Scholarlink

<p>This study was aim to develop transparent oxyfluoride glass ceramics (GCs) embedded with β-NaYF<sub>4</sub> nanocrystals co-doped with Bi<sup>3+</sup>/Tb<sup>3+</sup> for tunable luminescence applications and research the details of the energy transfer (ET) process. The combination of Bi<sup>3+</sup> as a sensitizer and Tb<sup>3+</sup> as an activator was strategically selected to exploit their complementary spectroscopic properties and potential synergistic effects in oxyfluoride environments. Unlike conventional rare earth pairs, this novel dopant combination offers advantages in terms of broader excitation bands and more efficient energy conversion pathways. By controlling Tb<sup>3</sup>⁺ concentration (0.05–0.8&#xa0;mol%), the emission color was tuned from blue-violet (CIE: 0.1696, 0.0093) to green (CIE: 0.2325, 0.3783). Spectral analysis revealed efficient ET from Bi<sup>3+</sup> to Tb<sup>3+</sup> with a maximum efficiency of 56%, as verified by fluorescence decay measurements. The Dexter’s theoretical analysis indictated dipole–dipole interaction as the dominant energy transfer mechanism. These findings show the material potential for solid-state lighting and optical sensor applications.</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

Optical properties and energy transfer mechanism of Bi3+/Tb3+ doped NaYF4 glass ceramics

  • 期刊论文

  • 发表日期：

    2025年9月11日

查看全文
  • Youjun Cai,
  • Kaikai Ren,
  • Liang Ke,
  • Huimin Ding,
  • Yuepin Zhang

摘要

This study was aim to develop transparent oxyfluoride glass ceramics (GCs) embedded with β-NaYF4 nanocrystals co-doped with Bi3+/Tb3+ for tunable luminescence applications and research the details of the energy transfer (ET) process. The combination of Bi3+ as a sensitizer and Tb3+ as an activator was strategically selected to exploit their complementary spectroscopic properties and potential synergistic effects in oxyfluoride environments. Unlike conventional rare earth pairs, this novel dopant combination offers advantages in terms of broader excitation bands and more efficient energy conversion pathways. By controlling Tb3⁺ concentration (0.05–0.8 mol%), the emission color was tuned from blue-violet (CIE: 0.1696, 0.0093) to green (CIE: 0.2325, 0.3783). Spectral analysis revealed efficient ET from Bi3+ to Tb3+ with a maximum efficiency of 56%, as verified by fluorescence decay measurements. The Dexter’s theoretical analysis indictated dipole–dipole interaction as the dominant energy transfer mechanism. These findings show the material potential for solid-state lighting and optical sensor applications.