Color-tunable photoluminescence and energy transfer properties of single-phase Ba10(PO4)6O:Eu2+, Mn2+ phosphors

• Ba10−x−y(PO4)6O:xEu2+,yMn2+ was firstly reported.
• Ba9.94(PO4)6O:0.06Eu2+ exhibits high thermal quenching resistance.
• The energy transfer between Eu2+ and Mn2+ was investigated.

Single-phase Ba10−x−y(PO4)6O:xEu2+,yMn2+ samples with apatite structure have been synthesized via a solid-state reaction method. The phase structure, luminescence properties, lifetime, PL thermal stability, as well as fluorescence decay curves of the samples were investigated. Effective energy transfer occurs from Eu2+ to Mn2+ in Ba10(PO4)6O and a possible mechanism of the energy-transfer from Eu2+ to Mn2+ is proposed. The critical distances Rc was calculated by concentration quenching and turned out to be about 0.817 nm (xc=0.21). The CIE and thermally stable luminescence behaviors of Ba9.94(PO4)6O:0.06Eu2+ phosphor were also studied in detail. All the results indicate that Ba10−x−y(PO4)6O:xEu2+, yMn2+ phosphors have potential applications as near UV-convertible phosphors for white light-emitting diodes.

Crystal structure and luminescence property of Ba10−x−y(PO4)6O:xEu2+,yMn2+ have been discussed.Figure optionsDownload as PowerPoint slide