Search academic texts

Information × Registration Number 0222U003530, 0119U100062 , R & D reports Title Technology of thin-film thermoelectric micromodules on the basis of multi-component compounds with quantum-dimensional effects popup.stage_title Head Yavorskii Yaroslav S., Кандидат фізико-математичних наук Registration Date 08-04-2022 Organization Vasyl Stefanyk Precarpathian National University popup.description2 The object of the study is quantum-size oscillations of thermoelectric parameters of energy microconverters and technological conditions under which their implementation is possible. Research methods: semiconductor thin films were obtained by open evaporation in vacuum; X-rays and SEM studies of the surface and structure of the obtained films; measurement of thermoelectric parameters on an automated water-cooled device. Results and their novelty. The structural and thermodynamic parameters of materials were calculated using the Hartree-Fock method and density functional theory. The defect subsystem of PbTe:X (X=Cd, Sn, Sb, Ge) crystals has been simulated To obtain thin films, open evaporation in vacuum from pre-synthesized weighed portions of Bi2Te3, n-PbTe, PbTe:Sb (impurity content 1 at.%), Pb16Sn2Ag2Te20 та Pb14Sn4Ag2Te20 on substrates from fresh chips (0001) mica-muscovite and polyamide was used. A unique technique for the deposition of planar micropower thermoelectric modules and masks of a certain configuration with pre-cut through holes has been developed and patented. A technique has been developed for determining the characteristics of thermoelectric power converters based on the study of the frequency dependence of their impedance using specialized hardware and software for impedance spectroscopy of thermoelectric modules. The experimental results of the electrical and thermal characteristics are described using an electrothermal model. A design has been developed and an installation has been automated using water-cooled copper radiators for measuring thermoelectric parameters in a vacuum or nitrogen environment. Keywords: thin film generator, thermoelectric module, lead telluride, solid solution. Product Description popup.authors Dzumedzei Roman Oleksiiovych Kostiuk Oksana B. Naidych Bohdanna P. Yavorskyi Rostyslav S. popup.nrat_date 2022-04-08 Close