利用水热-后煅烧方法制备Sr_5(PO_4)_3Cl∶Ce^(3+)磷光体(英文)

Synthesis of Sr_5(PO_4)_3Cl∶Ce^(3+) Phosphors by Hydrothermal and Post-annealing Method

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.