Europium-doped yttrium oxide phosphors were obtained by firing precursors prepared by urea precipitation in ethanol and ethylenediamine. The precipitation in non-aqueous solution was carried out in an autoclave at 150ºC to allow the decomposition of urea. The photoluminescent intensities of the phosphors prepared in ethanol and ethylenediamine increased by about 30 % compared to that of the phosphor prepared by the conventional urea homogeneous precipitation in aqueous solution. Amorphous carbonates and amorphous hydroxides/carbonates mixtures were identified as precursors from ethanol and ethylenediamine, respectively. The morphology and particle size were studied by SEM and dynamic laser scattering method.
Revised: August 30, 2004 |
Published: August 2, 2004
Citation
Sun Y., L. Qi, M. Lee, B.I. Lee, B.I. Lee, W.D. Samuels, and G.J. Exarhos. 2004.Photoluminescent Properties of Y2O3:Eu3+ Phosphors Prepared via Urea Precipitation in Non-Aqueous Solution.Journal of Luminescence 109, no. 2:85-91.PNNL-SA-39970.