参数变化和栅极错位对栅极-氧化物堆叠无结mosfet生物传感应用的协同影响

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2025-08-19 DOI:10.1016/j.aeue.2025.156006

Saurabh Kumar, R.K. Chauhan

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引用次数: 0

摘要

本研究提出了一种新型的介电调制，无结，双门控FET生物传感器，具有栅氧化物堆叠工程和错位门，用于无标记生物分子检测。检测是基于生物分子固定引起的电学性质的变化。通过改变生物分子的介电常数和电荷密度来评估所提出器件的ON电流灵敏度。分析了不同介质和电荷条件下栅极错位对导通电流和百分比导通电流灵敏度的影响。此外，还研究了栅极氧化物材料和空腔高度等附加参数对灵敏度的影响。此外，还讨论了在VDS值为0.5 V和1.5 V时，介电常数变化对不同百分比栅极失调的导通电流的影响。所有模拟和分析均使用ATLAS Technology计算机辅助设计（TCAD）设备模拟器进行，以建立一个全面的设计框架，可以指导未来的实验开发。

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Synergistic impact of parametric variation and gate misalignment on gate-oxide stacked junctionless MOSFETs for biosensing applications

This study proposes a novel dielectrically modulated, junctionless, double-gated FET biosensor featuring gate oxide stack engineering and misaligned gates for label-free biomolecule detection. Detection is based on changes in the electrical properties induced by biomolecule immobilization. The ON current sensitivity of the proposed device is evaluated by varying the dielectric constant and charge density of the biomolecules. The impact of gate misalignment on ON current and percentage ON current sensitivity is analysed for different dielectric and charge conditions. Additional parameters such as gate oxide material and cavity height are also investigated for their influence on sensitivity. Furthermore, the influence of dielectric constant variations on ON current for various percentage gate misalignments at V_DS values of 0.5 V and 1.5 V is also discussed. All simulations and analyses were performed using the ATLAS Technology Computer-Aided Design (TCAD) device simulator to establish a comprehensive design framework that can guide future experimental development.

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来源期刊

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.