A novel single-composition tunable color emission KSrY(PO4)(2):Ce3+, Tb3+, Mn2+ phosphor based on energy transfer

作者：Zhang Mengfei; Liang Yujun^*; Huang Wenzhu; Xia Zhanggen; Yu Dongyan; Lan Yazhu; Li Guogang; Zhou Wei

来源：Materials Research Bulletin, 2014, 57: 231-237.

DOI：10.1016/j.materresbull.2014.06.009

• Optical materials
• Luminescence
• Optical properties

A novel single-composition white-emitting phosphor KsrY(PO4)(2):Ce3+, Tb3+, Mn2+ has been synthesized by a high-temperature solid-state reaction. The spectral overlap between the emission band of Ce3+ and the excitation band of Mn2+ supported the occurrence of the energy transfer from Ce3+ to Mn2+, and demonstrated to be the dipole-dipole interaction. The energy transfer efficiency (Ce3+ -> Mn2+) obtained by decay curves was consistent with the result calculated by the emission intensity, which gradually increased from 14.5% to 65.8% by increasing the Mn2+ doping content from 0.02 to 0.36. The mechanism of transferring energy from Ce3+ to Tb3+ and Ce3+ to Mn2+ was also discussed in this study. A single composition white-light emitting phosphor KSr0.94Y0.98(PO4)(2):0.01Ce(3+), 0.01Tb(3+), 0.06Mn(2+), which shows correlated color temperature of 5110 K, color rendering index of 46, and color coordinates of (0.341, 0.337), was obtained. The results indicate that the KSrY(PO4)(2):Ce3+, Tb3+, Mn2+ phosphors have potential applications as an ultraviolet-convertible phosphor.

• 出版日期2014-9
• 单位中国地质大学（北京）