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Tuning oxygen vacancy photoluminescence in monoclinic Y2WO6 by selectively occupying yttrium sites using lanthanum
Ding, BF; Han, C; Zheng LR(郑黎荣); Zheng, LR; Zhang, JY; Wang, RM; Tang, ZL
2015
发表期刊SCIENTIFIC REPORTS
卷号5页码:9443
文章类型Article
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.
学科领域Science & Technology - Other Topics
DOI10.1038/srep09443
收录类别SCI
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000351937700001
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被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228365
专题多学科研究中心
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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.
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