Luminescence tuning of Ce~(3+), Pr~(3+) activated (Y,Gd)AGG system by band gap engineering and energy transfer
Luminescence tuning of Ce~(3+), Pr~(3+) activated (Y,Gd)AGG system by band gap engineering and energy transfer
复制标题
带隙工程和能量转移对 Ce~(3 )、Pr~(3 ) 激活 (Y,Gd)AGG 体系的发光调谐
DOI：
10.1016/i.ire.2020.01.001
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发表时间：
2020
影响因子：
4.9
通讯作者：
Liang Hongbin
中科院分区：
文献类型：
--
作者：
Ou Yiyi;Zhou Weijie;Ma Fengkai;Liu Chunmeng;Zhou Rongfu;Su Fang;Huang Yan;Dorenbos Pieter;Liang Hongbin
调谐荧光粉的发光性能，包括发射能量/强度和热稳定性，是开发适用于各种应用的优质发光材料的重要途径。本文讨论了带隙工程和能量转移对Ce~(3+)或Pr~(3+)掺杂(Y，Gd)AgG体系发光性能的影响，并分析了它们不同现象的根本原因。利用VUV-UV激发光谱和构造VRBE方法，研究了Ce~(3+)和Pr~(3+)离子掺入Gd~(3+)离子后，Ce~(3+)和Pr~(3+)的主带结构、5d激发能级和发射热稳定性的变化。此外，还根据发光衰减曲线研究了能量传递动力学。这项工作展示了一种将带隙工程和能量转移剪裁相结合来调节荧光粉发光性能的方法，并对Gd~(3+)掺杂对Ce~(3+)和Pr~(3+)发光的不同结果进行了鼓舞人心的讨论。
Tuning of phosphor luminescence properties, including the emission energy/intensity and thermal stability, is an important way to develop superior luminescent materials for diverse applications. In this work, we discuss the effect of band gap engineering and energy transfer on the luminescence properties of Ce~(3+) or Pr~(3+) doped (Y,Gd)AGG systems, and analyze the underlying reasons for their different phenomena. By using VUV-UV excitation spectra and constructing VRBE schemes, the changes of host band structure, 5d excited level energies and emission thermal stability of Ce~(3+) and Pr~(3+) with the incorporation of Gd~(3+) ions were studied. In addition, the energy transfer dynamics was also investigated in terms of the luminescence decay curves. This work demonstrates a way to tune phosphor luminescence properties by combining band gap engineering and energy transfer tailoring and provides an inspiring discussion on the different results of Gd~(3+) doping on the Ce~(3+) and Pr~(3+) emissions.