Gas sensor response of pure and activated WO3 nanoparticle films made by advanced reactive gas deposition
2006 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, E-ISSN 1873-3077, Vol. 117, no 1, 128-134 p.Article in journal (Refereed) Published
Pure and activated (doped) nanocrystalline WO3 films, produced by advanced reactive gas deposition, were investigated for gas sensing applications. Activation took place by co-evaporation of Al or Au with tungsten oxide as the particles were produced. Structural characterization of the films was performed by electron microscopy and X-ray diffractometry. Sensitivity, response time, and recovery time of the sensors were systematically investigated as a function of annealing and operating temperature, using H2S, CO, and NO, as test gases. The sensitivity was found to lie below and around the ppm level for H2S and NO2, respectively.
Place, publisher, year, edition, pages
2006. Vol. 117, no 1, 128-134 p.
microstructure, electrical properties, WO3, Au, sensor
Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-91445DOI: 10.1016/j.snb.2005.11.008ISI: 000239255400018OAI: oai:DiVA.org:uu-91445DiVA: diva2:164177