Photoluminescence properties of praseodymium doped cerium oxide nanoparticles

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Cabral, A. C.
Cavalcante, L. S.
Deus, R. C.
Longo, Elson [UNESP]
Simões, A. Z.
Moura, F.

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The structural and photoluminescent properties at room temperature of CeO2 nanoparticles synthesized by a Microwave-Assisted Hydrothermal Method (MAH) under different praseodymium contents was undertaken. X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), UV-vis Spectroscopy (UV-vis), Fourier Transform Raman (FT-Raman) and Photoluminescence (PL) measurements were employed. XRD revealed that the nanoparticles are free of secondary phases and crystallize in the cubic structure while FT-Raman revealed a typical scattering mode of fluorite type. The UV/vis absorption spectroscopy suggested the presence of intermediate energy levels in the band gap of structurally ordered powders. The most intense PL emission was obtained for nanoparticles which represent a lower particle size. © 2013 Elsevier Ltd and Techna Group S.r.l.



A. Ceramics, B. Chemical syntheses, B. Powder metallurgy, C. X-ray diffraction

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Ceramics International.