Concentration Effect of Glass Former on the Lumenescene Properties of Tb3+-Ions Doped Na2O–CaO–B2O3–TeO2 Glasses for Laser Applications

IF 0.8 4区材料科学 Q4 MATERIALS SCIENCE, CERAMICS Glass Physics and Chemistry Pub Date : 2024-07-02 DOI:10.1134/s1087659623600825

M. Shoaib, Ata Ullah, Abdullah A. A. Mohammed, S. M. Wabaidur, F. Qiao, I. Khan, G. Rooh, I. Ullah

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Abstract

In this work we prepared boro-telluride glass samples while varying the concentration of TeO₂ (0.00, 10.00, 20.00 mol %) by melt quenching technique and study their physical, optical and luminescence properties by various characterization methods. We found that band gap lies in the 2.88–2.18 eV range, showing decreasing trend with increasing concentration of TeO₂. The emission spectra shows four emission peaks under 378 nm excitation centered at 486, 545, 590 and 620 nm because of the transition from ⁵D₄ state to ⁷F_J (where, J = 6, 5, 4, 3) lower levels. Whereas the intensity decreases with increasing concentration of TeO₂, indicating that the non-radiative energy transfer through cross relaxation (CR) increases with increasing concentration of TeO₂. The color coordinates for all studied glasses fall in green region and were (x = 0.304, y = 0.605). The CCT obtained value for all prepared glasses is 6000 K. Above study suggests that these glasses can be potentially used in green light LEDs and in other solid state lighting applications.

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玻璃成形剂的浓度对用于激光应用的掺杂 Tb3+ 离子的 Na2O-CaO-B2O3-TeO2 玻璃的发光特性的影响

摘要在这项工作中，我们采用熔体淬火技术制备了不同浓度的 TeO2（0.00、10.00、20.00 mol %）溴碲玻璃样品，并通过各种表征方法研究了它们的物理、光学和发光特性。我们发现，带隙在 2.88-2.18 eV 范围内，随着 TeO2 浓度的增加呈下降趋势。发射光谱显示，在 378 nm 激发下有四个发射峰，分别以 486、545、590 和 620 nm 为中心，这是因为从 5D4 态过渡到了 7FJ （其中 J = 6、5、4、3）低级态。而强度随着 TeO2 浓度的增加而降低，这表明通过交叉弛豫（CR）进行的非辐射能量转移随着 TeO2 浓度的增加而增加。所有研究玻璃的色坐标都位于绿色区域，分别为（x = 0.304，y = 0.605）。上述研究表明，这些玻璃可用于绿光 LED 和其他固态照明应用。

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来源期刊

Glass Physics and Chemistry 工程技术-材料科学：硅酸盐

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.