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Information × Registration Number 0217U000333, 0115U002303 , R & D reports Title New composite and thin-film of thermoelectric materials based multicomponent compounds Ag-Pb-Sb-Te (LAST): technology, properties and use. popup.stage_title Head Horichok Ihor Volodymyrovych, Registration Date 26-01-2017 Organization SHEE "Ргесаграthiаn NаtionаІ Vаsyl Stеfаnік Univetrsity" popup.description2 In the first synthesis was made and by cold pressing (extrusion pressure 1.5-2.0 GPa), followed by annealing on the air (T = (370-570) K) are received prototypes of thermoelectric material system Pb-Sn-Ag-Te, the temperature depending on conductivity, thermoelectric coefficient and thermal conductivity are researched. It is shown that these materials are multiphase and the presence of additional phases which was identified by X-ray diffraction, and that gives a material with low thermal conductivity (0,002 W / (cm K)). In the first, for the method of open evaporation in the vacuum with thermal evaporation charge AgxPbmSb2-xTe2 + m, was determined type of substrates (fresh chips (0001) mica-muscovite, Sital) and technological conditions (temperature of evaporation Te = 970 K, deposition temperature Tp = ( 500-550) K, deposition time (5-120) c),which are provided in the process of self-formation of nanostructures with predetermined shape, orientation of crystals and their surface density. The influence of the thickness of thin films based on compounds PbAgxSbTe PbSnAgTe to their thermoelectric properties is researched. As part of a two-layer model Petrits was defined electrical parameters of the surface layers. The results are interpreted process of oxygen adsorption on the surface and its diffusion into the interior of condensate. It was established that the dominant role played the carrier scattering on the surface, not on intergrain boundaries of nanocrystals whose size are increased with the thickness of the vapor-phase structures. Product Description popup.authors Возняк Орест Михайлович Гургула Галина Ярославівна Дундза Богдан Степанович Костюк Оксана Богланівна Маковишин Володимир Іванович Межиловська Любов Йосипівна Паращук Тарас Олегович Прокопів Володимир Васильович Соколов Олександр Пеонідович Яворський Ярослав Святославович popup.nrat_date 2020-04-02 Close