发光学报, 2014, 35 (4): 413, 网络出版: 2014-05-08   

光学碱度对Tb3+掺杂Bi2O3-B2O3玻璃发光性能的影响

Effect of Optical Basicity on Luminescence Properties of Tb3+ Doped Bi2O3-B2O3 Glasses
作者单位
1 陕西科技大学 材料科学与工程学院, 陕西 西安710021
2 陕西科技大学 机电工程学院, 陕西 西安710021
摘要
采用熔融法制备了Tb3+掺杂的Bi2O3-B2O3系统玻璃, 使用激发、发射及拉曼光谱分析了光学碱度与玻璃结构及发光性能的关系, 同时绘制了Tb3+、Bi3+和Bi2+的能级图。研究结果表明: Tb3+掺杂的Bi2O3-B2O3玻璃由[BO3]、[BiO3]、[BO4]及[BiO6]共同组成, 且随着光学碱度由0.63增加到0.93, 玻璃的结构逐渐疏松。高的光学碱度使部分Bi3+变为Bi2+, 发出571 nm(2P3/2(2)→2P1/2)的光, Bi3+→Tb3+的能量降低。在光学碱度及Tb3+、Bi3+和Bi2+离子的共同作用下, 随着光学碱度的提高, 玻璃的发光颜色由黄绿色变为白色。
Abstract
Tb3+ doped Bi2O3-B2O3 glasses were prepared by melting technique, and the relationship of optical basicity, luminescence properties and structure were investigated by excitation, emission and Raman spectra. Energy level structures of Tb3+, Bi3+ and Bi2+ ions were plotted for the excitation and energy transfer routes. The results show that Tb3+ doped Bi2O3-B2O3 glasses consist of [BO3], [BiO3], [BO4], and [BiO6] together as basic structural groups, and its structure turn looses as the optical basicity increasing from 0.63 to 0.93. Based on energy matching condition, 571 nm emission ascribed to 2P3/2(2)→2P1/2 transition of Bi2+ reduces from Bi3+ ions at high optical basicity of glasses, which decreases the transition of Bi3+→Tb3+. The luminescent properties of Tb3+ doped Bi2O3-B2O3 glasses are quite sensitive to optical basicity, the luminescence color turns to white from yellow-green with the optical basicity increasing.

刘盼, 殷海荣, 郭宏伟, 董继先. 光学碱度对Tb3+掺杂Bi2O3-B2O3玻璃发光性能的影响[J]. 发光学报, 2014, 35(4): 413. LIU Pan, YIN Hai-rong, GUO Hong-wei, DONG Ji-xian. Effect of Optical Basicity on Luminescence Properties of Tb3+ Doped Bi2O3-B2O3 Glasses[J]. Chinese Journal of Luminescence, 2014, 35(4): 413.

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