稀土掺杂Ca_(1.995)Ba_(0.005)Zn_4Ti_(15)O_(36):Pr^(3+),Na^+红色荧光粉的合成和敏化发光  

Preparation and Sensitized Luminescence of Ca_(1.995)Ba_(0.005)Zn_4Ti_(15)O_(36):Pr^(3+),Na^+ Red Phosphors Doped With Rare Earths

作　　者：刘利民[1] 曾立华[1] 

机构地区：[1]湖南师范大学化学化工学院,中国长沙410081

出　　处：《湖南师范大学自然科学学报》2015年第6期33-37,共5页Journal of Natural Science of Hunan Normal University

基　　金：湖南省自然科学基金重点资助项目(2015JJ2100)

摘　　要：利用溶胶-凝胶法和高温固相法制备了双掺杂的Ca_(1.995)Ba_(0.005)Zn_4Ti_(15)O_(36):Pr^(^(3+)),Na^+发光材料(杂质离子为Sm^(3+),Eu^(3+),Gd^(3+),Tb^(3+),Dy^(3+),Tm^(3+)).实验结果表明溶胶-凝胶法制备的前驱体在1 000℃灼烧24 h,与高温固相法在1 200℃灼烧48 h得到的样品相比,溶胶-凝胶法制备样品的发光性质较好.通过测定样品的激发光谱和发射光谱,发现在Ca_(1.995)Ba_(0.005)Zn_4Ti_(15)O_(36)基质中,Sm^(3+),Eu^(3+),Gd^(3+),Tb^(3+),Dy^(3+)和Tm^(3+)的引入增强了Pr^(3+)的红光发射,其中Eu^(3+)的作用最强.Ca_(1.995)Ba_(0.005)Zn_4Ti_(15)O_(36):0.006 Pr^(3+),0.006Na^+,0.004 Eu^(3+)是一种新型红色长余辉发光材料.The red phosphors Ca_（1.995）Ba_（0.005）Zn_4Ti_（15）O_（36）： Pr^3＋,Na＋doped with one of Sm^3＋,Eu^3＋,Gd^3＋,Tb^3＋,Dy^3＋,Tm^3＋ions were prepared through sol-gel（ SG） method and high temperature solid state（ SS） method. Experimental results show the luminescent properties of the phosphors prepared by SG method under 1 000 ℃ for 24 h is better than that by SS method under 1 200 ℃ for 48 h. The results of the excitation and emission spectra revealed that energy transfer existed from Sm^3＋→Pr^3＋,Eu^3＋→ Pr^3＋,Gd^3＋→ Pr^3＋,Tb^3＋→ Pr^3＋,Dy^3＋→ Pr^3＋,Tm^3＋→Pr^3＋,and the best sensitizing effect is Eu^3＋→ Pr^3＋. Ca_（1.995）Ba_（0.005）Zn_4Ti_（15）O_（36）： 0. 006 Pr^3＋,0. 006Na^＋,0. 004 Eu^3＋ is a novel red phosphor.

关 键 词：Ca1.995Ba0.005Zn4Ti15O36:Pr3+ Na+ 敏化发光 溶胶凝胶法 高温固相法 

分 类 号：TN104.3[电子电信—物理电子学]