高能球磨与反应烧结合成YAG∶Ce^(3+)荧光粉的研究

Synthesis of YAG∶Ce^(3+) Phosphor by High Energy Milling and Reactive Sintering

采用高能球磨和反应烧结相结合的方法在1300℃、碳还原气氛下合成了YAG∶Ce3+荧光粉,通过X射线衍射分析(XRD)、场发射扫描电子显微镜图谱(FESEM)、荧光光谱(Ex,Em)研究了反应时间、Ce3+的掺杂量对荧光粉性能的影响。研究结果表明,当反应时间为6h时获得的产物为单一的YAG相,颗粒分布均匀且接近球形;当掺杂Ce3+的摩尔分数x=0.06时,荧光粉的相对发射强度最大。

YAG ： Ce^3＋ phosphors are prepared by high energy ball milling and solid-state reaction m reoucing atmosphere at 1300℃. The influences of reaction time and cerium ion doping concentration on the performance of the phosphors are studied by X-ray diffraction（XRD）, field-emitting scanning electron microscopy （FESEM） and fluorescence spectra. The results indicate that the products are composed of single YAG phases when reaction time is 6 hours, and the particles are uniform and closely spherical. As molar fraction x of cerium ion is 0. 06, relative emission intensity of phosphor reaches its maximum.