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Sb and In doped SnO 2 powders and single crystals were prepared. The kinetics and thermodynamics of segregation processes of doping elements in dependence on annealing temperature was investigated by X-ray photoelectron spectroscopy (XPS). For 24 h annealing time of SnO 2 single crystals the thermodynamic equilibrium is already reached for Sb above 850 o C and for In at 1000...
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