用于白光LED和室内植物生长的新型Na3KMg7(PO4)6: RE3+ (RE = Eu, Dy, Tb)荧光粉的合成及多色发光性能

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Optical Materials Pub Date : 2025-05-01 Epub Date: 2025-03-06 DOI:10.1016/j.optmat.2025.116887

Y.Q. Lin , X. Bai , F.B. Xiong , Z.K. Hu , M.M. Li , Q.Q. Zhuang , Z.J. Cheng

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引用次数: 0

摘要

采用高温固相反应法制备了新型荧光粉Na3KMg7(PO4)6: RE3+ (RE = Eu, Dy, Tb)。利用x射线衍射（XRD）、扫描电镜（SEM）、光致发光（PL）激发和发射光谱、衰变寿命和温度相关的PL发射光谱对这些合成样品进行了表征。在紫外光激发下，Na3KMg7(PO4)6: Eu3+、Na3KMg7(PO4)6: Dy3+和Na3KMg7(PO4)6: Tb3+分别在696 nm （5D0→7F4跃迁）、478 nm （4F9/2→6H15/2跃迁）和572 nm （4F9/2→6H13/2跃迁）和540 nm （5D4→7F5跃迁）表现出Eu3+、Dy3+的特征发射。Na3KMg7(PO4)6: Eu3+与光敏色素光敏色素PR和PFR的发射光谱匹配良好。Na3KMg7(PO4)6: RE3+ (RE = Eu, Dy, Tb)的浓度猝灭分别归因于偶极-四极、偶极-偶极和偶极-偶极电多极相互作用。这些荧光粉表现出良好的热稳定性，在453 K时保持了85%以上的室温发射强度。这些结果表明，Na3KMg7(PO4)6: RE3+ (RE = Eu, Dy, Tb)是一种新型的多色发光荧光粉，在白光LED和室内植物生长方面具有很大的应用潜力。

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Synthesis and multi-color emission properties of novel Na3KMg7(PO4)6: RE3+ (RE = Eu, Dy, Tb) phosphor for white LED and indoor plant growth

Novel phosphors Na₃KMg₇(PO₄)₆: RE³⁺ (RE = Eu, Dy, Tb) were successfully synthesized via a high temperature solid-state reaction method. The X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) excitation and emission spectra, decay lifetimes and temperature-dependent PL emission spectra were utilized to characterize these as-synthesized samples. Under UV light excitation, Na₃KMg₇(PO₄)₆: Eu³⁺, Na₃KMg₇(PO₄)₆: Dy³⁺, and Na₃KMg₇(PO₄)₆: Tb³⁺ exhibited the characteristic emission of Eu³⁺ at 696 nm (the ⁵D₀→⁷F₄ transition), Dy³⁺ at 478 nm (the ⁴F_9/2 → ⁶H_15/2 transition) and 572 nm (the ⁴F_9/2 → ⁶H_13/2 transition), and Tb³⁺ at 540 nm (the ⁵D₄→⁷F₅ transition), respectively. The emission bands of Na₃KMg₇(PO₄)₆: Eu³⁺ matched well with the photosensitive pigments phytochrome P_R and P_FR. The concentration quenching of Na₃KMg₇(PO₄)₆: RE³⁺ (RE = Eu, Dy, Tb) were attributed to be the dipole-quadrupole, dipole-dipole and dipole-dipole electric multipole interactions, respectively. These phosphors exhibited good thermal stability and maintained above 85 % of their room-temperature emission intensities at 453 K. These results demonstrated that Na₃KMg₇(PO₄)₆: RE³⁺ (RE = Eu, Dy, Tb) as novel multi-color emitting phosphors have a great potential application in white LED and indoor plant growth.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.