Room temperature operated PEDOT: PSS based flexible and disposable NO2 gas sensor

Beniwal, Ajay, Ganguly, Priyanka, Gond, Rahul, Rawat, Brajesh and Li, Chong (2023) Room temperature operated PEDOT: PSS based flexible and disposable NO2 gas sensor. IEEE Sensors Letters, 7 (9). pp. 1-4. ISSN 2475-1472

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Abstract / Description

This work presents a flexible and disposable nitrogen dioxide (NO2) gas sensor based on Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), operating at room temperature (RT). The gas sensing layer, composed of PEDOT:PSS, is deposited on interdigitated electrodes (IDEs) made from graphene–carbon ink, which are screen printed onto a paper substrate using the drop casting method. The Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) analyses are carried out to understand the successful deposition and surface morphology analysis of the sensing layer. The NO 2 sensing properties are explored in the range 0.5–50 ppm at RT (27 °C ± 2 °C). The sensor displays significant % response viz., 0.79%–12.97% in the measured range 0.5–50 ppm. Other important sensing characteristics, such as response and recovery times (210 s / 60 s at 0.5 ppm), repeatability, and reproducibility along with sensing mechanism are also presented. The findings of this letter suggest that the developed sensor holds promise for various application areas.

Item Type:	Article
Additional Information:	Copyright © 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords:	sensor materials; disposable and flexible NO2 sensor; eco-friendly; flexible electronics; gas sensing; Poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS)
Subjects:	500 Natural Sciences and Mathematics > 540 Chemistry & allied sciences
Department:	School of Human Sciences
SWORD Depositor:	Pub Router
Depositing User:	Pub Router
Date Deposited:	18 Sep 2023 14:03
Last Modified:	19 Sep 2023 14:48
URI:	https://repository.londonmet.ac.uk/id/eprint/8773

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