Structural consideration on the emission properties of Eu{sup 2+}-doped Li{sub 2}BaMgP{sub 2}O{sub 8} and Na{sub 2}BaMgP{sub 2}O{sub 8} orthophosphates
Structural consideration on the emission properties of Eu{sup 2+}-doped Li{sub 2}BaMgP{sub 2}O{sub 8} and Na{sub 2}BaMgP{sub 2}O{sub 8} orthophosphates
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Eu{sup 2 }掺杂Li{sub 2}BaMgP{sub 2}O{sub 8}和Na{sub 2}BaMgP{sub 2}O{sub 8}正磷酸盐发射性能的结构考虑
DOI：
10.1016/j.jssc.2012.07.001
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发表时间：
2012
影响因子：
3.3
通讯作者：
Q. Dong
中科院分区：
文献类型：
--
作者：
Chihiro Matsuda;Q. Dong
采用标准固相反应法合成了Li 2BaMgP 2 O 8和Na 2BaMgP 2 O 8。结构分析表明，Li 2BaMgP 2 O 8与Na 2BaMgP 2 O 8一样，都是醇溶物家族的成员。层状结构由MgO 6八面体和PO 4四面体围绕C3轴扭转形成，以匹配B位阳离子（Li+或Na+）的大小。这种扭曲影响B位阳离子的配位数和晶胞尺寸。Eu掺杂的Li 2BaMgP 2 O 8和Na 2BaMgP 2 O 8在紫外光激发下呈现出强烈的紫蓝色发光。它们的特征在于由两个发射中心; Eu 2+离子取代A位阳离子（Ba 2+）和B位阳离子（Li+或Na+）。B位Eu ~（2+）发光对B位阳离子的扭曲行为非常敏感。
Li2BaMgP2O8and Na2BaMgP2O8were synthesized by a standard solid state reaction. Structural analyses have revealed that Li2BaMgP2O8is a member of the olgite family, as is the case with Na2BaMgP2O8. The layer-framework build up by corner-sharing MgO6octahedra and PO4tetrahedra twists around C3axes to match the size of B-site cation (Li+or Na+). This twisting affects the coordination number for the B-site cation and unit cell size. Eu-doped Li2BaMgP2O8and Na2BaMgP2O8exhibited intense violet–blue emission under ultraviolet excitation. They were characterized by two emission centers; Eu2+ions replacing A-site cations (Ba2+) and B-site cations (Li+or Na+). The B-site Eu2+emission was very sensitive to the twisting behavior caused by original B-site cation.