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 SM ISO690:2012BRYNZARI, Vladimir, KOROTCHENKOV, Ghenadii, SCHWANK, Johannes W., BORIS, Y.. Chemisorptional approach to kinetic analysis of SnO2:Pd-based thin film gas sensors. In: Journal of Optoelectronics and Advanced Materials, 2002, vol. 4, pp. 147-150. ISSN 1454-4164. |
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  Journal of Optoelectronics and Advanced Materials |
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| Volumul 4 / 2002 / ISSN 1454-4164 | ||||||
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| Pag. 147-150 | ||||||
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The chemisorptional approach to conductivity kinetics of thin film SnO 2:Pd gas sensors is presented. The base of this model is the experimental study and theoretical simulation of gas sensitive characteristics. The main idea of the proposed approach is the existence of neutral atomic form of chemisorbed oxygen on the SnO2 surface due to oxygen spillover from Pd metal particles. This form competes with molecular oxygen for absorption sites. Finally, the kinetic process is determined by the rate of absorption/desorption reactions of molecular oxygen. |
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| Cuvinte-cheie Chemisorption, kinetics, Oxygen spillover, sensitivity, SnO2, Surface doping |
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