铒镱双掺钇钪铝石榴石纳米粉体的制备与发光性质  

Preparation and Luminescence Property of Er,Yb:YSAG Nano-powder

作　　者：林海[1] 朱忠丽[2] 

机构地区：[1]长春理工大学材料科学与工程学院,长春130022 [2]长春理工大学化学与环境工程学院,长春130022

出　　处：《硅酸盐学报》2016年第6期847-852,共6页Journal of The Chinese Ceramic Society

基　　金：吉林省科技发展计划(20120223);长春市科技发展计划(14KP017)资助

摘　　要：以柠檬酸为燃烧剂,采用柠檬酸燃烧法制备Er,Yb:YSAG纳米粉体。通过对不同煅烧温度下样品的X射线衍射和扫描电子显微镜分析,确定最佳煅烧温度为900℃。测试了室温条件下样品的激发和发射光谱。结果表明:在381 nm处激发峰最强,对应Er^(3+)的~4I_(15/2)→~2H_(9/2)能级跃迁;最强发射峰在1 547 nm处,对应Er^(3+)的~4I_(13/2)→~4I_(15/2)能级跃迁。测试了样品的上转换荧光光谱,研究了Er^(3+)和Yb^(3+)掺杂量对样品发光强度的影响,得到了Er^(3+)和Yb^(3+)的最佳掺杂量分别为3%和9%,讨论了绿光、红光的发光跃迁机制,验证样品发光为双光子过程。Er,Yb：YSAG nano-powder was synthesized by a citrate combustion method. The Er,Yb：YSAG powder was characterized by X-ray diffraction and scanning electron microscopy. The results show that the optimum calcination temperature is 900℃. The features of excitation and emission spectrum of Er,Yb：YSAG nano-material at room temperature were examined. It is indicated that a most intense excitation peak is centered at 381 nm, corresponding to the 4I15/2→2H9/2 level transition of Er3＋. A most intense emission peak is centered at 1 547 rim, corresponding to the 4113/2-→4115/2 level transition of Er3＋. The up-conversion fluorescence spectrum was analyzed. The impact of doping content of Er3＋ and Yb3＋ in the samples on the luminous intensity was studied. The doping contents of Er3＋ and Yb3＋ are 3% and 9%, respectively. The green and red light transition mechanism was discussed. It is proposed that luminescence process should be a double photon process.

关 键 词：柠檬酸燃烧法 激发发射光谱 上转换荧光光谱 

分 类 号：TQ133.3[化学工程—无机化工]