Investigation of upconversion and downconversion fluorescence emissions from β-NaLn1F_4:Yb~(3+), Ln2~(3+) (Ln1 = Y, Lu; Ln2 = Er, Ho, Tm, Eu) hexagonal disk system

Enjie He; Hairong Zheng; Wei Gao; Yinxun Tu; Ying Lu; Guian Li

首页> 外文期刊>Materials Research Bulletin >Investigation of upconversion and downconversion fluorescence emissions from β-NaLn1F_4:Yb~(3+), Ln2~(3+) (Ln1 = Y, Lu; Ln2 = Er, Ho, Tm, Eu) hexagonal disk system

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Investigation of upconversion and downconversion fluorescence emissions from β-NaLn1F_4:Yb~(3+), Ln2~(3+) (Ln1 = Y, Lu; Ln2 = Er, Ho, Tm, Eu) hexagonal disk system

机译：β-NaLn1F_4：Yb〜（3+），Ln2〜（3+）（Ln1 = Y，Lu; Ln2 = Er，Ho，Tm，Eu）六角盘系统上转换和下转换荧光发射的研究

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Uniform hexagonal β-NaLn1F4:Yb~(3+), Ln2~(3+) (Ln 1 = Y, Lu; Ln 2=Er, Ho, Tm, Eu) disks were synthesized with hydrothermal method in which the sodium citrate was used as a shape modifier. The experimental observation indicated that both upconversion and downconversion fluorescence emissions were significantly stronger in β-NaLuF_4 than that for β-NaYF_4. It was found that the stronger hypersensitive transitions were mainly due to the increase of J-O parameter (Ω_2) in β-NaLuF_4 host, while the stronger insensitive transitions were mainly caused by the stronger overlap of electron cloud that was induced by the decrease of Ln-F bond lengths. Additionally, the larger absorption strength in the near-infrared region is another important factor for the stronger fluorescence emissions. The current research has a great potential in improving near-infrared conversion efficiency of silicon solar cells.

机译：采用水热法合成均匀的六角形β-NaLn1F4：Yb〜（3+），Ln2〜（3+）（Ln 1 = Y，Lu; Ln 2 = Er，Ho，Tm，Eu）圆片用作形状修改器。实验观察表明，β-NaLuF_4的上转换和下转换荧光发射均明显强于β-NaYF_4。发现较强的超敏跃迁主要是由于β-NaLuF_4主体中JO参数（Ω_2）的增加，而较强的超敏跃迁主要是由Ln-的减少引起的电子云的较强重叠引起的。 F键长度。另外，在近红外区域中较大的吸收强度是产生较强荧光发射的另一个重要因素。当前的研究在提高硅太阳能电池的近红外转换效率方面具有巨大潜力。

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来源
《Materials Research Bulletin》 |2013年第9期|3505-3512|共8页
作者
Enjie He; Hairong Zheng; Wei Gao; Yinxun Tu; Ying Lu; Guian Li;
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作者单位

College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China,College of Science, Anhui Science and Technology University, Bengbu 233100, China;

College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China;

College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China;

College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China;

College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China;

College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
A. Optical materials; B. Chemical synthesis; C. X-ray diffraction; D. Luminescence; D. Optical properties;

机译：A.光学材料;B。化学合成;C。 X射线衍射;D。发光;D．光学性质;

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Investigation of upconversion and downconversion fluorescence emissions from β-NaLn1F_4:Yb~(3+), Ln2~(3+) (Ln1 = Y, Lu; Ln2 = Er, Ho, Tm, Eu) hexagonal disk system

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