合成方法对掺 Eu 氟化钙中铕的光学特性和氧化态的影响

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-03-12 DOI:10.1016/j.jlumin.2025.121185

K.K. Volik, E.A. Mukhanova, I.A. Pankin, P.D. Kuznetsova, O.E. Polozhentsev, A.A. Tereshchenko, A.V. Soldatov

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Effects of synthesis methods on optical properties and oxidation states of europium in Eu-doped calcium fluoride

The study explores the potential of europium-doped calcium fluoride (CaF₂) nanoparticles (NPs) as promising candidates for photodynamic therapy due to their unique luminescence properties. We demonstrated that the relative concentrations of Eu²⁺ and Eu³⁺ can be tailored by varying the synthesis methods employed, such as coprecipitation and ultrasound techniques. Through a comparative analysis of X-ray excited optical luminescence (XEOL) and X-ray absorption spectroscopy (XAS), we found that the transition from Eu³⁺ to Eu²⁺ can be induced by exposure to X-ray radiation of broad spectral characteristics. Our investigation highlights the influence of rare-earth doping on the X-ray luminescent properties of CaF₂, thus positioning these materials as innovative options for photodynamic therapy applications. The presence of both Eu²⁺ and Eu³⁺ ions and their behavior under X-ray excitation underscore the significance of synthesis methods in optimizing the luminescent properties of these nanomaterials.

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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.