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<p>Fused Y<sub>2</sub>O<sub>3</sub>–Al<sub>2</sub>O<sub>3</sub>–B<sub>2</sub>O<sub>3</sub> glasses with Sb<sub>2</sub>O<sub>3</sub> additives have been synthesized and their spectral-luminescent and optical properties were studied. The doping leads to the appearance strong UV absorption and a decrease in the optical band gap width and Urbach energy. The luminescence of these glasses is represented by a broad, weaklystructured band extending from the near-UV to the near-IR spectral regions and has been attributed to superposition of the <sup>3</sup>P<sub>1</sub> → <sup>1</sup>S<sub>0</sub> bands of different types of Sb<sup>3+</sup> optical sites and the Sb<sup>3+</sup> → Sb<sup>5+</sup> charge transfer band. The quantum yield of this luminescence at room temperature and band-to-band excitation for the weakly-doped glass is close to 20%. The luminescence decay was studied at 298 and 77 K and the reasons preventing a greater quantum yield were considered.</p>

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Spectral-Luminescent and Optical Properties of Antimony-Doped Yttrium–Alumoborate Glasses

  • 期刊论文

  • 发表日期：

    2025年7月5日

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  • G. E. Malashkevich,
  • V. V. Kouhar,
  • A. A. Romanenka,
  • A. A. Sukhodola,
  • I. V. Prusova,
  • N. V. Golubev,
  • M. Z. Ziyatdinova,
  • E. S. Ignat’eva,
  • V. N. Sigaev

摘要

Fused Y2O3–Al2O3–B2O3 glasses with Sb2O3 additives have been synthesized and their spectral-luminescent and optical properties were studied. The doping leads to the appearance strong UV absorption and a decrease in the optical band gap width and Urbach energy. The luminescence of these glasses is represented by a broad, weaklystructured band extending from the near-UV to the near-IR spectral regions and has been attributed to superposition of the 3P1 → 1S0 bands of different types of Sb3+ optical sites and the Sb3+ → Sb5+ charge transfer band. The quantum yield of this luminescence at room temperature and band-to-band excitation for the weakly-doped glass is close to 20%. The luminescence decay was studied at 298 and 77 K and the reasons preventing a greater quantum yield were considered.