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<p>A silicate inorganic phosphor matrix, CJU-1-Eu (K<sub>3</sub>EuSi<sub>6</sub>O<sub>15</sub>), based on rice husk-derived biomass silicon, was synthesized <i>via</i> a hydrothermal method. The material was doped with Tb<sup>3+</sup> ions, and the effect of Tb<sup>3+</sup> concentration was investigated, resulting in a series of tunable white-light inorganic phosphors (CJU-1-Eu:<i>x</i>Tb<sup>3+</sup>) ranging from warm white to cool white. The CJU-1-Eu:0.04Tb<sup>3+</sup> inorganic white-light phosphor was combined with a UV chip to produce the white-light-emitting diode (WLED) device. The device exhibited CIE coordinates of (0.332, 0.327) and the color rendering index (CRI) of 86.5 at 100 mA current. This white-light phosphor achieves both the recycling and high-value utilization of rice husk ash.</p>

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Rice Husk-derived Biomass Silicon for Single-phase White-light Inorganic Phosphor and WLEDs

  • 期刊论文

  • 发表日期：

    2025年5月2日

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  • Wenhang Guo,
  • Liang Zeng,
  • Xinyuan Zhang,
  • Xiaoyu Cai,
  • Tan Su,
  • Zhongmin Su

摘要

A silicate inorganic phosphor matrix, CJU-1-Eu (K3EuSi6O15), based on rice husk-derived biomass silicon, was synthesized via a hydrothermal method. The material was doped with Tb3+ ions, and the effect of Tb3+ concentration was investigated, resulting in a series of tunable white-light inorganic phosphors (CJU-1-Eu:xTb3+) ranging from warm white to cool white. The CJU-1-Eu:0.04Tb3+ inorganic white-light phosphor was combined with a UV chip to produce the white-light-emitting diode (WLED) device. The device exhibited CIE coordinates of (0.332, 0.327) and the color rendering index (CRI) of 86.5 at 100 mA current. This white-light phosphor achieves both the recycling and high-value utilization of rice husk ash.