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首页> 外文期刊>Materials Science and Engineering >Tricolor luminescence in rare earth doped CaZrO_3 perovskite oxides
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Tricolor luminescence in rare earth doped CaZrO_3 perovskite oxides

机译：稀土掺杂CaZrO_3钙钛矿氧化物中的三色发光

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摘要

Intense tricolor photoluminescence under ultraviolet excitation was observed from Eu-Mg codoped CaZrO_3 and Tb-Mg codoped CaZrO_3. The RGB tricolor was obtained from a single host lattice of perovskite-type CaZrO_3 by just varying a doped rare earth ion and its concentration. Red luminescence was observed in Eu-Mg codoped CaZrO_3, and green and blue luminescence was observed in Tb-Mg codoped CaZrO_3. The color of the luminescence in Tb-Mg codoped CaZrO_3 changed with Tb concentration clue to the cross relaxation in Tb ions; green color was seen at high concentration and blue color at low concentration. In comparison with other perovskite host lattices, these zirconates showed more intense luminescence than hafnates and stannates. In addition. Mg codoping with the rare earth ions markedly increased the luminescence intensity. It is considered that the intense luminescence in the zirconates is attributed to the large crystal structural distortion of CaZrO_3 and the local lattice distortion around the rare earth ions enhanced by Mg substitution at Ca sites.
机译：从Eu-Mg共掺杂的CaZrO_3和Tb-Mg共掺杂的CaZrO_3观察到了紫外线激发下的强烈三色光致发光。通过仅改变掺杂的稀土离子及其浓度，可以从钙钛矿型CaZrO_3的单个主体晶格中获得RGB三色。在Eu-Mg共掺杂的CaZrO_3中观察到红色发光，在Tb-Mg共掺杂的CaZrO_3中观察到绿色和蓝色发光。 Tb-Mg共掺杂的CaZrO_3的发光颜色随Tb浓度的变化而变化，这是由于Tb离子的交叉弛豫所致。在高浓度下观察到绿色，在低浓度下观察到蓝色。与其他钙钛矿主体晶格相比，这些锆酸盐显示出比hafnate和锡酸盐更高的发光强度。此外。镁与稀土离子共掺杂显着提高了发光强度。认为锆酸盐中的强烈发光归因于CaZrO_3的大晶体结构畸变和Ca位点处的Mg取代增强的稀土离子周围的局部晶格畸变。

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  • 来源
    《Materials Science and Engineering》 |2009年第3期|100-103|共4页
  • 作者

    Yuhei Shimizu; Sho Sakagami; Katsuhiko Goto; Yutaka Nakachi; Kazushige Ueda;

  • 作者单位

    Department of Materials Science. Faculty of Engineering. Kyushu Institute of Technology, 1-1 Sensui, Tobala, Kirakyushu, Fukuoka 804-8550, Japan;

    Department of Materials Science. Faculty of Engineering. Kyushu Institute of Technology, 1-1 Sensui, Tobala, Kirakyushu, Fukuoka 804-8550, Japan;

    Department of Materials Science. Faculty of Engineering. Kyushu Institute of Technology, 1-1 Sensui, Tobala, Kirakyushu, Fukuoka 804-8550, Japan;

    Department of Materials Science. Faculty of Engineering. Kyushu Institute of Technology, 1-1 Sensui, Tobala, Kirakyushu, Fukuoka 804-8550, Japan;

    Department of Materials Science. Faculty of Engineering. Kyushu Institute of Technology, 1-1 Sensui, Tobala, Kirakyushu, Fukuoka 804-8550, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    photoluminescence; phosphor; perovskite; CaZrO_3; rare earth;

    机译：光致发光磷;钙钛矿CaZrO_3;稀土;

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