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Journal of Materials Science
Erschienen in: Journal of Materials Science 6/2017

28.11.2016 | Original Paper

Controlled hydrothermal synthesis and luminescent properties of Y2WO6:Eu3+ nanophosphors for light-emitting diodes

verfasst von: Jingang Li, Zheyi Wu, Xiaoyu Sun, Xianwen Zhang, Rucheng Dai, Jian Zuo, Zhi Zhao

Erschienen in: Journal of Materials Science | Ausgabe 6/2017

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Abstract

In this paper, Eu3+-doped yttrium tungstate (Y2WO6) nanophosphors with different morphologies have been synthesized by a hydrothermal method with the assistance of cetyltrimethyl ammonium bromide. X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), and photoluminescence spectroscopy (PL) were used to characterize the products. The pH value of the starting solution plays a crucial role in the structures and morphologies of the samples. When the precursors synthesized under alkaline condition are annealed at 1100 °C in the air, the pure monoclinic Y2WO6 phase can be obtained. The results of HRTEM and SAED are consistent with those of the XRD patterns, confirming the high crystallinity of the products. A detailed study of the optical properties, including the UV–Vis diffuse reflection spectra, the excitation and emission spectra, CIE coordinate, and color purity of Y2WO6:Eu3+ nanophosphors with different doping concentrations, are presented here. The critical distance R c and energy transfer mechanism for the concentration quenching of Eu3+ ions are discussed in detail. In addition, the decay time and the thermal stability of the samples have been also investigated elaborately. The PL properties of the as-synthesized materials indicate promising applications in UV-pumped red light-emitting diodes.
Vorheriger Artikel Polysaccharides/mesoporous silica nanoparticles hybrid composite hydrogel beads for sustained drug delivery
Nächster Artikel Hybrid materials of graphene anchored with CoFe2O4 for the anode in sodium-ion batteries

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Metadaten
Titel
Controlled hydrothermal synthesis and luminescent properties of Y2WO6:Eu3+ nanophosphors for light-emitting diodes
verfasst von
Jingang Li
Zheyi Wu
Xiaoyu Sun
Xianwen Zhang
Rucheng Dai
Jian Zuo
Zhi Zhao
Publikationsdatum
28.11.2016
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 6/2017
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-0598-9

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