Luminescence Properties of Spherical Phosphors SrSiO3:Eu3+
Spherical SiO2 particles have been successfully coated with SrSiO3:Eu3+ phosphor layers through a sol-gel process. The resulted core-shell phosphors were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence spectra as well as kinetic decays. The XRD results demonstrate that the SrSiO3:Eu3+ layers begin to crystallize on the SiO2 particles after annealing at 1000oC. The obtained core-shell phosphors have perfect spherical shape. The Eu3+ shows a strong photoluminescence (PL) (dominated by 5D0-7F2 red emission at 612 nm).
Wei Pan and Jianghong Gong
X. M. Han, J. Lin, M. Yu, C.K. Lin, X. W. Qi, Z. Y. Yu, X. Q. Wang, "Luminescence Properties of Spherical Phosphors SrSiO3:Eu3+", Key Engineering Materials, Vols. 336-338, pp. 619-621, 2007