SrAl_2O_4:Eu^(2+),Dy^(3+)长余辉发光玻璃的研制  

Studies on SrAl_2O_4:Eu^(2+),Dy^(3+) Long Afterglow Luminescence Glass

作　　者：王蕊[1] 马达[1] 王雪涛[1] 马雷[1] 

机构地区：[1]沈阳化工学院材料工程学院,辽宁沈阳110142

出　　处：《沈阳化工学院学报》2008年第2期137-140,共4页Journal of Shenyang Institute of Chemical Technolgy

摘　　要：在还原气氛下利用固相反应法合成SrAl2O4:Eu2+,Dy3+长余辉发光粉,以该发光粉和铅锌硼硅酸盐玻璃为原料制备长余辉蓄光玻璃,并通过磷光激发和发射光谱,研究发光粉加入量等因素对发光玻璃光学性能的影响.研究结果表明:该发光玻璃保持了SrAl2O4:Eu2+,Dy3+长余辉发光粉的发光性能,紫外光激发后,发射出波长位于520 nm处的黄绿色光,该谱线为Eu2+在4f65d1→4f7跃迁的特征谱线;在本实验条件下,发光粉的最佳掺入质量分数为30%;随熔制温度的提高,发光玻璃的发光强度及余辉时间明显下降.The long afterglow luminescence powders of Eu^2＋ and Dy^3＋ activated SrAl2O4 were synthesized by solid-state reactions under a weak reductive atmosphere. The long afterglow luminescence glass were synthesized by SrAl2O4 ： Eu^2＋,Dy^3＋ long afterglow luminescence powders and low melting point PbO-ZnO-B2O3-SiO2 glass, and systematically characterized by photoluminescence excitation and emission spectra and the concentration of the long afterglow luminescence powders, etc. The results of experiments show that the long afterglow luminescence glass maintained the phosphorescence properties of SrAl2O4： Eu^2＋,Dy^3＋ long afterglow luminescence powders. After the irradiation with ultraviolet light, the long afterglow luminescence glass emitted yellowish-green long-lasting phosphoresecence（LLP） with a spectrum peaking at about 520 nm ascribed to the characteristic 4f^65d^1→4f^7 transition of Eu^2＋ . As the luminescence powders concentrations at 30 %, the long afterglow luminescence glass with high brightness and long persistent phosphorescence were obtained under the temperature of the experiment. With the melt temperature increasing,the luminescent intensity and the afterglow time of the long afterglow luminescence glass decreased.

关 键 词：长余辉 发光玻璃 发光性能 熔制温度 

分 类 号：TQ171[化学工程—玻璃工业]