Berdyansk State Pedagogical University
Zaporizhia, Ukraine
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Suchikova Y.O.,Berdyansk State Pedagogical University
Journal of Nano- and Electronic Physics | Year: 2017

The paper describes the effect of the chemical treatment of porous indium phosphide in sulfide solutions on the photoluminescence spectrum. It was shown that the surface sulfiding samples leads to a state of inertia with respect to oxygen. It is found that the thin crystal film is formed of a chemically inert material during chalcogenide passivation por-InP removes oxide layer instead. © 2017 Sumy State University.

Sullivan J.E.,Annapolis flyer cab | Kamensky D.,Berdyansk State Pedagogical University
Electricity Journal | Year: 2017

On Dec. 23, 2015, a well-planned, perfectly synchronized and brilliantly executed cyber-attack caused a six-hour blackout for hundreds of thousands of customers in and around Ukraine's capital city of Kiev. While there have been no reported cases of cyber-terrorism causing power outages in the U.S., the attack methodology, tactics, techniques and procedures that were successfully deployed in Ukraine could be deployed against infrastructure here and around the world. © 2017 Elsevier Inc.

Khrypko S.L.,Berdyansk State Pedagogical University | Kidalov V.V.,Berdyansk State Pedagogical University
Journal of Nano- and Electronic Physics | Year: 2016

Converting solar energy into electric energy with using of solar batteries is a major task for developers and research teams. In this article we will look at the development of different generations of solar batteries for to create a nanocomposite structure. Production of solar batteries has gone through some steps, taking into account technological and economic aspects that have been associated with improved of their parameters. Thus the first generations of solar batteries have been based on the single-crystal silicon substrates (c- Si). The use of polycrystalline silicon and multi- crystalline allowed lower costs of modules, but due to the efficiency of solar energy conversion. The solar batteries of the second generation were based on thin-film technology, in which use different materials: silicon films based on amorphous silicon (a-Si), a film based on cadmium telluride (CdTe) and film selenide copper-indium-gallium (CuInGaSe2, or CIGS). The use of such technology has allowed increasing the coefficient of performance (COP) solar cell with a significant reduction in costs. The solar batteries of third-generation based on nanotechnology, nanocrystals and nanosized clusters of semiconductors. The creation of such solar cells requires availability of a low-dimensional composite structure. Low-dimensional nanocomposite structures that are constructed on quantum dots and nano-porous materials have new modified optoelectronic properties. They can be used in solar elements, where absorption bands can be optimally adapted to the wavelength of radiation light. These structures could theoretically can lead to increased efficiency of solar energy conversion more than 65%, which can double practically current efficiency of solar batteries.

Suchikova Y.,Berdyansk State Pedagogical University
EasternEuropean Journal of Enterprise Technologies | Year: 2016

The paper considers the ways of provision of environmental safety. A scheme of multilevel decomposition of the problems of provision of environmental safety through the use of innovative technologies for solar energy sector is presented. It is demonstrated that it is possible to increase efficiency of photoelectric modifiers of energy through the use of nanostructured semiconductors. The possibilities of minimizing the reflection ability (due to catching light in pores), an increase in the width of the restricted band of porous layer (due to quantum retaining of charges in microcrystallites) due to changing the porosity allow the use of layers of porous semiconductor both as anti-reflecting coating and as a broadband photosensitive layer. Under condition of using nanostructured semiconductors, the sensitivity of solar panels to the surface contamination decreases greatly. The economic benefits of using porous silicon in solar power include low cost of an area unit of a solar battery, which is provided for by the cost parameters of basic technology for manufacturing porous material. The method of electrochemical etching of nanostructures was used to obtain nanostructures. Basic regularities of the formation of porous layer at the surface of semiconductors of the A3V5 group and silicon were established. Technological conditions are selected individually for each semiconductor. The establishment of these regularities allows the optimization of the etching process and the fabrication of porous layers with the assigned parameters. © Y. Suchikova, 2016.

Suchikova Y.O.,Berdyansk State Pedagogical University
Journal of Nano- and Electronic Physics | Year: 2017

The paper describes the methodology of creating block nanostructures on the surface of the p-InP by photoelectrochemical etching. We use different etching modes and electrolyte compositions. It is shown that the micromorphology of nanostructured layers depends on the HCl concentration in the electrolyte solution. Block nanostructures investigated by scanning microscopy method EDAX and X-ray diffractometry analysis. Blocks explained by the formation of the kinetic mechanism of dissolution of the crystals. © 2017 Sumy State University.

Styrov V.V.,Berdyansk State Pedagogical University | Simchenko S.V.,Mariupol State University
Journal of Surface Investigation | Year: 2012

The internal emission of hot electrons from a metal (Pd) surface is studied. The electrons gain energy from chemical atomic collisions with the thermal energy hydrogen atoms or with H2 + O2 molecules. A Pd(15 nm)/n-Si(111) nano-Schottky diode is used as a detector of hot electrons in which chemicurrents (and chemo-emf) are generated. The efficiency of entering of chemo-electrons into the external circuit per act of interaction (or per product molecule) is determined. © 2012 Pleiades Publishing, Ltd.

Styrov V.V.,Berdyansk State Pedagogical University
Technical Physics Letters | Year: 2015

Nonthermal (nonequilibrium) generation of hot electrons (electron-hole pairs) in palladium has been observed due to the chemical energy transfer to electrons in the metal during the exothermal reaction of hydrogen peroxide decomposition at the aqueous H2O2 solution-palladium interface. The yield of electronhole pairs (per decomposed peroxide molecule) in the metal has been determined. © 2015, Pleiades Publishing, Ltd.

Styrov V.V.,Berdyansk State Pedagogical University | Simchenko S.V.,Berdyansk State Pedagogical University
Technical Physics Letters | Year: 2013

The process of chemical-energy transformation into electricity is studied on the surface of a semiconductor structure (SiC-based nanosized p-n junctions). The energy transformation occurs due to the interaction of hydrogen and oxygen atoms, as well as mixtures of H + O and CH3 + H with the surface and subsequent separation of the electron-hole pairs by the electric field of the p-n junction. The top p-layer of a SiC-based structure has a thickness of about 30 nm. It is shown that, in an open circuit, the chemo emf has reached 3 mV and the short circuit chemicurrent 320 nA. © 2013 Pleiades Publishing, Ltd.

Suchikova J.A.,Berdyansk State Pedagogical University
Journal of Nano- and Electronic Physics | Year: 2015

The paper presents a technique to obtain InN films on porous InP substrates by radical-beam gettering epitaxy. According to the results of the Auger spectroscopy, InN film thickness ranged from 100 nm to 0.5 microns depending on the etching conditions. © 2015 Sumy State University.

Styrov V.V.,Berdyansk State Pedagogical University | Simchenko S.V.,Berdyansk State Pedagogical University
JETP Letters | Year: 2012

It is found that the chemical energy released in the recombination of monatomic hydrogen on the surface of selenium is efficiently transferred to the electron subsystem of the crystal, which is manifested in the generation of electron-hole pairs and excitation of steady-state chemicurrent. Both the stage of adsorption and the stage of association of the hydrogen atoms on the surface contribute to the effect. The atomic hydrogen-selenium system is a very simple one and can be used as a model system in the search for semiconductors and chemical reactions suitable for direct conversion of the chemical energy into electricity. © 2012 Pleiades Publishing, Ltd.

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