Green Emitting Phosphor M3（PO4）2∶Ce, Tb （M=Mg, Ca, Sr, Ba） Prepared by Co-Precipitation Method
来源期刊：Journal of Rare Earths2007年第S1期
论文作者：董丽敏 张耀明 韩志东 吴泽 张显友
文章页码：290 - 293
摘 要：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.
董丽敏，张耀明，韩志东，吴泽，张显友
摘 要：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.
关键词：
