Computer analysis of the sensory properties of nanostructured SnO2 films. 2. The percolation approach to development of gas-sustainable sensors
L.V. Redel, S.L. Gafner
N.F. Katanov Khakas State University
Abstract: We propose a model of a gas sensor developed on the basis of the nanocrystalline layers of SnO2. The basis of the model is the account of the real morphology of SnO2 nanolayers, and that some of the constituent nanoparticles may be in the non-conducting state even when the interaction with the reagent gas. It is shown that this probability determined by the diameter of nanoparticles and degree of their connection during sintering of nanocrystalline powder. It is expected that the inclusion of percolation effects can significantly increase the sensitivity of gas sensors based on SnO2 nanofilms. The percolation threshold corresponding to the critical concentration of gas to be detected can be controlled by means of the average particle size used and by degree of porosity of the film.
Keywords: semiconductor, computer modeling, nanocompacted material, gas sensor.
Redel, L.V. Computer analysis of the sensory properties of nanostructured SnO2 films. 2. The percolation approach to development of gas-sustainable sensors / L.V. Redel, S.L. Gafner // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials: Interuniversity collection of proceedings / Ed. by V.M. Samsonov, N.Yu. Sdobnyakov. – Tver: TSU, 2017. – I. 9. – P. 390-396.
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