Thermally stimulated luminescence of UV-irradiated YAlO3:Bi perovskite

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-09-02 DOI:10.1016/j.jlumin.2024.120875

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引用次数: 0

Abstract

The appearance of the ultraviolet Bi³⁺-related emission band in the thermally stimulated luminescence (TSL) spectrum is observed around 465 K after selective irradiation of the YAlO₃:Bi perovskite in the Bi³⁺-related absorption bands. The excitation spectrum of the TSL glow curve peak at 465 K, activation energies of its creation by photons of different energies, and the dependence of the TSL peak intensity on the irradiation duration are measured. The origin of the optically created electron centers and the mechanisms of photostimulated creation of the electron and hole centers under irradiation in the Bi³⁺-related absorption bands of YAlO₃:Bi are discussed. The TSL glow curve peak at 465 K is suggested to appear as a result of electrons release from the electron centers intrinsic to the YAlO₃ lattice and their recombination with the hole Bi⁴⁺ centers. The same processes are shown to take place in the X-ray-irradiated YAlO₃:Bi perovskite. The obtained results are important for possible applications of the investigated material in thermoluminescent dosimetry.

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紫外线辐照下 YAlO3:Bi 包晶的热刺激发光

在对 YAlO3:Bi 包晶进行 Bi3+ 相关吸收带的选择性辐照后，在 465 K 左右的热激发发光（TSL）光谱中观察到紫外 Bi3+ 相关发射带的出现。测量了位于 465 K 的 TSL 辉光曲线峰的激发光谱、不同能量的光子产生该峰值的活化能以及 TSL 峰值强度与辐照持续时间的关系。讨论了在辐照 YAlO3:Bi 的 Bi3+ 相关吸收带时光学产生的电子中心的来源以及光刺激产生电子和空穴中心的机制。在 465 K 处出现的 TSL 辉光曲线峰值被认为是电子从 YAlO3 晶格固有的电子中心释放并与空穴 Bi4+ 中心重组的结果。X 射线辐照下的 YAlO3:Bi 包晶也发生了同样的过程。所获得的结果对于所研究的材料在热释光剂量测定中的可能应用非常重要。

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.