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Effects of Re3+ (Re = Y, La, Gd) Co-doping on Luminescence Properties of MSi2O2N2:Eu2+ (M = Ca, Sr) Phosphors

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Re3+ ions (Re = Y, La, Gd)-doped MSi2O2N2:Eu2+ (M = Ca, Sr) phosphors were prepared by the solid-state reaction method. The effects of co-dopants (Y3+, La3+, Gd3+) and Eu2+ doping concentration on the luminescent performance of MSi2O2N2:Eu2+ have been investigated. The co-doping with Re3+ (Re = Y, La, Gd) significantly improved the luminescent performance of MSi2O2N2:Eu2+ (M = Ca, Sr) overall. Re3+ co-doping had a greater enhancing effect on higher Eu2+ concentration samples and the Re3+-doped CaSi2O2N2:Eu2+ phosphors exhibited better luminescence properties than Re3+-doped SrSi2O2N2:Eu2+ ones. In addition, incorporation of Y3+ ions to SrSi2O2N2:Eu2+ showed the strongest emission among the three dopants (Y3+, La3+, and Gd3+), while the Gd3+ doping ions in CaSi2O2N2:Eu2+ exhibited superior luminescence properties compared to Y3+ and La3+.

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This work was supported by the Guizhou Provincial Science and Technology Planning Project (No. ZK2023-144) and the Nature Science Foundation of Guizhou Minzu University (No. GZMUZK[2021]YB05)

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Correspondence to Fei Long or Xucheng Li.

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Wei, T., Wang, L., Xu, H. et al. Effects of Re3+ (Re = Y, La, Gd) Co-doping on Luminescence Properties of MSi2O2N2:Eu2+ (M = Ca, Sr) Phosphors. J. Electron. Mater. 53, 4880–4885 (2024).

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