Low temperature CO sensitive nanostructured WO3 thin films doped with Fe

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dc.contributor.authorAhsan, Men_AU
dc.contributor.authorTesfamichael, Ten_AU
dc.contributor.authorIonescu, Men_AU
dc.contributor.authorBell, Jen_AU
dc.contributor.authorMotta, Nen_AU
dc.date.accessioned2014-03-07T00:22:19Zen_AU
dc.date.available2014-03-07T00:22:19Zen_AU
dc.date.issued2012-02-20en_AU
dc.date.statistics2014-03-07en_AU
dc.description.abstractNanostructured tungsten oxide thin film based gas sensors have been developed by thermal evaporation method to detect CO at low operating temperatures. The influence of Fe-doping and annealing heat treatment on microstructural and gas sensing properties of these films have been investigated. Fe was incorporated in WO3 film by co-evaporation and annealing was performed at 400 degrees C for 2 h in air. AFM analysis revealed a grain size of about 10-15 nm in all the films. GIXRD analysis showed that as-deposited films are amorphous and annealing at 400 degrees C improved the crystallinity. Raman and XRD analysis indicated that Fe is incorporated in the WO3 matrix as a substitutional impurity, resulting in shorter O-W-O bonds and lattice cell parameters. Doping with Fe contributed significantly toward CO sensing performance of WO3 thin films. A good response to various concentrations (10-1000 ppm) of CO has been achieved with 400 degrees C annealed Fe-doped WO3 film at a low operating temperature of 150 degrees C. © 2012, Elsevier Limiteden_AU
dc.identifier.citationAhsan, M., Tesfamichael, T., lonescu, M., Bell, J., & Motta, N. (2012). Low temperature CO sensitive nanostructured WO3 thin films doped with Fe. Sensors and Actuators B: Chemical, 162(1), 14-21. doi:10.1016/j.snb.2011.11.038en_AU
dc.identifier.govdoc4730en_AU
dc.identifier.issn0925-4005en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleSensors and Actuators B: Chemicalen_AU
dc.identifier.pagination14-21en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.snb.2011.11.038en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5244en_AU
dc.identifier.volume162en_AU
dc.language.isoenen_AU
dc.publisherElsevier Science BVen_AU
dc.subjectTemperature measurementen_AU
dc.subjectNanostructuresen_AU
dc.subjectFilmsen_AU
dc.subjectX-ray detectionen_AU
dc.subjectIronen_AU
dc.subjectX-ray photoelectron spectroscopyen_AU
dc.titleLow temperature CO sensitive nanostructured WO3 thin films doped with Feen_AU
dc.typeJournal Articleen_AU
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