KBABP_2O_8:TM~(3+): A NOVEL BLUE-EMITTING PHOSPHOR WITH HIGH COLOR PURITY

摘要

A series of novel blue emitting K_(1+ x) Ba_(1-2 x) Tm_x BP_2O_8 (0. 01 ≤ x ≤ 0. 08) phosphors were synthesized by a solid-state reaction at high-temperature for the ?rst time. The phase purity and photoluminescence properties were investigated by X -ray diffraction (XRD) and ?uorescence spectroscopy (FS) measurements, respectively. The in?uence of the doping concentration of Tm~(3+) 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.