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Influence of additives on the morphological, phase and chemical characteristics of gas sensitive SnO2 sprayed films

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Abstract

The morphology, and also the chemical and phase composition of sprayed SnO2 films doped with Cu, Zr, Fe and P have been investigated. It was found that in general, the film morphology was characterized by a fine grained basic layer with a few large crystallites located on the surface. All the doping elements decreased the grain size in the basic layer. For Fe, Zr and P the grain size depended on the doping level in the spray solution. It was established that the dopant: Sn ratio in the films was much lower than that in the spray solution. The doping element was preferentially accomodated in the large crystallites with only a small quantity of the dopant being introduced into the basic layer. The gas sensing properties of the films have are discussed on the basis of these results.

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Authors and Affiliations

  1. BAS, Institute of General and Inorganic Chemistry, Acad. G. Bonchev Blvd., Bl. 11, 1113, Sofia, Bulgaria

    I. Stambolova & K. Konstantinov

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  1. I. Stambolova
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  2. K. Konstantinov
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Stambolova, I., Konstantinov, K. Influence of additives on the morphological, phase and chemical characteristics of gas sensitive SnO2 sprayed films. JOURNAL OF MATERIALS SCIENCE 31, 6207–6213 (1996). https://doi.org/10.1007/BF00354440

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  • DOI: https://doi.org/10.1007/BF00354440

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