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<p>In this manuscript, GdF<sub>3</sub>:Ho<sup>3+</sup>/Yb<sup>3+</sup>upconversion phosphor particles have been prepared via the chemical co-precipitation method. The concentration of Ho<sup>3+</sup> and Yb<sup>3+</sup> dopants have been fixed while the components Zn<sup>2+</sup> and Ca<sup>2+</sup> ions concentration varied with the difference of 5&#xa0;mol%. The effect of these co-dopant ion concentration variations on both structural and optical properties have been studied. The structural properties have been studied through FE-SEM and XRD analysis. The organic/inorganic impurities have also been estimated in the prepared set of samples through FT-IR analysis. Comparative upconversion luminescence studies have been done for all samples on a fixed excitation power density of 98&#xa0;W/cm<sup>2</sup> of 980&#xa0;nm continuous wave diode Laser excitation. The effect of the co-doping ion concentration variation on the paramagnetic behavior of these samples has also been studied.</p>

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Modification in structural and optical properties of GdF3:Ho3+/Yb3+ upconversion nano particles via Zn2+ and Ca2+codoping concentration variation

  • 期刊论文

  • 发表日期：

    2025年2月6日

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  • Abhishek Kumar,
  • Lalit Kumar Dwivedi,
  • Pradeep Kumar Sharma,
  • Susheel Kumar Singh,
  • Avadhesh Pratap Singh,
  • Pankaj Kumar Verma

摘要

In this manuscript, GdF3:Ho3+/Yb3+upconversion phosphor particles have been prepared via the chemical co-precipitation method. The concentration of Ho3+ and Yb3+ dopants have been fixed while the components Zn2+ and Ca2+ ions concentration varied with the difference of 5 mol%. The effect of these co-dopant ion concentration variations on both structural and optical properties have been studied. The structural properties have been studied through FE-SEM and XRD analysis. The organic/inorganic impurities have also been estimated in the prepared set of samples through FT-IR analysis. Comparative upconversion luminescence studies have been done for all samples on a fixed excitation power density of 98 W/cm2 of 980 nm continuous wave diode Laser excitation. The effect of the co-doping ion concentration variation on the paramagnetic behavior of these samples has also been studied.