双钙钛矿LaM_2VO_6:Eu^(3+)(M=Mg,Ca,Sr,Ba)荧光纳米材料的制备及发光性能的研究  

Synthesis and luminescence properties of double perovskite LaM_2VO_6:Eu^(3+)(M=Mg,Ca,Sr,Ba)nanophosphor

作　　者：曾慧慧[1] 姜雯雯[2] 陈林[1] 刘芳[1] 王献忠[1] 

机构地区：[1]萍乡学院,江西萍乡337055 [2]江西科技学院,江西南昌338000

出　　处：《南昌大学学报（理科版）》2016年第1期51-55,共5页Journal of Nanchang University(Natural Science)

基　　金：江西省教育厅科学技术研究项目(GJJ4787)

摘　　要：采用凝胶-燃烧法合成了LaM_2VO_6:Eu^(3+)(M=Mg,Ca,Sr,Ba)系列红色纳米荧光粉。通过X射线衍射、扫描电镜及荧光光谱等检测方法,研究了不同碱土金属离子掺杂Eu^(3+)荧光粉基质的晶体结构、形貌及其光致发光性能。结果表明:采用凝胶-燃烧法制备的LaM_2VO_6:Eu^(3+)(M=Mg,Ca,Sr,Ba)红色荧光粉结晶良好、晶相单一且具有良好的发光性能;其中掺Mg基质LaMg_2VO_6:Eu^(3+)荧光粉的发光性能最好。当引燃温度为800℃,保温时间1h,Eu^(3+)的掺杂量x=0.11时所得荧光材料发光效果最优。The red nano-phosphors LaM_2VO_6：Eu^（3＋）（M=Mg,Ca,Sr,Ba）were synthesized via the sol-gelcombustion synthesis method.The crystal structure,morphology,and photoluminescent properties with different matrix ions were investigated by XRD,SEM and fluorescence spectra.The results showed that the red emitting phosphors LaM_2VO_6：Eu^（3＋）（M=Mg,Ca,Sr,Ba）synthesized at 800 ℃ remained 1hand x=0.11 exhibited the strongest red emission under 274 nm excitation.Among these samples,the Mg2＋-doped LaMg_2VO_6：Eu^（3＋）phosphor displayed a most luminescence properties.

关 键 词：双钙钛矿 凝胶-燃烧法 LaM2VO6:Eu3+ 纳米荧光粉 

分 类 号：O482.31[理学—固体物理]