新型LED红色荧光材料CaxSr1-x-y-zMoO4：yEu^3＋，zNa^＋的制备和表征  

Preparation and Characterization of a New Red-Emitting Phosphor Ca_xSr_(1-x-y-z)MoO_4:yEu^(3+),zNa^+ for LED

作　　者：曹发斌[1] 田彦文[1] 陈永杰[2] 肖林久[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]沈阳化工学院应用化学学院,辽宁沈阳110142

出　　处：《东北大学学报（自然科学版）》2009年第1期105-109,共5页Journal of Northeastern University(Natural Science)

基　　金：辽宁省科技攻关项目(2006223004)

摘　　要：利用Na+为电荷补偿剂制备CaxSr1-x-y-zMoO4:yEu3+,zNa+红色LED荧光粉体.研究了电荷补偿剂的用量、基质材料中Ca2+的含量、合成温度、反应时间及发光中心Eu3+摩尔分数对荧光材料晶体结构和发光性能的影响.结果表明:最佳工艺条件为电荷补偿剂摩尔分数为6%,Eu3+摩尔分数为8%,Ca2+摩尔分数为60%,反应温度900℃和反应时间2 h.光谱测试结果表明,该荧光材料可被311,395或465 nm有效激发,发射峰在616 nm.The CaxSr1-x-y-zMoO4：yEu^3＋,zNa^＋ as a red phosphor was prepared for LED by solid-state reaction with Na^＋ as charge compensating agents. The effects of Na^＋ dose, Ca^2＋ content in matrix, synthesizing temperature, reaction time and the molecular fraction of Eu^3＋ as luminescent center on the luminescent properties and crystal structure of the phosphor were studied. The results showed that the optimum reaction conditions in molecular fraction are 6 % Na^＋, 8% Eu^3＋ and 60% Ca^2＋ with reaction temperature 900 ℃ for 2 h. The luminescent spectra revealed that the red-emitting phosphor can be effectively excited at 616 nm emitting peak by 311 nm, 395 nm or 465 nm.

关 键 词：CaxSr1-x-y-zMoO4:yEu^3+ zNa^+ LED 红色荧光粉 电荷补偿剂 

分 类 号：O433[机械工程—光学工程]