Theoretical and experimental investigation of BaY2(MoO4)4:xSm3+ phosphors

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-11-06 DOI:10.1016/j.jlumin.2024.120968

Weiguang Ran, Zicheng Zhang, Fukai Wang, Huixin Jiang, Yue Shao, Xiaoli Ma, Jiayi Geng, Tingjiang Yan

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Abstract

In this paper, the novel BaY₂(MoO₄)₄:xSm³⁺ phosphors with strong red emission and high thermal stabilization were prepared by a conventional method of high temperature solid state reaction in air atmosphere. Morphology, phase purity, element distribution, UV–Vis–NIR diffuse reflectance spectroscopy (DRS), and luminescence properties were investigated in detail. The crystal structure of the BaY₂(MoO₄)₄ host was refined with the aid of the Rietveld refinement method by the GSAS program. The electronic band structure and phonon dispersion were performed using plane-wave density functional theory (DFT). The prepared BaY₂(MoO₄)₄:Sm³⁺ phosphor exhibits excellent red emission under near-ultraviolet excitation. Strong red emission intensity and high thermal stability suggest potential application in backlighting or phosphor-covered white light-emitting diodes (pc-LEDs).

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BaY2(MoO4)4:xSm3+ 荧光粉的理论和实验研究

本文采用空气气氛下高温固态反应的传统方法制备了具有强红色发射和高热稳定性的新型 BaY2(MoO4)4:xSm3+ 荧光粉。详细研究了荧光粉的形态、相纯度、元素分布、紫外-可见-近红外漫反射光谱（DRS）和发光特性。借助 GSAS 程序中的里特维尔德精炼法，对 BaY2(MoO4)4 主晶的晶体结构进行了精炼。利用平面波密度泛函理论（DFT）对电子能带结构和声子色散进行了研究。制备的 BaY2(MoO4)4:Sm3+荧光粉在近紫外激发下具有优异的红色发射性能。较强的红色发射强度和较高的热稳定性表明，这种荧光粉有望应用于背光源或荧光粉包覆白光发光二极管（pc-LED）。

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.