Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 177, Issue 10, Pages 712-716Publisher
ELSEVIER
DOI: 10.1016/j.mseb.2011.10.010
Keywords
ZrO2; Nanopowders; Combustion synthesis; PL/PLE; LFZ fibres
Funding
- FCT [PTDC/CTM/66195/2006, PTDC/CTM/100756/2008, SFRH/BD/80357/2011, SFRH/BD/45774/2008, SFRH/BD/68295/2010]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/68295/2010, SFRH/BD/80357/2011] Funding Source: FCT
Ask authors/readers for more resources
Zirconia nanocrystals doped with europium ions were developed envisaging optical applications. The nanostructures were produced using zirconyl nitrate (ZrO(NO3)(2)center dot H2O) and europium nitrate (Eu(NO3)(3)center dot 5H(2)O) as cation precursors, and urea (C2H5NO2) as the fuel, by the combustion synthesis process. The lanthanide-doped nanostructures were characterized by X-ray diffraction, transmission electron microscopy, Raman spectroscopy and photoluminescence. X-ray diffraction revealed the presence of tetragonal and monoclinic crystalline ZrO2 phases. The latter was found to be a minority phase as identified by Raman and corroborated by the observed europium luminescence when compared to the intraionic emission in crystalline tetragonal fibres grown by the laser floating zone technique. Bright red europium luminescence is observed at room temperature when the combustion synthesized zirconia powders are excited with ultraviolet radiation. The spectroscopic properties of the europium ions in the powders are ascertained by comparing combined excitation-emission measurements with those from crystalline fibres. (C) 2011 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available