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Information × Registration Number 0212U008255, 0111U001766 , R & D reports Title Thermoelectric materials based on nanoscale structures of compounds IV-VI popup.stage_title Head Freik Dmytro Myhaylovych, Registration Date 07-12-2012 Organization Vasil Stefanyk Precarpathian University popup.description2 By the modeling methods of surface condensates in the region of atomic force microscopy and cellular automata it was executed the analysis of topology of the vapor-phase thin films and nanostructures of lead telluride. The proposed geometric model of relief creating in axiomatic look gives the possibility to describe all the stages of formation of nanostructures and their self-organization, depending on growth conditions and physical parameters of these systems. There was first established, that the processes of growth of nanostructures of lead telluride on monocrystalline substrates PbTe/(0001) mica, PbTe/(111)BaF2 have an activated character and kinetics of their formation exponentially dependents on time of vapor deposition on substrates, which in turn is the exponent of its temperature. It was defined the spatial forms of nanocrystals, their mutual orientation and orientation relatively to the substrates in heterostructures. It is shown that at the investigated values of technological factors in all the cases it is realized Folmer-Weber mechanism taking into account the orientation and energy impacts. It is shown that if in the thickness (d)-dependence of the electrical conductivity, Seebeck coefficient and thermoelectric power of thin PbTe films (micron thickness) there have place the classic dimensional effects associated with diffuse scattering of carriers on the surface and grain boundaries, then in nanostructures based on lead telluride (nanometer thickness) - oscillation due to quantization of the energy spectrum of charge carriers in quantum wells formed by barriers at the boundaries of the substrate and surface structures. Product Description popup.authors Возняк Орест Михайлович Горічок Ігор Володимирович Гургула Галина Ярославівна Дундза Богдан Степанович Зенюк Лілія Анатолієвна Ліщинський Ігор Мирославович Межиловська Любов Йосипівна Прокопів Володимир Васильович Соколов Олександр Пеонідович Яворський Ярослав Святославович popup.nrat_date 2020-04-02 Close