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Sol-gel growth of Gd2MoO6:Eu3+ nanocrystalline layers on SiO2 spheres (SiO2@Gd2MoO6:Eu3+) and their luminescent properties
Li,Guangzhi1,2; Wang,Zhenling2; Quan,Zewei2; Liu,Xiaoming2; Yu,Min1; Wang,Rongshun1; Lin,Jun2
2006-08-15
Source PublicationSurface Science
ISSN00396028
Volume600Issue:16Pages:3321-3326
AbstractSiO@GdMoO:Eu core-shell phosphors were prepared by the sol-gel process. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectra (EDS), transmission electron microscopy (TEM), photoluminescence (PL) spectra as well as kinetic decays were used to characterize the resulting SiO@GdMoO:Eu core-shell phosphors. The XRD results demonstrate that the GdMoO:Eu layers on the SiO spheres begin to crystallize after annealing at 600 °C and the crystallinity increases with raising the annealing temperature. The obtained core-shell phosphors have a near perfect spherical shape with narrow size distribution (average size ca. 600 nm), are not agglomerated, and have a smooth surface. The thickness of the GdMoO:Eu shells on the SiO cores could be easily tailored by varying the number of deposition cycles (50 nm for four deposition cycles). The Eu shows a strong PL luminescence (dominated by D-F red emission at 613 nm) under the excitation of 307 nm UV light. The PL intensity of Eu increases with increasing the annealing temperature and the number of coating cycles. © 2006 Elsevier B.V. All rights reserved.
KeywordCore-shell Gd2MoO6:Eu3+ Luminescent properties SiO2 Sol-gel process
DOI10.1016/j.susc.2006.06.018
URLView the original
Language英语
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Document TypeJournal article
CollectionPersonal research not belonging to the institution
Affiliation1.Department of Chemistry,Northeast Normal University,,China
2.Key laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,,China
Recommended Citation
GB/T 7714
Li,Guangzhi,Wang,Zhenling,Quan,Zewei,et al. Sol-gel growth of Gd2MoO6:Eu3+ nanocrystalline layers on SiO2 spheres (SiO2@Gd2MoO6:Eu3+) and their luminescent properties[J]. Surface Science,2006,600(16):3321-3326.
APA Li,Guangzhi.,Wang,Zhenling.,Quan,Zewei.,Liu,Xiaoming.,Yu,Min.,...&Lin,Jun.(2006).Sol-gel growth of Gd2MoO6:Eu3+ nanocrystalline layers on SiO2 spheres (SiO2@Gd2MoO6:Eu3+) and their luminescent properties.Surface Science,600(16),3321-3326.
MLA Li,Guangzhi,et al."Sol-gel growth of Gd2MoO6:Eu3+ nanocrystalline layers on SiO2 spheres (SiO2@Gd2MoO6:Eu3+) and their luminescent properties".Surface Science 600.16(2006):3321-3326.
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