaped charge plasma tunnel field effect transistor-based (CP-TFET) label-free biosensor is done with misaligned cavity region on the source and channel. The biosensor device is designed using charge plasma technology. We use suitable metal work function to create source, channel, and drain regions. This device is used for label-free electrical identification of biomolecules such as, uricase (k=1.54), streptavidin (k=2.1), biotin (k=2.63), 3-aminopropyltriethoxysilane (APTES) (k=3.57), keratin (k=8), and gelatin (k=12). The results shows better sensitivity in terms of I
_ON
, I
_OFF
, sub-threshold swing (SS), ION/IOFF ratio as compared to FET-based biosensors. All simulations have been performed in the Silvaco ATLAS 2D device simulator.