Issue 6, 2020

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

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

Supplementary files

Article information

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

J. Mater. Chem. C, 2020,8, 2117-2122

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, 8, 2117 DOI: 10.1039/C9TC05592D

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