Performance Investigation on Gate Stack Dual Material Double Gate MOSFET Based Biosensor

This work investigates the label-free detection capabilities of a Gate stack Dual Material Double-Gate MOSFET based biosensor. The biosensor design features a nanocavity specifically engineered for biomolecule adsorption. To assess its sensitivity, we employed TCAD simulations to analyze the device's response to various biomolecules with differing dielectric constants. The results demonstrate a high on-current ratio (Ion/Ioff) indicative of good switching characteristics signifying efficient gate control. Furthermore, the simulations reveal significant current changes upon biomolecule adsorption within the nanocavity, highlighting the biosensor's sensitivity to the target biomolecules. This study paves the way for further exploration junction less DG-DM MOSFET biosensors as a promising tool for label-free bio-detection.