LiMAlF_6(M=Ca,Sr)基质中Ce^3+、Eu^3+、Tb^3+的光谱研究

LUMINESCENCES OF SEVERAL RARE EARTH IN LiMAlF6(M=Ca, Sr)

合成了Ｃｅ３＋、Ｅｕ３＋、Ｔｂ３＋激活的ＬｉＭＡｌＦ６（Ｍ＝Ｃａ，Ｓｒ）磷光体，研究了它们的光谱特性．观察到稀土离子在ＬｉＣａＡｌＦ６和ＬｉＳｒＡｌＦ６中的光谱十分相似．这与它们所处的晶场环境相同有关．发现Ｃｅ３＋在此基质中有较弱的３３０ｎｍ发射，这一Ｃｅ３＋的发光中心可用于作为材料质量的评价．

y hightemperature solid state reaction, LiMAlF6(M=Ca,Sr) was synthesized. The luminescence properties of Ce3+, Eu3+, Tb3+ were investigated. It was found that the spectra of Ce3+, Eu3+, Tb3+ in LiCaAlF6 are similar to that in LiSrAlF6, which is due to similar surroundings of host. It was also found that there exists weak peak of Ce3+ at 330nm in LiMAlF6∶Ce. This peak can be used to evaluate the quality of material.