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Fast synthesis of Dy3+ and Tm3+ co-doped double perovskite NaLaMgWO6: a thermally stable single-phase white-emitting phosphor for WLEDs

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Abstract

Single-phase double perovskite phosphor NaLaMgWO6 was successfully synthesized via a rapid microwave irradiation method. The crystal structures of Dy3+ doped NaLaMgWO6 phosphors were investigated thoroughly via X-ray diffraction and Rietveld refinement methods. The morphology was verified by transmission electron microscopy (TEM). Single-ion yellowish white light was observed in Dy3+ doped NaLaMgWO6 phosphors and further luminescence quenching was investigated with the help of spectroscopy. Interestingly, we found that white light emission can be realized by the introduction of Tm3+ ions due to energy transfer between the doping ions. The Commission Internationale de L'Eclairage (CIE) coordinates of the NaLaMgWO6:Dy3+, Tm3+ phosphors shift from the green region to the white region by means of a doping concentration adjustment of the lanthanide ions. Luminescent and thermal properties of the single-phase white phosphor present great potential in WLEDs.

Graphical abstract: Fast synthesis of Dy3+ and Tm3+ co-doped double perovskite NaLaMgWO6: a thermally stable single-phase white-emitting phosphor for WLEDs

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Supplementary files

Article information


Submitted
12 Oct 2019
Accepted
30 Dec 2019
First published
03 Jan 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Fast synthesis of Dy3+ and Tm3+ co-doped double perovskite NaLaMgWO6: a thermally stable single-phase white-emitting phosphor for WLEDs

Q. Liu, J. Guo, M. Fan, Q. Zhang, S. Liu, K. Wong, Z. Liu and B. Wei, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/C9TC05592D

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