Modeling of Chemical Surface Deposition (CSD) of CdS and CdSe Semiconductor Thin Films

Guminilovych, Ruslana; Shapoval, Pavlo; Yatchyshyn, Iosyp; Shapoval, Stepan

doi:10.23939/chcht09.03.287

Cited by 13 publications

(5 citation statements)

References 4 publications

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“…Concentrating systems capable of increasing the heat flow density attract special attention [7,8]. The efficiency of flat solar collectors can be increased by increasing the heat exchange area, using highly thermally conductive materials, creating turbulence and changing the direction of fluid movement [9,10], as well as applying a selective coating [11]. Studies have shown that solar collectors equipped with a phase-changing material and a radiator provide longer supply of hot water in the evening and have a lower output temperature in the morning [12].…”

Section: -9969mentioning

confidence: 99%

Analysis of the energy efficiency of a system with a hybrid solar collector and thermal energy storage

Mysak,

Shapoval

2024

TAPR

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The object of research is heat transfer in a hybrid thermal photovoltaic solar collector. International agreements and strategies aimed at combating climate change and reducing greenhouse gas emissions strongly call for the active implementation of renewable energy sources on a global scale. A special emphasis is placed on the development of solar energy, which has significant growth potential due to the constant improvement of technologies and cost reduction of production. With this in mind, the authors focused on the development and analysis of a computer model of an innovative hybrid system that effectively combines a solar collector for the simultaneous production of both thermal and electrical energy. The research included a detailed study of the temperature changes of the heat carrier in the hybrid photovoltaic solar collector and thermal accumulator during the period of solar irradiation. Thanks to careful monitoring, the main patterns of gradual temperature increase in both key components of the hybrid system were established. In addition, an assessment of the dynamics of changes in the instantaneous thermal power of the solar collector under the influence of various factors, such as the intensity of solar radiation, the angle of inclination of the collector, wind speed, etc., was carried out. The results of computer modeling showed the average indicator of the efficiency of the entire hybrid system, as well as its variations during a certain time of operation. In addition, the change in the instantaneous specific heat capacity and the overall efficiency of heat energy generation by the hybrid photovoltaic solar collector were analyzed. Special attention was paid to the study of the dynamics of changes in the thermal efficiency of the entire system, as well as its ability to efficiently store thermal energy in a specialized battery. The comprehensive analysis made it possible to obtain the key thermophysical parameters of the developed hybrid system with a photovoltaic solar collector. This data is extremely important, as it will allow engineers and scientists to accurately calculate the potential performance and efficiency of such a system when it is put into practical use in the future. In general, the results of the study emphasize the promising development of hybrid solar collectors as one of the leading technologies in the field of renewable energy in the context of global challenges of climate change.

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Section: -9969mentioning

confidence: 99%

Analysis of the energy efficiency of a system with a hybrid solar collector and thermal energy storage

Mysak,

Shapoval

2024

TAPR

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“…Vibratory treatment is usually used for performing various finishing technological operations, e.g., lapping, polishing, glazing, grinding, strengthening (hardening), etc. As an example, the vibratory finishing treatment can be implemented while manufacturing semiconductors [1]. As well, the mentioned above technological operations are widely used in pharmaceutical, chemical, agricultural, mining, machine-building industries, etc.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the possibilities of generating the reciprocating motion and plane oscillations of a working member of a vibratory lapping-polishing machine

Korendiy¹,

Zakharov²,

Kuzio³

et al. 2023

Vib. proced.

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Vibratory treatment is widely used in various industries for performing finishing technological operations, e.g., lapping, polishing, glazing, strengthening (hardening), etc. The problems of maximizing the treatment accuracy and performance of vibratory technological equipment provide the necessity of optimizing the motion trajectory (path) of the corresponding working member. The main purpose of these investigations is to substantiate the possibilities of generating the translational (reciprocating) motion and plane (plane-parallel) oscillations of the working members of vibratory lapping-polishing machines. The research methodology consists of the following stages: substantiating the ideas of improving the vibratory lapping-polishing machines; designing the dynamic diagrams of the machines’ oscillatory systems; developing the mathematical models to describe their dynamic behavior; numerical modeling of the machines’ motion conditions. The obtained results present the possible motion trajectories (paths) of the working member (lap, polisher, grazer, etc.). The main scientific novelty of these investigations is substantiating the idea and possibilities of implementing various motion conditions of the working member for adjusting the vibratory lapping-polishing machine in accordance with the technological requirements, as well as for increasing the wear-out period and durability (normal operating period) of the working member. The obtained results can be used for improving the performance and accuracy of similar vibratory lapping-polishing machines.

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“…The optimization of this process has been made for zinc and cadmium chalcogenides [5][6][7]. It is based on determination of metal content by anodic stripping voltammetry in a water solution, prepared by dissolving thin films [8][9]. In case of HgSe films it is convenient to use measurements of coatings mass changes, since mercury selenide is difficult to dissolve in water solutions.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Synthesis Conditions of Mercury Selenide Thin Films

Sozanskyi¹,

Stadnik²,

Shapoval³

et al. 2020

ChChT

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The mercury selenide (HgSe) films were obtained on glass substrates via the chemical deposition method. The aqueous solutions of mercury(II) nitrate, sodium thiosulfate, sodium selenosulfate and tri-sodium citrate were used. X-ray and elemental analysis of the film sample were made. The effect of initial reagents concentration, synthesis duration and temperature on the mass of HgSe films was investigated and coatings thickness was calculated. The optical and morphological properties of HgSe films were examined. The deposition mechanism is discussed.

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Modeling of Chemical Surface Deposition (CSD) of CdS and CdSe Semiconductor Thin Films

Cited by 13 publications

References 4 publications

Analysis of the energy efficiency of a system with a hybrid solar collector and thermal energy storage

Analysis of the energy efficiency of a system with a hybrid solar collector and thermal energy storage

Analyzing the possibilities of generating the reciprocating motion and plane oscillations of a working member of a vibratory lapping-polishing machine

Optimization of Synthesis Conditions of Mercury Selenide Thin Films

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