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Detection of liquid petroleum gas using mixed nanosized tungsten oxide-based thick-film semiconductor sensor |
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| Authors: | Chaudhari G N Bende A M Bodade A B Patil S S Manorama S V |
| Affiliation: | a Gas Sensor and Thin Films Laboratory, Department of Chemistry, Shri Shivaji Science College, Amravati 444601, Maharashtra, India b Materials Science Laboratory, Indian Institute of Chemical Technology, Hyderabad 500007, Andhra Pradesh, India |
| Abstract: | 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 °C. |
| Keywords: | LPG sensor WO3 In2O3 Sensitivity Response characteristics |
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