Abstract
The adsorption of ammonia, carbon monoxide, and oxygen on solid solution and binary compound films of the GaSb-ZnTe system was studied. The mechanism of adsorption and rules governing adsorption processes depending on adsorption conditions and system composition were determined by analyzing adsorption isobars, equilibrium and kinetic isotherms, the thermodynamic and kinetic characteristics of adsorption, and the electronic nature of adsorbate molecules. The behavior of (GaSb)x(ZnTe)1−x solid solutions was similar to that of binary compounds (GaSb and ZnTe) and had special features characteristic of multicomponent systems. The latter manifested themselves by the presence of extrema in adsorption characteristic-composition diagrams. The use of such diagrams allowed us to identify system components most active with respect to NH3, CO, and O2 and use them to create high-sensitivity and selectivity sensors.
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