Enhancing Biosensor Sensitivity Using Dielectrically Modulated Triple-Gate Heterojunction Tunnel FET

In the ever-evolving landscape of healthcare, early detection of health issues is crucial. Biosensors offer a promising solution, integrating biological recognition elements with electronic signal transduction. Among them, Field-Effect Transistor (FET)-based biosensors stand out for their label-free detection method and potential for non-invasive biopsies. Dielectric modulation in FETs facilitates biomolecule detection by altering electrical properties. We present a study comparing Double Gate Dielectrically Modulated Tunnel Field Effect Transistor (DG-DM-TFET) with Triple Gate Heterojunction Dielectrically Modulated TFET (TG-HJ-DM-TFET). The latter exhibits significantly improved sensitivity, essential for biosensing applications. Our work explores structural modifications and material choices to enhance sensitivity, demonstrating a five-fold increase in sensitivity compared to conventional TFETs.