New insight into the structure evolution and site preferential occupancy of Na₂Ba₆(Si₂O₇)(SiO₄)₂:Eu²⁺ phosphor by cation substitution effect

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• 作者：Yingli Zhu^a ; ^b ; Yujun Liang^a ; ^b ; ^{yujunliang@sohu.com} ; Shiqi Liu^a ; ^b ; Xingya Wu^a ; ^b ; Rui Xu^a ; ^b ; Kai Li^a ; ^b
• 关键词：Cation substitution ; Crystal structure ; Na2Ba6(Si2O7)(SiO4)2 ; Eu2+ ; Structural evolution ; Preferential occupancy ; Luminescence
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：25 March 2017
• 年：2017
• 卷：698
• 期：Complete
• 页码：49-59
• 全文大小：3766 K
• 卷排序：698

文摘

Na2Ba6(Si2O7)(SiO4)2:Eu2+ with Ba substitute by Mg or Zn were firstly reported. Structure of Na2Ba6(Si2O7)(SiO4)2 showed regular changes with introducing Mg and Zn. The Eu emissions at three cation sites varied regularly with increasing Mg and Zn. The PL mechanism was preferential occupancy of Eu2+ at different cation sites. The introduction of Mg and Zn improved the thermal stability of phosphors.