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<p>This work investigates the phase and morphological features and the photoluminescence (PL) and thermoluminescence (TL) properties of BaZrO<sub>3</sub>:Eu<sup>3+</sup> nanophosphors fabricated using a low-cost combustion method. Powder x-ray diffraction (PXRD) studies confirmed the phase purity of the samples, with an average crystallite size on the order of 33–46&#xa0;nm. The bandgap of the prepared samples was estimated in the range of 4.2–5.58&#xa0;eV. The morphology of the samples was confirmed by scanning electron microscopy (SEM), which revealed the formation of nanoparticles. The PL features of the samples were studied systematically. The phosphors excited at 254&#xa0;nm UV light produced an orange emission, with major emission peaks observed at 594 nm (<sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub>) and 612 nm (<sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>3</sub>). The concentration quenching of photoluminescence was found at 3&#xa0;mol.% Eu<sup>3+</sup> doping concentration. The color features including Commission Internationale de I’Eclairage (CIE) color space and correlated color temperature (CCT) confirmed the red emission of the prepared samples. In addition, the kinetic parameters of the samples were successfully estimated in TL studies, which are discussed in detail. These results indicate that the fabricated samples are suitable for use in display devices and lighting and dosimetry applications.</p> Graphical Abstract <p></p>

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Cost--Effective Synthesis of Eu3+-Activated BaZrO3 for Optoelectronic and Dosimetry Applications

  • 期刊论文

  • 发表日期：

    2025年3月17日

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  • T. N. Silpa,
  • C. Pandurangappa,
  • Yashaswini,
  • S. Pratibha

摘要

This work investigates the phase and morphological features and the photoluminescence (PL) and thermoluminescence (TL) properties of BaZrO3:Eu3+ nanophosphors fabricated using a low-cost combustion method. Powder x-ray diffraction (PXRD) studies confirmed the phase purity of the samples, with an average crystallite size on the order of 33–46 nm. The bandgap of the prepared samples was estimated in the range of 4.2–5.58 eV. The morphology of the samples was confirmed by scanning electron microscopy (SEM), which revealed the formation of nanoparticles. The PL features of the samples were studied systematically. The phosphors excited at 254 nm UV light produced an orange emission, with major emission peaks observed at 594 nm (5D0 → 7F2) and 612 nm (5D0 → 7F3). The concentration quenching of photoluminescence was found at 3 mol.% Eu3+ doping concentration. The color features including Commission Internationale de I’Eclairage (CIE) color space and correlated color temperature (CCT) confirmed the red emission of the prepared samples. In addition, the kinetic parameters of the samples were successfully estimated in TL studies, which are discussed in detail. These results indicate that the fabricated samples are suitable for use in display devices and lighting and dosimetry applications.

Graphical Abstract