Наукові роботи студентів, магістрів, аспірантів (ЕлІТ)
Permanent URI for this collectionhttps://devessuir.sumdu.edu.ua/handle/123456789/150
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Item Cu2ZnSnS4, Cu2ZnSnSe4 Nanocrystals As Absorbers In 3rd Generation Solar Cells(Igor Sikorsky Kyiv polytechnic institute, 2020) Кахерський, Станіслав Ігорович; Кахерский, Станислав Игоревич; Kakherskyi, Stanislav Igorevich; Доброжан, Олександр Анатолійович; Доброжан, Александр Анатольевич; Dobrozhan, Oleksandr Anatoliiovych; Пшеничний, Роман Миколайович; Пшеничный, Роман Николаевич; Pshenychnyi, Roman Mykolaiovych; Курбатов, Денис Ігорович; Курбатов, Денис Игоревич; Kurbatov, Denys Ihorovych; Опанасюк, Надія Миколаївна; Опанасюк, Надежда Николаевна; Opanasiuk, Nadiia MykolaivnaНаночастинки напівпровідникових сполук Cu2ZnSnS4, Cu2ZnSnSe4 були одержані за допомогою метода поліольного синтезу. Методами сканувальної мікроскопії та рентгендифрактометрії досліджені їх морфологічні і структурні властивості. Проведено порівняння особливостей росту наночастинок обох сполук. Одержані в результаті частинки були використані для створення наночорнил, що використовувались для друку поглинальних шарів сонячних перетворювачів з використанням 2d та 3d принтерів.Item Substructural Properties and Anisotropic Peak Broadening in Zn(1-x)MnxTe Films Determined by a Combined Methodology Based on SEM, HRTEM, XRD, and HRXRD(Springer, 2016) Martinez-Tomas, С.; Климов, Олексій Володимирович; Климов, Алексей Владимирович; Klymov, Oleksii Volodymyrovych; Agouram, S.; Курбатов, Денис Ігорович; Курбатов, Денис Игоревич; Kurbatov, Denys Ihorovych; Опанасюк, Анатолій Сергійович; Опанасюк, Анатолий Сергеевич; Opanasiuk, Anatolii Serhiiovych; Muñoz-Sanjosé, V.Lattice deformation and extended defects such as grain boundaries and dislocations affect the crystalline quality of films and can dramatically change material’s properties. In particular, magnetic and optoelectronic properties depend strongly on these structural and substructural characteristics. In this paper, a combined methodology based on SEM, HRTEM, XRD, and HRXRD measurements is used to determine and assess the structural and substructural characteristics of films. This combined methodology has been applied to Zn1-xMnxTe films grown on glass substrates by close-spaced vacuum sublimation. Nevertheless the methodology can be applied to a wide variety of materials and could become a useful characterization method which would be particularly valuable in semiconductor growth field. The knowledge of the structural and substructural characteristics can allow not only the optimization of growth parameters, but also the selection of specific samples having the desired characteristics (crystallite size, minimum dislocation content, etc.) for high-quality technological devices.Item Surface Morphology, Structural and Optical Properties of MgO Films Obtained by Spray Pyrolysis Technique(Acta Physica Polonica A, 2016) Д`яченко, Олексій Вікторович; Дьяченко, Алексей Викторович; Diachenko, Oleksii Viktorovych; Опанасюк, Анатолій Сергійович; Опанасюк, Анатолий Сергеевич; Opanasiuk, Anatolii Serhiiovych; Курбатов, Денис Ігорович; Курбатов, Денис Игоревич; Kurbatov, Denys Ihorovych; Опанасюк, Надія Миколаївна; Опанасюк, Надежда Николаевна; Opanasiuk, Nadiia Mykolaivna; Kononov, O.K.; Cheong, H.; Nam, D.X-ray diffraction, atomic force microscopy, field emission scanning electron microscopy, UV-visible photometry, and photoluminescence measurements were used to investigate the surface morphology and structural and optical properties of MgO films. Magnesium oxide films deposited by the spray pyrolysis technique were studied. The substrate temperature was varied from Ts = 643 K to 693 K. Magnesium chloride hexahydrate (MgCl2 .6H2O), dissolved in deionized water, was used as the precursor solution. It was established that the single phase films crystallize into a cubic structure with very fine crystallite size (about 2 nm). The optical band gaps of the samples were varied from 3.64 eV to 3.70 eV. Also, the films have a high level of transmittance of 90%. Photoluminescence spectra show the emission peaks at approximately 412 nm (3.00 eV) and 524 nm (2.38 eV). The peak with the energy of 3.00 eV is ascribed to holes trapped in magnesium ion vacancies acting as acceptors (F+ center). The broad emission peak at 524 nm is related to the presence of defects (F- centers) associated with oxygen ion vacancies.Item Luminescent and optical characteristics of Zinc Sulfide thin films produced by close-spaced vacuum sublimation(Romanian Academy published by Editura Academiei Romane, 2010) Курбатов, Денис Ігорович; Курбатов, Денис Игоревич; Kurbatov, Denys Ihorovych; Опанасюк, Анатолій Сергійович; Опанасюк, Анатолий Сергеевич; Opanasiuk, Anatolii Serhiiovych; Кшнякіна, Світлана Іванівна; Кшнякина, Светлана Ивановна; Kshniakina, Svitlana Ivanivna; Мельник, В.; Мельник, В.; Mеlnik, V.; Несправа, В.; Несправа, В.; Nesprava, V.The luminescent and optical characteristics of ZnS thin films produced by close-spaced vacuum sublimation technique (CSVS) were investigated in this work. Luminescent and optical investigations allowed determining the fluorescence centers of native defects and uncontrolled impurities.Item Investigation of Optical Properties of Magnesium Oxide Films Obtained by Spray Pyrolysis Technique(Odessa I. I. Mechnikov National University, 2016) Д`яченко, Олексій Вікторович; Дьяченко, Алексей Викторович; Diachenko, Oleksii Viktorovych; Опанасюк, Анатолій Сергійович; Опанасюк, Анатолий Сергеевич; Opanasiuk, Anatolii Serhiiovych; Курбатов, Денис Ігорович; Курбатов, Денис Игоревич; Kurbatov, Denys Ihorovych; Cheong, H.Today more and more areas of optoelectronics used oxide materials, as a result, their study, is very important . Therefore, in this paper, we study optical properties of magnesium oxide films. band gap, spray-pyrolysis, optoelectronics, optical properties.