Unveiling Structural, Morphological, Optical Properties and Photoluminescence of Novel Eu3+ and Tb3+ Doped Na2MoO4.2H2O Phosphor

IF 3.2 4区化学 Q2 CHEMISTRY, ANALYTICAL

Luminescence Pub Date : 2025-05-19 DOI:10.1002/bio.70197

Akesh Kumar, Nameeta Brahme, D. P. Bisen, Kanchan Tiwari, Dipti Sahu

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引用次数: 0

Abstract

The present paper explores the luminescence response of trivalent rare earth ions doped novel Na₂MoO₄.2H₂O phosphors for its possibilities towards the advancement of currently available red and green phosphors. The work presents an original research study on Na₂MoO₄.2H₂O phosphors and provides a brief overview of molybdate-based phosphors. Optically efficient trivalent terbium and europium-activated Na₂MoO₄.2H₂O phosphors are synthesized using the conventional solid-state reaction method. It was found through XRD that the samples belong to the orthorhombic crystal system and have the space group P_bca. Raman spectra show all the major peaks are rising due to the MoO4²⁻ group. The SEM images reveal differences in particle morphology between the undoped and doped samples. UV–Visible spectroscopy showed the interaction of samples with light and the bandgap energies were calculated. We record the excitation and emission spectra to see how much red and green light they emit for Eu and Tb doped samples respectively. The calculated CIE coordinates, CCT and colour purity show that the phosphor is similar to commercially available red and green phosphors. Along with that, this study shows the energy transfer between MoO4 and rare earth dopants, which can help us figure out how to improve emission efficiency.

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揭示新型Eu3+和Tb3+掺杂Na2MoO4.2H2O荧光粉的结构、形态、光学性质和光致发光

本文探讨了三价稀土离子掺杂新型Na2MoO4.2H2O荧光粉的发光响应，为目前可用的红色和绿色荧光粉的发展提供了可能性。本文介绍了Na2MoO4.2H2O荧光粉的原初研究，并简要介绍了钼酸盐基荧光粉的研究概况。采用传统的固相反应方法合成了光学高效的三价铽和铕活化的Na2MoO4.2H2O荧光粉。通过XRD分析发现，样品属于正交晶系，具有空间基Pbca。拉曼光谱显示，由于MoO42−基团的作用，所有的主峰都在上升。SEM图像显示了未掺杂和掺杂样品在颗粒形态上的差异。紫外可见光谱显示了样品与光的相互作用，并计算了带隙能。我们记录了Eu和Tb掺杂样品的激发和发射光谱，看看它们分别发射了多少红光和绿光。计算的CIE坐标、CCT和颜色纯度表明，该荧光粉与市售的红色和绿色荧光粉相似。同时，本研究显示了MoO4与稀土掺杂剂之间的能量传递，这有助于我们了解如何提高发射效率。

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

Luminescence 生物-生化与分子生物学

CiteScore

5.10

自引率

13.80%

发文量

248

审稿时长

3.5 months

期刊介绍： Luminescence provides a forum for the publication of original scientific papers, short communications, technical notes and reviews on fundamental and applied aspects of all forms of luminescence, including bioluminescence, chemiluminescence, electrochemiluminescence, sonoluminescence, triboluminescence, fluorescence, time-resolved fluorescence and phosphorescence. Luminescence publishes papers on assays and analytical methods, instrumentation, mechanistic and synthetic studies, basic biology and chemistry. Luminescence also publishes details of forthcoming meetings, information on new products, and book reviews. A special feature of the Journal is surveys of the recent literature on selected topics in luminescence.