一种具有石榴石结构和高稳定性的新型红发Ca2LaTiAl3O12:Eu3+荧光粉，用于高显色白光器件

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-03-29 DOI:10.1016/j.jlumin.2025.121217

Weihao Ye , Mi Li , Shaowei Li , Jie Luo , Yingji He , Yang Lv , Xiaotang Liu , Yingliang Liu , Guangqi Hu

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引用次数: 0

摘要

探索高效、稳定的发红材料对于高显色指数（CRI）的白光器件至关重要，具有石榴石结构的Eu3+活化荧光粉在这方面具有重要的前景。本研究采用一步固相反应法制备了一种高亮度、光致发光量子产率（PLQY）达65%的新型Ca2LaTiAl3O12(CLTA):Eu3+红色荧光粉。该荧光粉具有优异的光稳定性，高热稳定性和令人印象深刻的荧光回收率，表明其适合LED封装。利用经优化的具有成本效益的CLTA:Eu3+，制造的led达到了91.6的高显色指数，显示了WLED应用的强大潜力。

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A novel red-emission Ca2LaTiAl3O12:Eu3+ phosphor with garnet structure and high stability for high-CRI white light-emitting devices

The exploration of highly efficient and stable red-emitting materials is crucial for white light-emitting devices with a high color rendering index (CRI), Eu³⁺-activated phosphors with garnet structures hold significant promise in this regard. In this study, we developed a novel Ca₂LaTiAl₃O₁₂(CLTA):Eu³⁺ red phosphor with high brightness and a photoluminescence quantum yield (PLQY) of 65 % using a one-step solid-state reaction method. This phosphor exhibits excellent photostability, high thermal stability, and impressive fluorescence recovery, indicating its suitability for LED packaging. Utilizing the optimized CLTA:Eu³⁺ which is cost-effective, the fabricated LEDs achieve a high CRI of 91.6 demonstrating strong potential for WLED applications.

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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.