Effect of 100 MeV O7+ ions irradiation on ethanol sensing response of nanostructures of ZnO and SnO2

Tin dioxide nanoparticles and zinc oxide nanorods were synthesized chemically and thick film gas sensors on alumina substrates were fabricated of these materials. Morphology and crystallite size of synthesized powders were investigated by TEM. The fabricated sensors were irradiated with 100 MeV O 7+...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2010, Vol.98 (1), p.161-166
Main Authors: Singh, Ravi Chand, Singh, Manmeet Pal, Singh, Onkar, Chandi, Paramdeep Singh, Kumar, Ravi
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Condensed Matter Physics
Machines
Manufacturing
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Surfaces and Interfaces
Thin Films
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Summary:Tin dioxide nanoparticles and zinc oxide nanorods were synthesized chemically and thick film gas sensors on alumina substrates were fabricated of these materials. Morphology and crystallite size of synthesized powders were investigated by TEM. The fabricated sensors were irradiated with 100 MeV O 7+ ions at fluences of 1×10 11 , 1×10 12 and 1×10 13 ions/cm 2 . The X-ray diffraction analysis of the samples before and after ion bombardment was performed for structural characterization. The sensing response to ethanol before and after irradiation was carried out for each fabricated sensor. Investigation revealed that irradiated SnO 2 based sensor’s response and response time increased significantly. Results show that ZnO based sensor exhibit strong resistance to damage caused by ion irradiation which might be due to defects annihilation.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-009-5442-5