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Abstract <p>The effect of holmium concentration on the luminescent properties of nanosized Ho<sub><i>x</i></sub>Y<sub>1&#xa0;–&#xa0;<i>x</i></sub>VO<sub>4</sub> powders (where <i>x</i> = 0, 0.05, 0.10, or 0.15) synthesized by coprecipitation of yttrium vanadate under microwave irradiation has been established. The elemental and phase composition, the average particle size of the nanopowders (27 ± 2 nm) have been determined, and the insertion of Ho<sup>3+</sup> ions into the site of Y<sup>3+</sup> ions has been confirmed. The limiting amount of holmium ions (10%), above which concentration quenching of luminescence occurs, has been revealed. For Ho<sub>0.05</sub>Y<sub>0.95</sub>VO<sub>4</sub>, the luminescence intensity increased by 1.5&#xa0;times compared to YVO<sub>4</sub>, with a distinct band at 550 nm due to the <sup>5</sup>F<sub>4</sub>/<sup>5</sup>S<sub>2</sub> → <sup>5</sup>I<sub>8</sub> transition being observed.</p>

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Microwave Synthesis and Luminescent Properties of Nanosized Yttrium Vanadate Doped with Holmium Ions

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • E. V. Tomina,
  • E. V. Popova,
  • B. V. Sladkopevtsev,
  • Nguyen Anh Tien,
  • E. S. Khudyakova,
  • A. A. Solovyeva,
  • A. A. Sinelnikov,
  • A. V. Doroshenko

摘要

Abstract

The effect of holmium concentration on the luminescent properties of nanosized HoxY1 – xVO4 powders (where x = 0, 0.05, 0.10, or 0.15) synthesized by coprecipitation of yttrium vanadate under microwave irradiation has been established. The elemental and phase composition, the average particle size of the nanopowders (27 ± 2 nm) have been determined, and the insertion of Ho3+ ions into the site of Y3+ ions has been confirmed. The limiting amount of holmium ions (10%), above which concentration quenching of luminescence occurs, has been revealed. For Ho0.05Y0.95VO4, the luminescence intensity increased by 1.5 times compared to YVO4, with a distinct band at 550 nm due to the 5F4/5S2 → 5I8 transition being observed.