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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Time-resolved fluorescence measurements on Dy3+ and Sm3+ doped glasses
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Time-resolved fluorescence measurements on Dy3+ and Sm3+ doped glasses

机译：Dy3 +和Sm3 +掺杂玻璃上的时间分辨荧光测量

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摘要

Various fluoride, phosphate and borosilicate glasses with known properties and global structure have been doped with Dy3+ (4f(9)) and Sm3+ (4f(5)) between 10(18) and 10(21) cm(-3) and their time resolved fluorescence in the visible range in combination with characteristic physical properties were studied. Different fit procedures were carried out. Although both ions differ in their intrinsic fluorescence lifetime, with 1.5 ms for Dy3+ and 6.5 ms for Sm3+ their dependence on glass matrix is remarkable similar. Fluoroaluminate glasses with varying phosphate content between 0 and 20 mol% (FPx), a pure phosphate glass (P100), and two borosilicate glasses with low (DURAN(R)-like) and high optical basicity (NBS1) were used for investigations. A strongly ionic surrounding by fluorine ligands, as in fluoroaluminate glass samples, provides the longest fluorescence lifetime. It decreases with increasing phosphate content by increasing oxygen surrounding and with increasing RE3+ doping. Large differences were detected in the two borosilicate glasses depending on their optical basicity mainly due to differences in the Na2O/B2O3 ratio. Duran-like samples with low Na2O content have shown phase separation with higher doping concentration. The RE3+ ions are accumulated in the borate-rich droplets. Surprisingly only very low concentration-quenching effects were observed. In the opposite of NBS1 samples with high Na2O content this generated extremely high quenching effect. (C) 2007 Elsevier B.V. All rights reserved.
机译：已在10（18）和10（21）cm（-3）之间掺入Dy3 +（4f（9））和Sm3 +（4f（5））并掺杂各种已知性能和整体结构的氟化物，磷酸盐和硼硅酸盐玻璃研究了在可见光范围内分辨的荧光以及特征性的物理性质。进行了不同的拟合程序。尽管两种离子的固有荧光寿命不同，但Dy3 +的1.5毫秒和Sm3 +的6.5毫秒对玻璃基质的依赖性非常相似。用于研究的磷酸盐含量在0到20 mol％（FPx）之间变化的氟铝酸盐玻璃，纯磷酸盐玻璃（P100）和两个低（DURAN？-like）和高光学碱度的硼硅酸盐玻璃（NBS1）用于研究。如氟铝酸盐玻璃样品中的氟配体所包围的强离子，可提供最长的荧光寿命。随着周围氧气的增加以及RE3 +掺杂的增加，磷含量降低。在两个硼硅酸盐玻璃中，根据它们的光学碱度，检测到很大的差异，这主要是由于Na2O / B2O3比的差异。 Na2O含量低的类似Duran的样品显示出具有较高掺杂浓度的相分离。 RE3 +离子积累在富含硼酸盐的液滴中。令人惊讶地，仅观察到非常低的浓度猝灭作用。与Na2O含量高的NBS1样品相反，这产生了极高的淬灭效果。 （C）2007 Elsevier B.V.保留所有权利。

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