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Issue 18, 2017
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Up-conversion luminescence of rare earth-doped KGd(WO4)2 phosphors for tunable multicolour light generation

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Abstract

A series of novel KGd(WO4)2 crystalline powders doped with Yb3+/Tm3+, Yb3+/Er3+ and Yb3+/Ho3+ were synthesized using a modified Pechini method. The monoclinic structure of these compounds was confirmed by XRD. The luminescence properties were investigated by measuring up-conversion luminescence spectra and decay curves. KGd(WO4)2 crystalline powders doped with Yb3+/Tm3+, Yb3+/Er3+ and Yb3+/Ho3+ exhibit effective multicolour up-conversion luminescence in the VIS and NIR spectral ranges under 980 nm excitation. The vibrational properties of the materials were investigated using μ-Raman spectroscopy. The assistance of low energy phonons of the KGd(WO4)2 matrix in the energy transfer processes between the excited manifolds of the Yb3+, Er3+, Tm3+ and/or Ho3+ ions during the up-conversion process was discussed. These results indicate that KGd(WO4)2 powders doped with selected Tm3+, Er3+, Ho3+ and Yb3+ ions may be potentially used as single-component multicolour or white emission phosphors.

Graphical abstract: Up-conversion luminescence of rare earth-doped KGd(WO4)2 phosphors for tunable multicolour light generation

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Publication details

The article was received on 24 May 2017, accepted on 31 Jul 2017 and first published on 11 Aug 2017


Article type: Paper
DOI: 10.1039/C7NJ01823A
Citation: New J. Chem., 2017,41, 9847-9856
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    Up-conversion luminescence of rare earth-doped KGd(WO4)2 phosphors for tunable multicolour light generation

    D. Kasprowicz, P. Głuchowski, B. M. Maciejewska, M. Chrunik and A. Majchrowski, New J. Chem., 2017, 41, 9847
    DOI: 10.1039/C7NJ01823A

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