Sb^(3+)掺杂的YAG:Ce荧光粉的合成与发光性能研究

Synthesis and luminescent properties of YAG:Ce phosphor doped with Sb^(3+)

通过高温固相法制备了白光LED用Sb3+掺杂的Y1.94-yGdSbyAl5O12:0.06Ce荧光粉,使用荧光分光光度计研究了样品的发光性能,并采用紫外-可见-近红外光谱分析系统分析了所制荧光粉的封装性能。结果表明,Y1.94-yGdSbyAl5O12:0.06Ce荧光粉为立方晶系,其发射中心波长为550 nm,Sb3+掺杂有助于提高YAG:Ce的发光强度。将合成的Y1.92GdSb0.02Al5O12:0.06Ce(CL-Y-550)荧光粉封装成白光LED,其平均色温为5 376 K,属于冷白;平均显色指数为81.2,达到了基本的应用水平。

Yellow phosphor Yi.94.yGdSbyAlsO12：0.06Ce doped with Sb3＋ for white LED lamps was synthesized by high temperature solid state reaction method. The luminescent properties of the prepared phosphor were investigated by fluorescence spectrophotometer, while the packaging performance of it was analyzed by Sync-Skan speetrophotocolorimeter. The results show that crystal structure of phosphor Yt.94-yGdSbyAlsO12：0.06Ce is cubic crystal system, and the launch center wavelength is 550 nm. Sb3＋ doping is helpful to improve PL intensity of YAG：Ce. The average color temperature of the white LED prepared with CL-Y-550 is 5 376 K, which belong to cold white, and the average color rendering index is 81.2, which is found to be available in LED chips.