Scholarlink

<p>In recent years, single-phase white phosphors have been widely used in white light-emitting diodes due to their high efficiency and low cost. In this study, Ba<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub>: Dy<sup>3+</sup> and Ba<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub>: Dy<sup>3+</sup> with Li<sub>2</sub>CO<sub>3</sub> as flux were synthesized via high-temperature solid-state reaction. The crystal structure and composition were analyzed using X-ray diffraction, X-ray Photoelectron Spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Photoluminescence, photoluminescence excitation, lifetime, UV diffuse reflectance spectroscopy, and CIE were used to determine the luminescence characteristics of prepared phosphors. Ba<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub>: Dy<sup>3+</sup> showed two distinct peaks at 481 and 574&#xa0;nm. The optimal concentration and excitation wavelength are 0.12 and 348&#xa0;nm, respectively. The experimental results indicate that Li<sub>2</sub>CO<sub>3</sub>, as flux agent, effectively enhance the luminescence intensity and thermal stability of Ba<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub>: 0.12Dy<sup>3 +</sup> at the optimal concentration. Besides that, Ba<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub>: 0.12Dy<sup>3+</sup> with 2% Li<sub>2</sub>CO<sub>3</sub> exhibited a CIE (0.3315, 0.3636) close to the white center of (0.33,0.33). The results indicate that 2% Li<sub>2</sub>CO<sub>3</sub> as a flux can significantly enhance the intensity and stability of Ba<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub>: 0.12 Dy<sup>3+</sup>. This phosphor, as a single-phase white phosphor material, can be widely used in lighting and display applications due to its ease of preparation and its CIE coordinates close to standard white light.</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

Preparation and enhanced photoluminescence features of white-emitting single-phased Ba3Sc(PO4)3: Dy3+ phosphors for light-emitting diodes though the use of flux

  • 期刊论文

  • 发表日期：

    2026年2月2日

查看全文
  • Rui Wang,
  • Yaobiao Chen,
  • Fang Zhao,
  • Yidan Wang,
  • Ze Zhang

摘要

In recent years, single-phase white phosphors have been widely used in white light-emitting diodes due to their high efficiency and low cost. In this study, Ba3Sc(PO4)3: Dy3+ and Ba3Sc(PO4)3: Dy3+ with Li2CO3 as flux were synthesized via high-temperature solid-state reaction. The crystal structure and composition were analyzed using X-ray diffraction, X-ray Photoelectron Spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Photoluminescence, photoluminescence excitation, lifetime, UV diffuse reflectance spectroscopy, and CIE were used to determine the luminescence characteristics of prepared phosphors. Ba3Sc(PO4)3: Dy3+ showed two distinct peaks at 481 and 574 nm. The optimal concentration and excitation wavelength are 0.12 and 348 nm, respectively. The experimental results indicate that Li2CO3, as flux agent, effectively enhance the luminescence intensity and thermal stability of Ba3Sc(PO4)3: 0.12Dy3 + at the optimal concentration. Besides that, Ba3Sc(PO4)3: 0.12Dy3+ with 2% Li2CO3 exhibited a CIE (0.3315, 0.3636) close to the white center of (0.33,0.33). The results indicate that 2% Li2CO3 as a flux can significantly enhance the intensity and stability of Ba3Sc(PO4)3: 0.12 Dy3+. This phosphor, as a single-phase white phosphor material, can be widely used in lighting and display applications due to its ease of preparation and its CIE coordinates close to standard white light.