Nanocrystalline europium doped yttria was synthesized using a chemical vapor technique. The powder was characterized by x-ray diffraction, transmission electron microscopy, and ultraviolet spectroscopy. For the first time it was possible to obtain single phase Y2O3:Eu nanoparticles crystallized in the cubic structure with an average particle size of only 10 nm. The reflection, excitation, and emission spectra were studied. The nanoparticles show blue shifted absorption bands with respect to coarse grained material.

Articles you may be interested inPreparation, characterization, and optical properties of nano-and submicron-sized Y 2 O 3 : Eu 3 + phosphors

For the first time Y2O3 has been deposited in the cubic equilibrium structure with a small particle size of 10 nm in a single processing step; the Figure shows the XRD patterns with Bragg peaks consistent with the structure. This communication shows that this good crystalline quality makes Y2O3 a promising host material for doped nanocrystalline phosphorus with high efficiency in lighting systems.

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