Influence of pH value on crystal structure, luminescence and scintillation properties of LYPS:Ce powder via sol-gel method for low dose gamma radiation sensing

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-09-10 DOI:10.1016/j.jlumin.2025.121535

Yollanda Bella Christy , Haoyu Li , Hanghua Xu , Linfeng He , Yahui Li , Xulin Luo , Qiang Guo , Gang-Ding Peng

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引用次数: 0

Abstract

In various significant field, inorganic scintillators integrated with optical fibers have been used to achieve real-time remote radiation monitoring. One of the main focuses in detection technology advancements is developing novel scintillators, and LYPS:Ce ((Lu, Y)₂Si₂O₇:Ce) has emerged as a potential candidate. In this research, sol-gel method was used to prepare the LYPS:Ce powder. The lattice structure and elemental composition of LYPS:Ce powder samples prepared using various pH values were analyzed using X-ray diffraction (XRD) and energy dispersive spectrometry (EDS), respectively. Furthermore, the luminescence and scintillation characteristics of LYPS:Ce were studied through photoluminescence, absorption, and fluorescence lifetime measurements. The characterization results indicate that pH 3 was the best condition to prepare the LYPS:Ce powder. The optimized LYPS:Ce powder was then developed into a radiation dosimeter, and the radiation sensing performance was evaluated at gamma dose rates ranging from 10.94 mGy/min to 1379.55 mGy/min. The results show that the dosimeter has a linear response and exhibits good stability under gamma radiation, therefore it has the potential for real-time remote radiation monitoring.

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pH值对溶胶-凝胶法制备LYPS:Ce粉末的晶体结构、发光和闪烁性能的影响

在许多重要领域，无机闪烁体与光纤集成已被用于实现实时远程辐射监测。探测技术进步的主要焦点之一是开发新型闪烁体，LYPS:Ce （(Lu， Y)2Si2O7:Ce）已成为潜在的候选者。本研究采用溶胶-凝胶法制备LYPS:Ce粉末。采用x射线衍射仪（XRD）和能谱仪（EDS）分析了不同pH值制备的LYPS:Ce粉末样品的晶格结构和元素组成。此外，通过光致发光、吸收和荧光寿命测量研究了LYPS:Ce的发光和闪烁特性。表征结果表明，pH为3是制备LYPS:Ce粉体的最佳条件。将优化后的LYPS:Ce粉末制成辐射剂量计，并在10.94 ~ 1379.55 mGy/min的γ剂量率范围内对其辐射传感性能进行了评价。结果表明，该剂量计在伽马辐射下具有良好的线性响应和稳定性，具有实时远程辐射监测的潜力。

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

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.