Luminescence Properties of Dual-Emission Ce~(3+), Mn~(2+) Doped NaSrBO_3 Phosphors

摘要

A novel dual-emission phosphor NaSrBO_3: Ce~(3+), Mn~(2+) was synthesized by the solid state reaction. The crystal structure, photolumi-nescence properties and concentration quenching of NaSrBO_3: Ce~(3+), Mn~(2+) phosphor were systematically investigated. NaSrBO_3: Ce~(3+), Mn~(2+) phosphors emit two distinctive colors: a blue band centered at 430 nm originating from Ce~(3+) and a red band from Mn~(2+) sensitized emission. The energy transfer from Ce~(3+) to Mn~(2+) is observed with a transfer efficiency of ~50% and the critical, distance of ~13 A is calculated by both crystal structure data method and experimental spectral method. The results indicate that efficient energy transfer from Ce~(3+) to Mn~(2+) exists in the NaSrBC>3 doped with Ce~(3+), Mn~(2+) system.