Optical Properties of Ce-Doped Li4SrCa(SiO4)(2): A Combined Experimental and Theoretical Study

doi:10.1021/acs.inorgchem.7b02561

	Optical Properties of Ce-Doped Li4SrCa(SiO4)(2): A Combined Experimental and Theoretical Study
	Lin, LT; Liu, CM; Huang, Y; Zheng, LR; Ning, LX; Liang, HB; Huang Y(黄艳); Zheng LR(郑黎荣); Shi, R; Huang, XX
刊名	INORGANIC CHEMISTRY
	2018
卷号	57 期号:3 页码:1116-1124
ISSN号	0020-1669
DOI	10.1021/acs.inorgchem.7b02561
文献子类	Article
英文摘要	Investigation of optical properties of Ce3+-activated phosphors is not only of practical importance for various applications but also of fundamental importance for providing a basis to understand relevant properties of other lanthanide ions in the same host. We report herein a combined experimental and theoretical study of optical properties of Ce3+ in Li4SrCa(SiO4)(2). Photoluminescence properties of the material prepared by a solid-state reaction method are investigated with excitation energies in the vacuum-ultraviolet (VUV) to ultraviolet (UV) range at low temperatures. The band maxima in the excitation spectra are assigned with respect to 4f -> 5d transitions of Ce3+ at the Sr and Ca sites, from comparison between experimental and ab initio predicted transition energies. As a result of the two-site occupation, the material displays luminescence at 300-500 nm with a high thermal quenching temperature (>500 K), consistent with the calculated large gaps (similar to 1.40 eV) between the emitting 5d levels and the bottom of the host conduction band. On the basis of experimental and calculated results for Ce3+ in Li4SrCa(SiO4)(2), the energy-level diagram for the 4f ground states and the lowest 5d states of all trivalent and divalent lanthanide ions at the Sr and Ca sites of the same host is constructed and discussed in association with experimental findings.
电子版国际标准刊号	1520-510X
WOS关键词	4F-ELECTRON BINDING-ENERGIES ; AUGMENTED-WAVE METHOD ; CHARGE-TRANSFER ; LUMINESCENCE PROPERTIES ; INORGANIC-COMPOUNDS ; CORE POTENTIALS ; BAND-GAP ; LANTHANIDE ; PHOSPHORS ; EU2+
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000424730800026
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285677]
专题	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	Lin, LT,Liu, CM,Huang, Y,et al. Optical Properties of Ce-Doped Li4SrCa(SiO4)(2): A Combined Experimental and Theoretical Study[J]. INORGANIC CHEMISTRY,2018,57(3):1116-1124.
APA	Lin, LT.,Liu, CM.,Huang, Y.,Zheng, LR.,Ning, LX.,...&Liu, TT.(2018).Optical Properties of Ce-Doped Li4SrCa(SiO4)(2): A Combined Experimental and Theoretical Study.INORGANIC CHEMISTRY,57(3),1116-1124.
MLA	Lin, LT,et al."Optical Properties of Ce-Doped Li4SrCa(SiO4)(2): A Combined Experimental and Theoretical Study".INORGANIC CHEMISTRY 57.3(2018):1116-1124.