In2O3-based multicomponent metal oxide films and their prospects for thermoelectric applications

• Thermoelectric properties of ITO:(ZnO, Ga2O3) multi-component films are studied.
• Properties depend strongly on the content of nanocomposites.
• Ga2O3 is more effective additive for optimization of the thermoelectric conversion.
• Main changes occur near additive concentration corresponding to the limit solubility.
• The explanation of the observed changes requires more studiesy.

Thermoelectric properties of In2O3–SnO2-based multi-component metal oxide films formed by spray pyrolysis method are studied. It is shown that the introduction of additional components such as gallium and zinc can control the parameters of the deposited layers. At that, the doping with gallium is more effective for optimization of the efficiency of the thermoelectric conversion. The explanation of the observed changes in the electro-physical and thermoelectric properties of the films at the composition change is given. It is found that the main changes in the properties of multicomponent metal oxide films take place at concentrations of dopants which correspond to their limit solubility in the dominant oxide.

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