期刊
RSC ADVANCES
卷 6, 期 62, 页码 S7261-S7265出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra11681g
关键词
-
资金
- National Natural Science Foundation of China [NSFC 21301162, 21571162, 60977013, 91433110, U1301242, 21221061]
- National College Students' Innovative Training Program [201510491109, 201610491067, 201610491070]
- Ministry of Science and Technology of Taiwan [MOST 104-2917-1-564-060]
- South University of Science and Technology of China [FRG-SUSTC1501A-17]
In this paper, we present new insight into a changing Eu2+ crystallographic site preference in Eu-doped M-5(Si3O9)(2) (M = Sr, Ba, Y, Mn), which is related to the structural variation induced by M cation substitutions. The effect of the local structural geometry on the luminescence properties of Eu2+ is revealed. By substitution of Ba2+ for Sr2+, the lattice expansion is restricted to specific cation sites, resulting in the abrupt blue shifted emission of Eu2+ ions. The abnormal blue shift on replacing Sr2+ with Mn2+ is attributed to the preferential 6-fold coordination for Mn2+ that moves the Eu2+ ions to other sites. The results elucidate the mechanisms of emission band adjustment by local site coordination change and it can be potentially extended to crystals which properties are sensitive to local lattice variations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据