Analytical modeling of dielectrically modulated broken-gate tunnel FET biosensor considering partial hybridization effect

Chowdhury, Joy; Sarkar, Angsuman; Mahapatra, Kamalakanta; Das, Jitendra Kumar

doi:10.1016/j.compeleceng.2022.107859

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…Impact of varying the fill-in factor of the cavity region.-A parameter denoted as "f," which represents the fill-in factor in percentage, has been introduced to model the alteration in the cavity capacitance effectively. 39 To explore varying scenarios of cavity filling or fill-in factor with Keratin (κ = 8) biomolecules, Figs. 5a -5d (illustrates four distinct positions of biomolecules within the cavity.…”

Section: Resultsmentioning

confidence: 99%

Tweaking the Performance of Dielectric Modulated Junctionless Double Gate Metal Oxide Field Effect Transistor-Based Label-Free Biosensor

Kumar,

Chauhan

2024

J. Electrochem. Soc.

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IWe have explored the characteristics of a dielectric-modulated, junctionless (JL) double gate (DG) metal oxide field-effect transistor (MOSFET) featuring a misaligned cavity. Our investigation primarily revolves around proposing optimized device dimensions by examining the influence of varying the height and length of the cavity on the device's sensitivity. We have delved into the variation of sensitivity parameters, including threshold voltage, ON current, ON-OFF current ratio, and transconductance. Furthermore, our research delves into the effects of both charged and neutral biomolecules on the DC characteristics of the proposed biosensor. We have scrutinized the placement and fill-factor variations of biomolecules within the cavity region, elucidating their impact on sensitivity. Notably, we observed that a 100% filled cavity yields the highest sensitivity. Additionally, this work encompasses a comprehensive exploration of the practical biosensing mechanism tailored for detecting Streptavidin. Based on the ON-OFF current ratio, a maximum selectivity factor of 2.38 (biotarget over bioreceptor) has been observed. Our extensive simulations, conducted using SILVACO ATLAS, rigorously investigate the effects we describe. Altogether, this study highlights the potential of misaligned-cavity JL-DG-MOSFET-based label-free biosensors as cost-effective and simplified analytical tools for biomolecule detection.

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Section: Resultsmentioning

confidence: 99%

Tweaking the Performance of Dielectric Modulated Junctionless Double Gate Metal Oxide Field Effect Transistor-Based Label-Free Biosensor

Kumar,

Chauhan

2024

J. Electrochem. Soc.

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“…The partial hybridization of biomolecules inside the nanocavity is a serious obstacle for sensing performance of the biodevices. 17,18 It has been shown that a part of the inserted biomolecules is attached to the immobile probes inside the nanocavity due to the hindrance induced by the biomolecules. The partial hybridization known as fillfactor percent is defined as the ratio of the hybridized biomolecule length to the nanocavity length as shown in the inset of Fig.…”

Section: Reliability Evaluation Of the Biodevicesmentioning

confidence: 99%

A Highly Reliable Nanoscale Biodevice Benefitting from the Charge Plasma Concept – Si and InAs Source

Anvarifard

2023

ECS J. Solid State Sci. Technol.

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A nanoscale biodevice based on the tunneling field effect transistor (TFET) has been reported for the detection of target biomolecules. Two kinds of materials in the cases of silicon and InAs have been incorporated inside the source region for the sensitivity performance comparison. In order to prevent the diffusion of the impurities in the nanoscale biodevice during thermal processing, the entire structure has been doped at a N-type doped level forming a junctionless device. The approach that we have uses the charge plasma to convert the N-type source into the P-type source resulting in the creation of the TFET device. Indeed, the entire plasma appears inside the source by the auxiliary plasma gate electrodes. The obtained results performed by the SILVACO simulator show the improvement of the sensitivity of the proposed biodevice while keeping the reliability high. Also, the fill-factor impact and trap-assisted-tunneling effects on sensing performance are monitored for the biodevices under the study and the interesting results are presented.

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Charge Plasma TFET-Based Label-Free Biosensor for Healthcare Application

Dewan,

Chaudhary,

Yadav

2024

Handbook of Emerging Materials for Semiconductor Industry

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Analytical modeling of dielectrically modulated broken-gate tunnel FET biosensor considering partial hybridization effect

Cited by 7 publications

References 24 publications

Tweaking the Performance of Dielectric Modulated Junctionless Double Gate Metal Oxide Field Effect Transistor-Based Label-Free Biosensor

Tweaking the Performance of Dielectric Modulated Junctionless Double Gate Metal Oxide Field Effect Transistor-Based Label-Free Biosensor

A Highly Reliable Nanoscale Biodevice Benefitting from the Charge Plasma Concept – Si and InAs Source

Charge Plasma TFET-Based Label-Free Biosensor for Healthcare Application

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