Abstract:
We considered the effect of coverage of the surface of In2O3 films with rhodium on the
sensitivity of their electrophysical properties to ozone (1 ppm). The surface coverage with rhodium
varied in the range of 0–0.1 ML. The In2O3 films deposited by spray pyrolysis had a thickness
of 40–50 nm. The sensor response to ozone depends on the degree of rhodium coverage. This
dependence has a pronounced maximum at a coverage of ~0.01 ML of Rh. An explanation is given
for this effect. It is concluded that the observed changes are associated with the transition from the
atomically dispersed state of rhodium to a 3D cluster state.
Description:
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