Journal
TALANTA
Volume 69, Issue 1, Pages 187-191Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2005.09.024
Keywords
LPG sensor; WO3; In2O3; sensitivity; response characteristics
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The thick-film semiconductor sensor for liquid petroleum gas (LPG) detection was fabricated using a mixed WO3-based sensor. We present the characterization of both their structural properties by means of XRD measurements and the electrical characteristics by using gas-sensing properties. The sensing characteristics such as sensitivity, working range, cross-sensitivity and response time were studied by using nanosized WO3-based mixed with different metal oxides (SnO2, TiO2 and In2O3) and doped with noble metals (Au, Pd and Pt). The WO3-based mixed with 5 wt.% In2O3 and 0.5 wt.% Pd showed the higher sensing characteristic at low concentration of LPG sensor at an operating temperature 225 degrees C. (c) 2005 Published by Elsevier B.V.
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