亚微米级红色荧光粉NaEu(MoO4)2的水热合成及光谱特性  

Hydrothermal Synthesis and Spectral Properties of NaEu(MoO_4)_2 Red Submicro-Phosphors

作　　者：张艳[1] 宫慧丽[1] 石士考[1] 周济[2] 叶建平[3] 

机构地区：[1]河北师范大学化学与材料科学学院,石家庄050016 [2]清华大学材料科学与工程系,北京100084 [3]中国科学院化学研究所光化学重点实验室,北京100080

出　　处：《无机化学学报》2009年第3期563-566,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.50472020);河北省自然科学基金(No.08B012);河北师大博士基金(No.L2006B15)资助项目

摘　　要：The hyperfine red phosphors,NaEu(MoO4)2,were synthesized by hydrothermal and subsequent heat-treatment processes.The NaEu(MoO4)2 phosphors show regular elliptical morphologies,and the particle sizes of 0.25～0.3 μm.The excitation spectra located at short-wavelength UV region belong to the interweave broad charge transfer bands of Mo6+-O2-and Eu3+-O2-,and the three sharp lines around 395 nm,465 nm and 535 nm are ascribed to the Eu3+ 4f excitation transitions.All of the samples can be excited with near-UV 395 nm light and exhibit the characteristic red emission of Eu3+ 5D0→7F2transition.The relative red emission intensities of the optimum phosphors reach two-fold as compared with that of the commercial phosphors.The submicro-phosphors may be applied as red phosphors for white light emitting diodes.The hyperfine red phosphors, NaEu （MoO4）2, were synthesized by hydrothermal and subsequent heattreatment processes. The NaEu （MoO4）2 phosphors show regular elliptical morphologies, and the particle sizes of 0.25-0.3μm. The excitation spectra located at short-wavelength UV region belong to the interweave broad charge transfer bands of Mo^6＋-O^2- and Eu^3＋-O^2-, and the three sharp lines around 395 nm, 465 nm and 535 nm are ascribed to the Eu3＋ 4f excitation transitions. All of the samples can be excited with near-UV 395 nm light and exhibit the characteristic red emission of Eu^3＋ 5D0→^7F2transition. The relative red emission intensities of the optimum phosphors reach two-fold as compared with that of the commercial phosphors. The submicro-phosphors may be applied as red phosphors for white light emitting diodes.

关 键 词：荧光粉 Eu3+ 水热合成 钼酸盐 

分 类 号：O612.1[理学—无机化学] O614.6[理学—化学]