Ba_(1-x-1.5y)Sr_xMoO_4:ySm^(3+)红色荧光粉的水热法合成及发光性能  

Hydrothermal Synthesis and Luminescent Properties of Ba_(1-x-1.5y)Sr_xMoO_4:ySm^(3+) Red Fluorescent Materials

作　　者：李慧[1] 梁亚琴[1] 毛晓明[1] 

机构地区：[1]长治学院化学系,山西长治046011

出　　处：《过程工程学报》2017年第4期839-844,共6页The Chinese Journal of Process Engineering

基　　金：山西省青年科技研究基金资助项目(编号:201601D202022)

摘　　要：采用水热法合成Ba_(1-x-1.5y)Sr_xMoO_4:ySm^(3+)系列红色荧光材料,对其进行了表征,考察了Ba^(2+)和Sr^(2+)含量及Sm^(3+)掺杂量、反应温度和pH值对材料相结构、荧光性能和微观形貌的影响.结果表明,pH=7、反应温度130℃条件下合成的Ba_(0.843)Sr_(0.15)MoO_4:0.005Sm^(3+)具有最佳的发光性能和显微形貌,在波长405 nm的荧光激发下,粉体的发射光谱呈现三峰发射,分别位于564,600,648 nm,分别来自Sm^(3+)的~4G_(5/2)→~6H_(5/2),~4G_(5/2)→~6H_(7/2)和~4G_(5/2)→~6H_(9/2)的电子跃迁,其中以~4G_(5/2)→~6H_(9/2)的跃迁发射强度最强.Abstract： A series of Ba1-x-1.5ySrxMoO4：ySm^3＋ red fluorescent materials were synthesized by hydrothermal method and its properties were characterized. The influences of Ba^2＋ and Sr^2＋ contents, Sm^3＋ doping content, reaction temperature and pH value on phase structure, fluorescence properties and micromorphology were studied, respectively. The results showed that the sample of Ba0.843Sro.15MoO4：O.OO5Sm3＋ has better luminous performance and micromorphology at pH=7 and reaction temperature 130 ℃. Under 405 nm excitation, the emission spectra of phosphors is composed of three broad bands peaked at 564, 600 and 648 rim, which are resulted from the transition of 4G5/2→6H5/2, 4G5/2→6H7/2, 4Gs/2→6H9/2, and the relative intensity of 4Gs/2→6H9/2 is more intensive.

关 键 词：Ba1-x-1.5ySrxMoO4:ySm^3+ 水热法 红色荧光粉 

分 类 号：O614.3[理学—无机化学]