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The M3-3x(PO4)2∶2xCe, xTb(M=Mg, Ca, Sr, Ba) phosphors were prepared by coprecipitation in this paper. Their phase structures, morphologies and luminescent properties were investigated by X-ray diffractometer, field emission scanning electron microscopy and fluorospectrophotometer. The results indicate that the Ce3+ and Tb3+ enteres the host lattice because the XRD patterns of alkaline earth phosphate show no impurity phase, the SEM shows the spherical particles with an average size about 1 μm. The emission and excitation spectra are similar to rare earth phosphate. Concentration quenching of the Sr3(PO4)2∶Ce, Tb emission intensity was not observed even when the Tb3+ increases to 0.05, while the maximum emission intensity appears when x=0.04 in M3-3x(PO4)2∶2xCe, xTb(M=Ca, Ba) emission spectrum.
Their phase structures, morphologies and luminescent properties were investigated by X-ray diffractometer, field emission. The M3-3x (PO4) 2: 2xCe, xTb (M = Mg, Ca, Sr, Ba) phosphors were prepared by coprecipitation in this paper. scanning electron microscopy and fluorospectrophotometer. The results indicate that the Ce3 + and Tb3 + enteres the host lattice because the XRD patterns of alkaline earth phosphate show no impurity phase, the SEM shows the spherical particles with an average size about 1 μm. Concentration quenching of the Sr3 (PO4) 2 Ce, Tb emission intensity was not observed even when the Tb3 + increases to 0.05, while the maximum emission intensity appears when x = 0.04 in M3-3x (PO4) 2: 2xCe, xTb (M = Ca, Ba) emission spectrum.