Scholarlink

<p>In this work, the conventional melt quenching approach is used to synthesize the Pr<sup>3+</sup> doped NaF-Bi<sub>2</sub>O<sub>3</sub>-B<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> (NBBS) glasses. The influence of Pr<sup>3+</sup> ions on their spectroscopic and structural characteristics in glass network is investigated. The amorphous nature of the samples has been amply verified by X-ray diffraction patterns. FTIR spectra show distinct basic vibrational bands in borate and silicate structural components (in the range from 500 to 3750&#xa0;cm<sup>− 1</sup>). In the UV-visible range, the absorption spectra showed four Pr<sup>3+</sup> ion absorption bands. Furthermore, in the absorption spectra, four Pr<sup>3+</sup> ion absorption bands were observed in the NIR regions (1300–2470&#xa0;nm). While utilizing Tauc plots to assess optical bandgap (Eg), it is observed that as the concentration of Pr<sup>3+</sup> increases from 0&#xa0;mol% to 1.5&#xa0;mol%, the bandgap decreases from 3.67&#xa0;eV to 3.50&#xa0;eV. In luminescence spectra, seven bands can be observed at about 483, 524, 534, 580, 604, 643, and 682&#xa0;nm as a consequence of Pr<sup>3+</sup> ion transitions. Strong variations in the emission band’s intensity are seen at around 604&#xa0;nm (<sup>3</sup>P<sub>0</sub>→<sup>3</sup>H<sub>6</sub>), after a progressive increase in Pr mol% in the glass matrix. According to CIE coordinates, emission changes from orange to reddish-orange as the quantity of Pr<sup>3+</sup> ions rises.</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

A Study of Structural, Optical and Photoluminescence Properties of Pr3+ Ions Doped Sodium Bismuth Borosilicate Glasses

  • 期刊论文

  • 发表日期：

    2025年1月22日

查看全文
  • Nakka Praveenkumar,
  • K. V. Madhuri,
  • D. V. Krishna Reddy,
  • M. Rami Reddy

摘要

In this work, the conventional melt quenching approach is used to synthesize the Pr3+ doped NaF-Bi2O3-B2O3-SiO2 (NBBS) glasses. The influence of Pr3+ ions on their spectroscopic and structural characteristics in glass network is investigated. The amorphous nature of the samples has been amply verified by X-ray diffraction patterns. FTIR spectra show distinct basic vibrational bands in borate and silicate structural components (in the range from 500 to 3750 cm− 1). In the UV-visible range, the absorption spectra showed four Pr3+ ion absorption bands. Furthermore, in the absorption spectra, four Pr3+ ion absorption bands were observed in the NIR regions (1300–2470 nm). While utilizing Tauc plots to assess optical bandgap (Eg), it is observed that as the concentration of Pr3+ increases from 0 mol% to 1.5 mol%, the bandgap decreases from 3.67 eV to 3.50 eV. In luminescence spectra, seven bands can be observed at about 483, 524, 534, 580, 604, 643, and 682 nm as a consequence of Pr3+ ion transitions. Strong variations in the emission band’s intensity are seen at around 604 nm (3P0→3H6), after a progressive increase in Pr mol% in the glass matrix. According to CIE coordinates, emission changes from orange to reddish-orange as the quantity of Pr3+ ions rises.