Tuning oxygen vacancy photoluminescence in monoclinic Y2WO6 by selectively occupying yttrium sites using lanthanum
文献类型：期刊论文
| 作者 | Ding, BF; Han, C; Zheng LR(郑黎荣) ; Zheng, LR; Zhang, JY; Wang, RM; Tang, ZL
|
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2015 |
| 卷号 | 5页码:9443 |
| 英文摘要 | The effect of isovalent lanthanum (La) doping on the monoclinic Y2WO6 photoluminescence was studied. Introducing the non-activated La3+ into Y2WO6 brings new excitation bands from violet to visible regions and strong near-infrared emission, while the bands position and intensity depend on the doping concentration. It is interesting to find that doping La3+ into Y2WO6 promotes the oxygen vacancy formation according to the first-principle calculation, Raman spectrum, and synchrotron radiation analysis. Through the Rietveld refinement and X-ray photoelectron spectroscopy results, La3+ is found to mainly occupy the Y2 (2f) site in low-concentration doped samples. With increasing doping concentration, the La3+ occupation number at the Y3 (4g) site increases faster than those at the Y1 (2e) and Y2 (2f) sites. When La3+ occupies different Y sites, the localized energy states caused by the oxygen vacancy pair change their position in the forbidden band, inducing the variation of the excitation and emission bands. This research proposes a feasible method to tune the oxygen vacancy emission, eliminating the challenge of precisely controlling the calcination atmosphere. |
| 学科主题 | Science & Technology - Other Topics |
| 类目[WOS] | Multidisciplinary Sciences |
| 收录类别 | SCI |
| WOS记录号 | WOS:000351937700001 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228365]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Ding, BF,Han, C,Zheng LR,et al. Tuning oxygen vacancy photoluminescence in monoclinic Y2WO6 by selectively occupying yttrium sites using lanthanum[J]. SCIENTIFIC REPORTS,2015,5:9443. |
| APA | Ding, BF.,Han, C.,郑黎荣.,Zheng, LR.,Zhang, JY.,...&Tang, ZL.(2015).Tuning oxygen vacancy photoluminescence in monoclinic Y2WO6 by selectively occupying yttrium sites using lanthanum.SCIENTIFIC REPORTS,5,9443. |
| MLA | Ding, BF,et al."Tuning oxygen vacancy photoluminescence in monoclinic Y2WO6 by selectively occupying yttrium sites using lanthanum".SCIENTIFIC REPORTS 5(2015):9443. |
入库方式： OAI收割
来源：高能物理研究所
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