微波水热法合成Eu^(3＋)掺杂的SrMoO_4红色荧光粉  

Microwave-hydrothermal synthesis of Eu^(3+)-doped SrMoO_4 red phosphor

作　　者：戴沈华[1] 刘云飞[1] 吕忆农[1] 夏丽莉[1] 闵辉华[1] 孙星[1] 

机构地区：[1]南京工业大学材料科学与工程学院,材料化学工程国家重点实验室,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2011年第2期1-5,共5页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：江苏省环保科技基金资助项目(2007022);江苏省无机及其复合材料重点实验室资助项目

摘　　要：采用微波水热的方法在中性水溶液中合成平均长6μm、中间宽4μm的梭子形SrMoO4基体材料,并研究反应物浓度和Eu3+的掺杂量(摩尔分数3.75%～30%)及EG/H2O体积比等条件对合成的SrMoO4粉体形貌的影响。结果表明:随着Eu3+浓度的增加,形貌向片状结构转变。另外,在掺杂7.5%Eu3+时,采用加入乙二醇(EG)的方法,抑制了片状结构的生成。随着EG比例的增加,颗粒分布趋向均匀,粒径逐渐变小。当EG与H2O体积比为4∶1时,得到了分布均匀、长约0.8μm的梭子状SrMoO4∶Eu3+粉体。荧光光谱分析结果表明,梭子状SrMoO4∶Eu3+(7.5%)粉体能够被近紫外(395 nm)或者蓝光(463 nm)有效地激发,从而发射波长为614 nm的红光。Shuttle-like SrMoO4 substrate material with an average length of 6 μm and width of 4 μm was synthesized through a microwave-hydrothermal process in the neutral solution.The reactive conditions were studied such as concentration and the amount of Eu3＋-doped（3.75%-30%） and the volume ratio of EG to water on the morphology of the SrMoO4 powder.Results showed that with the increasing of Eu3＋-doped,the morphology had a tendency to become sheet-like.In addition,as the Eu3＋ concentration was 7.5%,the sheets could be controlled by the addition of ethylene glycol（EG）.With the increasing of EG content,the morphology of the products began uniform with smaller size.When the volume ratio reached 4∶1 of EG and H2O,uniform shuttle-like SrMoO4∶Eu3＋ phosphor with a length of 0.8 μm was obtained.The photoluminescence result at the room temperature showed that the submicro-shuttle-like SrMoO4∶Eu3＋（7.5%） phosphor could be effectively excitated by near-UV（395 nm） or blue light（463 nm） with the red-emission at 614 nm.

关 键 词：微波水热 SrMoO4 Eu3+掺杂 

分 类 号：TB39[一般工业技术—材料科学与工程]