Li, Yuebin, Wang, Zhijun, Wang, Zhipeng, Meng, Xiangyu, Qiu, Keliang, Chen, Yun, Liu, Jinjin, Bao, Qi, Yang, Zhiping, and Li, Panlai
Series of Sr 6 Ca 4 (PO 4) 6 F 2 :Ce3+, Tb3+, Sm3+ are prepared by a high temperature solid state method. Ce3+, Tb3+ or Sm3+ single-doped Sr 6 Ca 4 (PO 4) 6 F 2 can produce blue, green and red emission under ultraviolet excitation, respectively. However, the emission intensities of Tb3+ and Sm3+ are relatively weak due to their forbidden transition. In order to achieve white light, the spectral property and decay curves of Sr 6 Ca 4 (PO 4) 6 F 2 :Ce3+/Tb3+/Sm3+ are measured, not only the energy transfer of Ce3+-Tb3+, Ce3+-Sm3+ and Tb3+-Sm3+ was demonstrated, importantly, but also the single-phase white emitting phosphor Sr 6 Ca 4 (PO 4) 6 F 2 :0.14Ce3+, 0.07Tb3+,0.13Sm3+ was obtained by the energy transfer. [ABSTRACT FROM AUTHOR]