High-Performance Dielectric Modulated Epitaxial Tunnel Layer Tunnel FET for Label-Free Detection of Biomolecules

High-Performance Dielectric Modulated Epitaxial Tunnel Layer Tunnel FET for Label-Free Detection of Biomolecules

In this paper, using calibrated simulation we have reported a dielectric modulated epitaxial tunnel layer TFET (DM ETL-TFET) for the label-free detection of biomolecules. We have shown that due to vertical tunneling direction, the ETL-TFET exhibits <inline-formula><tex-math notation="L...

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Bibliographic Details
Main Authors: Kunal Aggarwal, Avinash Lahgere
Format: Article
Language:English
Published: IEEE 2024-01-01
Series:IEEE Open Journal of Nanotechnology
Subjects:
TFET
epitaxial tunnel layer
dielectric modulated
sensitivity
selectivity
biosensor
Online Access:https://ieeexplore.ieee.org/document/10747756/
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Summary:In this paper, using calibrated simulation we have reported a dielectric modulated epitaxial tunnel layer TFET (DM ETL-TFET) for the label-free detection of biomolecules. We have shown that due to vertical tunneling direction, the ETL-TFET exhibits <inline-formula><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula>3 orders of improvement in the ON-state current in comparison to its counterpart conventional TFET. In addition, the proposed DM ETL-TFET biosensor shows <inline-formula><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula>4 orders, and <inline-formula><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula>1 order higher ON-state current sensitivity than the past reported core-shell junctionless NT-TFET, and DM NT-TFET biosensors, respectively. Moreover, in comparison to the lateral DM TFET, the proposed DM ETL-TFET shows <inline-formula><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula>310 mV higher threshold voltage sensitivity. Also, the subthreshold swing sensitivity of the proposed biosensor is found to be <inline-formula><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula>0.63 for the keratin biomolecule. Although the proposed biosensor shows almost the same selectivity, the proposed DM ETL-TFET biosensor does not need a complex fabrication process flow, hence, reducing the fabrication cost. Our findings that the proposed biosensor is a lucrative alternative to the FET-based biosensors.
ISSN:2644-1292

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