Bulletin of the Korean Chemical Society

  • 제35권11호
  • /
  • Pages.3319-3325
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  • 2014
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Doping-Concentration and Annealing Effects on Photoluminescence Profile of Eu(III)-doped CeO2 nanorods

  • Lee, Juheon (Department of Chemistry, Yeungnam University) ;
  • Park, Yohan (Department of Chemistry, Yeungnam University) ;
  • Joo, Sang Woo (School of Mechanical Engineering, Yeungnam University) ;
  • Sohn, Youngku (Department of Chemistry, Yeungnam University)
  • 투고 : 2014.07.05
  • 심사 : 2014.07.29
  • 발행 : 2014.11.20
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초록

Eu(III)-doped $CeO_2$ nanorods were prepared by a co-precipitation method at room temperature, and their photoluminescence profiles were examined with different Eu(III)-doping concentrations and thermal annealing temperatures. Scanning electron microscopy, X-ray diffraction crystallography and UV-Vis absorption spectroscopy were employed to examine the morphology, crystal structure and photon absorption profiles of the nanorods, respectively. Additionally, their 2D and 3D-photoluminescence profile maps were obtained to fully understand the photoluminescence mechanism. We found that the magnetic dipole $^5D_0{\rightarrow}^7F_1$ and the electric dipole $^5D_0{\rightarrow}^7F_2$ transitions of Eu(III) were highly dependent on the doping concentration, annealing temperature and excitation wavelength, which was explained by the presence of different Eu(III)-doping sites (with and without an inversion center) in the $CeO_2$ host with a cubic crystal structure.

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피인용 문헌

  1. Fabricated CeO2 nanopowders as a novel sensing platform for advanced forensic, electrochemical and photocatalytic applications vol.7, pp.8, 2017, https://doi.org/10.1007/s13204-017-0611-x