Semiconductor physics, quantum electronics and optoelectronics最新文献

Effect of annealing in air on the properties of carbon-rich amorphous silicon carbide films 空气中退火对富碳无定形碳化硅薄膜性能的影响

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.054

A.M. Lukianov, M.G. Dusheiko, V. Lozinskii, V. Temchenko, V. N. Dikusha, N. Klyui

引用次数: 0

Numerical study of single-layer and interlayer grating polarizers based on metasurface structures for quantum key distribution systems 基于元表面结构的单层和层间光栅偏振器在量子密钥分发系统中的数值研究

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.109

A. Q. Baki, S.K. Tawfeeq

引用次数: 0

Study of fractality nature in VO2 films and its influence on metal-insulator phase transition 研究 VO2 薄膜的分形性质及其对金属-绝缘体相变的影响

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.028

A.A. Efremov, B.M. Romaniuk, V.P. Melnyk, O.A. Stadnik, T.M. Sabov, O.A. Kulbachinskiy, O.V. Dubikovskiy

{"title":"Study of fractality nature in VO2 films and its influence on metal-insulator phase transition","authors":"A.A. Efremov, B.M. Romaniuk, V.P. Melnyk, O.A. Stadnik, T.M. Sabov, O.A. Kulbachinskiy, O.V. Dubikovskiy","doi":"10.15407/spqeo27.01.028","DOIUrl":"https://doi.org/10.15407/spqeo27.01.028","url":null,"abstract":"The mechanisms underlying the origin of fractal shape of inclusions of a new phase in VO2 films during metal-insulator phase transition are discussed. The obtained results show that hysteresis of the temperature dependence of resistance R(T) significantly depends on the film morphology and texture. Moreover, some fractal features are observed. To determine the fractal dimension D of the structural elements of the studied films from their images, different fractal analysis approaches were preliminary compared and discussed. As a result of the film image treatments, the boundaries of the structural elements were found to have fractal dimensions of 1.3 to 1.5 or higher and to correlate with the shape of R(T). The fractal boundaries indicate the dominant role of elastic stress on the phase transition of films, which is confirmed by numerical modeling. Based on these results, an analytical model is proposed that relates the free energy of a film to the fractal dimension of its constituents. Depending on the ratio of the elastic and interface specific energies, the position of the free energy minimum F corresponds to a certain fractal dimensionality D. A small interface energy leads to a higher fractal dimension making the initial phase more stable. This conclusion explains well all the effects observed experimentally in VO2. The obtained results provide a better understanding of the influence of structure and morphology on other properties of the studied films.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"37 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140250169","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}

引用次数: 0

Structure and optical characterization of chitosan-chitin/Ag nanocomposite thin films 壳聚糖-甲壳素/银纳米复合薄膜的结构和光学表征

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.040

T. Malakhovska, A. Pogodin, M. Filep, R. Mariychuk, M.M. Pop, Ya.I. Studenyak, V.V. Vakulchak, V. Komanicky, S. Vorobiov, M. Sabov

{"title":"Structure and optical characterization of chitosan-chitin/Ag nanocomposite thin films","authors":"T. Malakhovska, A. Pogodin, M. Filep, R. Mariychuk, M.M. Pop, Ya.I. Studenyak, V.V. Vakulchak, V. Komanicky, S. Vorobiov, M. Sabov","doi":"10.15407/spqeo27.01.040","DOIUrl":"https://doi.org/10.15407/spqeo27.01.040","url":null,"abstract":"Chitin and its derivatives are common natural polymers that are widely used in various technological fields. In recent years, considerable attention has been paid to the preparation of polymer nanocomposites based on metal nanoparticles (NPs). Chitin/chitosan-based composites due to high antibacterial activity are suitable for application in related food storage, textile industries. This paper presents an effective and simple method of obtaining chitosan-chitin copolymer/Ag nanocomposites with an extremely high content of metal nanoparticles. The structure and morphology of the synthesized nanocomposites were investigated using X-ray diffractometry, Fourier-transform infrared spectroscopy, electron microscopy, and their optical properties were studied using UV-VIS spectroscopy as well as spectral ellipsometry. It was ascertained that the resulting nanocomposite films are characterized by a uniform distribution of spherical silver nanoparticles, the sizes of which increase (from 55 up to 143 nm) with increasing the Ag+-ions concentration in the reaction mixtures. The optical absorption spectra of nanocomposites are characterized by the presence of an absorption maximum within the range 458…525 nm, which confirms the formation of Ag NPs. A monotonous increase in the values of the energies of optical transitions was observed in the process of increasing the average size of NPs","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140250348","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}

引用次数: 1

Science in 2025-2027 and the SPQEO journal 2025-2027 年的科学》和 SPQEO 期刊

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.004

A. Belyaev, P. Smertenko

{"title":"Science in 2025-2027 and the SPQEO journal","authors":"A. Belyaev, P. Smertenko","doi":"10.15407/spqeo27.01.004","DOIUrl":"https://doi.org/10.15407/spqeo27.01.004","url":null,"abstract":"Relevance of recent research is important for scientists and journals reporting research results. There are many sources of prognoses and one of them is the Report of European Commission \"Looking into the R&I future priorities 2025-2027\". It predicts the importance of the following areas for users: healthcare, energy, climate, sustainability and digitalization. The Ukrainian journal Semiconductor Physics, Quantum Electronics and Optoelectronics (SPQEO) actually focuses on these areas and contributes to the development of related knowledge. Monitoring of last SPQEO issues shows some interesting results: (i) the effect of local field amplification, which causes emergence of ponder motive forces acting on viruses until destruction of viral envelopes; (ii) the methods of malignant tumors treatment taking into account their genesis mechanisms and focusing on correction of definite pathogenesis components, while being nontoxic for other organs and tissues; and (iii) manipulation of the spectral characteristics of a “polycarbonate matrix – gold nanostructures – HTTH dye” system due to influence of gold nanostructures. SPQEO paid attention to the improvement of solar cells (SCs) by considering physical effects such as the effect of space charge region (SCR) recombination on the key characteristics of high-efficiency silicon solar cells, such as photovoltaic conversion efficiency and open-circuit voltage, is not only dependent on the charge-carrier lifetime in the SCR, but also on the ratio of hole-to-electron-capture cross section, σp/σn. Non- traditional SCs were also considered: SCs with perovskite thin films, SCs comprising CdS/CIGS heterojunctions, and vitamin B12-patterned silicon hybrids based SCs. Moreover, SPQEO also covers research results in the fields of quantum devices, diamond- like and oxide films, and light-emitting diodes.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"4 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140248861","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}

引用次数: 0

Difference in the structure and morphology of CVD diamond films grown on negatively charged and grounded substrate holders: Optical study 在带负电和接地基底支架上生长的 CVD 金刚石薄膜的结构和形态差异：光学研究

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.079

Iu.M. Nasieka, V.E. Strelnitski, O.A. Opalev, V.I. Gritsina, K.I. Koshevyi, O.Ya. Horobei, V.V. Lementaryov, V.I. Trokhaniak, M.I. Boyko

{"title":"Difference in the structure and morphology of CVD diamond films grown on negatively charged and grounded substrate holders: Optical study","authors":"Iu.M. Nasieka, V.E. Strelnitski, O.A. Opalev, V.I. Gritsina, K.I. Koshevyi, O.Ya. Horobei, V.V. Lementaryov, V.I. Trokhaniak, M.I. Boyko","doi":"10.15407/spqeo27.01.079","DOIUrl":"https://doi.org/10.15407/spqeo27.01.079","url":null,"abstract":"Microcrystalline diamond films were grown by plasma-enhanced chemical vapor deposition from a CH4/H2 gas mixture on Si single-crystalline substrates placed on negatively charged and grounded substrate holders. The obtained diamond films had the (100) predominant faceting of microcrystals. The film structure and morphology were analyzed by scanning electron microscopy, photoluminescence, Raman and FTIR spectroscopies. The main physical factor causing the difference in the structure of the diamond films grown on the grounded and charged substrate holders was found to be the flow of low-energy (up to 200 eV) Si+, N2+, H, O ions in the latter holder. These ions predominantly embedded into the structure of the diamond films grown on the charged substrate holder leading to appearance of residual mechanical stress up to 2 GPa. Ion bombardment led to increase in the volume fraction of non-diamond carbon component in the film grain boundaries, decrease in sp3-bonded carbon fraction and reduction of the diamond microcrystals lateral size. Larger amount of grain boundaries in the diamond films grown on the charged substrate holder promoted diffusion of Si atoms from the substrate to the plasma and growing film surface, inducing formation of SiV centers in the diamond microcrystals even in the 150…200 μm thick films. The concentration of Si-related defects was much smaller in the films grown using the grounded substrate holder. These films had substantially smaller volume fraction of graphite-like carbon in the grain boundaries and were more homogeneous.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"8 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140248799","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}

引用次数: 0

Asymmetry of resonant forward/backward reflectivity of metal – multilayer-dielectric nanostructure 金属-多层电介质纳米结构共振正向/反向反射率的不对称性

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.090

S. G. Ilchenko, V.B. Taranenko

引用次数: 0

The dependence of electrical conductivity of MgxZn1–xO ceramics on phase composition MgxZn1-xO 陶瓷的导电性与相组成的关系

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.070

N. Korsunska, Yu. O. Polishchuk, I. Markevich, K. Kozoriz, S. Ponomaryov, O. Melnichuk, T. Stara, L. Melnichuk, L. Khomenkova

{"title":"The dependence of electrical conductivity of MgxZn1–xO ceramics on phase composition","authors":"N. Korsunska, Yu. O. Polishchuk, I. Markevich, K. Kozoriz, S. Ponomaryov, O. Melnichuk, T. Stara, L. Melnichuk, L. Khomenkova","doi":"10.15407/spqeo27.01.070","DOIUrl":"https://doi.org/10.15407/spqeo27.01.070","url":null,"abstract":"The structural and electrical characteristics of (Mg,Zn)O ceramics produced using the solid state reaction at 1100 °C for 3 hours were studied applying X-ray diffraction and IR reflection spectroscopy as well as means of direct current measurements versus MgO content in initial charge (varied from 0 to 100 mol.%). It has been shown that electrical conductivity extracted from the IR reflection spectra corresponds to that of hexagonal phase in a solid solution, while plasmon in cubic phase was not observed. The electron concentration in the hexagonal grains of solid solution prepared with MgO content below 30 mol. % in the charge was found to be close to that of ZnO grains. It shows the tendency to decrease with further growth of the MgO content, which was explained by extraction of zinc interstitials, responsible for ZnO conductivity, from ZnO under formation of the MgZnO cubic phase. The direct current measurements have shown the lower conductivity as compared to the value estimated from IR reflection spectra. This fact along with the superlinearity of current-voltage characteristics has been explained by the presence of intergranular barriers, which does not allow obtaining information on the concentration of free electrons in the grain by this method. The possible nature of intergranular barriers as well as the role of grain boundaries in the DC conductivity of samples has been discussed.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"11 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140249368","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}

引用次数: 0

The conductivity effect of the top coating on optical properties of thin Cu(Ag)-layered structures 表层镀膜对铜(银)薄层结构光学特性的传导效应

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.095

P. Kovanzhi, I.H. Hyrman, V.G. Kravets, O.S. Kondratenko, L. Poperenko

{"title":"The conductivity effect of the top coating on optical properties of thin Cu(Ag)-layered structures","authors":"P. Kovanzhi, I.H. Hyrman, V.G. Kravets, O.S. Kondratenko, L. Poperenko","doi":"10.15407/spqeo27.01.095","DOIUrl":"https://doi.org/10.15407/spqeo27.01.095","url":null,"abstract":"This study examines the optical properties of thin Cu (Ag)-layered structures covered with protective layers based on graphene, titanium (TiO2), or aluminium (Al2O3) oxides. The objective is to investigate the impact of these coatings on the optical behaviors of underlying metallic layers, specifically in the spectral range of excitation of surface plasmon resonances. Combining the methods of spectroreflectometry and spectro-ellipsometry was used to analyze the optical characteristics of the hybrid metal-oxide-graphene films. The study shows that graphene, due to its exceptional electrical conductivity and unique optoelectronic properties, significantly modifies the optical behavior of investigated structures. It includes notable changes in refractive and absorption indices, and optical conductivity indicating potential for enhancing light-matter interactions in plasmonic-graphene layered structures with the aim to apply as biosensor. It is important that addition of TiO2 and Al2O3 layers has also strong effects on the optical properties, which are relevant to their respective applications in the fields of optoelectronics and microelectronics. Employing the effective medium approximation and the Tauc–Lorentz model promotes deeper understanding the interplay between interband and intraband electronic transitions at the nanoscale level. It was revealed that the layer thickness of constituted materials and their individual dielectric functions together with addition of a graphene monolayer commit the significance for altering the optical properties of hybrid layered structures. The obtained results are important for the fields of plasmonics and nanotechnology, providing insights for designing sensors and devices with improved optical characteristics.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"60 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140248375","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}

引用次数: 0

Optical and electrical properties of zinc oxide nanofilms deposited using the sol-gel method 采用溶胶-凝胶法沉积的纳米氧化锌薄膜的光学和电学特性

Semiconductor physics, quantum electronics and optoelectronics Pub Date : 2024-03-12 DOI: 10.15407/spqeo27.01.117

A. Fedorenko, K.M. Bozhko, N. Kachur, A.V. Kosiakovskiy, V.P. Maslov

{"title":"Optical and electrical properties of zinc oxide nanofilms deposited using the sol-gel method","authors":"A. Fedorenko, K.M. Bozhko, N. Kachur, A.V. Kosiakovskiy, V.P. Maslov","doi":"10.15407/spqeo27.01.117","DOIUrl":"https://doi.org/10.15407/spqeo27.01.117","url":null,"abstract":"This paper is aimed at investigation of electrical properties inherent to zinc oxide (ZnO) nanofilms prepared using the sol-gel method. The experimental samples consisted of a substrate (25×25×1 mm) made of microscopic glass brand “Voles” covered with the above films of the thickness ranging from 50 to 150 nm. Optical characterization was performed to calculate the bandgap width and to confirm the presence of zinc oxide in the nanofilms and demonstrate their optical activity. An oscillographic method was used to measure the surface resistance of nanofilms by using a galvanic elastic contact, which allowed determining their high electrical quality and resistance. Simultaneously, the high mechanical strength of these nanofilms was ascertained under the action of the elastic contact, enduring a series of 5 to 10 measurements without noticeable changes in resistance. Measurements were also carried out to observe the change in the electrical resistance of ZnO films, when they were heated from 25 up to 100 °C. The obtained results have indicated the potential of these nanofilms for applications in the fields of electronics, photoelectronics and sensor technologies.","PeriodicalId":21598,"journal":{"name":"Semiconductor physics, quantum electronics and optoelectronics","volume":"50 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140250289","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}

引用次数: 1