A.M. Minyailo, I. V. Pekur, V.I. Kornaga, M.A. Minyailo, D. Pekur, V. Sorokin
The use of LEDs for plant lighting (phytolighting) provides a more energy- efficient alternative to traditional lighting methods. Combination of LEDs with different spectral composition and the possibility to change the composition of resulting radiation in a single lighting device allows one to improve the efficiency of phytolighting systems and optimize them for different conditions of plant growth and development. In this work, we have investigated quasi-monochromatic LEDs specialized for efficient phytolighting and efficient white LEDs with different CRI. Being based on the research, the most effective LEDs for building phytolighting systems have been identified, and their optimal ratio with red quasi-monochromatic LEDs for building phytolighting systems in rooms with a constant presence of people (greenhouses, winter gardens, etc) has been determined.
{"title":"Optimizing the spectral composition of light from LED phytolighting systems to improve energy efficiency","authors":"A.M. Minyailo, I. V. Pekur, V.I. Kornaga, M.A. Minyailo, D. Pekur, V. Sorokin","doi":"10.15407/spqeo26.04.463","DOIUrl":"https://doi.org/10.15407/spqeo26.04.463","url":null,"abstract":"The use of LEDs for plant lighting (phytolighting) provides a more energy- efficient alternative to traditional lighting methods. Combination of LEDs with different spectral composition and the possibility to change the composition of resulting radiation in a single lighting device allows one to improve the efficiency of phytolighting systems and optimize them for different conditions of plant growth and development. In this work, we have investigated quasi-monochromatic LEDs specialized for efficient phytolighting and efficient white LEDs with different CRI. Being based on the research, the most effective LEDs for building phytolighting systems have been identified, and their optimal ratio with red quasi-monochromatic LEDs for building phytolighting systems in rooms with a constant presence of people (greenhouses, winter gardens, etc) has been determined.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"80 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138600308","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}
I. Fodchuk, A. Kuzmin, I. Hutsuliak, M. Borcha, V. Kotsyubynsky
Clorine doped CdTe single crystals (CdTe:Cl) were grown by the traveling heater method. MoO x /CdTe:Cl/MoO x films were deposited using the reactive magnetron sputtering technique. The defect structure of the obtained single crystals and heterostructures was investigated using high-resolution X-ray diffractometry. The optimized models of dislocation systems in the CdTe:Cl single crystals were constructed based on the Thompson tetrahedron. The distribution of the intensity of diffracted X-rays as a function of reciprocal space coordinates and rocking curves was analyzed using the kinematic theory of X-ray scattering in real crystals. The experimental and theoretically predicted values of the helical dislocation densities in the CdTe:Cl and MoO x /CdTe:Cl crystals with perfect and mosaic structures were compared. Two-fold increase in the dislocation concentration in the MoO x /CdTe:Cl heterostructures as a result of compression deformations of the CdTe:Cl crystal lattice was found. The ~0.1 μm thick transition deformed layer at the boundary between the MoO x film and CdTe:Cl single crystal significantly affects the electrical and spectroscopic properties of the obtained systems as the materials for γ-radiation detection.
采用行加热法制备了氯掺杂CdTe单晶(CdTe:Cl)。采用反应磁控溅射技术制备了MoO x /CdTe:Cl/MoO x薄膜。利用高分辨率x射线衍射仪研究了所得单晶和异质结构的缺陷结构。基于汤普森四面体构造了CdTe:Cl单晶位错体系的优化模型。利用实际晶体中x射线散射的运动学理论，分析了衍射x射线强度随空间坐标和摇摆曲线的互易分布。比较了CdTe:Cl和MoO x /CdTe:Cl完美晶体和镶嵌晶体中螺旋位错密度的实验值和理论预测值。由于CdTe:Cl晶格的压缩变形，MoO x /CdTe:Cl异质结构中的位错浓度增加了两倍。在MoO x薄膜和CdTe:Cl单晶之间的~0.1 μm厚的过渡变形层显著影响了所获得的系统作为γ辐射探测材料的电学和光谱性能。
{"title":"Defect structure of high-resistance CdTe:Cl single crystals and MoOx/CdTe:Cl/MoOx heterostructures according to the data of high-resolution X-ray diffractometry","authors":"I. Fodchuk, A. Kuzmin, I. Hutsuliak, M. Borcha, V. Kotsyubynsky","doi":"10.15407/spqeo26.04.415","DOIUrl":"https://doi.org/10.15407/spqeo26.04.415","url":null,"abstract":"Clorine doped CdTe single crystals (CdTe:Cl) were grown by the traveling heater method. MoO x /CdTe:Cl/MoO x films were deposited using the reactive magnetron sputtering technique. The defect structure of the obtained single crystals and heterostructures was investigated using high-resolution X-ray diffractometry. The optimized models of dislocation systems in the CdTe:Cl single crystals were constructed based on the Thompson tetrahedron. The distribution of the intensity of diffracted X-rays as a function of reciprocal space coordinates and rocking curves was analyzed using the kinematic theory of X-ray scattering in real crystals. The experimental and theoretically predicted values of the helical dislocation densities in the CdTe:Cl and MoO x /CdTe:Cl crystals with perfect and mosaic structures were compared. Two-fold increase in the dislocation concentration in the MoO x /CdTe:Cl heterostructures as a result of compression deformations of the CdTe:Cl crystal lattice was found. The ~0.1 μm thick transition deformed layer at the boundary between the MoO x film and CdTe:Cl single crystal significantly affects the electrical and spectroscopic properties of the obtained systems as the materials for γ-radiation detection.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"118 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138599399","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 study, electrical properties at alternating current of the nanocomposite films containing silicon and iron inclusions in amorphous SiO x matrix are presented. The composite SiO 2 (Si)&Fe x O y (Fe) films were obtained using the ion-plasma co-sputtering of Si and Fe targets in oxygen containing atmosphere (Ar + O 2 ) followed by temperature annealing. It was revealed the predominance of the inductive contribution over the capacitive one in the reactive part of the admittance (impedance) at low frequencies (f < 1 MHz) both after annealing in air and nitrogen atmosphere. The frequency dependences of the admittance after heat treatment in air have the minima that shift to the region of high frequencies with increasing the annealing temperature. In the case of low- frequency dependence, the phase shift angle passes into the region of positive values, which indicates the predominance of the inductive contribution to the admittance at these frequencies. The dependence of the conductivity real part at the alternating current frequency does not change significantly up to ~20 kHz. Starting from the frequency higher than ~20 KHz and up to ~1 MHz, the exponent in the frequency dependence of the conductivity lies within the limits m ~ 0.49…0.52.
{"title":"Impedance of nanocomposite SiO2(Si)&FexOy(Fe) thin films containing Si and Fe nanoinclusions","authors":"A. Evtukh, A. Kizjak, S.V. Antonin, O. Bratus’","doi":"10.15407/spqeo26.04.424","DOIUrl":"https://doi.org/10.15407/spqeo26.04.424","url":null,"abstract":"In this study, electrical properties at alternating current of the nanocomposite films containing silicon and iron inclusions in amorphous SiO x matrix are presented. The composite SiO 2 (Si)&Fe x O y (Fe) films were obtained using the ion-plasma co-sputtering of Si and Fe targets in oxygen containing atmosphere (Ar + O 2 ) followed by temperature annealing. It was revealed the predominance of the inductive contribution over the capacitive one in the reactive part of the admittance (impedance) at low frequencies (f < 1 MHz) both after annealing in air and nitrogen atmosphere. The frequency dependences of the admittance after heat treatment in air have the minima that shift to the region of high frequencies with increasing the annealing temperature. In the case of low- frequency dependence, the phase shift angle passes into the region of positive values, which indicates the predominance of the inductive contribution to the admittance at these frequencies. The dependence of the conductivity real part at the alternating current frequency does not change significantly up to ~20 kHz. Starting from the frequency higher than ~20 KHz and up to ~1 MHz, the exponent in the frequency dependence of the conductivity lies within the limits m ~ 0.49…0.52.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138601364","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}
Optical properties of 1D nanocrystals of cadmium sulfide synthesized by vapor– liquid–solid growing were investigated as the function from such technological parameter as overpressure of sulfur vapor at the synthesis process or post-processing by the additional annealing in the sulfur atmosphere (sulfurization). The analyses of UV-vis absorption and photoluminescence spectra indicate considerable dependences of CdS nanocrystals optical parameters from sulfur compensation degree at the synthesis process. The photo- luminescence spectra are characterized by changing the ratio of intensities of the defect level and near band edge emissions at overpressure sulfur vapor treatment. A significant decrease in the intensity of defect level emission after the growth or post-growth treatment in sulfur vapor has been observed. Optical absorption edge calculated using the Tauc relation demonstrates improvement of the crystal structure, which is reflected by the rising optical band gap value that approaches to the value for the bulk material at curing of sulfur vacancies by different technological ways. Optical properties obtained by absorption and luminescent measurements demonstrate total correlation, which corresponds to applied technology.
{"title":"Influence of sulfurization on optical properties of CdS nanocrystals","authors":"A.B. Bogoslovska, D. Grynko, E.G. Bortchagovsky","doi":"10.15407/spqeo26.04.442","DOIUrl":"https://doi.org/10.15407/spqeo26.04.442","url":null,"abstract":"Optical properties of 1D nanocrystals of cadmium sulfide synthesized by vapor– liquid–solid growing were investigated as the function from such technological parameter as overpressure of sulfur vapor at the synthesis process or post-processing by the additional annealing in the sulfur atmosphere (sulfurization). The analyses of UV-vis absorption and photoluminescence spectra indicate considerable dependences of CdS nanocrystals optical parameters from sulfur compensation degree at the synthesis process. The photo- luminescence spectra are characterized by changing the ratio of intensities of the defect level and near band edge emissions at overpressure sulfur vapor treatment. A significant decrease in the intensity of defect level emission after the growth or post-growth treatment in sulfur vapor has been observed. Optical absorption edge calculated using the Tauc relation demonstrates improvement of the crystal structure, which is reflected by the rising optical band gap value that approaches to the value for the bulk material at curing of sulfur vacancies by different technological ways. Optical properties obtained by absorption and luminescent measurements demonstrate total correlation, which corresponds to applied technology.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"12 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138598191","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, nucleation parameters such as induction period, interfacial tension, metastable zone width, radius of critical nucleus and Gibbs free energy change in solution- grown triglycine sodium molybdate (TGSM) single crystals are studied. The solubility of TGSM at different temperatures has been determined. The induction period and metastable zone width have been experimentally found for optimizing the growth process. Various critical nucleation parameters have been calculated from the experimentally obtained values based on the classical nucleation theory. The nucleation rate is found to increase with the growth of the supersaturation value. The third order non-linear parameters such as absorption coefficient (β), susceptibility (χ (3) ) and refractive index (n 2 ) obtained from the Z-scan analysis confirm the self focusing and reverse saturation absorption nature of the grown crystals.
{"title":"Investigation of nucleation parameters and third order nonlinear optical properties of triglycine sodiummolybdate single crystals","authors":"R. Sreedevi, A.S.I Joy Sinthiya, S.C. Vella Durai","doi":"10.15407/spqeo26.04.450","DOIUrl":"https://doi.org/10.15407/spqeo26.04.450","url":null,"abstract":"In this paper, nucleation parameters such as induction period, interfacial tension, metastable zone width, radius of critical nucleus and Gibbs free energy change in solution- grown triglycine sodium molybdate (TGSM) single crystals are studied. The solubility of TGSM at different temperatures has been determined. The induction period and metastable zone width have been experimentally found for optimizing the growth process. Various critical nucleation parameters have been calculated from the experimentally obtained values based on the classical nucleation theory. The nucleation rate is found to increase with the growth of the supersaturation value. The third order non-linear parameters such as absorption coefficient (β), susceptibility (χ (3) ) and refractive index (n 2 ) obtained from the Z-scan analysis confirm the self focusing and reverse saturation absorption nature of the grown crystals.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"106 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138599811","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}
V. Temchenko, V. Lozinskii, I. Vorona, O.Yo. Gudymenko, Iu.M. Nasieka, V. Dzhagan, O.F. Isaieva, V. Yukhymchuk, M. Valakh, A.E. Belyaev
The gas-detonation technique was used for the synthesis of biocompatible hydroxylapatite-based protective coatings on polymer and titanium substrates. Hydroxylapatite powder of high purity with a grain diameter of 50 µm was used as the raw material. The obtained coatings have the thickness close to 200 µm. It has been shown that the offered method enables to create of non-destructive hydroxylapatite-based coatings on polymer by varying the distance between the polymer target and the gun nozzle of gas- detonation setup. Using the data of Raman and X-ray measurements, it was ascertained that gas-detonation deposition doesn’t change the composition of the deposited material. The SEM investigation testifies that the formed hydroxylapatite-based coatings are porous. EPR studies have shown that there are no paramagnetic defects in the obtained coatings, and the coating itself has a higher radiation hardness as compared to the raw powder.
{"title":"Structural and morphological properties of hydroxylapatite coatings obtained by gas-detonation deposition on polymer and titanium substrates","authors":"V. Temchenko, V. Lozinskii, I. Vorona, O.Yo. Gudymenko, Iu.M. Nasieka, V. Dzhagan, O.F. Isaieva, V. Yukhymchuk, M. Valakh, A.E. Belyaev","doi":"10.15407/spqeo26.04.368","DOIUrl":"https://doi.org/10.15407/spqeo26.04.368","url":null,"abstract":"The gas-detonation technique was used for the synthesis of biocompatible hydroxylapatite-based protective coatings on polymer and titanium substrates. Hydroxylapatite powder of high purity with a grain diameter of 50 µm was used as the raw material. The obtained coatings have the thickness close to 200 µm. It has been shown that the offered method enables to create of non-destructive hydroxylapatite-based coatings on polymer by varying the distance between the polymer target and the gun nozzle of gas- detonation setup. Using the data of Raman and X-ray measurements, it was ascertained that gas-detonation deposition doesn’t change the composition of the deposited material. The SEM investigation testifies that the formed hydroxylapatite-based coatings are porous. EPR studies have shown that there are no paramagnetic defects in the obtained coatings, and the coating itself has a higher radiation hardness as compared to the raw powder.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"60 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138600542","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}
To mitigate the green gap problems existing in GaN/InGaN/AlGaN system on sapphire substrate, an In0.17Ga0.83N/InxGa1–xN/AlyGa1–yN based LED structure on ScAlMgO4 (0001) substrate has been introduced for green light (525…565 nm) emission. On ScAlMgO4 (0001) substrate, 35% of In composition with 1.6 nm well thickness and only 15% of Al composition with 1.1 nm thick AlGaN as capping layer on top provide the best LED structure. It provides minimum equivalent lattice mismatch (0.01%) with reasonable overall elastic energy value (0.47 J/m2). Most importantly, it provides at least 10% brighter green light emission than that of sapphire based LED structure.
{"title":"Comprehensive study of group III-nitride light emitting diode structures based on sapphire and ScAlMgO4 (0001) substrate for high intensity green emission","authors":"F. Z. Tithy, S. Hussain","doi":"10.15407/spqeo26.02.215","DOIUrl":"https://doi.org/10.15407/spqeo26.02.215","url":null,"abstract":"To mitigate the green gap problems existing in GaN/InGaN/AlGaN system on sapphire substrate, an In0.17Ga0.83N/InxGa1–xN/AlyGa1–yN based LED structure on ScAlMgO4 (0001) substrate has been introduced for green light (525…565 nm) emission. On ScAlMgO4 (0001) substrate, 35% of In composition with 1.6 nm well thickness and only 15% of Al composition with 1.1 nm thick AlGaN as capping layer on top provide the best LED structure. It provides minimum equivalent lattice mismatch (0.01%) with reasonable overall elastic energy value (0.47 J/m2). Most importantly, it provides at least 10% brighter green light emission than that of sapphire based LED structure.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78741829","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}
Surface plasmon resonance is used for detecting and measuring various analytes characteristics by sensitive elements in sensor devices. At this, the problem of wear of the sensitive elements, contacting with gaseous and liquid environments whose characteristics are measured, arises during operation of sensor devices based on the surface plasmon resonance phenomenon. Wear of a surface gold nanolayer may be caused by various factors such as maintenance (cleaning before measurements), chemical reactions and abrasiveness of the environment. This problem becomes particularly significant when suspensions are measured. Solid particles in the suspensions have abrasive properties, which leads to modifications of the surface, reduction of the thickness and damage of the sensitive gold layer. As a result, more frequent replacements of sensitive elements are required significantly increasing the measurements cost. In this paper, influence of water suspensions of an optical polishing powder “Polarite” on the wear and the associated changes of the characteristics of a sensitive element is investigated. The need to find solutions of the problem of improving its wear resistance is highlighted.
{"title":"Wear resistance of sensors based on surface plasmon resonance phenomenon","authors":"A. Fedorenko, N. Kachur, V. Maslov","doi":"10.15407/spqeo26.02.242","DOIUrl":"https://doi.org/10.15407/spqeo26.02.242","url":null,"abstract":"Surface plasmon resonance is used for detecting and measuring various analytes characteristics by sensitive elements in sensor devices. At this, the problem of wear of the sensitive elements, contacting with gaseous and liquid environments whose characteristics are measured, arises during operation of sensor devices based on the surface plasmon resonance phenomenon. Wear of a surface gold nanolayer may be caused by various factors such as maintenance (cleaning before measurements), chemical reactions and abrasiveness of the environment. This problem becomes particularly significant when suspensions are measured. Solid particles in the suspensions have abrasive properties, which leads to modifications of the surface, reduction of the thickness and damage of the sensitive gold layer. As a result, more frequent replacements of sensitive elements are required significantly increasing the measurements cost. In this paper, influence of water suspensions of an optical polishing powder “Polarite” on the wear and the associated changes of the characteristics of a sensitive element is investigated. The need to find solutions of the problem of improving its wear resistance is highlighted.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"1989 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82305401","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}
Creation of controllable narrow-band emission sources for the mid- and long-wavelength infrared ranges is one of the primary tasks of infrared technology. In this paper, we propose and demonstrate non-luminescent (thermal) magnetically controllable sources of infrared emission based on semiconductor magneto-optical photonic structures (MOPS). It is shown that interference effects cause narrow-band thermal emission spectrum of such sources, and magnetic field makes it possible to effectively control the spectral and amplitude characteristics of emissivity in the mid- and long-wavelength infrared range. Influence of the MOPS composition and design on the source emissive characteristics is studied. Using the obtained results, the designs of A3B5 semiconductor compounds based sources with dynamically tunable spectrum and amplitude modulation of emission are proposed. Theoretical modeling has shown the possibility of dynamic control of their emission parameters by achievable magnetic fields. Such sources may be used in environmental monitoring systems, medicine, forensics, infrared spectroscopy, etc.
{"title":"Narrow-band controllable sources of IR emission based on one-dimensional magneto-optical photonic structures","authors":"E. Venger, V. Morozhenko","doi":"10.15407/spqeo26.02.180","DOIUrl":"https://doi.org/10.15407/spqeo26.02.180","url":null,"abstract":"Creation of controllable narrow-band emission sources for the mid- and long-wavelength infrared ranges is one of the primary tasks of infrared technology. In this paper, we propose and demonstrate non-luminescent (thermal) magnetically controllable sources of infrared emission based on semiconductor magneto-optical photonic structures (MOPS). It is shown that interference effects cause narrow-band thermal emission spectrum of such sources, and magnetic field makes it possible to effectively control the spectral and amplitude characteristics of emissivity in the mid- and long-wavelength infrared range. Influence of the MOPS composition and design on the source emissive characteristics is studied. Using the obtained results, the designs of A3B5 semiconductor compounds based sources with dynamically tunable spectrum and amplitude modulation of emission are proposed. Theoretical modeling has shown the possibility of dynamic control of their emission parameters by achievable magnetic fields. Such sources may be used in environmental monitoring systems, medicine, forensics, infrared spectroscopy, etc.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73291470","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}
E. Antonov, S. Kondratenko, V. Lysenko, V. Petrov, V. N. Zenin
An algorithm has been developed for modeling the parameters of micro-prismatic specialized plane-focusing Fresnel lenses. Such lenses are more effective for application in photovoltaic modules for concentration of sunlight compare to the traditional point-focusing Fresnel lenses. The technical parameters of photovoltaic modules with these lenses were investigated. The method for manufacturing above lenses by diamond cutting technique and subsequent thermal pressing of silicone blanks is proposed. Some samples of specialized plane-focusing microprisms, which are made using our simulation results, have been experimentally investigated.
{"title":"http://journal-spqeo.org.ua/n2_2023/P180-187abstr.html","authors":"E. Antonov, S. Kondratenko, V. Lysenko, V. Petrov, V. N. Zenin","doi":"10.15407/spqeo26.02.188","DOIUrl":"https://doi.org/10.15407/spqeo26.02.188","url":null,"abstract":"An algorithm has been developed for modeling the parameters of micro-prismatic specialized plane-focusing Fresnel lenses. Such lenses are more effective for application in photovoltaic modules for concentration of sunlight compare to the traditional point-focusing Fresnel lenses. The technical parameters of photovoltaic modules with these lenses were investigated. The method for manufacturing above lenses by diamond cutting technique and subsequent thermal pressing of silicone blanks is proposed. Some samples of specialized plane-focusing microprisms, which are made using our simulation results, have been experimentally investigated.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79659015","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}
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