Eu^(3+)掺杂SiO_2-Al_2O_3-B_2O_3玻璃制备及光谱性能研究  

Preparation and Spectral Properties of Eu^(3+)-Doped SiO_2-Al_2O_3-B_2O_3 Glass

作　　者：乐务时[1] 李云辉[1] 肖洪亮[1] 郑笑秋[1] 李岳[1] 刘双[1] 吕景文[1] 

机构地区：[1]长春理工大学材料科学与工程学院,吉林长春130022

出　　处：《中国稀土学报》2008年第2期158-161,共4页Journal of the Chinese Society of Rare Earths

摘　　要：高温熔制了Eu3+掺杂SiO2-Al2O3-B2O3-MxOy(M=Li+,Na+,K+,Mg2+,Ca2+,Sr2+,RE3+)硼硅酸盐玻璃,测试了玻璃样品的发射光谱、激发光谱和透射光谱,研究了不同碱金属离子、碱土金属离子对该系统荧光性能的影响。利用发射光谱计算了Ω2,Ω4以及5D0到7F2,7F4的自发辐射几率和振子强度f(5D0→7F2),f(5D0→7F4)。结果表明,材料的发射能级为5D0→7F1(590 nm),5D0→7F2(617 nm),5D0→7F4(698 nm),而且材料的结构对称性越差,跃迁戒律打破地越彻底,荧光发射越强。Eu^3＋-doped SiO2-Al2O3-B2O3-MxOy（M=Li^＋,Na^＋,K^＋,Mg^2＋,Ca^2＋,Sr^2＋,RE^3＋） glass was prepared by fusion method at high temperature. Its emission, excitation and transmission spectra were measured. Based on J-O theory, the J-O parameters （g22, g24） were calculated by the above emission spectra . Then the probability of spontaneous emission and the oscillator strength of Eu^3＋ ions from ^5D0 to ^7F2and 7F4 in borosilicate glass host were calculated. The results indicated that the emission transitions mainly contained ^5D0→^7TFl（590 nm）, ^5D0→^7TF2（617 nm） and ^5D0→^7TF4 （698 nm）, the fluorescence density was increased by introduced Sr^2 ＋→Ca^2 ＋→Mg^2 ＋ or Li ^＋→K^ ＋ →Na^＋ and the probability of the forbidden transition increased as the symmetry of micro-structure decreased.

关 键 词：EU^3+掺杂 光谱 荧光性能 硼硅酸盐玻璃 稀土 

分 类 号：TQ171[化学工程—玻璃工业] TB34[化学工程—硅酸盐工业]