Publication detail

Gas sensing properties of nanoparticle indium-doped WO3 thick films

KHATKO, V. LLOBET, E. VILANOVA, X. BREZMES, J. HUBÁLEK, J. MALYSZ, K. CORREIG, X.

Original Title

Gas sensing properties of nanoparticle indium-doped WO3 thick films

English Title

Gas sensing properties of nanoparticle indium-doped WO3 thick films

Type

journal article - other

Language

en

Original Abstract

The gas sensing properties of pure and indium-doped nanoparticle WO3 thick films were studied. Sensors were prepared using commercial WO3 nanopowders and powder mixtures with different concentrations of In (1.5, 3.0 and 5.0 wt.%). The gas sensing properties of the sensors to nitrogen dioxide, carbon monoxide, ammonia and ethanol were investigated. It was observed that the pure nanoparticle WO3 sensing layers began to react with nitrogen oxide at room temperature. These sensors had maximum sensitivity to NO2 at 100 C. The indium-doped WO3-based sensors were selective to NO2 and CO at 200 and 300 C, respectively. A mechanism for such behaviour is discussed.

English abstract

The gas sensing properties of pure and indium-doped nanoparticle WO3 thick films were studied. Sensors were prepared using commercial WO3 nanopowders and powder mixtures with different concentrations of In (1.5, 3.0 and 5.0 wt.%). The gas sensing properties of the sensors to nitrogen dioxide, carbon monoxide, ammonia and ethanol were investigated. It was observed that the pure nanoparticle WO3 sensing layers began to react with nitrogen oxide at room temperature. These sensors had maximum sensitivity to NO2 at 100 C. The indium-doped WO3-based sensors were selective to NO2 and CO at 200 and 300 C, respectively. A mechanism for such behaviour is discussed.

Keywords

Pure and indium-doped tungsten oxide thick film; WO3 gas sensor; Gas sensing properties

RIV year

2005

Released

11.11.2005

Publisher

Elsevier

Pages from

45

Pages to

51

Pages count

7

URL

BibTex


@article{BUT42770,
  author="Jaromír {Hubálek} and Karel {Malysz}",
  title="Gas sensing properties of nanoparticle indium-doped WO3 thick films",
  annote="The gas sensing properties of pure and indium-doped nanoparticle WO3 thick films were studied. Sensors were prepared using commercial WO3 nanopowders and powder mixtures with different concentrations of In (1.5, 3.0 and 5.0 wt.%). The gas sensing properties of the sensors to nitrogen dioxide, carbon monoxide, ammonia and ethanol were investigated. It was observed that the pure nanoparticle WO3 sensing layers began to react with nitrogen oxide at room temperature. These sensors had maximum sensitivity to NO2 at 100 C. The indium-doped WO3-based sensors were selective to NO2 and CO at 200 and 300 C, respectively. A mechanism for such behaviour is discussed.",
  address="Elsevier",
  chapter="42770",
  doi="10.1016/j.snb.2005.06.060",
  institution="Elsevier",
  number="1",
  volume="111-112",
  year="2005",
  month="november",
  pages="45--51",
  publisher="Elsevier",
  type="journal article - other"
}