Single crystalline films (SCFs) of undoped and Ce 3+ -doped YAlO 3 (YAP) perovskite were crystallized by liquid-phase epitaxy method onto YAP substrates for the first time from the novel lead-free BaO-B 2 O 3 -BaF 2 fluxes. The absorption, luminescence, and scintillation properties of these films are measured and compared with the films grown from the standard PbO-B 2 O 3 flux. It appears that the films obtained from the BaObased flux exhibit better luminescent and scintillation properties with respect to films grown from the PbO-based one.
The effect of oxidation at room temperature on the thermoelectric properties of PbSe/KCl (001) thin films prepared by thermal evaporation was investigated. The dependences of the electrical conductivity, the Hall coefficient, charge carrier mobility, and thermopower on the PbSe layer thickness (d ϭ 4-200 nm) were obtained. An inversion of the sign of the dominant carriers from n to p at d ϳ 80 nm was observed under decreasing d. The d dependences of the thermoelectric properties were interpreted, taking into consideration the oxidation processes at the film/air interface within the framework of models considering both n-type and p-type carriers.
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