Ion-Sensitive Tunnel Field-Effect Transistor Based Wearable Sweat Sensor for High-Sensitivity and Wide Dynamic Range pH Sensing

DOI

10.2991/978-94-6239-668-5_41How to use a DOI?

Keywords

ISFET; TFET; pH Sensor; Sensitivity; Dynamic Range; SDG 3

Abstract

Demands of ultra-scaled ion sensitive field effect transistors (ISFETs) with higher current sensitivity and wider dynamic pH range are sky-rocketing as the ISFET devices find their increasing applications in the arena of wearable sweat sensors. In this context, a scaled tunnel FET (TFET) can serve as a very attractive and highly promising FET architecture that can be associated with an ISFET device for superior performance metrics. In this work, a p-i-n tunnel FET (TFET)-based simple ISFET has been implemented and investigated in Cadence simulation framework. Simulation results reveal that the subthermionic subthreshold swing of the TFET can enhance the current sensitivity beyond the maximum theoretical limit, whereas, the ambipolarity of the TFET along with appropriate gate tuning can widen the dynamic range. Therefore, the proposed TFET-based ISFET sensor has excellent promise in the realization of high-density chips with improved performance increasingly demanded by the wearable sweat sensors and hence, can meet the requirements of the sustainable development goal (SDG) 3.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Muhammad Johirul Islam
AU  - Md. Iqbal Bahar Chowdhury
PY  - 2026
DA  - 2026/05/14
TI  - Ion-Sensitive Tunnel Field-Effect Transistor Based Wearable Sweat Sensor for High-Sensitivity and Wide Dynamic Range pH Sensing
BT  - Proceedings of the International Conference on Current Problems in Engineering and Applied Sciences (ICCPEAS 2025)
PB  - Atlantis Press
SP  - 383
EP  - 394
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-668-5_41
DO  - 10.2991/978-94-6239-668-5_41
ID  - Islam2026
ER  -