Eu^(3+)掺杂RE_2Sn_2O_7(RE=La,Gd,Y)纳米荧光材料的水热合成与发光性能  

Hydrothermal synthesis and optical properties of Eu^(3+) doped RE_2Sn_2O_7(RE=La, Gd, Y) nanophosphors

作　　者：杨锦瑜[1,2] 罗林[1,2] 刘雪颖[3] 苏玉长[4] 

机构地区：[1]贵州师范大学化学与材料科学学院,贵阳550001 [2]贵州省功能材料化学重点实验室,贵阳550001 [3]广西科技大学科技处,柳州545006 [4]中南大学材料科学与工程学院,长沙410083

出　　处：《中国有色金属学报》2014年第4期1036-1040,共5页The Chinese Journal of Nonferrous Metals

基　　金：贵州自然科学基金(黔科合J字[2012]2269号);广西自然科学基金(2010GXNSFB013008);贵州师范大学博士启动基金

摘　　要：采用水热法合成Eu3+掺杂的RE2Sn2O7(RE=La,Gd,Y)系列样品,并采用XRD、SEM、FT-IR和荧光光谱对合成产物的晶体结构、颗粒尺寸、形貌和光学性能进行研究。结果表明:水热合成产物为单一相烧绿石结构的RE2Sn2O7:Eu3+(RE=La,Gd,Y),产物具有由一次纳米颗粒团聚而成的不规则球状形貌。激发光谱和发射光谱测试结果表明:Eu3+掺杂RE2Sn2O7(RE=La,Gd,Y)样品可以被紫外光有效地激发,发射出Eu3+离子特征的橙红色光。与其他样品相比,Gd2Sn2O7:Eu3+样品具有最强的橙红色发光,并对其原因进行了分析。Eu3＋ doped RE2Sn2O7（RE=La, Gd, Y） nanocrystals were successfully synthesized by hydrothermal synthesis method. The crystal structure, particle size, morphology and optical properties of the as-synthesized products were investigated by XRD, SEM, FT-IR and photoluminescence spectroscopy. The results show that the as-prepared samples are of phase-pure pyrochlore structure, which displays irregular spheres shape with nanocrystals. The photoluminescence spectra of Eu3＋ doped RE2Sn2O7（RE=La, Gd, Y） nanophosphors show characteristic 4f-4f intraconfigurational transitions of Eu3＋ under ultraviolet excitation. Furthermore, Gd2Sn2O7：Eu3＋ exhibits stronger orange-red emission intensities compared with the other samples, and the possible causes were discussed.

关 键 词：RE2Sn2O7纳米荧光材料 烧绿石结构 水热合成 光学性能 

分 类 号：TB383[一般工业技术—材料科学与工程] O611.4[理学—无机化学]