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<p>In the present study, novel hexagonal GdInO<sub>3</sub>:Eu<sup>3+</sup> red phosphors were prepared by a high-temperature solid-state method. Their phase composition, microscopic morphology and luminescence properties were characterized using X-ray diffraction, scanning electron microscopy and photoluminescence spectroscopy. The results indicated that the crystal structure of the matrix material was unaffected by the doping of different concentrations of Eu<sup>3+</sup>. The GdInO<sub>3</sub>:Eu<sup>3+</sup> phosphors existed as irregular micro-sized polyhedra. They emitted 630&#xa0;nm red light when excited by 395&#xa0;nm ultraviolet and 467&#xa0;nm blue light sources. The optimal doping content of Eu<sup>3+</sup> was found to be 0.07 and the corresponding color coordinates of GdInO<sub>3</sub>:0.07 Eu<sup>3+</sup> phosphor were (0.6426, 0.3510), with a fluorescence lifetime of 1.839&#xa0;ms and activation energy (ΔE) of 0.15&#xa0;eV. A white light-emitting diode (LED) was prepared by mixing this red phosphor with commercially available blue and green phosphors, which exhibited remarkable white light emission. The chromaticity coordinates of the prepared device were (0.3638, 0.3481) with a color rendering index of 83.5. The results demonstrated that GdInO<sub>3</sub>:Eu<sup>3+</sup> is a good red light-emitting material, which can be utilized in white LEDs.</p>

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Preparation and performance analysis of GdInO3:Eu3+ phosphor for solid state lighting applications

  • 期刊论文

  • 发表日期：

    2025年6月25日

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  • Yuanyuan Lu,
  • Zhao Li,
  • Yan Zhang,
  • Kunyao Wu,
  • Yanan Wang,
  • Man Yu

摘要

In the present study, novel hexagonal GdInO3:Eu3+ red phosphors were prepared by a high-temperature solid-state method. Their phase composition, microscopic morphology and luminescence properties were characterized using X-ray diffraction, scanning electron microscopy and photoluminescence spectroscopy. The results indicated that the crystal structure of the matrix material was unaffected by the doping of different concentrations of Eu3+. The GdInO3:Eu3+ phosphors existed as irregular micro-sized polyhedra. They emitted 630 nm red light when excited by 395 nm ultraviolet and 467 nm blue light sources. The optimal doping content of Eu3+ was found to be 0.07 and the corresponding color coordinates of GdInO3:0.07 Eu3+ phosphor were (0.6426, 0.3510), with a fluorescence lifetime of 1.839 ms and activation energy (ΔE) of 0.15 eV. A white light-emitting diode (LED) was prepared by mixing this red phosphor with commercially available blue and green phosphors, which exhibited remarkable white light emission. The chromaticity coordinates of the prepared device were (0.3638, 0.3481) with a color rendering index of 83.5. The results demonstrated that GdInO3:Eu3+ is a good red light-emitting material, which can be utilized in white LEDs.