Optical Properties of Cu2S/SnS2 Precursor Layers for the Preparation of Kesterite Cu2SnS3 Photovoltaic Absorber

The Cu2S and SnS2 layers have been prepared by the chemical bath deposition method. The results of SEM and EDX analyses confirm a high stoichiometry of the synthesized semiconductor thin films. The optical properties of the Cu2S and SnS2 layers have been studied, and the optical band gap values have been determined. Keywords: thin films, sulfides, band gap, hydrochemical deposition, transmittance, photovoltaic absorbe

Creation of development zones in the Arctic: methodology and practice

The article describes the basic principles and methodological bases of formation and development of the supporting areas of the Russian Arctic. The work emphasizes that the basis of the methodological approach in the formation of the supporting areas is a vector of development of the territory as an integral project on the principle of coordination of all "industrial" activities in the planning, goal-setting, financing and implementation, which will allow to reduce all kinds of costs and expenses, as well as all the projects included in the supporting areas should be aimed at the development of the macro-region as a whole, not just to solve individual tasks of the industry. The article underlines that the formation of the supporting areas is aimed at achieving a single global goal — to encourage efficiency and diversification of the economy of the Arctic zone, oriented to the preservation and development of the Northern Sea Route

Особые режимы хозяйственной деятельности: перспективы применения в Арктической зоне Российской Федерации

Purpose: investigation of the possibility of applying special regimes of economic activity on the territory of the Arctic zone of the Russian Federation.Methods: the research methodology is based on methods of generalization, analogy, comparative and system analysis; the rules for assessing the effectiveness of the operation of special economic zones were used.Results: the expediency of applying special regimes of economic activity in the Arctic zone of Russia is considered. Mechanisms for establishing and operating such special economic regimes as special economic zones, territorial development zones, territories for outpacing socio-economic development, industrial parks, technoparks and clusters have been studied. The possibility of linking the supposed support zones of development in the Arctic with special modes of economic activity is considered.Conclusions and Relevance: the current trends in the social and economic development of the Arctic zone of the Russian Federation, the need to diversify the region's economy and attract investment determine the appropriateness of using such economic regimes that will contribute to the achievement of the objectives of state policy in the Arctic, taking into account specific conditions for managing the macroregion.The study allows us to conclude that at present there is no clear separation between the indicated regimes. Their effectiveness and effectiveness is not directly dependent on the number of benefits provided.At the present time, any of the existing special regimes in our country can be established on the territory of the Arctic zone of Russia. The adoption of such a decision should be based on a strategic vision for the development of the whole circumpolar region and its individual territories, and also be accompanied by an assessment of the falling incomes, planned tax revenues and the volume of benefits provided within a particular regime of economic activity., Moscow, Russian FederationЦель: Исследование возможности применения особых режимов хозяйственной деятельности на территории Арктической зоны Российской Федерации.Методология проведения работы: Методология исследования базируется на методах обобщения, аналогии, сравнительного и системного анализа; использованы правила оценки эффективности функционирования особых экономических зон.Результаты работы: Рассмотрена целесообразность применения особых режимов хозяйственной деятельности в Арктической зоне России. Изучены механизмы установления и функционирования таких особых режимов хозяйствования как: особые экономические зоны, зоны территориального развития, территории опережающего социально-экономического развития, индустриальные и промышленные парки, технопарки и кластеры.Выводы: Сложившиеся тенденции социально-экономического развития Арктической зоны РФ, необходимость диверсификации экономики региона и привлечения инвестиций определяют целесообразность использования таких режимов хозяйственной деятельности, которые будут способствовать достижению целей государственной политики в Арктике, учитывая при этом специфические условия хозяйствования макрорегиона.Исследование позволяет сделать вывод, что в настоящее время четкого разделения между указанными режимами не прослеживается. Их эффективность и результативность не имеет прямой зависимости от количества предоставляемых льгот.В настоящее время на территории Арктической зоны России может быть установлен любой из существующих в нашей стране особых режимов. Принятие такого решения должно базироваться на стратегическом видении развития всего циркумполярного региона и его отдельных территорий, а также сопровождаться оценкой выпадающих доходов, планируемых налоговых поступлений и объемом предоставляемых льгот в рамках того или иного особого режима хозяйственной деятельности

SPECTRAL AND LUMINESCENT PROPERTIES OF NaY1-xTmxGeO4 IN IR RANGE

A new series of olivine-type NaY1-xTmxGeO4 (x = 0.0–0.2), germanates has been prepared. Spectra of luminescence, diffuse reflection, as well as the temperature dependence of the luminescence intensity have been studying.Работа выполнена в рамках ГЗ ИХТТ УрО РАН тема-АААА-А19-119031890025-9

A facile low-temperature deposition of Sn-rich tin (II) monosulfide colloid particles

A novel, eco-friendly and low temperature synthesis of tin (II) monosulfide colloid particles is described. Chemical bath deposition was successfully applied for the deposition of polynanocrystalline SnS from acidic aqueous solutions. The characterization of the prepared samples was accomplished through elemental analysis, scanning electron microscopy, X-ray powder diffraction, and optical spectroscopy. The composition of tin (II) monosulfide colloids assembled of nanoparticles was found to be Sn-rich. Several simple scenarios for Sn surplus within SnS lattice (Svacancies at S-sublattice, Sn-atoms intercalated between SnS layers and Sn-doping of S-sites) have been analyzed by means of quantum chemical calculations. The potential application of the Sn1+xS colloid particles in solar cells as absorber material and as photocatalyst was demonstrated by measuring the optical properties. © 2020, ITMO University. All rights reserved.This work was performed in accordance with the scientific and research plans and state assignment of the ISSC UB RAS (theme AAAA-A19-119031890025-9) and by the Government of the Russian Federation (program 211, project No 02.A03.21.0006)

SYNTHESIS OF NEW PHOSPHORS BASED ON Tm3+, Nd3+ OR Ho3+ DOPED GERMANATES BY “WET” CHEMICAL ROUTES

Various “wet” synthetic chemical techniques are widely used for the production of multifunctional inorganic materials. In contrast to the standard high-temperature solid state route, methods based on the dissolution of starting reagents allow one to obtain phases with given particle morphology and particle size distribution. Besides, with this approach, the defect structure can be efficiently controlled by varying the synthesis conditions and solution preparation. These advantages are important for producing luminescent materials.This work was supported by the Russian Science Foundation, project № 16-13-10111

Formation of CdxPb1−xS/Cd1-δS Thin-film Two-phase Compositions by Chemical Bath Deposition: Composition, Structure, and Optical Properties

The possibility of forming thin-film two-phase compositions CdxPb1-xS/Cd1−δS using chemical bath deposition from aqueous media with adding various cadmium salts has been demonstrated. The crystal structure, chemical composition, morphology, and the band gap were studied by the X-ray diffraction, scanning electron microscopy, elemental analysis, Auger and Raman spectroscopy, and diffuse reflectance measurements. The formation of a CdxPb1−xS/Cd1−δS substitutional solid solution phase in well-faceted crystallites on the substrate of an X-ray amorphous CdS phase was experimentally shown. The observed difference in the composition of the films deposited with adding different cadmium salts is the result of the effect of the nucleophilicity of the anionic component of these salts on the kinetics of thiourea decomposition. The results demonstrate the possibility of forming thin-film two-phase compositions or heterostructures on the base of cadmium and lead sulfides in one technological stage using chemical bath deposition, which can be important for the creation of solar cells. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.The research was financially supported in part by 211 Program of the Government of the Russian Federation (No. 02.A03.21.0006), was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation (Themes No. AAAA-A18-118020190112-8 (“Flux”), No. AAAA-A18-118020290104-2 (“Spin”), and No. AAAA-A19-119031890025-9) and in part supported by RFBR (projects No. 18-29-11051-mk, 20-48-660041-r-a)

DETERMINATION OF THE BASE COMPOSITION OF SIDERITE BY WDXRF

WDXRF spectrometry was used to determine the concentration of Fe and other elements in a sample of siderite mineral. The reference materials (RMs) were produced by analytes sorption from solutions with known concentration. Control of RMs composition was performed by ICP-MS method, analyzing solutions before and after sorption process. The statistical data processing and metrological parameters evaluation were carried out

DISC1 genetics, biology and psychiatric illness

Psychiatric disorders are highly heritable, and in many individuals likely arise from the combined effects of genes and the environment. A substantial body of evidence points towards DISC1 being one of the genes that influence risk of schizophrenia, bipolar disorder and depression, and functional studies of DISC1 consequently have the potential to reveal much about the pathways that lead to major mental illness. Here, we review the evidence that DISC1 influences disease risk through effects upon multiple critical pathways in the developing and adult brain