Eu^(3+)作探针研究铋铕共掺硼硅酸盐玻璃光学特性  

Optical property of Bi^(3+)∶Eu^(3+)-codoped borosilicate glass with Eu^(3+) ions as probe

作　　者：徐伟[1] 李成仁[1] 陈宝玖[2] 冯志庆[3] 

机构地区：[1]辽宁师范大学物理与电子技术学院,大连116029 [2]大连海事大学物理系,大连116026 [3]大连民族学院理学院,大连116600

出　　处：《物理学报》2010年第2期1328-1332,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10804015);辽宁省教育厅自然科学基金(批准号:2009A417)资助的课题~~

摘　　要：利用高温烧结法制备了铕/铋铕共掺硼硅酸盐玻璃系列样品,测量了样品的激发光谱、发射光谱和声子边带谱,利用Eu3+离子作为探针进一步研究了敏化剂Bi3+的掺入对Eu3+发光的影响.结果表明:本文制作的玻璃样品的电子-声子耦合系数比以往报道过的硼铅等玻璃材料的值都要小,但在硼硅酸盐玻璃中掺入Bi3+会使Eu3+的无辐射跃迁概率增加;Bi3+对Eu3+有敏化作用,Bi3+的掺入使材料的共价性增强,对称性降低,这又使得Eu3+的发光整体变强.所以,在硼硅酸盐玻璃体系中,Eu3+发光的增强不仅仅是由于Bi3+对Eu3+的能量传递,而是以上各因素综合作用的结果.A series of samples about Eu^3＋ doped, Bi^3＋∶Eu^3＋-codoped borosilicate glasses have been prepared by high-temperature sintering. The excitation spectra, emission spectra and the phonon sideband spectra of the samples were measured. The influence on the luminescence of Eu^3＋ ions was discussed with Eu^3＋ ions as probe when Bi^3＋ions were doped. The results show that the electron-phonon coupling coefficient calculated in this study is smaller than those of borate-lead glasses and others reported before, but the probability of non-radiative transition of Eu^3＋ ions is increased by the doping of Bi^3＋ ions. The Bi^3＋ ions can sensitize Eu^3＋ ions, and when Bi^3＋ ions are doped, the covalent property becomes bigger with the symmetry becoming smaller ,which enhances the luminescence intensity of Eu^3＋ ions on the whole. Therefore, in the borosilicate glasses, the increase of luminescence intensity about Eu^3＋ ions is the result of the combined action between the above factors,not simply because of the energy transition from Bi^3＋ ions to Eu^3＋ ions.

关 键 词：EU^3+ BI^3+ 探针 硼硅酸盐玻璃 

分 类 号：TQ171.1[化学工程—玻璃工业]