SrMoO_4粉体的化学溶液沉积制备及其发光性能研究

Preparation and the photoluminescence properties of SrMoO_4 powder prepared by chemical solution deposition

采用化学溶液沉积技术,用廉价的无机盐作为初始原料、常见的有机试剂为溶剂,制备了晶相单一且结晶良好的钼酸锶粉体;借助XRD、SEM和荧光分光光度计,对钼酸锶粉体的晶相、形貌、粒径分布和室温光致发光性能进行了表征。结果表明,所制备的钼酸锶粉体具有单一的四方相;粉体晶粒发育饱满、晶界清晰,晶粒呈现不规则的球状,尺寸在纳米-微米量级;在室温下钼酸锶粉体呈现白钨矿型钨钼酸盐的本征发光特征,在强度最大的激发波长为(296±4)nm时,强度最大的发射波长在470nm左右。

Crystallized SrMoO4 powder has been synthesized via chemical solution deposited processing,in which inorganic salt has been chosen as raw materials,aiding with the common organic solvent.The structure,morphologies,grain size and the photoluminescence properties of the prepared SrMoO4 powder have been tested by employing X-ray diffraction（XRD）,scanning electron microscope（SEM） and fluorescence spectrophotometer.The analysis results indicate that the SrMoO4 powder possesses single tetragonal and near-ball morphologies.The crystalline grains are in the nanometer-micrometer scale,full growth and crystallized well.Excited under the UV light of（296±4）nm,the SrMoO4 powder show the blue-green luminescence（λem=470nm）,which belong to the intrinsic luminescence of the tungstate and molybdate with scheelite structure.