Journal ArticleDOI
Design and investigation of dielectric modulated triple metal gate-oxide-stack Z-shaped gate horizontal pocket TFET device as a label-free biosensor
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In this article , a dielectric modulated triple metal gate-oxide-stack Z-shaped gate horizontal source pocket tunnel field effect transistor (DM-TMGOS-ZHP-TFET) structure has been investigated for the application of label free-biosensor.Abstract:
In this article, a dielectric modulated triple metal gate-oxide-stack Z-shaped gate horizontal source pocket tunnel field-effect transistor (DM-TMGOS-ZHP-TFET) structure has been investigated for the application of label free-biosensor. This work explores the advantage of gate work function engineering along with the gate-oxide-stack approach for the ZHP-TFET for the first time. An asymmetric nano-cavity is created adjacent to the source-channel junction to immobilize the target biomolecules conjugation to the proposed device. The sensitivity of the device is thoroughly investigated in terms of average subthreshold swing (SS), threshold voltage (V th) and the switching ratio (I on/I off) of the proposed device with the variation of the dielectric constant value inside the nano-gap under the gate electrode. The device characteristics are investigated with different combinations of metal work functions to match the desired feature and sensitivity of the device. In addition, the sensitivity analysis of the proposed device is analyzed in the presence of both positive and negative charged biomolecules in the cavity region to study the charge effect on label-free detection of the device. A comparative study is conducted between a single metal gate (SMG) ZHP-DM-TFET biosensor with the DM-TMGOS-ZHP-TFET biosensor explores the advantage of gate-work function engineering with a gate-oxide-stack approach. Interestingly the DM-TMGOS-ZHP-TFET biosensor shows superior results with a high current ratio sensitivity of 103 which is ten times more than the SMG-ZHP-DM-TFET biosensor and this device also exhibits low subthreshold characteristics.read more
Citations
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Journal ArticleDOI
Design and investigation of InAs source dual metal stacked gate-oxide heterostructure tunnel FET based label-free biosensor
TL;DR: In this paper , a stacked gate oxide (high-k/low-k) approach towards the design of a Dual Metal Stacked Gate oxide Heterostructure Tunnel Field Effect Transistor (DM SGox HTFET) dielectric modulation-based biosensor is presented.
Proceedings ArticleDOI
A Novel Dielectric Modulated Misaligned Double-Gate Junctionless MOSFET as a Label-Free Biosensor
Saurabh Kumar,R. K. Chauhan +1 more
Proceedings ArticleDOI
Electrical Characterization and Sensitivity Analysis of Cavity-based Dielectric Modulated ZnO Nano-structured TFT for Biosensing Applications
TL;DR: In this article , a dielectric-modulated zinc-oxide nano-structured thin-film transistor (DM ZnO TFT) for biosensing applications is proposed.
Journal ArticleDOI
Sensitivity analysis of Horizontal pocket N-TFET based biosensor considering repulsive steric effects
Shreyas Tiwari,Rajesh Saha +1 more
TL;DR: In this paper , the repulsive steric effect (RSE) was considered in the analysis of tunnel field effect transistor (TFET) based label free Biosensor, and the effect of RSE on the capacitance, Drain current, Energy Band Diagram, Surface Potential (ϕ), ION/IOFF ratio, tunneling rate, and ON current sensitivity was measured by changing the position of the biomolecule with respect to source-channel interface.
Proceedings ArticleDOI
Sensitivity Analysis of Dielectrically Modulated Hetero junction InSb/Si SOI-TFET based Biosensor for Cancer Detection.
TL;DR: In this article , the authors proposed an SOI TFET with a dielectric controlled dual material gate for the detection of cancer biomolecules, where the cavity is introduced on the source and drain by an overlapping gate, which gives the cavity a broad area to accommodate and alters the device's electrostatic properties.
References
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Journal ArticleDOI
A dielectric-modulated field-effect transistor for biosensing
TL;DR: It is shown here that a FET biosensor with a vertical gap is sensitive to the specific binding of streptavidin to biotin, and believes that the dielectric-modulated FET (DMFET) provides a useful approach towards biomolecular detection that could be extended to a number of other systems.
Journal ArticleDOI
Proposal for tunnel-field-effect-transistor as ultra-sensitive and label-free biosensors
Deblina Sarkar,Kaustav Banerjee +1 more
TL;DR: In this paper, a tunnel field effect transistor (TFET) based biosensor is proposed, and it is shown that they can surpass by several orders, the performance of those based on conventional FET and hence, can potentially revolutionize the biosensing applications.
Journal ArticleDOI
The development and application of FET-based biosensors.
TL;DR: The pH-sensitive ISFET, which is at present being clinically investigated for intravascular blood pH recording, is discussed, as well as a prediction with respect to future developments of FET-based biosensors.
Journal ArticleDOI
Comparative Analysis of Dielectric-Modulated FET and TFET-Based Biosensor
TL;DR: In this paper, an extensive study is presented to describe the impact of partial hybridization on the device electrostatics and on current of a silicon dielectric-modulated tunnel field effect transistor (DM-TFET).
Journal ArticleDOI
Comparative Performance Analysis of the Dielectrically Modulated Full- Gate and Short-Gate Tunnel FET-Based Biosensors
TL;DR: In this article, a short-gate tunneling-field-effect-transistor (SG-TFET) structure has been investigated for the dielectrically modulated biosensing applications in comparison with a full-gate TFET structure of similar dimensions.