Title of article
Photoluminescence properties of praseodymium doped cerium oxide nanocrystals
Author/Authors
A.C. Cabral، نويسنده , , L.S. Cavalcante، نويسنده , , R.C. Deus، نويسنده , , E. Longo، نويسنده , , A.Z. Simoes، نويسنده , , F. Moura، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
9
From page
4445
To page
4453
Abstract
The structure and photoluminescence (PL) properties of CeO2 nanocrystals synthesized by the microwave-assisted hydrothermal (MAH) method with different praseodymium (Pr3+) ions contents were performed. X-ray diffraction (XRD), transmission electron microscopy (TEM), diffuse reflectance ultraviolet-visible (UV-vis), Fourier transform Raman (FT-Raman) spectroscopies and PL measurements at room temperature were employed. XRD patterns indicated that the nanocrystals 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 spectra suggested the presence of intermediate energy levels in the band gap of these nanocrystals. The most intense PL emission was obtained for CeO2 nanocrystals doped with 1.6% of Pr3+ ions and smaller particle size.
Keywords
C. X-ray diffraction , B. Powder metallurgy , B. Chemical syntheses , A. Ceramics
Journal title
Ceramics International
Serial Year
2014
Journal title
Ceramics International
Record number
1276045
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