Comparative investigation of structural, morphological and temperature-dependent photoluminescence characteristics of trivalent rare-earth-activated NaCaPO4 phosphors for solid-state lighting applications

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-09-23 DOI:10.1016/j.jlumin.2024.120901

Mudasir Farooq , Haqnawaz Rafiq , Irfan Nazir , Ab Mateen Tantray , Hameed Younis , Mir Hashim Rasool

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引用次数: 0

Abstract

This study explores the synthesis, structure, morphology, and photoluminescence features of trivalent RE³⁺-activated NaCaPO₄ phosphors, aiming to develop phosphor materials for white-light-emitting diode (WLED) applications. Single-phase polycrystalline NaCa_(1-x) RE_x³⁺ PO₄ (RE_x³⁺ = Sm, Eu, Dy, and Tb) phosphor materials with various RE_x³⁺-doping percentiles were produced by a solid-state reaction process, which were analyzed using various characterization techniques. The FullProf Suite software program was used for phase evidence and crystalline structure analysis, confirming the composition of orthorhombic materials as a single phase. FE-SEM micrographs revealed asymmetrically stacked morphologies across all the compositions. This study reveals that trivalent RE³⁺-activated phosphors produced exceptional PL outcomes. Dexter's and Blasse's approaches were used to establish the interaction mechanisms and critical energy transfer ranges as dipole-dipole. Lifetime decay patterns were used to fit a bi-exponential function and the resulting values were approximated in milliseconds. This study reveals that trivalent RE³⁺-activated NaCaPO₄ phosphors, with their thermal resilience and color integrity, have potential applications in solid-state lighting (SSL) technology.

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用于固态照明应用的三价稀土活化 NaCaPO4 荧光粉的结构、形态和温度依赖性光致发光特性的比较研究

本研究探讨了三价 RE3+ 活化 NaCaPO4 荧光粉的合成、结构、形态和光致发光特性，旨在开发白光发光二极管（WLED）用荧光粉材料。采用固态反应工艺制备了具有不同 REx3+ 掺杂百分位数的单相多晶 NaCa(1-x) REx3+ PO4（REx3+ = Sm、Eu、Dy 和 Tb）荧光粉材料，并使用各种表征技术对其进行了分析。使用 FullProf Suite 软件程序进行了相证和晶体结构分析，确认了正交材料作为单相的组成。FE-SEM 显微照片显示了所有成分的不对称堆叠形态。这项研究表明，三价 RE3+ 激活的荧光粉能产生优异的聚光效果。利用 Dexter 和 Blasse 方法建立了相互作用机制和偶极-偶极临界能量转移范围。寿命衰减模式被用来拟合双指数函数，得出的数值以毫秒为近似单位。这项研究表明，三价 RE3+ 激活的 NaCaPO4 荧光粉具有热弹性和色彩完整性，在固态照明 (SSL) 技术中具有潜在的应用价值。

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.