红色荧光粉BaZn_2(PO_4)_2:Eu^(3+)的制备及其光谱特性  

Preparation and Luminescent Properties of Red BaZn_2(PO_4)_2:Eu^(3+) Phosphor

作　　者：杨志平[1] 于红伟[2] 马淑媛[1] 马欣[1] 刘玉峰[1] 王凤和[1] 

机构地区：[1]河北大学物理科学与技术学院,保定071002 [2]河北大学电子信息工程学院,保定071002

出　　处：《功能材料与器件学报》2011年第1期36-39,共4页Journal of Functional Materials and Devices

基　　金：国家自然科学基金(50902042);河北省自然科学基金(F2009000217)资助项目

摘　　要：采用高温固相法制备了BaZn2(PO4)2:Eu3+红色荧光材料。测量了BaZn2(PO4)2:Eu3+材料的激发与发射光谱,激发峰位于360-400nm之间,发射光谱主峰位于595nm处。研究了BaZn2(PO4)2:Eu3+材料在595nm的主发射峰强度随Eu3+浓度的变化,发射峰强度先随Eu3+浓度的增加而增大;当Eu3+的浓度为3%时,峰值强度最大;而后峰值强度随Eu3+浓度的增大而减小。研究了Eu3+浓度保持不变时,不同电荷补偿剂对BaZn2(PO4)2:Eu3+发射光谱强度的影响。电荷补偿剂为Li+,Na+,K+和Cl-时均能提高BaZn2(PO4)2:Eu3+材料的发射光谱强度,其中Cl-离子的效果最好。A red-emitting phosphor BaZn2（PO4） 2：Eu^3＋ was prepared by high temperature solid-state reaction.The excitation and emission spectra of BaZn2（PO4）2：Eu^3＋ phosphors were measured.The results show that the main excitation peaks are located at 360～400nm and the emission peaks are at 595nm.The effect of Eu^3＋ concentration on the emission spectrum intensity of BaZn2（PO 4） 2：Eu^3＋ was investigated,and the results show that the emission spectrum intensity increases with Eu^3＋ concentration increasing,and reaches the maximum value at 3% Eu^3＋,then decreases.Under the condition of doping 3% Eu^3＋,the effects of charge-compensating on the emission intensity were also investigated.Under the conditions of charge compensation Cl-,Li＋,Na＋,or K＋ incorporated in BaZn 2（PO 4） 2,the luminescence intensities of BaZn 2（PO 4） 2：Eu^3＋ phosphor are enhanced and Cl-enhances the intensity of the emission most.

关 键 词：白光LED BaZn2(PO4)2:Eu^3+ 电荷补偿 激发光谱 发射光谱 

分 类 号：O482.31[理学—固体物理]