The temperature dependent studies of Luminescent in nanosized SnO2 films

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dc.contributor.authorHrinevych, Viktor S.
dc.contributor.authorFilevska, Liudmila M.
dc.contributor.authorSmyntyna, Valentyn A.
dc.contributor.authorUlug, B.
dc.date.accessioned2018-05-15T13:05:08Z
dc.date.available2018-05-15T13:05:08Z
dc.date.issued2017
dc.description.abstractTin dioxide, widely used in various electronics industries, is not a luminophore material, however, the luminescence of crystalline dioxide at low temperatures is described in the literature [1]. Nanoscale forms of this material liave recently been increasingly described as luminescent, which expands the possibilities of its use [2]. The paper presents the results of temperature studies of the luminescence of nanoscale tin dioxide films obtained by a sol-gel method using polymers in the 9-300 К range. SnOj films obtained using polymers exhibited photoluminescence at room temperature in the orange-red region of the spectrum. Two peaks are observed in the photoluminescence spectra: the first in the region 1.85-1.9 eV and the second in the region o f 2.32 eV. Apparently, the peak at 647 nm (1.9 eV) is associated with oxygen vacancies in the samples studied, and in the region of 2.32 eV with excess tin. The temperature dependences of the peak energy, their intensity and lialf-width are considered. The temperature dependences show a significant decrease in the luminescence intensity of the peaks with increasing temperature. The observed effect is explained by the temperature quenching of luminescence as a result of nonradiative recombination. This is a consequence of the existence of a significant density of electron states at the edges of the forbidden band, specific for in dioxide, especially for nanoscale thin films with a significant disruption o f long-range order.uk
dc.identifier.citationInternational reseach and practice conference: "Nanotechnology and nanomaterials" (NANO-2017), 23-26 august 2017, Chernivtsi, Ukraine : abstract book / The NAS of Ukraine, Inst. of physics [et al.] ; chairman A. G. Naumovets . – Kiev : Burlaka, 2017uk
dc.identifier.urihttps://dspace.onu.edu.ua/handle/123456789/14973
dc.language.isoenuk
dc.subjectdioxideuk
dc.subjectluminophore materialuk
dc.subjecttemperatureuk
dc.subjectluminescence of crystalline dioxideuk
dc.subjectSnOj filmsuk
dc.subjectpeak energyuk
dc.titleThe temperature dependent studies of Luminescent in nanosized SnO2 filmsuk
dc.typeArticleuk
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