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Self-sufficient humidity to electricity Innovative Radiant Adsorption System Toward Net Zero Energy Buildings
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The Rectifying Contact of Hydrated Different Size YSZ Nanoparticles for Advanced Electronics
Publication . Doroshkevich, Alexander S.; Zakharova, Anna S.; Oksengendler, Boris L.; Lyubchyk, Andriy I.; Lyubchyk, Sergiy I.; Lyubchyk, Svitlana B.; Tatarinova, Alisa A.; Kirillov, Andriy K.; Vasilenko, Tatyana A.; Gorban, Oksana O.; Bodnarchuk, Viktor I.; Nikiforova, Nadejda N.; Zakharova, Elena A.; Balasoiu, Maria; Mardare, Diana M.; Mita, Carmen; Stanculescu, Anca; Mirzayev, Matlab N.; Nabiyev, Asif A.; Popov, Evgeni P.; Khiem, Le Hong; Donkov, Alexander A.; Teofilović, Vesna; Jasinska, Bozena; Chicea, Dan; Konstantinova, Tatyana Ye; LAQV@REQUIMTE; MDPI AG
The paper considers the new effects of the nanoscale state of matter, which open up prospects for the development of electronic devices using new physical principles. The contacts of chemically homogeneous nanoparticles of yttrium-stabilized zirconium oxide (ZrO2—x mol% Y2O3, x = 0, 3, 4, 8; YSZ) with different sizes of 7.5 nm and 9 nm; 7.5 nm and 11 nm; and 7.5 nm and 14 nm, respectively, was studied on direct current using nanostructured objects in the form of compacts obtained by high-hydrostatic pressure (HP-compacts of 300MPa). A unique size effect of the nonlinear (rectifying-type contact) dependence of the electrical properties (in the region U < 2.5 V, I ≤ 2.7 mA) of the contact of different-sized YSZ nanoparticles of the same chemical composition is revealed, which indicates the possibility of creating semiconductor structures of a new type (homogeneous electronics). The electronic structure of the near-surface regions of nanoparticles of studied oxide materials and the possibility of obtaining specifically rectifying properties of the contacts were studied theoretically. Models of surface states of the Tamm-type are constructed considering the Coulomb long-range action. The discovered energy variance and its dependence on the curvature of the surface of nanoparticles made it possible to study the conditions for the formation of a contact potential difference in cases of nanoparticles of the same radius (synergistic effect), different radii (doped and undoped variants), as well as to discover the possibility of describing a group of powder particles within the Anderson model. The determined effect makes it possible to solve the problem of diffusion instability of semiconductor heterojunctions and opens up prospects for creating electronic devices with a fundamentally new level of properties for use in various fields of the economy and breakthrough critical technologies.
Characterization of adsorption properties inherent to zirconia dioxide for different positions of yttrium in the ZrO2–Y2O3 lattice
Publication . Lyubchyk, Svitlana I.; Lyubchyk, Sergiy B.; Lyubchyk, Andriy I.; LAQV@REQUIMTE; National Academy of Sciences of Ukraine - Institute of Semiconductor Physics
Presented in this paper is theoretical studying redistribution of electric charges in the layer of a tetragonal plate of yttrium-stabilized zirconia based on the position of yttrium atom in the crystal lattice for both dry and humid ambient atmosphere. The density functional theory with local density approximation (DFT-LDA) has been employed for this modelling. Calculations have been performed for layer-by-layer electron density distribution over the thickness of an infinite plate 001 of yttrium-stabilized tetragonal zirconium dioxide, which show that a change in the position of stabilizing yttrium atom and its symmetry in the layer leads to changing the total energy of zirconium dioxide both for the dry 001 surface and for the hydrated one. It has been ascertained that the surface charge density for the 001-surface of an infinite tetragonal zirconia plate increases in proportion to the degree of hydration.
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European Commission
Programa de financiamento
H2020
Número da atribuição
871284