Preparation of CdS – PbS solid solutions based on cadmium sulfide thin films by hydro-chemical method using ion exchange technology

В данной работе изучались состав, структура и морфология многофазных полупроводниковых пленок свежеосажденного сульфида кадмия и пленок CdS, выдержанных в растворе ацетата свинца Pb(CH3COO)2. Композиции на основе сульфида кадмия, образовавшиеся на межфазной границе CdSтв/Pb2+(aqua), исследовались методами, электронной микроскопии, а также был проведен сравнительный анализ спектров комбинационного рассеяния полученных образцов и индивидуальных сульфидов кадмия и свинца. Впервые показана возможность получения твердых растворов замещения в халькогенидных системах путем ионного обмена на межфазной границе «пленка халькогенида металла – водный раствор».In this paper we studied the composition, structure and morphology of the multi-phase semiconductor thin films of cadmium sulfide films and CdS, which aged in a solution of lead acetate Pb (CH3COO)2 . The composition based on cadmium sulfide, which formed at the interface CdS(sol)/Pb2 + (aqua), were studied by electron microscopy and comparative analysis of the Raman spectra of the samples. For the first time the possibility of obtaining solid solutions in chalcogenide systems by ion exchange at the interface " metal chalcogenide film - water solution " was shown.Программа развития УрФУ на 2013 год (п.1.2.2.3

Получение пленок твердых растворов системы CdS – PbS путем модификации поверхности пленки сульфида кадмия при выдержке в водном растворе соли свинца

The composition, structure, and morphology of multiphase semiconductor as-deposited CdS films and CdS incubated in a lead acetate solution were studied. Compositions examined by electron microscopy and by the Raman scattering. For the first time it was present the formation of a solution at the interface «metal chalcogenide thin film - water solution». Summarizing the results, we can conclude that exposure precipitated films of cadmium sulfide in aqueous salt solution of lead ensures PbS part of the film with the formation of thin-film songs CdS-PbS, including solid solutions substitution Pb1-xCdxS. With subsequent heat treatment of layers when 423 K increases the content of lead sulfide in the solid solution.Изучены состав, структура и морфология многофазных полупроводниковых пленок свежеосажденного сульфида кадмия и пленок CdS, выдержанных в растворе ацетата свинца PbAc2. Композиции на основе сульфида кадмия, образовавшиеся на межфазной границе CdSтв/Pb2+(aqua), исследовали методами электронной микроскопии, а также с помощью спектров комбинационного рассеяния. Впервые показана возможность получения твердых растворов замещения в халькогенидных системах путем ионного обмена на межфазной границе «пленка халькогенида металла – водный раствор»

Preparation of CdS-PbS solid solutions thin films by modifying of the cadmium sulfide film surface when it exposed to an aqueous solution of lead salt

The composition, structure, and morphology of multiphase semiconductor as-deposited CdS films and CdS incubated in a lead acetate solution were studied. Compositions examined by electron microscopy and by the Raman scattering. For the first time it was present the formation of a solution at the interface «metal chalcogenide thin film - water solution». Summarizing the results, we can conclude that exposure precipitated films of cadmium sulfide in aqueous salt solution of lead ensures PbS part of the film with the formation of thin-film songs CdS-PbS, including solid solutions substitution Pb1-xCdxS. With subsequent heat treatment of layers when 423 K increases the content of lead sulfide in the solid solution

Phase formation and structural characteristics of Cd-Pb-S nanopowder compositions produced by modification of CdS powder in a citrate-ammonia solution of a lead salt

Nanopowders obtained by modification of a cadmium sulfide powder in a citrate-ammonia solution of lead acetate have been studied by X-ray diffraction, electron microscopy, and thermal analysis. The type of crystal structure and composition of Cd-Pb-S nanopowders depend on the conditions of their synthesis. The thermoanalytical curves show a well-defined endotherm in the temperature range 284-321 C. The position of this endotherm depends on the duration of contact of a CdS powder with an aqueous solution of a lead salt. Heating nanopowders to 600 C in an argon flow leads to formation of oxygen-containing phases: lead sulfate and cadmium oxide. © 2013 Pleiades Publishing, Ltd

Zoning of the Territory of the Saratov Region by the Intensity of Epidemic Manifestations of HFRS using GIS Analysis

The aim of the study was to zone the territory of the Saratov Region using indicators that influence the intensity of epidemic manifestations of hemorrhagic fever with renal syndrome (HFRS), and to assess the risk of infection of people for a differentiated approach to the organization of anti-epidemic measures in natural foci.Materials and methods. When calculating the intensity of epidemic manifestations of HFRS in the administrative-territorial units (ATUs) of the Region, the indicators that have the greatest impact on the risk of infection were selected: the intensive rate of morbidity among population, the rate of infection of carriers with the HFRS virus, the number of recreational facilities, and the forest cover rate. The paper presents personalized data of HFRS patients, the results of epizootiological monitoring, information about recreational facilities and the forest fund of the Saratov Region. All the data considered cover the period of 2010–2022 for each of the administrative districts of the Region and the city of Saratov. To calculate the intensity of epidemic manifestations, the dimension method and the decimal logarithm were used.Results and discussion. As a result of calculations, 8 ATU of the Regions have been classed as the territories with the highest intensity of epidemic manifestations and the risk of HFRS infection, with high intensity – 9, with medium – 10 and low – 12. Epidemiological geo-information analysis made it possible to establish that the territories with the highest intensity of epidemic manifestations of HFRS occupy 15.8 % of the area of the region, high – 23.8 %, medium – 28.5 %, low – 31.9 %. Based on the findings of the study, 16 districts of the Region and the city of Saratov were identified as the most dangerous in terms of HFRS infection. Namely these territories that primarily require targeted epizootiological monitoring for early and effective management of preventive activities

HYDROCHEMICAL DEPOSITIONOF SOLID SOLUTIONSCdS-PbS IN THE SYSTEM «CdCl2-PbAc2-H2NCH2CH2NH2-N2H4CS»

In this work solid solutions of CdS – PbS system were obtained by chemical bath deposition. It was found that cadmium content in CdxPb1-xS composition is depend on Cd2+/Pb2+ ratio in the reaction mixture

Preparation of CdS - PbS solid solutions thin films by modifying of the cadmium sulfide film surface when it exposed to an aqueous solution of lead salt

The composition, structure, and morphology of multiphase semiconductor films of as-deposited CdS and CdS incubated in a lead salt solution were studied. Compositions examined by electron microscopy and by the Raman scattering. For the first time it was present the formation of a solution at the interface "metal chalcogenide thin film - water solution."Изучены состав, структура и морфология многофазных полупроводниковых пленок свежеосажденного сульфида кадмия и пленок CdS, выдержанных в растворе ацетата свинца PbAc2. Композиции на основе сульфида кадмия, образовавшиеся на межфазной границе CdSтв/Pb2+(aqua), исследовали методами электронной микроскопии, а также с помощью спектров комбинационного рассеяния. Впервые показана возможность получения твердых растворов замещения в халькогенидных системах путем ионного обмена на межфазной границе «пленка халькогенида металла – водный раствор»