Investigation of the Luminescent Properties of Tb3 + -Substituted YAG:Ce, Gd Phosphors
Investigation of the Luminescent Properties of Tb3 + -Substituted YAG:Ce, Gd Phosphors
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DOI：
10.1149/1.1896307
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发表时间：
2005-06
影响因子：
3.9
通讯作者：
Y. S. Lin;Ru‐Shi Liu;B. Cheng
中科院分区：
文献类型：
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作者：
Y. S. Lin;Ru‐Shi Liu;B. Cheng
由半导体二极管和Ce 3 + /Gd 3 +掺杂的钇铝石榴石（YAG：Ce，Gd）组成的荧光粉系统，通过适当的发光组合，可以获得接近日光的、具有良好显色指数的白色光。本文报道了Tb 3 +掺杂YAG：Ce，Gd的晶体结构和发光性能.随着Tb 3 +含量的增加，YAG的晶格常数增大，发光光谱发生红移。我们还研究了这些荧光粉使用真空紫外激发未来的等离子体显示器应用的发光性能。我们提出了从YAG基质到Tb 3 +和Ce 3 +离子的能量迁移的可能机制。
Generation of white light closer to daylight with good color-rendering index properties can be achieved with the proper combination of emissions from the phosphor system consisting of semiconductor diode and Ce 3 + /Gd 3 + -doped yttrium aluminum garnet (YAG: Ce, Gd). Here, we report crystal structure and luminescent properties of Tb 3 + -substituted YAG: Ce, Gd. The values of lattice constant increases and the photoluminescent spectrum shows red emission shift, as the Tb 3 + content increases in YAG. We also studied luminescent properties of these phosphors using vacuum ultraviolet excitation for future plasma display panel applications. We propose a possible mechanism for the energy migration from YAG host to Tb 3 + and Ce 3 + ions.