Characterization of nano-size YVO_4:Eu and (Y,Gd)VO_4:Eu phosphors by low voltage cathodo-and photoluminescence

Jong Hyuk Kang; Michael Nazarov; Won Bin Im; Jin Young Kim; Duk Young Jeon

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Characterization of nano-size YVO_4:Eu and (Y,Gd)VO_4:Eu phosphors by low voltage cathodo-and photoluminescence

机译：低压阴极和光致发光表征纳米YVO_4：Eu和（Y，Gd）VO_4：Eu荧光粉

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Low voltage cathodoluminescence (LVCL) and photoluminescence measurement were carried out to better understand the role of Gd in (Y,Gd)VO_4:Eu phosphor and to compare two different synthesis methods (solid-state reaction, coprecipitation reaction) and their preparing conditions. From the analysis of LVCL measurement, it is understood that the luminescence of YVO_4: Eu and (Y,Gd)VO_4:Eu phosphors might be interpreted as originating from a two-level system and for reasons of enhanced luminescence intensity of (Y,Gd)VO_4:Eu phosphor, the effect of Gd on the symmetry of Eu sites dominates over that of interaction between Gd and Eu. It is also found that nano-size phosphor of YVO_4:Eu synthesized by coprecipitation reaction shows lower quantum yield in comparison with that synthesized by solid-state reaction due to the presence of secondary phase produced after heat treatment.

机译：进行低压阴极发光（LVCL）和光致发光测量，以更好地了解Gd在（Y，Gd）VO_4：Eu荧光粉中的作用，并比较两种不同的合成方法（固态反应，共沉淀反应）及其制备条件。通过对LVCL测量的分析，可以理解YVO_4：Eu和（Y，Gd）VO_4：Eu荧光粉的发光可能被解释为源自两能级系统，并且由于（Y，Gd VO_4：Eu荧光粉，Gd对Eu位点对称性的影响比Gd和Eu之间的相互作用要强。还发现通过共沉淀反应合成的YVO_4：Eu纳米尺寸的荧光粉与固态反应合成的相比，由于热处理后产生的第二相的存在，显示出较低的量子产率。

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《Journal of Vacuum Science & Technology. B, Microelectronics and Nanometer Structures》 |2005年第2期|p.843-848|共6页
作者
Jong Hyuk Kang; Michael Nazarov; Won Bin Im; Jin Young Kim; Duk Young Jeon;
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作者单位

Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea;

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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
中图分类工程物理学;
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Characterization of nano-size YVO_4:Eu and (Y,Gd)VO_4:Eu phosphors by low voltage cathodo-and photoluminescence

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