Luminescence Enhancement of Red-Emitting Sr9MnK(PO4)7 Phosphor via Energy Transfer and Charge Compensation,Physica Status Solidi (B) - Basic Solid State Physics

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Luminescence Enhancement of Red-Emitting Sr9MnK(PO4)7 Phosphor via Energy Transfer and Charge Compensation
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2022-07-28 , DOI: 10.1002/pssb.202200259
Guangyong Xie ₁ , Ming Wu ₂ , Tingcheng Li ₁ , Qingliang You ₃ , Wanjun Tang ₁

Affiliation

It is an urgent need to explore high-efficiency and high-purity red-emitting phosphors in white light-emitting diodes (LEDs) application. Herein, the synthesis and luminescence properties of Mn-based Sr₉MnK(PO₄)₇ phosphor are reported. X-ray diffraction (XRD) measurement and Rietveld structural refinement confirm that Sr₉MnK(PO₄)₇ is crystallized in the trigonal Sr₉Fe_1.5(PO₄)₇ type structure with the space group of

R \bar{3} m

(166). Eu²⁺-doped Sr₉MnK(PO₄)₇ phosphor exhibits a broad excitation spectrum peaked at 394 nm and emits bright reddish-orange light centered at 610 nm. Moreover, the introduction of the Ce³⁺ ion substantially enhances the intensity of Mn²⁺ emission. Here, Ce³⁺ acts as a charge compensator rather than a sensitizer, as confirmed by spectral analysis and various chemical techniques. On the base of the energy transfer between Eu²⁺ and Mn²⁺ coupled with charge compensation, a high-brightness red-emitting Sr₉MnK(PO₄)₇:Eu²⁺,Ce³⁺ phosphor is obtained.

中文翻译：

通过能量转移和电荷补偿增强发红光的 Sr9MnK(PO4)7 荧光粉的发光

迫切需要探索高效、高纯度的红色荧光粉在白光发光二极管（LED）中的应用。_{在此，报道了基于Mn的Sr 9} MnK(PO ₄ ) ₇荧光粉的合成和发光性质。X射线衍射(XRD)测量和Rietveld结构细化证实Sr ₉ MnK(PO ₄ ) ₇以三角Sr ₉ Fe _1.5 (PO ₄ ) ₇型结构结晶，空间群为

R \bar{3个} 米

（166）。Eu ²⁺掺杂的Sr ₉ MnK(PO ₄ ) ₇磷光体表现出峰值在394nm处的宽激发光谱并且发射以610nm为中心的明亮的红橙色光。此外，Ce ³⁺离子的引入显着增强了Mn ²⁺发射的强度。在这里，Ce ³⁺充当电荷补偿器而不是敏化剂，如光谱分析和各种化学技术所证实的那样。^{基于Eu 2+}和Mn ²⁺之间的能量转移和电荷补偿，高亮度红光Sr ₉ MnK(PO ₄ ) ₇ :Eu^得到2+ ,Ce ³⁺荧光粉。

更新日期：2022-07-28

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