Na-β″-Al2O3: Ce3+荧光粉的制备及其光学性能

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-09-24 DOI:10.1016/j.jlumin.2025.121574

Yingnan Dong, Yumeng Jia, Kenan Xu, Xu Sun, Jing Wang, Zhongxiang Shi, Yanchen Liu

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引用次数: 0

摘要

为了拓展稀土掺杂发光材料在蓝光照明领域的多场景应用，以Na-β″-Al2O3为基体，采用固态法制备了一系列Ce3+掺杂Na-β″-Al2O3荧光粉。对其晶体结构、微观形貌、光学性能和热稳定性进行了系统的研究。结果表明：制备的Na-β″-Al2O3: xCe3+荧光粉中的活化离子Ce3+取代了晶体中的Al3+ (CN = 6)晶格，并具有优异的蓝光发射性能。此外，通过变温光谱分析了Na-β″-Al2O3: 0.05Ce3+荧光粉的热稳定性，在室温下，其在573K处的发光强度可达71.55%。最后，将Na-β″-Al2O3: 0.05Ce3+荧光粉封装在330 nm的n-UV LED芯片中，获得高质量的蓝色LED器件。其显色指数高（81.60）、色温低（2886 K）、颜色一致性好，为Na-β″- al2o3基荧光粉在蓝色LED器件中的应用提供了理论依据，使其在固态蓝光光谱照明领域显示出巨大的应用潜力。

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Preparation and optical properties of Na-β″-Al2O3: Ce3+ phosphors

In order to expand the multi-scene application of rare earth doped luminescent materials in the field of blue light illumination, a series of Ce³⁺ doped Na-β″-Al₂O₃ phosphors were prepared by solid-state method with Na-β″-Al₂O₃ as matrix. The crystal structure, micro-morphology, optical properties and thermal stability were investigated systematically. The results show that the activated ion Ce³⁺ in the prepared Na-β″-Al₂O₃: xCe³⁺ phosphor replaces the Al³⁺ (CN = 6) lattice in the crystal, and with a outstanding blue light emission. In addition, the thermal stability of Na-β″-Al₂O₃: 0.05Ce³⁺ phosphor is analyzed by variable temperature spectrum, and its luminescence intensity at 573K can reach 71.55 % at room temperature. Finally, Na-β″-Al₂O₃: 0.05Ce³⁺ phosphors are packaged with 330 nm n-UV LED chips to obtain high quality blue LED devices. With its high color rendering index (81.60), low color temperature (2886 K) and good color consistency, it provides a theoretical basis for the application of Na-β″-Al₂O₃-based phosphors in blue LED devices, and makes it show great application potential in the field of solid-state blue spectral lighting.

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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.