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首页> 外文期刊>Journal of Materials Research >Preparation of Eu~(3+) doped Al_5BO_9 red phosphor by a facile thermal conversion method and its enhanced luminescent property
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Preparation of Eu~(3+) doped Al_5BO_9 red phosphor by a facile thermal conversion method and its enhanced luminescent property

机译：简便的热转化法制备Eu〜（3+）掺杂Al_5BO_9红色荧光粉及其增强的发光性能

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摘要

A new red-emitting phosphor, Eu~(3+) doped Al_5BO_9, was prepared for the first time by calcining the precursor of K_2[Al(B_5O_(10))]•4H_2O:Eu~(3+) which was synthesized by a facile hydrothermal route. The obtained samples were characterized by energy dispersive x-ray spectrometer, x-ray powder diffraction, IR, scanning electron microscopy, photoluminescence, and photolumines-cence excitation spectrum (PLE). Moreover, the influences of Eu~(3+) doping concentration, calcination temperature, and calcination time on the luminescence properties of Al_5BO_9:Eu~(3+) phosphor were also investigated. The phosphor with optimal luminescent intensity and the higher red/orange ratio was obtained by sintering the precursor at 1300 ℃ for 5.5 h, with 5% doping concentration, in which its luminescent decay lifetime and quantum efficiency were also measured. It is also found that the phosphor prepared by conventional solid-state reaction method exhibits the dominant transition at 591 nm (orange) with the lower color purity, while the phosphor prepared by the present precursor method exhibits the dominant transition at 615 nm (red) with the higher color purity, which indicates that this is a good method for preparing Al_5BO_9:Eu~(3+) red phosphor.
机译：通过煅烧合成的K_2 [Al（B_5O_（10））]•4H_2O：Eu〜（3+）的前体，首次制备了新的掺杂Eu〜（3+）的红色荧光粉Al_5BO_9。一条简便的热液路线。通过能量色散X射线光谱仪，X射线粉末衍射，IR，扫描电子显微镜，光致发光和光致发光-激发光谱（PLE）来表征所获得的样品。此外，还研究了Eu〜（3+）掺杂浓度，煅烧温度和煅烧时间对Al_5BO_9：Eu〜（3+）荧光粉发光性能的影响。在1300℃下烧结5.5h，掺杂浓度为5％，得到了具有最佳发光强度和较高的红/橙比的荧光粉，并测定了其发光衰减寿命和量子效率。还发现通过常规固态反应方法制备的磷光体在较低的色纯度下在591nm（橙色）表现出主要转变，而通过本前体方法制备的磷光体在615nm（红色）表现出主要转变。具有较高的色纯度，表明这是制备Al_5BO_9：Eu〜（3+）红色荧光粉的好方法。

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  • 来源
    《Journal of Materials Research》 |2016年第10期|1433-1439|共7页
  • 作者

    Yu-Yan Liang; Zhi-Hong Liu;

  • 作者单位

    Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China;

    Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China;

  • 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
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