蓝紫色发光材料CaMgSi2O6：Eu^2＋的凝胶-燃烧法合成及表征  

Synthesis and Characterization of Blue-purple Emitting Phosphor CaMgSi_2O_6:Eu^(2+) via Gel-combustion Method

作　　者：翟永清[1] 焦芳芳[1] 郭冰[2] 张爽[1] 牛强[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002 [2]北京师范大学环境学院,北京100875

出　　处：《稀土》2009年第1期6-9,共4页Chinese Rare Earths

基　　金：河北省教育厅博士基金资助项目(B2004205);河北大学研究基金资助项目(y2004024)

摘　　要：利用凝胶-燃烧法在弱还原气氛中合成了高亮度的蓝紫色CaMgSi2O6∶Eu2+荧光材料,研究了Eu2+不同掺杂浓度及还原温度对材料发光性能的影响,得出Eu2+的浓度为2%,还原温度为1100℃时,材料的发光性能最好。光谱分析表明,此发光体在450nm处有一个宽的发射峰,这个发射峰是由Eu2+的4f65d1→4f7跃迁所导致的,Eu2+在CaMgSi2O6∶Eu2+中形成六配位的发光中心。Blue-purple emitting material CaMgSi2O6：Eu^2＋ with high brightness was synthesized by gelcombustion method in weak reductive environment. The effect of different doped concentration of Eu and reductive temperature on the luminescent property was investigated. When the concentration of Eu^2＋ was 2%, reductive temperature 1100℃, the luminescent property of CaMgSi2O6：Eu^2＋ was the best. Spectral analysis indicates that this phosphor has a broad band emission peak at 450nm, this peak was made by the transition 4f^65d^1→4f^7 of Eu^2＋ , which was caused by the [EuO6] emitting center formed in CaMgSi2O6 host.

关 键 词：发光 CaMgSi2O6∶Eu2+ 凝胶-燃烧法 激发和发射 

分 类 号：O614.33[理学—无机化学] O482.3[理学—化学]