Fabrication of SnO2 doped TiO2 Metal Oxide Sensor with Ppy layer to sense CO2 Gas

B.H. Bhatti¹ , K.B. Raulkar² , G. T. Lamdhade³

Section:Research Paper, Product Type: Journal-Paper
Vol.11 , Issue.5 , pp.31-36, Oct-2023

Online published on Oct 31, 2023

Copyright © B.H. Bhatti, K.B. Raulkar, G. T. Lamdhade . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
— In this study, an optically flat glass plate was used in the development of a thick film sensor that was based on an Al2O3 substrate that was finer and more porous. The XRD pattern for the B3 sensor seems to point towards a rather tiny crystalline size.. SEM analysis was used to identify the B3 sensor`s increased porosity. As the CO2 gas concentration rises, the sensor resistance reduces at room temperature, enhancing sensitivity because surface oxygen vacancies on TiO2 and SnO2 function as donors. The sensor on an 80SnO2:20TiO2 composition with PPy as the roofing layer showed the maximum sensitivity among the constructed sensors, 0.5912 at 250 ppm, whereas it is less for other compositions.

Key-Words / Index Term :
SnO2, TiO2, Al2O3, Sensitivity, Thick Film, Nanocomposites

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