Founded in 1987, Bimonthly
Supervisor:Jiangxi University Of Science And Technology
Sponsored by:Jiangxi University Of Science And Technology
Jiangxi Nonferrous Metals Society
ISSN:1674-9669
CN:36-1311/TF
CODEN YJKYA9
LIAO Jin-sheng, LIU Shao-hua, ZHOU Dan, HUANG Rong, ZHOU Quan-hui. Synthesis and optical properties of La2O3:Eu3+ red phosphor[J]. Nonferrous Metals Science and Engineering, 2013, 4(6): 19-23. DOI: 10.13264/j.cnki.ysjskx.2013.06.008
Citation: LIAO Jin-sheng, LIU Shao-hua, ZHOU Dan, HUANG Rong, ZHOU Quan-hui. Synthesis and optical properties of La2O3:Eu3+ red phosphor[J]. Nonferrous Metals Science and Engineering, 2013, 4(6): 19-23. DOI: 10.13264/j.cnki.ysjskx.2013.06.008

Synthesis and optical properties of La2O3:Eu3+ red phosphor

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  • Received Date: June 30, 2013
  • Published Date: December 30, 2013
  • A stable La2O3:Eu3+ red phosphor is prepared by composite precipitation method. The influences of the calcination temperature and the concentration of Eu3+ on the luminescent properties are studied. The crystal structure, particle size and morphology of the phosphor are characterized by X -Ray Powder Diffraction (XRD) and Scanning Electron Microscope (SEM) techniques. The luminescent properties of phosphor are measured by emission spectra, excitation spectra and decay curve. The results indicate that the as-prepared samples are La2O3:Eu3+ crystals of hexagonal phase by annealing at 900 ℃. The diameter of the particles of 5 % La2O3:Eu3+ is about 15 μm. The maximum emission and excitation wavelength are at 626 nm and 396 nm, respectively. The band at 596 nm and 626 nm are corresponding to 5D07F1 and 5D07F2 transition of Eu3+ ions in emission spectrum. The fluorescence lifetime of La2O3:Eu3+ phosphor is 0.754 ms.
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