Uniform orange-to-red spherical phosphors of Sr2P2O7:Ce3+,
Mn2+ have been synthesized by the co-precipitation method
and characterized by X-ray powder diffraction, scanning electron
microscopy, and photoluminescence spectroscopy. The
results indicate that the morphology, size, and photoluminescence
properties of Sr2P2O7:Ce3+, Mn2+ phosphors can be
effectively controlled by the reaction and the sintering temperatures.
Energy transfer from Ce3+ to Mn2+ in Sr2P2O7 phosphor
was observed from photoluminescence spectra of
P2O7:Mn2+, and Sr2P2O7:Ce3+, Mn2+.
Moreover, based on a self-assembly process, a possible formation
mechanism for the spherical phosphors is proposed. The
uniform phosphor spheres obtained in this work exhibit great
potential for high-resolution display devices such as light emitting