| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Effect of Hf4+ doping on structure and enhancement of upconversion luminescence in Yb: Tm: LiNbO3 crystals |
| Li Dai(代丽)1, Chunrui Liu(刘春蕊)1, Xianbo Han(韩县博)1, Luping Wang(王路平)2, Yu Shao(邵瑀)1, Yuheng Xu(徐玉恒)3 |
1 College of Science, Harbin University of Science and Technology, Harbin 150080, China;
2 School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China;
3 Department of the Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China |
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Abstract A series of Yb:Tm:LiNbO3 crystals doped with x mol% Hf4+ ions (x=2, 4, and 6) were grown by the Czochralski method. The dopant occupancy and defect structure of Hf:Yb:Tm:LiNbO3 crystals were investigated by x-ray diffraction and infrared transmission spectra. The influence of Hf4+ ions concentration on UV-VIS-NIR absorption spectra of Hf:Yb:Tm:LiNbO3 crystals was discussed. The upconversion luminescence of Hf:Yb:Tm:LiNbO3 crystals was obtained under 980 nm excitation. Strong emissions were observed at 475 nm in the blue wavelength range and 651 nm in the red wavelength range. Remarkably, enhancement of the red and blue upconversion luminescence was achieved by tridoping Hf4+ ions.
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Received: 26 April 2018
Revised: 03 July 2018
Accepted manuscript online:
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PACS:
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42.70.-a
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(Optical materials)
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61.50.Ah
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(Theory of crystal structure, crystal symmetry; calculations and modeling)
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78.55.-m
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(Photoluminescence, properties and materials)
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| Fund: Project supported by Special Funds of Harbin Innovation Talents in Science and Technology Research, China (Grant No. 2015RQQXJ045) and Science Funds for the Young Innovative Talents of HUST, China. |
Corresponding Authors:
Li Dai
E-mail: daili198108@126.com
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Cite this article:
Li Dai(代丽), Chunrui Liu(刘春蕊), Xianbo Han(韩县博), Luping Wang(王路平), Yu Shao(邵瑀), Yuheng Xu(徐玉恒) Effect of Hf4+ doping on structure and enhancement of upconversion luminescence in Yb: Tm: LiNbO3 crystals 2018 Chin. Phys. B 27 114217
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