Luminescence and Cationic-Size-Driven Site Selection of Eu3+ and Ce3+ Ions in Ca8Mg(SiO4)4Cl2

doi:10.1021/acs.inorgchem.8b02639

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	Luminescence and Cationic-Size-Driven Site Selection of Eu3+ and Ce3+ Ions in Ca8Mg(SiO4)4Cl2
	Brik, Mikhail G.; Ou, Yiyi; Zhou, Weijie; Tao Y(陶冶); Liang, Hongbin; Tao, Ye; Srivastava, Alok M.; Li, Xiaohui
刊名	INORGANIC CHEMISTRY
	2018
卷号	57 期号:23 页码:14872-14881
ISSN号	0020-1669
DOI	10.1021/acs.inorgchem.8b02639
文献子类	Article
英文摘要	In this work, the morphology, composition, crystal, and electronic structure of Ca8Mg(SiO4)(4)Cl-2 (CMSOC) prepared by a high-temperature solid-state reaction technique are characterized first. To investigate the site occupancies of Eu3+ and Ce3+ in CMSOC, the emission spectra under well-chosen wavelength excitations and the corresponding excitation spectra by monitoring of the specific wavelength emissions are measured in detail for singly doped samples with different concentrations. Two kinds of Eu3+ or Ce3+ luminescence spectra are found. On the basis of the chemical environments of two Ca2+ sites and dielectric chemical bond theory, the sites of these two kinds of Eu3+ and Ce3+ luminescence spectra are respectively assigned. Because energy transfer between the two types of luminescent centers, concentration-dependent emission-wavelength shifting, and luminescence concentration quenching are negligible, the emission spectra of Eu3+ and Ce3+ give us a hint of their occupation preferences on two Ca2+ sites. The results indicate that, with an increase of the doping concentration, the Eu3+ ions with smaller cationic size show an occupation preference on the smaller Ca2+(1) sites, but the Ce3+ ions with larger cationic size are inclined to enter the larger Ca2+ (2) sites. These opposite occupation preferences of Eu3+ and Ce3+ in CMSOC are thought to be the cationic-size-driven site selection.
电子版国际标准刊号	1520-510X
WOS关键词	CHARGE-TRANSFER ENERGY ; OPTICAL-PROPERTIES ; BOND COVALENCY ; PHOTOLUMINESCENCE ; SPECTROSCOPY ; OCCUPANCIES ; IONICITIES ; DEPENDENCE ; PHOSPHORS ; PR3+
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000452344400047
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286867]
专题	高能物理研究所_核技术应用研究中心高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Brik, Mikhail G.,Ou, Yiyi,Zhou, Weijie,et al. Luminescence and Cationic-Size-Driven Site Selection of Eu3+ and Ce3+ Ions in Ca8Mg(SiO4)4Cl2[J]. INORGANIC CHEMISTRY,2018,57(23):14872-14881.
APA	Brik, Mikhail G..,Ou, Yiyi.,Zhou, Weijie.,陶冶.,Liang, Hongbin.,...&Li, Xiaohui.(2018).Luminescence and Cationic-Size-Driven Site Selection of Eu3+ and Ce3+ Ions in Ca8Mg(SiO4)4Cl2.INORGANIC CHEMISTRY,57(23),14872-14881.
MLA	Brik, Mikhail G.,et al."Luminescence and Cationic-Size-Driven Site Selection of Eu3+ and Ce3+ Ions in Ca8Mg(SiO4)4Cl2".INORGANIC CHEMISTRY 57.23(2018):14872-14881.