Upconversion Luminescence of MgSc2O4: Er3+/Yb3+ Nanocrystals Co-doped Alkali Ions

被引：0
|
作者：
Yuang M.-J. [1 ]
Li J. [2 ]
Qin H.-L. [1 ]
Peng Y.-R. [2 ]
Huang Y.-X. [2 ]
Chen L. [1 ,2 ]
机构：
[1] School of Chemistry and Life Science & Advanced Institute of Materials Science, Changchun University of Technology, Changchun
[2] School of Materials Science and Engineering, Changchun University of Technology, Changchun
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2020年 / 41卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Alkali ions; Hydrothermal method; MgSc[!sub]2[!/sub]O[!sub]4[!/sub; Rare earth ion; Upconversion luminescence;
D O I：
10.37188/CJL.20200294
中图分类号：
学科分类号：
摘要：
The alkali ions(Li+/Na+/K+) co-doped MgSc2O4: Er3+/Yb3+ nanocrystals have been synthesized by hydrothermal method. The average size of obtained spheroid nanocrystals is about 35 nm. The upconversion luminescence intensity can be strengthened by adjusting alkali ions types and contents. The K+ ions co-doped MgSc2O4: Er3+/Yb3+ nanocrystals display the strongest luminescence. As K+ content increasing, emission intensity can be enhanced gradually due to the large asymmetry of crystal field created by K+ ions. The spectral properties of K+ ions co-doped MgSc2O4: Er3+/Yb3+ nanocrystals are described in detail as a function of Er3+ and Yb3+ concentrations. The MgSc2O4: 1%Er3+/5%Yb3+ nanocrystal was optimized for the strongest upconversion luminescence. Then, the upconversion mechanism and energy transfer processes between Yb3+ ions and Er3+ ions in K+ ions co-doped MgSc2O4: Er3+/Yb3+ nanocrystals were investigated under the 980 nm excitation. © 2020, Science Press. All right reserved.
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页码：1351 / 1357
页数：6
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