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<p>In recent years, rare-earth-doped up-conversion luminescent materials have been widely applied across various fields. In practical applications, we have observed that different dopant ions exert various effects on numerous host materials. Based on this, we successfully synthesized a&#xa0;dual-excited Sr<sub>3</sub>La<sub>2</sub>Ge<sub>3</sub>O<sub>12</sub> (SLGO) material. By introducing Yb<sup>3+</sup>/Er<sup>3+</sup> in designed phosphor, it exhibits green and red emissions under 980 nm and 1550 nm excitation, respectively, making it suitable for a&#xa0;variety of scientific and technological applications. Systematic investigation of up-conversion mechanisms driven by different excitation sources, show that adjusting the molar ratio of Er<sup>3+</sup> to Yb<sup>3+</sup> can significantly enhance the material performance, making it highly suitable as a&#xa0;high-performance optical thermometer based on FIR technology. These results demonstrate that SLGO:Er<sup>3+</sup>/Yb<sup>3+</sup> phosphors exhibit unique temperature sensing characteristics, highlighting their potential as temperature sensors.</p>

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High-sensitivity FIR optical thermometry based on Sr3La2Ge3O12:Er3+/Yb3+ up-conversion phosphors

  • 期刊论文

  • 发表日期：

    2026年6月1日

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  • S. Y. Liu,
  • D. Gao,
  • H. Yin,
  • J. D. Dong,
  • H. Y. Liu,
  • L. Wang,
  • W. B. Song,
  • X. Chen

摘要

In recent years, rare-earth-doped up-conversion luminescent materials have been widely applied across various fields. In practical applications, we have observed that different dopant ions exert various effects on numerous host materials. Based on this, we successfully synthesized a dual-excited Sr3La2Ge3O12 (SLGO) material. By introducing Yb3+/Er3+ in designed phosphor, it exhibits green and red emissions under 980 nm and 1550 nm excitation, respectively, making it suitable for a variety of scientific and technological applications. Systematic investigation of up-conversion mechanisms driven by different excitation sources, show that adjusting the molar ratio of Er3+ to Yb3+ can significantly enhance the material performance, making it highly suitable as a high-performance optical thermometer based on FIR technology. These results demonstrate that SLGO:Er3+/Yb3+ phosphors exhibit unique temperature sensing characteristics, highlighting their potential as temperature sensors.