水热法制备的NaEu(MoO 4 ) 2-x (WO 4 ) x 固溶体微晶及其发光特性

NaEu( MoO4)2- x( WO4)xsolid solution microcrystallines were synthesized by hydrothermal method. The structure,morphology and photoluminescent properties of the microcrystallines were studied by X-ray powder diffraction( XRD),scanning electron microscopy( SEM) and fluorescence analysis( FA). XRD results show that NaEu( MoO4)2- x( WO4)xmicrocrystallines are all typical scheelite structure with tetragonal symmetry. SEM measurements reveal that the phosphors are rice-like particles. The fluorescence analysis( FA) results reveal that the characteristic emission peak of MO2-4( M = Mo,W) complex ion appears from 370 to 386 nm,and blue shifts with the increasing of x. Moreover,the characteristic emission peaks located at 592 nm and 614 nm of Eu3 +all appear obviously,and the intensity gradually increases with the increasing of x.