There are a great variety of wind turbine constructions but by their principle of operation they are divided into three main types -sail (Savoniuswind power unit), propeller and airfoils (Darrieus wind turbine). At present, propeller-type wind-turbines are the most widely spread. They are produced on a commercial level in many countries. Other conditions being equal, the power produced by wind power unit (WPU) is proportional to the area being swept around by a wind wheel. Therefore, Megawatt propeller-type wind turbines have blades with the length of 40 and more meters. Only aircraft works with a highly-qualified personnel and corresponding equipment can produce such long blades of a specific shape. Of high interest have become airfoil wind turbines (Darrieus WPU) lately. They are of a simpler construction and have a quite high wind power utilization factor (ξ=0.45). In spite of the fact that this is a good index of WPU efficiency, the workers of al-Farabi Kazakh National University have developed a new version of a wind turbine which allows increasing 1.3-1.6 times the value of this coefficient. This apparatus is named a Bidarrieusunit. This paper presents the description of a Bidarrieusunit, the principle of its operation and the possibility of increasing the wind power utilization factor. Also, the results of testing an acting laboratory model in an aerodynamic tunnel
{"title":"RESULTS OF THE EXPERIMENTAL STUDY OF THE FLOW FIELD OF A STATIONARY AIR FLOW DURING THE OPERATION OF A FOUR-BLADE BIDARRIEUS-1 TURBINE","authors":"A. Yershina","doi":"10.31489/2022no3/60-68","DOIUrl":"https://doi.org/10.31489/2022no3/60-68","url":null,"abstract":"There are a great variety of wind turbine constructions but by their principle of operation they are divided into three main types -sail (Savoniuswind power unit), propeller and airfoils (Darrieus wind turbine). At present, propeller-type wind-turbines are the most widely spread. They are produced on a commercial level in many countries. Other conditions being equal, the power produced by wind power unit (WPU) is proportional to the area being swept around by a wind wheel. Therefore, Megawatt propeller-type wind turbines have blades with the length of 40 and more meters. Only aircraft works with a highly-qualified personnel and corresponding equipment can produce such long blades of a specific shape. Of high interest have become airfoil wind turbines (Darrieus WPU) lately. They are of a simpler construction and have a quite high wind power utilization factor (ξ=0.45). In spite of the fact that this is a good index of WPU efficiency, the workers of al-Farabi Kazakh National University have developed a new version of a wind turbine which allows increasing 1.3-1.6 times the value of this coefficient. This apparatus is named a Bidarrieusunit. This paper presents the description of a Bidarrieusunit, the principle of its operation and the possibility of increasing the wind power utilization factor. Also, the results of testing an acting laboratory model in an aerodynamic tunnel","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47465430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The effect of the chemical structure of polymethine dyes on their spectral-luminescent and photovoltaic properties has been studied. It has been shown that the introduction of hydroxyl functional groups into the dye structure leads to a bathochromic shift of the absorption and fluorescence bands. During the adsorption of dyes on the surface of titanium dioxide, a shift of their spectra to the red wavelength region was recorded with a simultaneous broadening of the bands caused by dye aggregation on the semiconductor surface. A decrease in the lifetimes of the excited state of molecules by 64 and 30% was registered for dyes 1 and 2, respectively. Quenching of the fluorescence lifetimes of adsorbed molecules is the result of electron transfer from the dye to the semiconductor. Measurements of the photovoltaic parameters of the studied dye-sensitized solar cells showed a higher efficiency for the functionalized dye, which is associated with better adsorption of this compound on TiO2
{"title":"HOTOVOLTAIC PROPERTIES OF FUNCTIONALIZED INDODICARBOCYANINE DYE","authors":"N. Ibrayev","doi":"10.31489/2022no3/55-59","DOIUrl":"https://doi.org/10.31489/2022no3/55-59","url":null,"abstract":"The effect of the chemical structure of polymethine dyes on their spectral-luminescent and photovoltaic properties has been studied. It has been shown that the introduction of hydroxyl functional groups into the dye structure leads to a bathochromic shift of the absorption and fluorescence bands. During the adsorption of dyes on the surface of titanium dioxide, a shift of their spectra to the red wavelength region was recorded with a simultaneous broadening of the bands caused by dye aggregation on the semiconductor surface. A decrease in the lifetimes of the excited state of molecules by 64 and 30% was registered for dyes 1 and 2, respectively. Quenching of the fluorescence lifetimes of adsorbed molecules is the result of electron transfer from the dye to the semiconductor. Measurements of the photovoltaic parameters of the studied dye-sensitized solar cells showed a higher efficiency for the functionalized dye, which is associated with better adsorption of this compound on TiO2","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45353315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The TREKIS Monte-Carlo model was applied to study the temporal electronic kinetics of yttrium iron garnet after a swift heavy ion impact. Cross sections of incident particles interaction with the target were determined within complex dielectric function-dynamic structure factor formalism. We found two modes of the spatial propagation of electronic excitation: fast delta-electrons form a front of the excitation while electrons produced due to decay of plasmons generated in a track form the second front slowly following behind the first one.Analysis of mechanisms of target lattice heating pointed to an important contribution of the potential energy released due to recombination of valence holes generated in an ion track. An increase of the excess lattice energy due to elastic scatterings of electrons and holes described with Mott cross-sections is minor. In contrast, complex dielectric function formalism demonstrates the significant contribution of these processes to the heating of the lattice.
{"title":"ELECTRON KINETICS OF YTTRIUM IRON GARNET AFTER SWIFT HEAVY ION IMPACT","authors":"R. Rymzhanov","doi":"10.31489/2022no3/23-28","DOIUrl":"https://doi.org/10.31489/2022no3/23-28","url":null,"abstract":"The TREKIS Monte-Carlo model was applied to study the temporal electronic kinetics of yttrium iron garnet after a swift heavy ion impact. Cross sections of incident particles interaction with the target were determined within complex dielectric function-dynamic structure factor formalism. We found two modes of the spatial propagation of electronic excitation: fast delta-electrons form a front of the excitation while electrons produced due to decay of plasmons generated in a track form the second front slowly following behind the first one.Analysis of mechanisms of target lattice heating pointed to an important contribution of the potential energy released due to recombination of valence holes generated in an ion track. An increase of the excess lattice energy due to elastic scatterings of electrons and holes described with Mott cross-sections is minor. In contrast, complex dielectric function formalism demonstrates the significant contribution of these processes to the heating of the lattice.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49480609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The problem of studying the influence of electron mirrors design features, in particular, the gaps between the electrodes on their electron-optical characteristics is solved. A method to solve the problem that combines the advantages of analytical paraxial and numerical approaches is described. FOCUS CPM software developed by the authors of the work that implements the method described is presented. Calculation accuracy is estimated using the example of a three-electrode mirror. A focus position as a function of gap width between cylindrical electrodes is calculated and analyzed.
{"title":"FOCUS CPM SOFTWARE FOR TRAJECTORY ANALYSIS OF REAL AXIALLY SYMMETRIC ELECTROSTATIC MIRRORS: METHODS AND ALGORITHMS","authors":"Z. Sautbekova","doi":"10.31489/2022no3/91-96","DOIUrl":"https://doi.org/10.31489/2022no3/91-96","url":null,"abstract":"The problem of studying the influence of electron mirrors design features, in particular, the gaps between the electrodes on their electron-optical characteristics is solved. A method to solve the problem that combines the advantages of analytical paraxial and numerical approaches is described. FOCUS CPM software developed by the authors of the work that implements the method described is presented. Calculation accuracy is estimated using the example of a three-electrode mirror. A focus position as a function of gap width between cylindrical electrodes is calculated and analyzed.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42779172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, a cluster router based on eccentricity was worked out, related to the field of telecommunications, especially, to the field of message transmission. Messages in this router are transmitted as packets along the route specified in it between devices connected to the network. Each node in this network is assigned a unique address, thanks towhich routing can be accelerated. Each router forms a routing map, thanks to the calculated eccentricity of nodes, with which the physical route of the packet is selected at the logical address of the cluster. In addition, the routing map is stored in the register and non-volatile memory of the device to prevent information loss. To analyze this cluster device, a fractal analysis of the UV-flower model network was carried out and the information dimensions of Tsallis and Renyi were calculated.
{"title":"CLUSTER ROUTER BASED ON ECCENTRICITY","authors":"Z. Zhanabaev","doi":"10.31489/2022no3/84-90","DOIUrl":"https://doi.org/10.31489/2022no3/84-90","url":null,"abstract":"In this paper, a cluster router based on eccentricity was worked out, related to the field of telecommunications, especially, to the field of message transmission. Messages in this router are transmitted as packets along the route specified in it between devices connected to the network. Each node in this network is assigned a unique address, thanks towhich routing can be accelerated. Each router forms a routing map, thanks to the calculated eccentricity of nodes, with which the physical route of the packet is selected at the logical address of the cluster. In addition, the routing map is stored in the register and non-volatile memory of the device to prevent information loss. To analyze this cluster device, a fractal analysis of the UV-flower model network was carried out and the information dimensions of Tsallis and Renyi were calculated.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41552020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The production of carbon-containing chemicals is a way to decarbonize gas emissions. In particular, methanol (CH3OH) can be produced from associated petroleum gas, which is currently flared. It makes sense to use simple methods of hydrocarbon gas conversion into synthesis gas, such as partial oxidation of methane to create small modular plants for direct operation in oil and gas fields. The numerical modelling of partial oxidation is considered, taking into account the kinetics of chemical processes and the design of the equipment. In this workthe several models have been built to describe partial oxidation of natural gas with air -the equilibrium and complete 3D models which take into account the phenomena of mass and energy transfer, as well as chemical transformation. The main conclusion of the model comparison is that the full numerical model predicts incomplete oxidation quite well, while the simpler equilibrium model does not. In the future, the results of the numerical modelling of oxygen methane conversion will be investigated and presented.
{"title":"METHANOL PRODUCTION UNITS OF MODULAR TYPE FOR INDUSTRY DECARBONIZATION","authors":"Ģ. Zāģeris","doi":"10.31489/2022no3/45-54","DOIUrl":"https://doi.org/10.31489/2022no3/45-54","url":null,"abstract":"The production of carbon-containing chemicals is a way to decarbonize gas emissions. In particular, methanol (CH3OH) can be produced from associated petroleum gas, which is currently flared. It makes sense to use simple methods of hydrocarbon gas conversion into synthesis gas, such as partial oxidation of methane to create small modular plants for direct operation in oil and gas fields. The numerical modelling of partial oxidation is considered, taking into account the kinetics of chemical processes and the design of the equipment. In this workthe several models have been built to describe partial oxidation of natural gas with air -the equilibrium and complete 3D models which take into account the phenomena of mass and energy transfer, as well as chemical transformation. The main conclusion of the model comparison is that the full numerical model predicts incomplete oxidation quite well, while the simpler equilibrium model does not. In the future, the results of the numerical modelling of oxygen methane conversion will be investigated and presented.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41899787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The article is devoted to the study of the properties of lithium zirconate ceramics obtained by solid-phase synthesis. The choice of lithium zirconateceramics as objects of study is due to the great prospects for their use as materials for tritium propagation. Results of a study of the influence of the LiO/ZrO2/Li2ZrO3→ LiO/Li2ZrO3 → Li2ZrO3type phase transformations in ceramics, depending on the annealing temperature, on the strength and thermophysical parameters of ceramics are obtained. During the studies, it was found that the change in hardness and crack resistance are directly dependent on the phase composition and concentration of impurity phases in the composition of ceramics. It has been determined that the displacement of lithium oxideand zirconium dioxide impurity phases leads to an increase in hardness and an increase in resistance to cracking under single compression. It has been established that at annealing temperatures above 900°C, the change in strength and thermophysical parameters is minimal. At the same time, a change in the phase composition of the LiO/ZrO2/Li2ZrO3→ Li2ZrO3type ceramics leads to an increase in the thermal conductivity coefficient by (15-20)%
{"title":"FLUENCE OF PHASE FORMATION PROCESSES IN LITHIUM ZIRCONATECERAMICS ON STRENGTHAND THERMAL PROPERTIES","authors":"A. Kozlovskiy","doi":"10.31489/2022no2/13-18","DOIUrl":"https://doi.org/10.31489/2022no2/13-18","url":null,"abstract":"The article is devoted to the study of the properties of lithium zirconate ceramics obtained by solid-phase synthesis. The choice of lithium zirconateceramics as objects of study is due to the great prospects for their use as materials for tritium propagation. Results of a study of the influence of the LiO/ZrO2/Li2ZrO3→ LiO/Li2ZrO3 → Li2ZrO3type phase transformations in ceramics, depending on the annealing temperature, on the strength and thermophysical parameters of ceramics are obtained. During the studies, it was found that the change in hardness and crack resistance are directly dependent on the phase composition and concentration of impurity phases in the composition of ceramics. It has been determined that the displacement of lithium oxideand zirconium dioxide impurity phases leads to an increase in hardness and an increase in resistance to cracking under single compression. It has been established that at annealing temperatures above 900°C, the change in strength and thermophysical parameters is minimal. At the same time, a change in the phase composition of the LiO/ZrO2/Li2ZrO3→ Li2ZrO3type ceramics leads to an increase in the thermal conductivity coefficient by (15-20)%","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46339457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The problems and prospects of application of non-destructive testing methods for technical diagnostics of the thermal networks state and various technological objects are discussed. The recording of the temperature state of thermal processes by using a flow meter is due to its sensitivity to the change of thermophysical characteristics and the ability to control without the use of an external energy source, etc. The description of the developed device to measuring of the heat flow using of a thermoelectric heat flow converter of a special design is shown. A distinctive feature of the device is the heating element that installed on an insulating layer serving as a support surface. Calibration of the device is proposed to be carried out by replacing the heat flow from the investigated object with the heat flow released in the heating element when an electric current passes through it. The developed device can register the changes in the heat flux density in the range of (25-100) W/m2, which allows it possible to detect the smallest thermal insulation defects.
{"title":"MAIN CHARACTERISTICS OF THE HEAT FLOW METER","authors":"D. Karabekova","doi":"10.31489/2022no2/71-74","DOIUrl":"https://doi.org/10.31489/2022no2/71-74","url":null,"abstract":"The problems and prospects of application of non-destructive testing methods for technical diagnostics of the thermal networks state and various technological objects are discussed. The recording of the temperature state of thermal processes by using a flow meter is due to its sensitivity to the change of thermophysical characteristics and the ability to control without the use of an external energy source, etc. The description of the developed device to measuring of the heat flow using of a thermoelectric heat flow converter of a special design is shown. A distinctive feature of the device is the heating element that installed on an insulating layer serving as a support surface. Calibration of the device is proposed to be carried out by replacing the heat flow from the investigated object with the heat flow released in the heating element when an electric current passes through it. The developed device can register the changes in the heat flux density in the range of (25-100) W/m2, which allows it possible to detect the smallest thermal insulation defects.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47898151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The structural and optical properties of dots based on graphene oxide (GO) obtained by laser ablation method with various energy densities of radiation were studied. It was shown that after laser ablation, the average lateral size of GO sheets was decreased from 1280–1900 nm to 230±95 nm and 110±42 nm for samples prepared at a laser radiation with energy density of E~15 and 21 mJ/cm2, respectively. Raman spectroscopy datashowed that after ablation, the ID/IGratio decreased from 1.04 to 0.97, indicating an increase in the number of sp2-hybridized domains in GO after ablation. A change in the energy density has practically no effect on a change in its functionalization, aswell as the ordering of sp2domains inside a GO sheet. The optical density of GO dispersions and the intensity of their fluorescence depend on the ablation conditions. For non-ablated dispersions along with the luminescence band at 450 nm, additional bandappears in the spectrum with a maximum at about 600 nm. After ablation the distribution of particles becomes more uniform, as evidenced by both the change in the shape of the GO luminescence band and the constancy of the fluorescence lifetime upon registration at different wavelength.
{"title":"THE EFFECT OF LASER ENERGY DENSITY ON THE PROPERTIES OF GRAPHENE DOTS","authors":"E. Seliverstova","doi":"10.31489/2022no2/30-34","DOIUrl":"https://doi.org/10.31489/2022no2/30-34","url":null,"abstract":"The structural and optical properties of dots based on graphene oxide (GO) obtained by laser ablation method with various energy densities of radiation were studied. It was shown that after laser ablation, the average lateral size of GO sheets was decreased from 1280–1900 nm to 230±95 nm and 110±42 nm for samples prepared at a laser radiation with energy density of E~15 and 21 mJ/cm2, respectively. Raman spectroscopy datashowed that after ablation, the ID/IGratio decreased from 1.04 to 0.97, indicating an increase in the number of sp2-hybridized domains in GO after ablation. A change in the energy density has practically no effect on a change in its functionalization, aswell as the ordering of sp2domains inside a GO sheet. The optical density of GO dispersions and the intensity of their fluorescence depend on the ablation conditions. For non-ablated dispersions along with the luminescence band at 450 nm, additional bandappears in the spectrum with a maximum at about 600 nm. After ablation the distribution of particles becomes more uniform, as evidenced by both the change in the shape of the GO luminescence band and the constancy of the fluorescence lifetime upon registration at different wavelength.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49315121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The paper presents the results of a study of the effect of alcohol solvents on the surface structure, optical and electrical characteristics of a Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate filmsannealed at a low atmospheric pressure of 10-3millimetersof mercury. It has been found that the modification of the surface of a polymer film with ethyl and isopropyl alcohols leads to a change in the surface morphology, optical and electrical transport properties of the polymer. It is shown that when the Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate film is modified with alcohol solvents, the absorption spectra show a decrease in the absorption of the polystyrene sulfonate aromatic fragment. It is shown that the structural features of the Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate surface morphology affect the electrical transport parameters of films, such as the resistance of the Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate film, the charge carrier transfer resistance at the Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate/electrode interface, the effective extraction rate, and the effective time of flight of charge carriers. The optimal technological parameters for the production of films have been determined, at which the electrical transport properties of Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate films annealed at low atmospheric pressure increase
{"title":"FFECT OF ALCOHOL SOLVENTS ON THE STRUCTURAL, OPTICALAND ELECTRICAL CHARACTERISTICS OF PEDOT:PSS POLYMER FILMS ANNEALED AT LOW ATMOSPHERIC PRESSURE","authors":"А.К. Aimukhanov","doi":"10.31489/2022no2/35-41","DOIUrl":"https://doi.org/10.31489/2022no2/35-41","url":null,"abstract":"The paper presents the results of a study of the effect of alcohol solvents on the surface structure, optical and electrical characteristics of a Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate filmsannealed at a low atmospheric pressure of 10-3millimetersof mercury. It has been found that the modification of the surface of a polymer film with ethyl and isopropyl alcohols leads to a change in the surface morphology, optical and electrical transport properties of the polymer. It is shown that when the Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate film is modified with alcohol solvents, the absorption spectra show a decrease in the absorption of the polystyrene sulfonate aromatic fragment. It is shown that the structural features of the Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate surface morphology affect the electrical transport parameters of films, such as the resistance of the Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate film, the charge carrier transfer resistance at the Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate/electrode interface, the effective extraction rate, and the effective time of flight of charge carriers. The optimal technological parameters for the production of films have been determined, at which the electrical transport properties of Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate films annealed at low atmospheric pressure increase","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48265121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：