两步法制备Ca_3(PO_4)_2:Eu^(3+)荧光粉及其发光特性研究

Two- step Preparation and Luminescence Properties of Ca_3(PO_4)_2: Eu^(3+) Phosphors

探索Ca3(PO4)2:Eu3+荧光材料的可控合成,并研究其发光特性,对于提高磷资源应用价值具有重要意义。利用水热法结合高温烧结制备了Ca3(PO4)2:Eu3+发光材料,并研究了其发光性质。通过X射线衍射、扫描电子显微镜和荧光光谱对合成样品的相结构和性能进行了表征。结果显示,当采用250nm作为激发波长时观察到强的窄线红光发射,应该属于稀土Eu3+离子的特征发射峰。通过延长水热反应时间,可以提高样品的结晶性,从而增强荧光发射强度。

Controllable synthesis and luminescence properties of Ca3（ PO4）2： Eu3 ＋materials are effectively explored,which would be significant to enhance the application value of phosphorus resources. In this work,Ca3（ PO4）2： Eu3 ＋material was synthesized by a simple hydrothermal process combined with an annealing treatment. X- ray powder diffraction（ XRD）,scanning electron microscopy（ SEM）,and photoluminescence spectroscopy（ PL） were utilized to characterize the structure,shape and fluorescence performance of the powders,which indicated rhombohedral phase Ca3（ PO4）2. Ca3（ PO4）2： Eu3 ＋powders show red emissions with several sharp peaks corresponding to the intrinsic 4f→4f transitions of Eu3 ＋under 250 nm excitation,which exhibit gradually an increasing intensity of fluorescence emission by extending the hydrothermal reaction time.