Chakraborty, S and Sen, Amarnath and Maiti, Himadri Sekhar (2006) Complex plane impedance plot as a figure of merit for tin dioxide-based methane sensors. Sensors and Actuators B: Chemical, 119 (2). 431-434 . ISSN 0925-4005

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Thick film methane sensors have been fabricated from nanosized tin dioxide powder containing antimony oxide and palladium. The powder has been prepared by sonication-assisted simultaneous precipitation and the sensors made with this powder showed optimum resistance for device applications and good sensitivity towards methane. This contrasts with the thick film sensors prepared with the powder synthesized without sonication, which showed very high resistance at the operating temperature. The complex plane impedance spectroscopy of the sensors (both in air and in the presence of gas) can be a good indicator of the sensor quality. It has been observed that the nature of the complex plane impedance plot of the sensors fabricated by using powders synthesized through sonication-assisted simultaneous precipitation matches well with that of high-quality imported Figaro (Japan) sensors.

Item Type: Article
Uncontrolled Keywords: Gas sensor; Impedance spectroscopy; Methane; Tin dioxide
Subjects: Basic Science
Depositing User: Mrs Chandana Patra
Date Deposited: 27 Dec 2011 07:57
Last Modified: 15 May 2016 13:17

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