Scholarlink

<p>The fluorescent material SrLaGaO<sub>4</sub>:Er<sup>3+</sup> required for this study was synthesized using a high-temperature solid-state method. Characterization results confirmed that Er<sup>3+</sup> ions had been successfully doped into the matrix lattice. Under laser excitation at 378&#xa0;nm and 980&#xa0;nm, two emission centers at 527&#xa0;nm and 548&#xa0;nm were observed. The study utilized the dual-peak characteristics of the 527&#xa0;nm and 548&#xa0;nm emission spectra in the SrLaGaO<sub>4</sub>:Er<sup>3+</sup> emission spectrum to investigate the temperature-sensing performance of the fluorescent sample using the fluorescence intensity ratio (FIR) technique. Data analysis indicates that the temperature-sensitive system based on upconversion (UC) luminescence exhibits a absolute sensitivity (<i>S</i><sub>a</sub>) of 0.56% K<sup>−1</sup> and a relative sensitivity (<i>S</i><sub>r</sub>) of 1.14% K<sup>−1</sup>; whereas the system based on downconversion (DC) luminescence demonstrates a higher <i>S</i><sub>a</sub> (0.62% K<sup>−1</sup>) and a similar <i>S</i><sub>r</sub> (1.07% K<sup>−1</sup>). The results indicate that SrLaGaO<sub>4</sub>:Er<sup>3+</sup> fluorescent powders have good application potential in the field of optical temperature sensing.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Er3+-doped SrLaGaO4 green phosphor upconversion and downconversion luminescence for optical thermometry

  • 期刊论文

  • 发表日期：

    2026年2月23日

查看全文
  • Weihai Chen,
  • Ruirui Cui,
  • Chaoyong Deng

摘要

The fluorescent material SrLaGaO4:Er3+ required for this study was synthesized using a high-temperature solid-state method. Characterization results confirmed that Er3+ ions had been successfully doped into the matrix lattice. Under laser excitation at 378 nm and 980 nm, two emission centers at 527 nm and 548 nm were observed. The study utilized the dual-peak characteristics of the 527 nm and 548 nm emission spectra in the SrLaGaO4:Er3+ emission spectrum to investigate the temperature-sensing performance of the fluorescent sample using the fluorescence intensity ratio (FIR) technique. Data analysis indicates that the temperature-sensitive system based on upconversion (UC) luminescence exhibits a absolute sensitivity (Sa) of 0.56% K−1 and a relative sensitivity (Sr) of 1.14% K−1; whereas the system based on downconversion (DC) luminescence demonstrates a higher Sa (0.62% K−1) and a similar Sr (1.07% K−1). The results indicate that SrLaGaO4:Er3+ fluorescent powders have good application potential in the field of optical temperature sensing.