掺有Dy3+离子的氧化锗酸盐和氟化氧玻璃用于白光发射器件

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-06-16 DOI:10.1016/j.radphyschem.2025.113054

Rajaramakrishna R. , Nikonorov N. , Babkina A. , Aleksandrova E. , Gerasimova M. , Slyusareva E. , Vasiliev G. , Abhiram J. , Rudraprasad H.V. , Sristiitpokakun N. , Kirdsiri K. , Kaewkhao J. , Intachai N. , Kothan S. , Jayasankar C.K.

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引用次数: 0

摘要

本研究重点研究了Dy3+离子对玻璃基质发光性能的影响，特别是氧化物、氟化氧和敏化剂含量的影响。镝在这些不同环境中的发射行为和特性已经被广泛研究。利用Judd-Ofelt理论进行了吸收研究，揭示了Ω2 >；Ω4比;Ω6，这表明Dy3+离子周围的局部环境高度不对称。在574 nm处有一个突出的发射峰，对应于4F9/2→6H13/2跃迁。结构分析表明，材料中存在GeO6和GeO4单元、3元环结构和Q3锗网络，这些都影响了材料的发光性能。在350 nm激发下测得Dy、DG、DGF和DGO玻璃的绝对光致发光量子产率（PLQY）分别为6.4±0.4%、13.0±0.6%、18.2±0.8%和25.2±0.8%。能量传递效率也进行了评估，DGO样品显示高达25%的效率。辐射发光研究表明，这些玻璃在可见光范围内表现出显著的闪烁。总的来说，研究结果表明，在各种激发源下，掺杂Dy3+的锗酸盐玻璃具有很强的白光发光应用潜力。

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Germanate oxide and oxyfluoride glasses doped with Dy3+ ions for white light emitting device applications

The present study highlights the influence of Dy³⁺ ions on the luminescent properties of glass matrices, specifically focusing on the effects of oxide, oxyfluoride, and sensitizer content. The emission behaviour and characteristics of dysprosium in these different environments have been extensively investigated. Absorption studies were conducted using the Judd-Ofelt theory, revealing a trend of Ω₂ > Ω₄ > Ω₆, which indicates a highly asymmetric local environment around the Dy³⁺ ions. A prominent emission peak at 574 nm corresponding to the ⁴F₉/₂ → ⁶H₁₃/₂ transition was observed in all glass samples. Structural analysis revealed the presence of GeO₆ and GeO₄ units, 3-membered ring structures, and Q³ germanate networks, all of which influence the luminescence properties. The absolute photoluminescence quantum yield (PLQY) was measured under 350 nm excitation, showing values of 6.4 ± 0.4 %, 13.0 ± 0.6 %, 18.2 ± 0.8 %, and 25.2 ± 0.8 % for Dy, DG, DGF, and DGO glasses, respectively. Energy transfer efficiency was also evaluated, with the DGO sample exhibiting up to 25 % efficiency. Radioluminescence studies demonstrated that these glasses exhibit significant scintillation in the visible range. Overall, the findings suggest that Dy³⁺-doped germanate glasses have strong potential for white light-emitting applications under various excitation sources.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.