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Article title MODELING OF INFLUENCE OF CHEMISORPTION ON ELECTROPHYSICAL PROPETRIES OF NANOSIZED ZnO FILMS FOR GAS SENSORS
Authors D.I. Cherednichenko, E.G. Zamburg, I.A. Shipulin, D.A. Golosov, S.M. Zavadskiy
Section SECTION II. NANOMATERIALS
Month, Year 09, 2014 @en
Index UDC 539.216.2
DOI
Abstract This work includes results of theoretical research influence chemisorptions CO, CO2, NO2, CH4 и H2 on electrical properties of nanoscale ZnO films to design the gas sensors and multisensor system. The dependences of the film thickness on temperature and gas concentration in condition of fuller charge carrier depletion with accounting mono moleculation filling is surface adsorbs gas with utilization isotherm Langmuir are obtained. The dependence of the electro conduction nanoscale ZnO films on film temperature and gas concentration based on Shaffer model with accounting processes of recombination of charge carrier on charged and neutral impurity. Change evaluation of charge carrier concentration with present of gases and determination direction and reverse reaction of rate constant of collision percussion theory, allow to take the dependence of gas sensitivity nanoscale ZnO films on film temperature and gas concentration. The parameters of nanoscale ZnO films for selective detection of gases are defined.

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Keywords Chemisorption; getcustomername; nanosizedfilm; ZnO.
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