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Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Tecnología de Polvoses
dc.contributor.authorLojpur, Vesna
dc.contributor.authorRabanal Jiménez, María Eugeniaes
dc.contributor.authorDramicanin, M. D.
dc.contributor.authorTan, Z.
dc.contributor.authorHashishin, T.
dc.contributor.authorOhara, S.
dc.contributor.authorMilosevic, Olivera
dc.contributor.authorMancic, Lidija
dc.date.accessioned2015-04-30T08:28:55Z
dc.date.available2015-04-30T08:28:55Z
dc.date.issued2013-12
dc.description.abstractNanocrystalline up-converting Y₂ O₃Yb³⁺ Er³⁺ phosphor particles were processed in a dispersed system-aerosol, generated ultrasonically at 1.3 MHz from common nitrate precursor solution having fixed ytterbium-to-erbium concentration ratio. The appropriate process parameters: residence time 21 s, carrier gas (air) flow rate 1.6 dm3/min, synthesis temperature 900 °C, led to the formation of un-agglomerated spherical nanostructured secondary particles, having mean particle size of approx 450 nm, composed of primary nanoscaled (20 nm) subunits. In order to reach targeting phase crystallinity, the as-prepared particles were additionally annealed at 1100 °C in air for 12, 24 and 48 h, respectively. Particle structure, morphology and purity were analyzed by X-ray powder diffraction (XRPD), scanning electron microscopy (FESEM/SEM), analytical and high resolution transmission electron microscopy (TEM/HRTEM) in combination with energy dispersive X-ray analysis and Fourier Transform Infrared Spectroscopy (FTIR). All samples crystallized in a cubic bixbyte-structure, space group Ia-3. The crystallite size changed with annealing time from 30 nm in as-prepared sample to 135 nm in sample annealed for 48 h, respectively. Emission spectra were assigned to the following trivalent erbium f–f electronic transitions: ²H₉/₂ → ⁴I₁₅/₂ (blue: 407–420 nm), (²H₁₁/₂̦ ⁴S₃/₂) → ⁴I₁₅/₂ (green: 510–590 nm), and ⁴F₉/₂ → ⁴I₁₅/₂ (red: 640–720 nm). The significant improvement of the emission decay times were observed after thermal treatment and this effect is correlated further with the structural and morphological particles characteristics. For the anneal-ing time of 12 h a quite high emission decay times were achieved (blue: 0.14 ms, green: 0.32 ms and red: 0.39 ms).en
dc.description.sponsorshipThis research is financially supported through the Project #172035 of the Ministry of Science and Education of the Republic of Serbia. OM especially acknowledge the University Carlos III, Madrid, Spain-Santander Bank Chairs of Excellence program and JSPS 2011/2012 fellowship, Japan.en
dc.description.statusPublicadoes
dc.format.extent8
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationJournal of Alloys and Compounds (2013). 580, 584-591.en
dc.identifier.doi10.1016/j.jallcom.2013.07.125
dc.identifier.issn0925-8388
dc.identifier.publicationfirstpage584
dc.identifier.publicationlastpage591
dc.identifier.publicationtitleJournal of alloys and compoundsen
dc.identifier.publicationvolume580
dc.identifier.urihttps://hdl.handle.net/10016/20578
dc.identifier.uxxiAR/0000013935
dc.language.isoeng
dc.publisherElsevieren
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.jallcom.2013.07.125es
dc.rights© 2013 Elsevier B.V.en
dc.rights.accessRightsopen accessen
dc.subject.ecienciaMaterialeses
dc.subject.otherAerosol processingen
dc.subject.otherNanoparticlesen
dc.subject.otherUp-conversionen
dc.subject.otherDecay timeen
dc.subject.otherY₂O₃es
dc.titleStructural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol routeen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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