可控合成 SrFCl：提高了 X 射线探测极限的锑纳米闪烁体

IF 3.3 3区物理与天体物理 Q2 OPTICS Journal of Luminescence Pub Date : 2024-11-01 DOI:10.1016/j.jlumin.2024.120972

Aoqing Wei, Jingtao Zhao, Danyang Shen, Lei Lei

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引用次数: 0

摘要

掺杂镧系元素的氟化物纳米粒子在 X 射线成像中具有广阔的应用前景。增强镧系元素激活剂在 X 射线激发光学发光（XEOL）中的强度对于降低 X 射线辐照风险至关重要。在这项研究中，我们发现 SrFCl：Tb 纳米粒子可用作 X 射线探测的闪烁体。通过改变 SrFCl：Tb 的尺寸可通过改变氯化温度来调整。SrFCl: Tb 纳米闪烁体（SrFCl: Tb）的 XEOL 强度（XEOL: TbTb纳米闪烁体（NSs）的XEOL强度是SrF2: Tb种子的约4.3倍。此外，在相同的 X 射线辐照条件下，SrFCl: Tb 纳米闪烁体（NSs）的 XEOL 强度比普通 SrF2: Tb 种子高出约 4.3 倍：Tb 的 XEOL 强度高于平均粒径相似的普通 CaF2：Tb、BaF2：Tb 和 NaYF4：Tb NSs。SrFCl: 15 Tb NSs 的 X 射线探测极限低至 30.71 nGy s-1。我们的研究结果将促进对具有高 X 射线探测性能的掺镧系元素氟化物 NSs 的探索。

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Controlled synthesis of SrFCl: Tb nanoscintillators with improved X-ray detection limit

Lanthanide-doped fluoride nanoparticles show promising applications in X-ray imaging. Enhancing the intensity of lanthanide activators in X-ray excited optical luminescence (XEOL) is crucial for reducing the risk of X-ray irradiation. In this work, we report that the SrFCl: Tb nanoparticles can be employed as scintillator for X-ray detection. The sizes of SrFCl: Tb are tuned by changing the chlorination temperature. The XEOL intensity of the SrFCl: Tb nanoscintillators (NSs) is approximately 4.3 times higher than that of SrF₂: Tb seeds. Moreover, under the same X-ray irradiation conditions, the XEOL intensity of SrFCl: Tb is stronger than those of common CaF₂: Tb, BaF₂: Tb, and NaYF₄: Tb NSs with similar mean particle sizes. The X-ray detection limit of the SrFCl: 15 Tb NSs is as low as 30.71 nGy s⁻¹. Our results will promote the exploration of lanthanide-doped fluoride NSs with high X-ray detection performances.

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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.