| Shape controllable synthesis and enhanced upconversion photoluminescence of β-NaGdF_4:Yb~(3+), Er~(3+) nanocrystals by introducing Mg~(2+) |
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| 引用本文： | 杨永馨,徐征,赵谡玲,梁志琴,朱薇,张俊杰.Shape controllable synthesis and enhanced upconversion photoluminescence of β-NaGdF_4:Yb~(3+), Er~(3+) nanocrystals by introducing Mg~(2+)[J].中国物理 B,2017,26(8):87801-087801. |
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| 作者姓名： | 杨永馨 徐征 赵谡玲 梁志琴 朱薇 张俊杰 |
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| 作者单位： | 1.Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;2.Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China |
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| 基金项目： | Project supported by the National High Technology Research and Development Program of China (Grant No. 2013AA032205), the Key Project of Beijing Scientific Committee, China (Grant No. D161100003416001), the Fundamental Research Funds for the Central Universities, China (Grant No. 2016JBM066), and the National Natural Science Foundation of China (Grant Nos. 51272022 and 11474018). |
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| 摘 要： | Different concentrations of Mg~(2+) -doped hexagonal phase NaGdF_4:Yb~(3+), Er~(3+)nanocrystals(NCs) were synthesized by a modified solvothermal method. Successful codoping of Mg~(2+)ions in upconversion nanoparticles(UCNPs) was supported by XRD, SEM, EDS, and PL analyses. The effects of Mg~(2+)doping on the morphology and the intensity of the upconversion(UC) emission were discussed in detail. It turned out that with the concentration of Mg~(2+)increasing, the morphology of the nanoparticles turn to change gradually and the UC emission was increasing gradually as well. Notably the UC fluorescence intensities of Er~(3+)were gradually improved owing to the codoped Mg~(2+)and then achieved a maximum level as the concentration of Mg~(2+)ions was 60 mol% from the amendment of the crystal structure of β-NaGdF_4:Yb~(3+),Er~(3+)nanoparticles. Moreover, the UC luminescence properties of the rare-earth(Yb3+, Er~(3+)) ions codoped NaGdF_4 nanocrystals were investigated in detail under 980-nm excitation.
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| 收稿时间： | 2017-02-16 |
Shape controllable synthesis and enhanced upconversion photoluminescence of β-NaGdF4:Yb3+, Er3+ nanocrystals by introducing Mg2+ |
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| Institution: | 1.Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;2.Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | Different concentrations of Mg2+-doped hexagonal phase NaGdF4:Yb3+, Er3+ nanocrystals (NCs) were synthesized by a modified solvothermal method. Successful codoping of Mg2+ ions in upconversion nanoparticles (UCNPs) was supported by XRD, SEM, EDS, and PL analyses. The effects of Mg2+ doping on the morphology and the intensity of the upconversion (UC) emission were discussed in detail. It turned out that with the concentration of Mg2+ increasing, the morphology of the nanoparticles turn to change gradually and the UC emission was increasing gradually as well. Notably the UC fluorescence intensities of Er3+ were gradually improved owing to the codoped Mg2+ and then achieved a maximum level as the concentration of Mg2+ ions was 60 mol% from the amendment of the crystal structure of β -NaGdF4:Yb3+, Er3+ nanoparticles. Moreover, the UC luminescence properties of the rare-earth (Yb3+, Er3+ ions codoped NaGdF4 nanocrystals were investigated in detail under 980-nm excitation. |
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| Keywords: | NaGdF4:Yb3+/Er3+ nanoparticles Mg2+ ions morphology upconversion photoluminescence |
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