Department of Physics, S V Degree College, Kadapa, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Jun;79(1):87-91. doi: 10.1016/j.saa.2011.02.009. Epub 2011 Feb 19.
This article reports on the development and spectral results of Eu(3+) and Tb(3+) ions doped cadmium lithium alumino fluoro boro tellurite (CLiAFBT) glasses in the following composition. 40TeO2-30B2O3-10CdO-10Li2O-10AlF3 (Hostglass) (40-x)TeO2-30B2O3-10CdO-10Li2O-10AlF3-xEu2O3 (40-x)TeO2-30B2O3-10CdO-10Li2O-10AlF3-xTb4O7 where x=0.25, 0.50, 0.75, 1.0, 1.25 mol%. Glass amorphous nature and thermal properties have been studied using the XRD and DSC profiles. From the emission spectra of Eu(3+):glasses, five emission transitions have been observed at 578 nm, 592 nm, 612 nm, 653 nm, 701 nm and are assigned to the transitions (5)D(0)→(7)F(0), (7)F(1,)(7)F(2), (7)F(3) and (7)F(4), respectively, with λ(exci)=392 nm ((7)F(0)→(5)L(6)). In case of Tb(3+):glasses, four emission transitions ((5)D(4)→(7)F(6,)(7)F(5), (7)F(4) and (7)F(3)) are observed at 488 nm, 543 nm, 584 nm and 614 nm, respectively, with λ(exci)=376 nm. Decay curves and energy level diagrams have been plotted to evaluate the life times and to analyze the emission mechanism.
本文报道了 Eu(3+)和 Tb(3+)离子掺杂在以下组成的镉锂铝氧氟硼碲酸盐 (CLiAFBT) 玻璃中的光谱结果。40TeO2-30B2O3-10CdO-10Li2O-10AlF3（基质玻璃）(40-x)TeO2-30B2O3-10CdO-10Li2O-10AlF3-xEu2O3 (40-x)TeO2-30B2O3-10CdO-10Li2O-10AlF3-xTb4O7，其中 x=0.25, 0.50, 0.75, 1.0, 1.25mol%。使用 XRD 和 DSC 图谱研究了玻璃的非晶态性质和热性质。从 Eu(3+)玻璃的发射光谱中，观察到五个发射跃迁，分别位于 578nm、592nm、612nm、653nm 和 701nm，分别对应于跃迁(5)D(0)→(7)F(0)、(7)F(1,)(7)F(2)、(7)F(3)和(7)F(4)，激发波长为 392nm((7)F(0)→(5)L(6))。对于 Tb(3+)玻璃，观察到四个发射跃迁((5)D(4)→(7)F(6,)(7)F(5)、(7)F(4)和(7)F(3))，分别位于 488nm、543nm、584nm 和 614nm，激发波长为 376nm。绘制了衰减曲线和能级图，以评估寿命并分析发射机制。
