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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/725

Title: High ethanol sensitivity in sol–gel derived SnO2 thin films
Authors: Varghese, Oomman K
Malhotra, L K
Sharma, G L
Keywords: Sensitivity
Sol–gel
Ethanol
Nano-crystallites
Issue Date: 1999
Citation: Sensors and Actuators B: Chemical, 55(2-3), 161–165
Abstract: The SnO2 films deposited from inorganic precursors via sol–gel dip coating method have been found to be highly sensitive to ethanol vapor. An average sensitivity as high as ca. 240 obtained in the films, has been attributed to their nano-crystalline nature as revealed by Glancing angle X-ray diffraction (GAXRD) and Atomic force microscope (AFM). The sensitivity was linear in the low concentration range. The films showed fast response and recovery times. The dependence of grain size of the films on the nature of the substrate and the associated effect on sensitivity has been investigated.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/725
Appears in Collections:Physics

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