Abstract

Tunnel field effect transistor (TFET) based biosensors are becoming prominent as a good electronic device for label-free biomolecules detection. This paper presents a review of different structures of the TFET based biosensors. The basic idea behind the concept of label-free detection of biomolecules is the conversion of biological events to the electrical signals. These biological events include the biomolecules, which can be detected by two approaches, namely gating effect and dielectric modulation. Biomolecules are categorized as charged and neutral biomolecules. For the detection of these charged/neutral biomolecules various biosensor structures based on TFET have been adopted. Therefore, this paper provides a brief summary on different TFET based biosensors for label-free detection of biomolecules. This paper also shows that TFETs are found as the promising candidate for biosensor application.

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