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        A blue-emitting phosphor of Ba2MgP4O13 : Eu2+ for white light UV light-emitting diodes

        서효진,Nuan Xie,Yanlin Huang 한양대학교 세라믹연구소 2010 Journal of Ceramic Processing Research Vol.11 No.3

        A novel blue-emitting phosphor of Eu2+-doped Ba2MgP4O13 phosphate was prepared by a high-temperature solid-state reaction method. The phosphor was investigated by X-ray powder diffraction (XRD) measurements and confirmed to be the pure crystalline phase of Ba2MgP4O13. The emission and excitation spectra of the phosphor were studied. The phosphor could be excited by UV light from 220 nm to 400 nm and emitted a blue luminescence peaked at 410 nm, which corresponds to the 4f 65d1→4f 7 transition of Eu2+ ions. The dependence of luminescence intensities of Eu2+-doped Ba2MgP4O13 on the heating temperature and doping concentrations were investigated. The phosphor had an excellent thermal stability to temperature quenching effects. The luminescence decay (lifetimes) of the phosphor is also discussed in order to further investigate its potential applications for white light-emitting diode phosphors pumped by a near-UV chip.

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