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VOLUME 99 | ISSUE 10 | PAGE 647
KBaBP2O8:Tm 3+: a novel blue-emitting phosphor with high color purity
A series of novel blue emitting K1+xBa1-2xTmxBP2O8 (0.01\leq x \leq0.08) phosphors were synthesized by a solid-state reaction at high-temperature for the first time. The phase purity and photoluminescence properties were investigated by X-ray diffraction (XRD) and fluorescence spectroscopy (FS) measurements, respectively. The influence of the doping concentration of Tm3+ on its relative emission intensity was investigated, and the critical distance was calculated. The as-prepared phosphor can be effectively excited with a 356 nm light, and exhibit blue emission at 457 nm with high color purity. The above work indicates this phosphor could be a potential candidate as blue emitting phosphor for application in white light-emitting diodes.