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Spectroscopic Properties and Upconversion Studies in Ho3+/Yb3+ Co-doped Calcium Scandate with Spectrally Pure Green emission

Authors

  • Dr. Jing Li,

    1. State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033 (PR China), Fax: (+86) 431-8617-6317
    2. University of Chinese Academy of Sciences, Beijing, 100039 (PR China)
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  • Prof. Jiahua Zhang,

    Corresponding author
    1. State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033 (PR China), Fax: (+86) 431-8617-6317
    • State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033 (PR China), Fax: (+86) 431-8617-6317

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  • Dr. Zhendong Hao,

    1. State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033 (PR China), Fax: (+86) 431-8617-6317
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  • Xia Zhang,

    1. State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033 (PR China), Fax: (+86) 431-8617-6317
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  • Dr. Jihong Zhao,

    1. Jilin Cancer Hospital, 1018 Huguang Road, Changchun 130012 (PR China)
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  • Dr. Yongshi Luo

    1. State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033 (PR China), Fax: (+86) 431-8617-6317
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Abstract

The optical properties of a Ho3+/Yb3+ co-doped CaSc2O4 oxide material are investigated in detail. The spectral properties are described as a function of doping concentrations. The efficient Yb3+→Ho3+ energy transfer is observed. The transfer efficiency approaches 50 % before concentration quenching. The concentration-optimized sample exhibits a strong green emission accompanied with a weak red emission, showing perfect green monochromaticity. The results of the spectral distribution, power dependence, and lifetime measurements are presented. The green, red, and near-infrared (NIR) emissions around 545, 660, and 759 nm are assigned to the 5F4+5S25I8, 5F55I8, and 5F4+5S25I7 transitions of Ho3+, respectively. The detailed study reveals the upconversion luminescence mechanism involved in a novel Ho3+/Yb3+ co-doped CaSc2O4 oxide material.

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