Effect of the Fe3+ concentration on the upconversion luminescence in NaGdF4:Yb3+, Er3+ nanorods prepared by a hydrothermal method

  • Wei Wei
  • Jiqing JiaoEmail author
  • Yi Liu
  • Lihua Liu
  • Baize Lv
  • Zhenhua Li
  • Shasha Gai
  • Jianguo TangEmail author
Electronic materials


In this paper, uniform NaGdF4:Yb3+, Er3+ nanorods doped with Fe3+ were synthesized by a facile hydrothermal method. The prepared NaGdF4:Yb3+, Er3+ doped with Fe3+ displayed hexagonal phase structure from XRD pattern and uniform nanorods with narrow size distribution from TEM. The signal of Fe3+ is accompanied with the Yb3+ and Er3+ from EDX line-scanning, which was confirmed that Fe3+ was doped successfully. The NaGdF4:Yb3+, Er3+ nanorods doped with Fe3+ show absorption of near-infrared region from UV–Vis absorption spectra. The upconversion luminescence intensity enhances with increasing content of Fe3+ under 980 nm excitation. When stoichiometric ratio of Fe3+ is 20 mol%, the strongest upconversion emission intensity could be obtained. But the upconversion luminescence would become weak when the stoichiometric ratio of Fe3+ is above 20 mol%. Based on above analysis, it is inferred that there is energy conversion between Fe3+ and rare earth ions by the luminescence mechanism. In this work, it provides a facile method for preparation of NaGdF4:Yb3+, Er3+ nanorods, which displays improving upconversion luminescence by Fe3+ doping.



The work was financially supported by the National Natural Science Foundation (Nos. 51403114 and 51473082), Natural Science Foundation of Shandong Province (BS2014CL025), China Postdoctoral Science Foundation (No. 2014M56053), Postdoctoral Innovation Fund of Shandong Province (201402015), Program for Introducing Talents of Discipline to Universities (“111” plan), State Key Project of International Cooperation Research (2016YFE0110800).

Supplementary material

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Supplementary material 1 (DOCX 2694 kb)


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Authors and Affiliations

  1. 1.Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and EngineeringQingdao UniversityQingdaoPeople’s Republic of China

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