Laser annealing enhances the color purity and thermal stability of Y2O3: Eu3+ fluorescent phosphors

IF 3.8 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2026-05-01 Epub Date: 2026-01-27 DOI:10.1016/j.jlumin.2026.121782

Yong Tang , Jianwei Zhao , Yi Li , Yujing Wang , Guangqiu Zhang , Yihang Zhao , Lirong Qin

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引用次数: 0

Abstract

In this study, we demonstrate a synergistic approach combining hydrothermal synthesis with laser annealing to fabricate Y₂O₃:xEu³⁺ phosphors (x = 0.5, 1, 2, 5, 8, 10 %). When the doping concentration is 5 % Eu³⁺, the photoluminescence performance of the sample is the best, with the maximum emission intensity and a longer lifetime. The phosphor obtained by laser annealing, when excited by a 395 nm laser, emits light with a higher color purity than that obtained by traditional annealing; its thermal stability is also improved. Rietveld refinement confirms laser processing promotes preferential Eu³⁺ occupation at low-symmetry C₂ sites, optimizing electric dipole transitions. Meanwhile, both Fourier transform infrared spectroscopy and absorption spectroscopy tests have proved that the performance of the laser-annealed samples is higher than that of the samples annealed in the furnace. In conclusion, laser annealing can be used as a new method for preparing high-performance rare earth luminescent materials.

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激光退火提高了Y2O3: Eu3+荧光荧光粉的色纯度和热稳定性

在这项研究中，我们展示了一种将水热合成与激光退火相结合的协同方法来制备Y2O3:xEu3+荧光粉（x = 0.5, 1,2,5,8,10 %）。当掺杂浓度为5% Eu3+时，样品的光致发光性能最好，发射强度最大，寿命更长。激光退火得到的荧光粉，在395 nm激光激发下，发出的光比传统退火得到的光具有更高的色纯度；其热稳定性也得到了改善。Rietveld细化证实，激光加工促进了低对称性C2位点的Eu3+优先占据，优化了电偶极子跃迁。同时，傅里叶变换红外光谱和吸收光谱测试都证明了激光退火样品的性能高于炉内退火样品。综上所述，激光退火可以作为制备高性能稀土发光材料的一种新方法。

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.