BaMg_2(PO_4)_2:Sm^(3+)红色荧光粉发光性质的研究  

Luminescent properties of BaMg_2(PO_4)_2:Sm^(3+) red-emitting phosphor

作　　者：杜宁[1,2] 黄洪云[1] 韩哲[1] 

机构地区：[1]唐山学院基础教学部,河北唐山063000 [2]河北大学物理科学与技术学院,河北保定071002

出　　处：《功能材料与器件学报》2012年第3期209-213,共5页Journal of Functional Materials and Devices

摘　　要：采用高温固相法合成了BaMg2(PO4)2:Sm3+红色荧光材料发光材料并对其发光特性进行了研究。该荧光粉有三个主要发射峰,分别位于564 nm、600 nm、648 nm,对应于4G5/2→6H5/2、4G5/2→6H7/2、4G5/2→6H9/2的跃迁发射,其中600 nm处发射最强,呈现红色发光。随着Sm3+浓度的增加,发光强度先减小后增大,其猝灭浓度为0.01。分别掺入Li+、Na+、K+、F-、Cl-几种离子作为电荷补偿剂,均提高了样品的发光强度,其中K+是最佳的电荷补偿剂。BaMg2(PO4)2:Sm3+是一种有应用潜力的白光LED用红色荧光粉。The red phosphor BaMg2 （ PO4 ） 2 Sm3 was synthesized by high temperature solid state reaction and its luminescent properties were also investigated. It show three major emission peeks locating at 564 nm, 600 nm,648 nm, corresponding to the 4Gs/2-6Hs/2 ,4Gs/e-6HT/2,4GS/2-6H9/2 typical transitions of Sm3 respectively, and the strongest peak appears at 600 nm. The influence of the Sm3 concentration to the emission intensity was investigated and the concentration quench was happened when the concentra- tion of Sm3＋ ions was 0.01. The role of charge compensation of Li ~ , Na~ ,K＋ ,F- and C1- ions can all increased the luminescent intensity of BaMg2 （PO4） 2：Sm3＋ , K ＋ ions gave the best improvement to en- hance the intensity of the emission obviously. K ＋ ion is the optimal charge compensation. BaMg2 （PO4 ）2：Sm3＋ is a potential application of white- light LED red phosphors.

关 键 词：发光 LED 红色荧光粉 BaMg2(PO4)2:Sm3+ 

分 类 号：TN104.3[电子电信—物理电子学]