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<p>Herein, we present the spectroscopic characteristics of Pr<sup>3+</sup>-doped Li<sub>2</sub>O + CaO+Bi<sub>2</sub>O<sub>3</sub>+B<sub>2</sub>O<sub>3</sub> (LCBBPr) glasses fabricated via melt-quenching. XRD analysis reveals the amorphous nature of the prepared glasses, while FTIR analysis reveals Pr<sup>3+</sup>-induced BO<sub>4</sub>-to-BO<sub>3</sub> conversions, leading to the formation of NBOs that enhance luminescence. Various physical measurements were evaluated and correlated with structural, optical, and luminescence properties. Thermal (DTA) analysis reveals high structural stability, with a T<sub>g</sub> of 481&#xa0;°C and a T<sub>c</sub> of 625&#xa0;°C. The PL analysis reveals, the prepared LCBBPr glasses exhibit a strong orange-red emission peak at 602&#xa0;nm, due to the <sup>1</sup>D<sub>2</sub>→<sup>3</sup>H<sub>4</sub> transition, when excited at 444&#xa0;nm. Among all, the LCBBPr<sub>0.1</sub> glass has demonstrated an enhanced orange-red emission with an exceptional colour purity of 98.9%, a high emission power of 1.78 × 10<sup>4</sup> W/nm, and a low CCT of 1260&#xa0;K, making it a potential candidate for orange-red emission applications.</p>

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Structural and spectroscopic investigations of Pr3+-doped Li2O + CaO+Bi2O3+B2O3 glasses

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Areej S. Alqarni,
  • N. Srinatha,
  • Priya A. Hoskeri,
  • A. Madhu

摘要

Herein, we present the spectroscopic characteristics of Pr3+-doped Li2O + CaO+Bi2O3+B2O3 (LCBBPr) glasses fabricated via melt-quenching. XRD analysis reveals the amorphous nature of the prepared glasses, while FTIR analysis reveals Pr3+-induced BO4-to-BO3 conversions, leading to the formation of NBOs that enhance luminescence. Various physical measurements were evaluated and correlated with structural, optical, and luminescence properties. Thermal (DTA) analysis reveals high structural stability, with a Tg of 481 °C and a Tc of 625 °C. The PL analysis reveals, the prepared LCBBPr glasses exhibit a strong orange-red emission peak at 602 nm, due to the 1D2→3H4 transition, when excited at 444 nm. Among all, the LCBBPr0.1 glass has demonstrated an enhanced orange-red emission with an exceptional colour purity of 98.9%, a high emission power of 1.78 × 104 W/nm, and a low CCT of 1260 K, making it a potential candidate for orange-red emission applications.