Kunchakara, Suhasini and Ratan, Amar and Dutt, Meenakshi and Shah, Jyoti and Kotnala, R. K. and Singh, Vaishali (2020) Impedimetric humidity sensing studies of Ag doped MCM-41 mesoporous silica coated on silver sputtered interdigitated electrodes. Journal of Physics and Chemistry of Solids, 145. pp. 109531-109538. ISSN 0022-3697

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Abstract

Silver nitrate of desired concentration was doped in the as-synthesized MCM-41 mesoporous silica and the prepared samples are spin coated onto interdigitated thin films with silver on glass slide. The interdigitated thin film electrodes made of silver were fabricated by RF-magnetron sputtering with power of 60 W at 7.2 x 10(-2) mbar. The synthesized samples were characterized for structural and morphological features using FourierTransform Infrared Spectroscopy (FTIR), BET studies and Transmission Electron Microscopy (TEM). Effect of change in the impedimetric analysis for humidity across the interface has been explored. The impedance of Ag-MCM-41 sample changed five orders of magnitude across the humidity range 11%-93% RH. The xAg-MCM-41, where x = 0.07 g has been the better sample for humidity sensing at room temperature. The impedance studies indicate that the sensor system Ag-doped MCM-41 spin coated on silver sputtered interdigitated electrodes is an appropriate candidate to fabricate humidity sensors with enhanced sensing performance.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Subjects:	Chemistry Multidisciplinary Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Mr. Yogesh Joshi
Date Deposited:	29 Mar 2022 10:46
Last Modified:	29 Mar 2022 10:46
URI:	http://npl.csircentral.net/id/eprint/4753

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