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Issue 26, 2017
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Sc3+-induced morphology, phase structure, and upconversion luminescence evolution of YF3:Yb/Er nanocrystals

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Abstract

The increasingly wide application of lanthanide-based upconversion nanocrystals has generated an urgent need to control and manipulate both the morphological and optical properties of these materials. In this work, Sc3+ ions were utilized to modulate the morphology, phase structure, and upconversion luminescence properties of YF3:Yb/Er nanocrystals. At a Sc3+ doping concentration of 0–25 mol% the YF3:Yb/Er nanocrystals gradually changed from ∼16 nm rhombic nanodots to ∼57 nm zigzag-shaped nanorods, and the upconversion luminescence was enhanced by 5 times. The co-existence of the YF3:Yb/Er and ScF3:Yb/Er nanocrystals was then seen at 25–60 mol% Sc3+ doping, and finally the ScF3:Yb/Er nanocrystals became the only product at >60 mol% Sc3+ doping. A mechanism of oriented attachment growth has been proposed to explain the morphology evolution, and the upconversion luminescence details have been discussed from the crystal structure point of view.

Graphical abstract: Sc3+-induced morphology, phase structure, and upconversion luminescence evolution of YF3:Yb/Er nanocrystals

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Publication details

The article was received on 14 May 2017, accepted on 30 May 2017 and first published on 01 Jun 2017


Article type: Paper
DOI: 10.1039/C7TC02118F
Citation: J. Mater. Chem. C, 2017,5, 6450-6456
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    Sc3+-induced morphology, phase structure, and upconversion luminescence evolution of YF3:Yb/Er nanocrystals

    H. Li, Q. Huang, Y. Wang, K. Chen, J. Xie, Y. Pan, H. Su, X. Xie, L. Huang and W. Huang, J. Mater. Chem. C, 2017, 5, 6450
    DOI: 10.1039/C7TC02118F

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