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Synthesis and luminescence properties of NaGdF4: Yb3+, Ce3+, and Ho3+ upconversion nanoparticles doped with Zn2+

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Abstract

Improving luminescence intensities of rare-earth (RE)-doped upconversion nanoparticles (UCNPs) have aroused great attention recently. In this study, NaGdF4: Yb3+, Ce3+, and Ho3+ UCNPs doped with varying concentrations of Zn2+ were synthesized in one step by high temperature pyrolysis using oleate chemicals. X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ICP-MS (inductively coupled plasma-mass spectrometry), upconversion emission spectra and luminescence lifetimes were used to study the samples. It was found that as the concentration of Zn2+ increased from 0 to 15 mol%, the luminescence intensities of both red and green emissions first increased and then decreased, with the maximum value of Zn2+ doping at 10 mol%. We concluded that Zn2+ dopant and F− vacancies accounted for the intensity changes. Our research can be beneficial for the structural design and applications of RE-doped UCNPs.

Graphical abstract: Synthesis and luminescence properties of NaGdF4: Yb3+, Ce3+, and Ho3+ upconversion nanoparticles doped with Zn2+

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Publication details

The article was received on 18 Jan 2018, accepted on 25 Mar 2018 and first published on 26 Mar 2018


Article type: Paper
DOI: 10.1039/C8CE00079D
Citation: CrystEngComm, 2018, Advance Article
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    Synthesis and luminescence properties of NaGdF4: Yb3+, Ce3+, and Ho3+ upconversion nanoparticles doped with Zn2+

    Y. Kuang, J. Xu, C. Wang, C. Wang, H. Shao, D. Yang, S. Gai, F. He and P. Yang, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE00079D

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