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Structure and luminescence properties of porous alumina templates doped with rare earth elements and transition metals

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dc.contributor.author ENACHI, M.
dc.contributor.author TROFIM, V.
dc.contributor.author COSEAC, V.
dc.contributor.author TIGINYANU, I. M.
dc.contributor.author URSAKI, V. V.
dc.date.accessioned 2020-09-18T07:17:49Z
dc.date.available 2020-09-18T07:17:49Z
dc.date.issued 2009
dc.identifier.citation ENACHI, M., TROFIM, V., COSEAC, V. et al. Structure and luminescence properties of porous alumina templates doped with rare earth elements and transition metals. In: Moldavian Journal of the Physical Sciences. 2009, nr. 2, pp. 207-213. ISSN 1810-648X. en_US
dc.identifier.issn 1810-648X
dc.identifier.uri http://repository.utm.md/handle/5014/9572
dc.description.abstract We propose to develop phosphor materials on the basis of porous alumina templates doped with rare earth elements and transition metals. This issue is especially important in connection with the development of random lasers, since the scattering properties of the porous template can de controlled by tailoring its morphology. In this work, we demonstrate that, apart from the morphology, the crystallographic structure of the template can be controlled by the conditions of post-anodization thermal treatment applied for the activation of the impurity impregnated from rare earth or transition metal containing solutions. The initially amorphous alumina structure is transformed into a y-Al2O3 phase by annealing at 300–700°C. A б-Al2O3 phase is predominant in samples annealed at 800–1000°C. The samples annealed at temperatures above 1100°C exhibit an α-Al2O3 structure. The technological conditions related to the solution concentration and duration of impregnation, postimpregnation annealing temperature and annealing duration were optimized from the point of view of maximum impurity ion activation. en_US
dc.language.iso en en_US
dc.publisher Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu" al AŞM en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject phosphor materials en_US
dc.subject alumina templates en_US
dc.subject earth elements en_US
dc.subject transition metals en_US
dc.title Structure and luminescence properties of porous alumina templates doped with rare earth elements and transition metals en_US
dc.type Article en_US


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