Optical properties and energy transfer of NaCaPO4: Tb-3,Eu3+ phosphors

作者：Liang, Zhijuan; Mo, Fuwang; Zhang, Xinguo; Zhou, Liya^*; Chen, Peican; Xu, Chengyi

来源：Ceramics International, 2014, 40(5): 7501-7506.

DOI：10.1016/j.ceramint.2013.12.101

• Optical materials
• Phosphor
• Luminescence

A novel yellow-emitting phosphor NaCaPO4:Tb3+,Eu3+ was synthesized using a conventional, solid-state reaction for solid-state lighting applications. The luminescence properties supported the occurrence of energy transfer from Tb3+ to Eu3+ ions. The energy transfer mechanism was studied and demonstrated to be a quadrupole-quadrupole interaction. The decay curves of NaCaPO4:0.04Tb(3+),xEu(3+) phosphors further confirmed the existence of energy transfer from Tb3+ to Eu3+ ions. This energy transfer induced a change in the emitted color of the phosphors from green to yellow, which can be obtained by appropriately tuning the Eu3+ concentration. The results indicated that NaCaPO4:Tb3+,Eu3+ provided a clue for the search of phosphors for white-light-emitting diodes.

• 出版日期2014-6
• 单位广西大学