Chemical Research in Chinese Universities ›› 2025, Vol. 41 ›› Issue (3): 557-563.doi: 10.1007/s40242-025-4248-0

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

GUO Wenhang1,2, ZENG Liang1,3, ZHANG Xinyuan1, CAI Xiaoyu1, SU Tan1, SU Zhongmin1,2,4   

  1. 1. Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130021, P. R. China;
    2. School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China;
    3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    4. State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130021, P. R. China
  • Received:2024-12-20 Revised:2025-03-26 Online:2025-06-01 Published:2025-05-27
  • Contact: SU Tan,E-mail:sutan_jlu@jlu.edu.cn E-mail:sutan_jlu@jlu.edu.cn
  • Supported by:
    This work was supported by the Science and Technology Research Project of the Jilin Provincial Education Department, China (No. JJKH20231132KJ).

Abstract: 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.

Key words: Rice husk-derived biomass silicon, Photoluminescence, White-light-emitting phosphor, Inorganic white-light-emitting diode (WLED)