Luminescence and Cationic-Size-Driven Site Selection of Eu3+ and Ce3+ Ions in Ca8Mg(SiO4)4Cl2
文献类型：期刊论文
| 作者 | Brik, Mikhail G.; Ou, Yiyi; Zhou, Weijie; Tao Y(陶冶) ; Liang, Hongbin; Tao, Ye; Srivastava, Alok M.; Li, Xiaohui
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| 刊名 | INORGANIC CHEMISTRY
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：高能物理研究所
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