Doping-Concentration and Annealing Effects on Photoluminescence Profile of Eu(III)-doped CeO2 nanorods
- Doping-Concentration and Annealing Effects on Photoluminescence Profile of Eu(III)-doped CeO2 nanorods
- 손영구; 이주헌; 박요한; 주상우
- SM3+ THIN-FILMS; LUMINESCENT PROPERTIES; COMBUSTION SYNTHESIS; OPTICAL-PROPERTIES; ENERGY-TRANSFER; NANOPARTICLES; PHOSPHOR; EU3+; NANOSTRUCTURES; MECHANISM
- Issue Date
- WILEY-V C H VERLAG GMBH
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.35, no.11, pp.3319 - 3325
- Eu(III)-doped CeO2 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 D-5(0) -> F-7(1) and the electric dipole D-5(0) -> F-7(2) transitions of Eu(111) 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 CeO2 host with a cubic crystal structure.
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