title: Influence of rare earth elements (Y, Gd and Lu) on the luminescent properties of green phosphor ZnMoO4:Tb3+.
abstract: (Zn,Lnx )MoO4 :Tb(3+) (Ln = Y(3+), Gd(3+) and Lu(3+) ) were prepared using the co-precipitation method. Phase impurity, morphology and composition were investigated by power X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The experimental results show that crystal structure is not destroyed after doping an appropriate amount of Y(3+), Gd(3+) and Lu(3+). EDS analysis reveals that Y, Gd and Lu have been successfully doped into ZnMoO4 . In addition, the morphology of the phosphors is notably improved, exhibiting homogeneous dispersion morphology and irregular shapes of particle size ~ 0.5-1 µm. The luminescent intensity of (Zn,Lnx )MoO4:Tb(3+) (Ln = Y(3+), Gd(3+) and Lu(3+)) phosphor is obviously higher than that of ZnMoO4 :Tb(3+) phosphor. The energy transfer process between trivalent rare earth ions indicates that the inert earth ions can act as an energy bridge from MoO4(2-) to Tb(3+).
authors.affiliation: College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Xu
authors.forename: W
authors.initials: W
authors.lastname: Yang
authors.forename: X
authors.initials: X
authors.lastname: Li
authors.forename: W
authors.initials: W
authors.lastname: Li
authors.forename: X
authors.initials: X
authors.lastname: Ju
mesh_terms: D004735:Energy Transfer; D049449:Luminescence; D008674:Metals, Rare Earth / Q000737:chemistry*; D008982:Molybdenum / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties; D015032:Zinc / Q000737:chemistry*
chemical_list: D008674:Metals, Rare Earth; D008982:Molybdenum; D015032:Zinc; D010100:Oxygen
keywords: co-precipitation; energy transfer; green phosphor; photoluminescence