Thermoluminescence (TL) properties of Eu3+ incorporated with CaB4O7 phosphors prepared by solution-combustion process

IF 1.6 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2024-09-11 DOI:10.1016/j.apradiso.2024.111522

Francis Birhanu Dejene, Habtamu Fekadu Etefa

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引用次数: 0

Abstract

The solution-combustion approach was used to create CaB₄O₇:Eu³⁺phosphors using Ba (NO₃)₂, Eu (NO₃)₃·5H₂O, H₃BO₃, NH₃(ON)H₂, and NH₄NO₃ as source materials. We investigated the thermoluminescence (TL) characteristics of beta (β)-irradiated CaB₄O₇:Eu³⁺. When the TL intensity was evaluated at different dosages of β, it rose with the dose. Changes in peak temperature were observed because of the investigation of the effects of varying heating rates on TL glow curves. Moreover, the positions of the peak temperature and the TL intensity did not change when the same sample was measured again, suggesting that the sample was stable. Additionally, the study calculated several kinetic parameters, including activation energy (E), frequency factor (s), and geometrical factor (μg), for distinct TL glow curves. Through geometric analysis of TL glow peaks, the study determined activation energies and kinetic orders, enabling the calculation of the frequency factor. The findings highlight the suitability of the prepared phosphor for dosimetry and provide insights into trap characteristics crucial for continuous illumination at room temperature. The study also emphasises the importance of optimising trap depth for prolonged afterglow, shedding light on the interplay between trap energies and luminescence characteristics. These findings deepen our comprehension of phosphor behavior and open the door to better dosimetry applications.

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溶液燃烧法制备的 Eu3+ 与 CaB4O7 荧光粉的热致发光 (TL) 特性

我们采用溶液燃烧法，以 Ba (NO3)2、Eu (NO3)3-5H2O、H3BO3、NH3(ON)H2 和 NH4NO3 为源材料，制备了 CaB4O7:Eu3+ 磷酸盐。我们研究了β（β）辐照 CaB4O7:Eu3+ 的热致发光（TL）特性。当对不同剂量的 β 进行评估时，热发光强度随着剂量的增加而上升。由于研究了不同加热速率对 TL 辉光曲线的影响，观察到了峰值温度的变化。此外，再次测量同一样品时，峰值温度和 TL 强度的位置没有发生变化，这表明样品是稳定的。此外，该研究还计算了不同 TL 辉光曲线的几个动力学参数，包括活化能 (E)、频率因子 (s) 和几何因子 (μg)。通过对 TL 辉光峰的几何分析，该研究确定了活化能和动力学阶数，从而计算出了频率因子。研究结果凸显了所制备荧光粉在剂量测定方面的适用性，并提供了对室温下连续照明至关重要的阱特性的深入了解。研究还强调了为延长余辉而优化阱深度的重要性，揭示了阱能量与发光特性之间的相互作用。这些发现加深了我们对荧光粉行为的理解，并为更好的剂量测定应用打开了大门。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. 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. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.