A novel green emitting NaGdF4:Dy3+,Ho3+ phosphor with tunable photoluminescence,New Journal of Chemistry

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A novel green emitting NaGdF4:Dy3+,Ho3+ phosphor with tunable photoluminescence
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020-09-04 , DOI: 10.1039/d0nj03030a
Hongxia Guan _{1,

2,

3} , Yunfei Li _{3,

4,

5,

6} , Guixia Liu _{3,

7,

8,

9}

Affiliation

Dy³⁺- and/or Ho³⁺-doped NaGdF₄ luminescence nanoparticles have been successfully synthesized using a citric acid-assisted one-step hydrothermal method. The samples were characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), X-ray energy dispersive spectroscopy (EDS) and photoluminescence (PL) spectra. The results showed that the synthesized samples were all pure β-NaGdF₄. The obtained samples had several nanoparticles shaped with diameters of ∼170 nm. Moreover, there was an efficient energy transfer from Dy³⁺ to Ho³⁺ ions. In terms of the experimental results and analysis, the occurrence of this energy transfer mechanism was proposed. Moreover, the obtained phosphors could be used as green phosphors; thus, it is clear that these Dy³⁺,Ho³⁺ co-doped β-NaGdF₄ nanomaterials may have potential applications in the field of full-color displays.

中文翻译：

具有可调光致发光的新型绿色发射NaGdF4：Dy3 +，Ho3 +荧光粉

使用柠檬酸辅助的一步水热法已成功合成了Dy ³⁺和/或Ho ³⁺掺杂的NaGdF ₄发光纳米粒子。使用X射线衍射（XRD），场发射扫描电子显微镜（FE-SEM），X射线能量色散光谱（EDS）和光致发光（PL）光谱对样品进行表征。结果表明，所合成的样品均为纯β-NaGdF ₄。获得的样品具有数个直径约为170 nm的纳米颗粒。此外，从Dy ³⁺到Ho ^3+的能量转移效率很高离子。根据实验结果和分析，提出了这种能量转移机理的发生。另外，所得的荧光体可以用作绿色荧光体。因此，很明显的是，这些的Dy ³⁺，何³⁺共掺杂-β-NaGdF ₄纳米材料可具有全彩色显示器的领域的应用潜力。

更新日期：2020-09-28

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