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

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

引用次数: 0

Abstract

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.