光子学报, 2015, 44 (1): 0116004, 网络出版: 2015-01-26
Dy3+-Tb3+掺杂氟氧碲酸盐玻璃的光谱性能研究
Luminescence Properties of Oxyfluoride Tellurite Glasses Doped with Dy3+ Ions and Tb3+ Ions
碲酸盐玻璃 稀土掺杂 激发与发射 发光 光谱分析 能量传递 Dexter理论 Tellurite glass Doping Excitation and emission Luminescence Spectral analysis Energy transfer Dexter theory
摘要
实验采用高温熔融法制备了一系列Dy3+离子、Tb3+离子单掺或共掺氟氧碲酸盐玻璃样品.测试了不同摩尔含量的Dy3+离子和Tb3+离子的氟氧碲酸盐玻璃样品的密度, 分析了紫外-可见透射光谱、激发光谱、发射光谱、发光衰减曲线, 研究了不同摩尔含量的Dy3+离子和Tb3+离子的氟氧碲酸盐玻璃样品光谱性能及Dy3+离子到Tb3+离子能量传递机理.结果表明: Dy3+离子、Tb3+离子单掺或共掺氟氧碲酸盐玻璃样品的密度均大于5 g·cm-3, 最大可达6.09 g·cm-3;Dy3+离子可以敏化Tb3+离子, 促进其发光, 但当Dy3+离子超过一定浓度后, 会发生离子间浓度猝灭效应, Tb3+离子的发光反而降低.试验测得, Dy3+离子的最佳掺杂浓度为1.0 mol%, 此时, Tb3+离子掺杂浓度为6.0 mol%, Tb3+离子发光效果最强.依据Dexter能量传输理论, 并对Dy3+离子和Tb3+离子的能级图及能级间的跃迁进行分析, 可知Dy3+离子和Tb3+离子间的能量传递方式为非辐射共振传递.
Abstract
The oxyfluoride tellurite glasses doped with Dy3+ions, Tb3+ ions respectively and co-doped with Dy3+ ions and Tb3+ ions were synthesized by high-temperature melting method. Densities of different molar concentrations of Dy3+ions and Tb3+ ions were measured. Transmission spectra, excitation spectra, emission spectra and decay time were investigated. And the energy transfer between Dy3+ ions and Tb3+ ions were studied. The results showe that all the glass samples have a high density with more than 5 g·cm-3, and up to 6.09 g·cm-3. Dy3+ ions can effectively sensitize the luminescence of Tb3+ ions, when molar concentrations of Dy3+ ions is more than a certain concentration, the emission intensity of Tb3+ ions will be decreased because of the concentration quenching effect. With 1mol% Dy3+ ions, the emission intensity of Tb3+ ions show higher for 6mol% Tb3+ ions - doped oxyfluoride tellurite glasses. Based on Dexter theory, it is showed that the energy transfer between Dy3+ ions and Tb3+ ions was nonradiation energy transfer by analyzing the analyzingenergy level diagram and energy transfer from Dy3+ ions to Tb3+ ions.
王倩, 张为欢, 欧阳绍业, 杨斌, 张约品, 夏海平. Dy3+-Tb3+掺杂氟氧碲酸盐玻璃的光谱性能研究[J]. 光子学报, 2015, 44(1): 0116004. WANG Qian, ZHANG Wei-huan, OUYANG Shao-ye, YANG Bin, ZHANG Yue-pin, XIA Hai-ping. Luminescence Properties of Oxyfluoride Tellurite Glasses Doped with Dy3+ Ions and Tb3+ Ions[J]. ACTA PHOTONICA SINICA, 2015, 44(1): 0116004.