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<p>In this study, a series of SrLaNaTeO<sub>6</sub>:Dy<sup>3+</sup> phosphors with varying Dy<sup>3+</sup> concentrations were successfully synthesized using a high-temperature solid-state reaction method. X-ray diffraction analysis confirmed that all samples consisted solely of the pure SrLaNaTeO<sub>6</sub>:Dy<sup>3+</sup> phase. To systematically investigate the concentration quenching and luminescence thermal stability, detailed fluorescence spectroscopic studies were carried out. Application of the Van Uitert model revealed that dipole–dipole interactions play a critical role in facilitating energy transfer between Dy<sup>3+</sup> ions. Furthermore, temperature-dependent fluorescence experiments indicated that an Arrhenius-based crossover process accurately characterizes the thermal quenching behavior of the Dy<sup>3+ 4</sup>F<sub>9/2</sub> excited state in SrLaNaTeO<sub>6</sub> powders. Finally, by integrating diffuse reflectance spectroscopy and fluorescence decay measurements with Judd–Ofelt theory, an in-depth analysis of the optical transition characteristics of Dy<sup>3+</sup> in the system was conducted.</p>

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Judd–Ofelt Analysis and Luminescent Properties of Dy3+-Doped SrLaNaTeO6 Phosphors

  • 期刊论文

  • 发表日期：

    2025年5月30日

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  • Shengyi Liu,
  • Duan Gao,
  • Xin Chen,
  • Mingyu Cui,
  • Xilai Zhang,
  • Han Yin,
  • Ying Zhu,
  • Li Wang,
  • Wenbin Song,
  • Jingjing Zhang

摘要

In this study, a series of SrLaNaTeO6:Dy3+ phosphors with varying Dy3+ concentrations were successfully synthesized using a high-temperature solid-state reaction method. X-ray diffraction analysis confirmed that all samples consisted solely of the pure SrLaNaTeO6:Dy3+ phase. To systematically investigate the concentration quenching and luminescence thermal stability, detailed fluorescence spectroscopic studies were carried out. Application of the Van Uitert model revealed that dipole–dipole interactions play a critical role in facilitating energy transfer between Dy3+ ions. Furthermore, temperature-dependent fluorescence experiments indicated that an Arrhenius-based crossover process accurately characterizes the thermal quenching behavior of the Dy3+ 4F9/2 excited state in SrLaNaTeO6 powders. Finally, by integrating diffuse reflectance spectroscopy and fluorescence decay measurements with Judd–Ofelt theory, an in-depth analysis of the optical transition characteristics of Dy3+ in the system was conducted.