Tunable Photoluminescence Properties and Energy Transfer of Ba3YB9O18:Tb3+, Eu3+ Phosphors

Zhi-hua LENG; Zhe TAN; Shu-hong LIU

doi:10.37188/CJL.20200260

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Tunable Photoluminescence Properties and Energy Transfer of Ba₃YB₉O₁₈:Tb³⁺, Eu³⁺ Phosphors

Synthesis and Properties of Materials | 更新时间：2021-01-12

- Tunable Photoluminescence Properties and Energy Transfer of Ba₃YB₉O₁₈:Tb³⁺, Eu³⁺ Phosphors
- Chinese Journal of Luminescence Vol. 42, Issue 1, Pages: 83-90(2021)
- 作者机构：
  
  1.西安建筑科技大学化学与化工学院, 陕西西安 710055
  2.吉林大学化学学院, 吉林长春 130012
- 作者简介：
- 基金信息：
  
  the the Natural Science Foundation of Shaanxi Provincial Department of Education
- DOI：10.37188/CJL.20200260
  CLC：
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Zhi-hua LENG, Zhe TAN, Shu-hong LIU. Tunable Photoluminescence Properties and Energy Transfer of Ba₃YB₉O₁₈:Tb³⁺, Eu³⁺ Phosphors. [J]. Chinese Journal of Luminescence 42(1):83-90(2021)
DOI：

Zhi-hua LENG, Zhe TAN, Shu-hong LIU. Tunable Photoluminescence Properties and Energy Transfer of Ba₃YB₉O₁₈:Tb³⁺, Eu³⁺ Phosphors. [J]. Chinese Journal of Luminescence 42(1):83-90(2021) DOI： 10.37188/CJL.20200260.

摘要

利用高温固相法制备了一系列发光颜色可调的Ba,3,YB,9,O,18,：Tb,3+,，Eu,3+,荧光粉。采用X射线衍射（XRD）、透射电子显微镜（TEM）研究了所得荧光粉的相纯度和晶体结构。XRD精修结果表明，当Y,3+,被Eu,3+,取代时，Ba,3,YB,9,O,18,：Tb,3+,，Eu,3+,系列样品的线性结构变化能很好地符合Vegard定律。此外，通过发射光谱和荧光寿命验证了Ba,3,YB,9,O,18,：Tb,3+,，Eu,3+,荧光粉中Tb,3+,到Eu,3+,的能量传递过程。Tb,3+,到Eu,3+,的能量传递机理为偶极-偶极相互作用。随着Eu,3+,掺杂量的增加，荧光粉的发光颜色可以由绿色逐渐过渡到红色。这些结果表明合成的Ba,3,YB,9,O,18,：Tb,3+,，Eu,3+,荧光粉在紫外光激发的固态照明领域具有潜在的应用前景。

Abstract

A series of Ba,3,YB,9,O,18,:Tb,3+, Eu,3+, phosphors with tunable photoluminescence were successfully prepared by solid state reaction. X-ray diffraction(XRD) and transmission electron microscopy(TEM) were utilized to investigate the phase purity and crystal structure of the as-obtained phosphors. The XRD refinement results demonstrate that the linear structural evolution of Ba,3,YB,9,O,18,:Tb,3+, Eu,3+, solid-solutions obeys excellent Vegard's rule when Y,3+, were substituted by Eu,3+, ions. Moreover, the energy transfer process from Tb,3+, to Eu,3+, in Ba,3,YB,9,O,18,:Tb,3+, Eu,3+, phosphors was verified by emission spectra and decay curves. The energy transfer mechanism from Tb,3+, to Eu,3+, was proved to be the electric dipole-dipole interaction. Due to the energy transfer process from Tb,3+, to Eu,3+, the color tones can be gradually adjusted from green to red with increasing Eu,3+, doping content. These results manifest that the as-synthesized Ba,3,YB,9,O,18,:Tb,3+, Eu,3+, phosphors may find potential applications for UV excited solid state lighting.

关键词

Ba3YB9O18光致发光能量传递荧光粉

Keywords

Ba3YB9O18photoluminescenceenergy transferphosphors

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