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A modified solid-state route was attempted to prepare Y0.95 Eu0.05PO4 PDP phosphor, involving milling a powdered mixture of YCl3, EuCl3, and (NH4)2HPO4 and calcining the milling-derived precursor. The thermal decomposition behavior of the milling-derived precursor was in-vestigated by thermogravimetric analysis (TGA). Phase compositions, morphologies, and luminescence properties of the prepared phosphor powder were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and vacuum ultraviolet (VUV) emission spec-tra, respectively. The results indicated that the Y0.95Eu0.05PO4 phosphor powder obtained at a calcination temperature of 900°C was xeno-time-structured. The phosphor powder particles were uniform and spherical-shaped with a primary particle size of ~200 nm. In comparison with that derived by the conventional solid-state route, the phosphor powder prepared by the modified solid-state route exhibited a higher color purity, presenting a predominant emission peak at 619 nm under 147 nm VUV excitation.
A modified solid-state route was attempted to prepare Y0.95 Eu0.05PO4 PDP phosphor, involving milling a powdered mixture of YCl3, EuCl3, and (NH4) 2HPO4 and calcining the milling-derived precursor. The thermal decomposition behavior of the milling- derived compositions were in-vestigated by thermogravimetric analysis (TGA). Phase compositions, morphologies, and luminescence properties of the prepared phosphor powder were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and vacuum ultraviolet (VUV) emission spec-tra, respectively. The results indicated that the Y0.95Eu0.05PO4 phosphor powder was obtained at a calcination temperature of 900 ° C was xeno-time-structured. The phosphor powder particles were uniform and spherical-shaped with a primary particle size of ~ 200 nm. In accordance with that derived by the conventional solid-state route, the phosphor powder prepared by the modified solid-state route exhibited a higher color purity, presenting a predominant emission peak at 619 nm under 147 nm VUV excitation.