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<p>In this study, a novel 3YSZ luminescent ceramic material with a vibrant yellow color was synthesized using the solid phase method. This was achieved by introducing chemical defects through ion doping to address the issue of significant volatility of colorant-doped 3YSZ ceramic at high temperatures and the instability associated with coloring ion doping. The study reveals that Pr<sup>3+</sup> substitutes for Zr<sup>4+</sup> to form a negatively charged defect (Pr<sup>3+</sup> occupies the position of Zr<sup>4+</sup>), leading to the occurrence of point defect oxygen vacancy (<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="339_2025_8798_Article_IEq1.gif" Format="GIF" Height="18" Rendition="HTML" Resolution="72" Type="Linedraw" Width="29" /> </InlineMediaObject> <EquationSource Format="TEX">\({V}_{O}^{\bullet \bullet }\)</EquationSource> </InlineEquation>) as a chemical defect in the system for charge balance. The analysis of UV-Vis spectroscopy, based on Tauc theory, reveals a reduction in the band gap from 3.03&#xa0;eV to 2.25&#xa0;eV. It indicates that Pr ions can affect the band structure. Therefore, when regulating the valence change of Pr (3+/4+) in 3YSZ materials, leading to the reduction of oxygen vacancy (O<sub>v</sub>), band gap, and spectral redshift. Under 447&#xa0;nm photoexcitation, 0.25 wt% Pr ion doped 3YSZ showed the strongest luminescence, showing five emission peaks generated by the Pr<sup>3+</sup> ion radiation transition, and the ceramics showed a yellow hue. The luminescent oxides doped by Pr ions with ZrO<sub>2</sub> may be promising candidates for high temperature applications in industry.</p>

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Chemical defect regulation and luminescence properties of red-emitting Pr-doped 3YSZ yellow ceramics

  • 期刊论文

  • 发表日期：

    2025年8月27日

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  • Chuanming Zou,
  • Yueming Li,
  • Kai Li,
  • Yi Sun,
  • Binglong Lei

摘要

In this study, a novel 3YSZ luminescent ceramic material with a vibrant yellow color was synthesized using the solid phase method. This was achieved by introducing chemical defects through ion doping to address the issue of significant volatility of colorant-doped 3YSZ ceramic at high temperatures and the instability associated with coloring ion doping. The study reveals that Pr3+ substitutes for Zr4+ to form a negatively charged defect (Pr3+ occupies the position of Zr4+), leading to the occurrence of point defect oxygen vacancy ( \({V}_{O}^{\bullet \bullet }\) ) as a chemical defect in the system for charge balance. The analysis of UV-Vis spectroscopy, based on Tauc theory, reveals a reduction in the band gap from 3.03 eV to 2.25 eV. It indicates that Pr ions can affect the band structure. Therefore, when regulating the valence change of Pr (3+/4+) in 3YSZ materials, leading to the reduction of oxygen vacancy (Ov), band gap, and spectral redshift. Under 447 nm photoexcitation, 0.25 wt% Pr ion doped 3YSZ showed the strongest luminescence, showing five emission peaks generated by the Pr3+ ion radiation transition, and the ceramics showed a yellow hue. The luminescent oxides doped by Pr ions with ZrO2 may be promising candidates for high temperature applications in industry.