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

Quan Liu, Jia Guo, Minghan Fan, Qian Zhang, Shuo Liu, Ka-Leung WONG*, Zhenyu Liu, Bo Wei

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2117-2122
Number of pages6
JournalJournal of Materials Chemistry C
Volume8
Issue number6
DOIs
Publication statusPublished - 14 Feb 2020

Scopus Subject Areas

  • Chemistry(all)
  • Materials Chemistry

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