Abstract:
Green phosphor ZnWO
4:Tb
3+ applied in fluorescent lamp was prepared by hydrothermal method.The structure, morphology and luminescent properties of ZnWO
4:Tb
3+ green phosphors with different surfactants are characterized by X-ray powder diffraction (XRD), Scanning electron microscopy (SEM) and fluorescence spectrometer, respectively.It reveals that all of the as-obtained samples with different surfactants are pure ZnWO
4, Tb
3+ doping without the alteration of the structure of ZnWO
4.The excitation and emission spectra as well as fluorescence decay curves of samples were measured.The results show that the use of PEG-2000 as the surfactant is the most effective for increasing fluorescent emission intensity.The luminescence life of ZnWO
4:Tb
3+ phosphor using PVP as the surfactant is longer than that of phosphor with PEG-2000 and CTAB as surfactants.PVP is the best choice for the surfactant with comprehensive consideration of the influence of emission intensity and fluorescence lifetime.