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- 2024Tailoring the Surface Properties of ZnO Nanowires by ALD Deposition
- 2016Reduced graphene oxide/ZnO nanocomposite for application in chemical gas sensorscitations
- 2013Metal oxide nanowire chemical and biochemical sensorscitations
- 2012Pt doping triggers growth of TiO2 nanorods: nanocomposite synthesis and gas-sensing propertiescitations
- 2012Gas sensing characteristics of Fe-doped tungsten oxide thin filmscitations
- 2012Gas sensing characteristics of Fe-doped tungsten oxide thin filmscitations
- 2011Sensing properties of e-beam evaporated nanostructured pure and iron-doped tungsten oxide thin filmscitations
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article
Sensing properties of e-beam evaporated nanostructured pure and iron-doped tungsten oxide thin films
Abstract
Gas sensing properties of nanostructured pure and iron-doped WO3 thin films are discussed. Electron beam evaporation technique has been used to obtain nanostructured thin films of WO3 and WO3:Fe with small grain size and porosity. Atomic force microscopy has been employed to study the microstructure. High sensitivity of both films towards NO2 is observed. Doping of the tungsten oxide film with Fe decreased the material resistance by a factor of about 30 when exposed to 5 ppm NO2. The high sensitivity is attributed to an improved microstructure of the films obtained through e-beam evaporation technique, and subsequent annealing at 300oC for 1 hour.