Luminescence and radiation response of Al2O3:Sb

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-08-28 DOI:10.1016/j.jlumin.2025.121504

L. Pan , E.G. Yukihara , L.G. Jacobsohn

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引用次数: 0

Abstract

A review of the literature on previous attempts to engineer the luminescence of Al₂O₃ for radiation dosimetry is presented followed by the investigation of Sb³⁺ as a new recombination center for Al₂O₃. Materials were prepared by solution combustion synthesis, calcined in air at 1050 °C, and characterized by X-ray diffraction (XRD) and Raman spectroscopy. They were determined to be single alpha phase up to a Sb concentration of 0.5 mol% when the gamma phase was also observed. Luminescence under X-ray excitation showed the presence of an intense band around 411–423 nm, depending on the Sb concentration, not observed in undoped Al₂O₃. Under excitation at 343 nm, the photoluminescence lifetime was estimated to be ∼11 μs. The lifetime together with the thermal quenching behavior demonstrated this band not to be from F centers and the emission was attributed to Sb³⁺. Sb-doped Al₂O₃ exhibited both optically stimulated (OSL) and thermoluminescence (TL) responses. The OSL initial intensity was nearly 5x more intense than undoped Al₂O₃. TL results indicated high sensitivity and showed a linear response to the irradiation dose at least up to 3 Gy.

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Al2O3:Sb的发光和辐射响应

本文综述了前人在辐射剂量测定中设计Al2O3发光的研究成果，并对Sb3+作为Al2O3新的复合中心进行了研究。采用溶液燃烧合成法制备材料，在1050℃空气中煅烧，并用x射线衍射（XRD）和拉曼光谱对材料进行了表征。在Sb浓度为0.5 mol%时，它们被确定为单一α相，同时也观察到γ相。x射线激发下的发光显示，在411-423 nm附近存在一个强波段，这取决于Sb的浓度，而在未掺杂的Al2O3中没有观察到。在343nm激发下，光致发光寿命估计为~ 11 μs。寿命和热猝灭行为表明，该波段不是来自F中心，发射归因于Sb3+。sb掺杂Al2O3表现出光激发（OSL）和热释光（TL）响应。OSL的初始强度是未掺杂Al2O3的近5倍。TL结果显示灵敏度高，且对辐照剂量至少在3gy以下呈线性响应。

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.