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3D Architectures of LaVO4:Eu3+ Microcrystals via an EG-assisted Hydrothermal Method: Phase Selective Synthesis, Growth Mechanism and Luminescent Properties

  • Ding, Yi (School of Material and Chemical Engineering, Anhui Jianzhu University) ;
  • Zhang, Bo (School of Material and Chemical Engineering, Anhui Jianzhu University) ;
  • Ren, Qifang (School of Material and Chemical Engineering, Anhui Jianzhu University) ;
  • Zhang, Qicai (School of Material and Chemical Engineering, Anhui Jianzhu University) ;
  • Zha, Weiwei (School of Material and Chemical Engineering, Anhui Jianzhu University) ;
  • Li, Xin (School of Material and Chemical Engineering, Anhui Jianzhu University) ;
  • Chen, Shaohua (School of Material and Chemical Engineering, Anhui Jianzhu University) ;
  • Oh, Won-Chun (Department of Advanced Materials Science and Engineering, Hanseo University)
  • Received : 2016.05.04
  • Accepted : 2017.02.27
  • Published : 2017.03.31

Abstract

In this article, pure $m-LaVO_4:Eu^{3+}$ and $t-LaVO_4:Eu^{3+}$ nanocrystals were prepared by an EG-assisted hydrothermal method with regular shapes. A series of controlled experiments showed that the pH value of a mixed solution, the volume ratio of $EG/H_2O$ and the dosage of the doped $Eu^{3+}$ all had an important effect on the sizes and shapes of the final products. Furthermore, the constitutional unit of the products changed from 0D to 2D with an increase in the EG dosage. The PL results showed that $t-LaVO_4$ doped with $Eu^{3+}$ ions had better luminescence properties than $m-LaVO_4$ due to its special structure. All of these results not only expand our understanding of the luminescence properties of lanthanide orthovanadates, but they also elucidate the principles of the crystal growth.

Keywords

References

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