利用一种简单有效的水热-后煅烧方法合成了Sr5(PO4)3Cl∶Ce3+磷光体。实验结果表明, 通过调节水热条件的溶剂类型和组成可以得到球形/橄榄球形Sr5(PO4)3Cl∶Ce3+磷光体。橄榄球形Sr5(PO4)3Cl∶Ce3+磷光体的内在生长方向为［001］, 空间群为P63/m。更为重要的是, 可以利用后煅烧方法来研究Sr5(PO4)3Cl∶Ce3+磷光体的光学性能, 发光强度的主要影响因素包括Ce3+含量、煅烧温度、H2O-三乙醇胺体系中的体积比。Sr5(PO4)3Cl∶Ce3+磷光体的发光谱以及CIE色温图表明, 该产物具有蓝光发射的特性。

A simple and efficacious hydrothermal and post-annealing method has been developed to prepare Sr5(PO4)3Cl∶Ce3+ phosphors. The experimental results reveal that modulating the solvent species as well as the solvent composition (i.e. solvent effect) can give rise to Sr5(PO4)3Cl∶Ce3+ phosphors with granular/rugby-like shapes and various sizes under hydrothermal conditions. The driving force for rugby-like Sr5(PO4)3Cl∶Ce3+ phosphor growing along ［001］ direction originates from its intrinsic symmetry of P63/m. More importantly, post-annealing method was further carried out to investigate the luminescent properties of Sr5(PO4)3Cl∶Ce3+ phosphors. Ce3+ doping content, calcination temperature, volume ratio in H2O-triethyleneamine and two different synthetic methods play important roles in determining the emission intensity. The PL, PLE spectra and CIE chromaticity coordinates illustrate the excellent blue emission feature of Sr5(PO4)3Cl∶Ce3+ phosphors.