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Title: | Room Temperature Operated PEDOT: PSS Based Flexible and Disposable NO2 Gas Sensor |
Authors: | Beniwal, A Ganguly, P Gond, R Rawat, B Li, C |
Keywords: | Sensor phenomena and characterization Gas detectors Temperature sensors Chemical sensors Time factors Surface morphology Substrates |
Issue Date: | 11-Jun-2024 |
Abstract: | 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. |
URI: | http://dspace.iitrpr.ac.in:8080/xmlui/handle/123456789/4597 |
Appears in Collections: | Year-2023 |
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