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

Beniwal, A. , Ganguly, P., Gond, R., Rawat, B. and Li, C. (2023) Room temperature operated PEDOT: PSS based flexible and disposable NO2 gas sensor. IEEE Sensors Letters, 7(9), 2001804. (doi: 10.1109/lsens.2023.3308518)

Abstract

This work presents a flexible and disposable nitrogen dioxide (NO 2 ) 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: Articles
• Additional Information: This work is supported by the UK Research and Innovation (UKRI) - Engineering and Physical Sciences Research Council (EPSRC) under UKRI Postdoctoral Fellowships Guarantee scheme for Marie Sklodowska-Curie Actions (MSCA) Postdoctoral Fellowship DETECT (EP/X027791/1). This work is also supported with SERB Start-up Grant (SRG/2020/0007111), Department of Science and Technology, India.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Ganguly, Ms Priyanka and Li, Professor Chong and Beniwal, Dr Ajay
• Authors: Beniwal, A., Ganguly, P., Gond, R., Rawat, B., and Li, C.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: IEEE Sensors Letters
• Publisher: Institute of Electrical and Electronics Engineers
• ISSN: 2475-1472
• Published Online: 25 August 2023
• Copyright Holders: Copyright: © 2023 IEEE
• First Published: First published in IEEE Sensors Letters 7(9): 2001804
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
316653		DETECT	Chong Li	EPSRC EU Guarantee (EPSRCEU)	EP/X027791/1	ENG - Electronics & Nanoscale Engineering