2. Articole

Permanent URI for this collectionhttps://msuir.usm.md/handle/123456789/47

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    Oxygen-dependent formation of VO2 thin films by metalorganic aerosol deposition [Articol]
    (Universitatea Tehnică din Moldova, 2018-05-24) Belenchuk, Alexandr; Shapoval, Oleg M.; Zasavitsky, E.; Vatavu, Sergiu; Kiritsa, Arcady; Moshnyaga, V.
    We report on the growth and properties of vanadium dioxide (VO2) on amorphous and oriented substrates by the low-cost and industry-oriented method of metalorganic aerosol deposition (MAD). X-ray diffraction and temperature- dependent Raman spectroscopy confirm formation of single phase tin films. Abrupt change of resistance by 5×103 times and steep drop of infrared transmission from 49 to 10% at 1700 nm pave the way for application of MAD technique in fabrication of VO2-based optoelectronic and thermochromic devices, such as “smart windows”.
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    The structure and chemical composition of Ga2O3 oxide prepared by annealing of Ga2Se3 crystals [Articol]
    (Springer Nature, 2020) Sprincean, Veaceslav; Vatavu, Elmira; Dmitroglo, Liliana; Untila, Dumitru; Caraman, Iuliana; Caraman, Mihail
    The chemical composition and structure of Ga2O3 obtained by thermal treatment (TT) in air of β-Ga2Se3 crystals were studied using the X-ray diffraction (XRD) method, Raman spectroscopy, EDX, and SEM. The surface of the Ga2Se3 crystal air annealed at 770 K is covered by β-Ga2O3 layer of microcrystallites and as well as by β-Ga2Se3 crystallites. The oxygen is non-homogeniously distributed on the surface of the 770 K annealed sample. The sample obtained by TT at 1150 K consists of nanolamella, nanotowers, and nanobars of β-Ga2O3, their size being estimated to 10–200 nm.
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    Исследование пленок SnO2, легированных переходными металлами, методом рентгеновской дифракции [Articol]
    (CEP USM, 2021) Борис, Юлия; Брынзарь, Владимир; Тараканова, Лариса; Иванов, Михаил; Коротченков, Геннадий
    The influence of doping of tin dioxide with metals of the transition group during deposition by spray pyrolysis on the film structure is investigated. It is demonstrated that doping is accompanied by an increase in the content of the finely dispersed or amorphous phases. The phase content can be controlled by the change in the intensity of the X-ray diffraction peaks.