Photoluminescence properties of novel KBaBP2O8:M (M=Pb2+ and Bi3+) phosphors

Abstract A series of novel inorganic phosphors KBa 1− x Pb x BP 2 O 8 and K 1+ x Ba 1−2 x Bi x BP 2 O 8 (0.01 ⩽ x ⩽ 0.08) were synthesized by using a solid-state reaction technique at high-temperature and their photoluminescence properties were investigated. The dependence of the emission intensity on the Pb 2+ and Bi 3+ concentration for the KBa 1− x Pb x BP 2 O 8 and K 1+ x Ba 1−2 x Bi x BP 2 O 8 was studied, in which the optimal concentration as well as the critical transfer distance R c for Pb 2+ and Bi 3+ was obtained and determined. The as-prepared phosphors can be effectively excited with ultraviolet (UV), and exhibit UV − blue emission with large Stokes shift. The above work indicates these phosphors could be potential candidates for application in UV lamps industry.