Strain-Induced Enhancement of Eu3+ Emission in Red Phosphor NaMgPO4:Eu3+, Al3+


A series of (NaMgPO4)0.98−x : \({\hbox{Eu}}_{0.02}^{3 + }\), \({\hbox{Al}}_{x}^{3 + }\) phosphors were prepared by the solid-state method. X-ray powder diffraction results confirm that the samples contain mixture phases of crystals. The doped effect of Al3+ on the photoluminescence properties of (NaMgPO4)0.98−x : \({\hbox{Eu}}_{0.02}^{3 + }\), \({\hbox{Al}}_{x}^{3 + }\) phosphors is discussed. The results indicate that two dependent curves of emission relative intensity and strain on Al3+ doping concentration are all Gaussian curves, and a high correlation is observed between emission relative intensity of Eu3+ and strain caused by Al3+. In other words, emission relative intensity of Eu3+ is enhanced with the increase of the strain. The enhanced mechanism of the strain is discussed. In addition, (NaMgPO4)0.98−x : \({\hbox{Eu}}_{0.02}^{3 + }\), \({\hbox{Al}}_{x}^{3 + }\) phosphors are electric dipole-dominated transition red phosphors. The optimal molar concentration of Al3+ for the samples is 9%, which (NaMgPO4)0.89: \({\hbox{Eu}}_{0.02}^{3 + }\), \({\hbox{Al}}_{0.09}^{3 + }\) is a potential candidate as the red-emitting phosphor for ultraviolet-based white light-emitting diodes.

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This work was financially supported by the Natural Science Foundation of China (Grant No. 21561003, 21661006), and the Guangxi Scientific Foundation of China (Grant No. 2012GXNSFAA053019).

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Correspondence to Sen Liao.

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Gao, Y., Long, Q., Nong, R. et al. Strain-Induced Enhancement of Eu3+ Emission in Red Phosphor NaMgPO4:Eu3+, Al3+ . Journal of Elec Materi 46, 911–916 (2017).

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  • Inorganic compounds
  • optical materials
  • chemical synthesis
  • luminescence
  • optical properties