Functioning features of the gas sensor based on SnO2
Yu.Ya. Gafner, D.A. Ryzhkova
Katanov Khakass State University
DOI: 10.26456/pcascnn/2023.15.814
Original article
Abstract: Every year modern industry increases the number of technological processes using highrisk chemicals. Therefore, for the uninterrupted work of personnel, it is necessary to minimize the possible consequences of leakage of these substances, but for this, first of all, a clear definition of the maximum permissible concentration of a particular hazardous substance in the air is required. In the last decade, nanomaterials of various types have been used as active elements for gas sensors, and gas sensors based on tin oxide have become the most popular among researchers. In this work, typical reactions of the interaction of the surface of a nanocompacted SnO2 layer with some detectable gases were studied. It is shown that with an increase in the concentration of the analyzed gas due to its chemical absorption, the electrons previously captured by oxygen are released, which leads to an increase in the number of nanoparticles in the conducting state. This feature makes it possible to use the nanocompacted SnO2 layer for the determination of nitrogen mono- and nitrogen dioxide in the atmosphere.
Keywords: absorption, semiconductors, nanocompacted material, gas sensors, simulation
- Yury Ya. Gafner – Dr. Sc., Professor, Chief of the Department of Mathematics, Physics and Information Technology, Katanov Khakass State University
- Daria A. Ryzhkova – 3 rd year postgraduate student, Senior Lecturer of the Department of Mathematics, Physics and Information Technology, Katanov Khakass State University
Reference:
Gafner, Yu.Ya. Functioning features of the gas sensor based on SnO2 / Yu.Ya. Gafner, D.A. Ryzhkova // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2023. — I. 15. — P. 814-822. DOI: 10.26456/pcascnn/2023.15.814. (In Russian).
Full article (in Russian): download PDF file
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