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Thin films made by a mixing of selenium and tin oxides have been obtained by high vacuum thermal evaporation. A detailed optical, electrical and structural characterization has been performed on all deposited films. Electron microscopy observations show that the films consist of nanosized grains of SeO2 and SnO2 homogeneously arranged. The NO gas sensing properties of this material have been tested in controlled atmosphere. In addition, the influence of oxygen in the test gas mixture was analyzed.
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Manno et al. (1998) studied this question.
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