YAG：Ce^3＋,Pr^3＋荧光粉的制备和光谱特性研究  

Study on Synthesis and Spectral Properties of YAG:Ce^(3+),Pr^(3+) Phosphors

作　　者：周禾丰[1] 侯建新[1] 贾明理[1] 王华[1] 徐阳[1] 卫芳芳[1] Zhou, He-Feng[1]; Hou, Jian-Xin[1]; Jia, Ming-Li[1]; Wang, Hua[1]; Xu, Yang[1]; Wei, Fang-Fang[1]

机构地区：[1]太原理工大学材料科学与工程学院,新材料界面与工程省部共建教育部重点实验室,太原030024

出　　处：《人工晶体学报》2009年第3期629-632,共4页Journal of Synthetic Crystals

基　　金：国家自然科学基金(No.20671068);教育部科学技术重点项目(No.207015);山西省科技攻关项目(No.2006031121);太原市科技局明星专项(No.07020401);山西省自然科学基金项目(No.2007011066)

摘　　要：以稀土氧化物为原料,采用高温固相反应法合成了Ce3+,Pr3+共激活的钇铝石榴石蓝光转换材料。通过X射线粉末衍射和激发、发射光谱的测试进行表征,研究了掺杂Ce3+,Pr3+的钇铝石榴石荧光粉的晶体结构和光谱特性。结果表明:产物为立方晶系的钇铝石榴石结构,可被蓝光有效激发,并且通过Ce3+,Pr3+之间的能量传递激发镨离子发光,使荧光粉的红光成分有所增加,从而有望降低白光LED的色温,提高其显色指数。Yttrium aluminum garnets （YAG） activated by Ce^3＋,Pr^3＋ were synthesized by the solid- state method at high temperature using rar earth oxides as raw materials. The crystal structures and luminescence properties of the products are studied by XRD and emission and excitation spectra. The results indicate that the products were YAG crystals of cubic system, and they can excited by blue light effectively. Energy transfer from Ce^3＋ to Pr^3＋ in YAG： （Ce^3＋, Pr^3＋） excited Pr^3＋, and emission intensity in red spectral region are observed. This is hopeful to decrease the correlated color temperature and improve the color-rendering index of white LEDs.

关 键 词：钇铝石榴石 白光LED 显色指数 发射光谱 激发光谱 

分 类 号：TQ133.3[化学工程—无机化工]