Dielectric-Modulated TFETs as Label-Free Biosensors

  • Goswami R
  • Bhowmick B
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Abstract

This chapter presents tunnel field effect transistors (TFETs) as dielectric-modulated (DM) label-free biosensors, and discusses various aspects related to them. A brief sur- vey of the dielectric-modulated TFET biosensors is presented. The concept of dielec- tric modulation in TFETs is discussed with focus on principle and design perspectives. A Technology Computer Aided Design (TCAD) based approach to incorporate embed- ded nanogaps in TFET geometries along with appropriate physics-based simulation models are mentioned. Non-ideal conditions in dielectric-modulated biosensors are brought to light, keeping in view the practical considerations of the devices. A gate engi- neered TFET is taken up for analysis of sensitivities under different conditions through TCAD simulations. Finally, a status map of the sensitivities of the most significant works in dielectric-modulated label-free biosensors is depicted, and the status of the proposed TFET is highlighted.

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Goswami, R., & Bhowmick, B. (2018). Dielectric-Modulated TFETs as Label-Free Biosensors. In Design, Simulation and Construction of Field Effect Transistors. InTech. https://doi.org/10.5772/intechopen.76000

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