Abstract:The Bi3+-doped GdVO4:Tm3+ Blue Phosphors were synthesized by co-precipitation method. The crystal structure, the morphology and the luminescence properties of the (Gd, Bi)VO4:Tm3+ Blue Phosphors were investigated by X-ray Diffractometer (XRD), Scanning Electron Microscopy (SEM) and Fluorescence Spectrophotometer (PL). The results show that the crystal structure of the prepared Gd0.99-xVO4:Tm0.013+, Bix3+ phosphors is a tetragonal zircon type structure as same as GdVO4:Tm3+ phosphor. Nevertheless, the crystal structure of GdVO4:Tm3+ is not changed with Bi3+-doping. The SEM image reveals Gd0.99-xVO4:Tm0.013+, Bix3+ phosphor powders are composed of relatively uniform particles and its particle average size is about 70 nm. The photoluminescence intensity of （Gd, Bi）VO4:Tm3+ phosphor is enhanced by Bi3+ doping. When the concentration rate of Bi3+/Tm3+=0.5, the maximum photoluminescence intensity can be achieved at wavelengths 417 nm and the bright blue luminescence is displayed.