Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15231
Title: Microstructure and photoluminescent properties of Y2O 3:Eu3+ phosphors synthesised by precipitation and combustion methods
Authors: Chen, ZM
Jiang, SX 
Guo, RH
Xin, BJ
Miao, DG
Keywords: Combustion
Luminescent properties
Precipitation
Issue Date: 2014
Publisher: Maney Publishing
Source: Materials technology, 2014, v. 29, no. 4, p. 198-203 How to cite?
Journal: Materials Technology 
Abstract: Y2O3:Eu3+ phosphors were prepared by NH4HCO3 based precipitation method and C2H 5NO2-nitrate solution combustion synthesis method respectively. The phosphors were systematically investigated by field emission scanning electron microscope (SEM), X-ray diffractometer (XRD), scanning electron microscope (XPS) and fluorescence spectrometer. Luminescent properties of Y2O3:Eu3+ phosphors synthesised by two different methods were also compared. The results show that Y2O 3:Eu3+ phosphor prepared by precipitation technique is spherical with nanometre particle size from 55 to 60 nm, whereas the one synthesised by combustion technique exhibits extensive sheet porosity structure. X-ray diffraction spectra indicate that both of the samples have pure cubic phases and the crystallinity of phosphor synthesised by combustion technique is improved. The main emission peaks of Y2O3:Eu3+ phosphors at 613 nm are due to the 5D0-7F 2 transition of Eu3+ ions, and phosphor obtained by precipitation method shows higher emission intensity. The results reveal that Y2O3:Eu3+ phosphor with spherical particle shape can exhibit good luminescent properties and morphology of Y 2O3:Eu3+ phosphor is a more crucial factor than crystal structure to the enhanced luminescence.
URI: http://hdl.handle.net/10397/15231
ISSN: 1066-7857
DOI: 10.1179/1753555713Y.0000000123
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