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Simulation and Performance Evaluation of Charge Plasma Based Dual Pocket Biosensor using SiGe-Heterojunction TFET Design

Conventional biosensor designs are often vulnerable to issues like random dopant fluctuations (RDFs) and high thermal budgets due to their design and the device they are based on. The main reason behind such issues is the complexity of maintaining uniform doping levels throughout the device structur...

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Autor principal: Paul, Robi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Netherlands 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9574162/
http://dx.doi.org/10.1007/s12633-022-02154-z
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author Paul, Robi
author_facet Paul, Robi
author_sort Paul, Robi
collection PubMed
description Conventional biosensor designs are often vulnerable to issues like random dopant fluctuations (RDFs) and high thermal budgets due to their design and the device they are based on. The main reason behind such issues is the complexity of maintaining uniform doping levels throughout the device structure. This manuscript investigates a biosensor structure utilizing a dual pocket junctionless SiGe-Heterostructured TFET design to overcome such shortcomings. The implementation of the doping charge plasma technique with the uniform doping of [Formula: see text] along an integrated SiGe-Heterostructure layer has improved the tunneling process while also effectively eliminating issues like random dopant fluctuations (RDF). Again the overall performance also depends on the sensitivity of the sensor design. Increasing the trapping area for biomolecules at the same technological node by increasing the pocket length or by adding a pocket region leads to rapid changes in the sensor’s electric properties owing to shifting dielectric constants (k) and charge densities (in both positive and negative situations), improving in the overall detection process. The influence of these parameters on the device’s Drain current, Surface Potential, Electron Tunneling Rate (ETR), Subthreshold Swing (SS), and I(on)/I(off) ratio is also explored. The introduction of the added pocket region gives us scalability while also showing a higher sensitivity of [Formula: see text] for a dielectric constant being 12 and neutrally charged while rising to nearly [Formula: see text] if the molecules are positively charged. With the improvement in drain current sensitivity due to the additional pocket and junctionless design, this work will undoubtedly give researchers a roadmap for the future generation of highly sensitive biosensor alternatives.
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spelling pubmed-95741622022-10-17 Simulation and Performance Evaluation of Charge Plasma Based Dual Pocket Biosensor using SiGe-Heterojunction TFET Design Paul, Robi Silicon Original Paper Conventional biosensor designs are often vulnerable to issues like random dopant fluctuations (RDFs) and high thermal budgets due to their design and the device they are based on. The main reason behind such issues is the complexity of maintaining uniform doping levels throughout the device structure. This manuscript investigates a biosensor structure utilizing a dual pocket junctionless SiGe-Heterostructured TFET design to overcome such shortcomings. The implementation of the doping charge plasma technique with the uniform doping of [Formula: see text] along an integrated SiGe-Heterostructure layer has improved the tunneling process while also effectively eliminating issues like random dopant fluctuations (RDF). Again the overall performance also depends on the sensitivity of the sensor design. Increasing the trapping area for biomolecules at the same technological node by increasing the pocket length or by adding a pocket region leads to rapid changes in the sensor’s electric properties owing to shifting dielectric constants (k) and charge densities (in both positive and negative situations), improving in the overall detection process. The influence of these parameters on the device’s Drain current, Surface Potential, Electron Tunneling Rate (ETR), Subthreshold Swing (SS), and I(on)/I(off) ratio is also explored. The introduction of the added pocket region gives us scalability while also showing a higher sensitivity of [Formula: see text] for a dielectric constant being 12 and neutrally charged while rising to nearly [Formula: see text] if the molecules are positively charged. With the improvement in drain current sensitivity due to the additional pocket and junctionless design, this work will undoubtedly give researchers a roadmap for the future generation of highly sensitive biosensor alternatives. Springer Netherlands 2022-10-17 2023 /pmc/articles/PMC9574162/ http://dx.doi.org/10.1007/s12633-022-02154-z Text en © The Author(s), under exclusive licence to Springer Nature B.V. 2022, Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.
spellingShingle Original Paper
Paul, Robi
Simulation and Performance Evaluation of Charge Plasma Based Dual Pocket Biosensor using SiGe-Heterojunction TFET Design
title Simulation and Performance Evaluation of Charge Plasma Based Dual Pocket Biosensor using SiGe-Heterojunction TFET Design
title_full Simulation and Performance Evaluation of Charge Plasma Based Dual Pocket Biosensor using SiGe-Heterojunction TFET Design
title_fullStr Simulation and Performance Evaluation of Charge Plasma Based Dual Pocket Biosensor using SiGe-Heterojunction TFET Design
title_full_unstemmed Simulation and Performance Evaluation of Charge Plasma Based Dual Pocket Biosensor using SiGe-Heterojunction TFET Design
title_short Simulation and Performance Evaluation of Charge Plasma Based Dual Pocket Biosensor using SiGe-Heterojunction TFET Design
title_sort simulation and performance evaluation of charge plasma based dual pocket biosensor using sige-heterojunction tfet design
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9574162/
http://dx.doi.org/10.1007/s12633-022-02154-z
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