Abstract
The analysis of the influence of deposition modes on the structure, electrical and gas sensitivity characteristics of SnO 2 films, deposited by spray pyrolysis, is presented in this report. X-ray diffraction (XRD), scanning electron microscopy (SEM) and laser ellipsometry were used for this purpose. It was determined that nano-size polycrystalline SnO 2 films with thickness >30 nm can have different structure in dependence on pyrolysis temperature and film thickness. Ultra-thin SnO 2 films with thickness d<20 nm are discontinuous. The relation between structure of the films and gas sensitivity properties is discussed. The explanation of observed effects was made.
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