【摘 要】
：
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 calcini
【机 构】
：
School of Materials Science and Engineering
论文部分内容阅读
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 investigated 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 spectra,respectively.The results indicated that the Y0.95Eu0.05PO4 phosphor powder obtained at a calcination temperature of 900℃ was xenotime-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.
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