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Addition of ZnO nanoparticles on waste rice husk as potential host material for red-emitting phosphor


Mohamed Khaidir, Rahayu Emilia and Yap, Wing Fen and Mohd Zaid, Mohd Hafiz and Matori, Khamirul Amin and Sheh Omar, Nur Alia and Anuar, Muhammad Fahmi and Abdul Wahab, Siti Aisyah and Khirel Azman, Aisyah Zakiah (2020) Addition of ZnO nanoparticles on waste rice husk as potential host material for red-emitting phosphor. Materials Science in Semiconductor Processing, 106. art. no. 104774. pp. 1-11. ISSN 1369-8001


In this research, influence of zinc oxide (ZnO) addition in silica matrix to produce zinc silicate glass system (ZnO–SiO2) derived from white rice husk ash (WRHA) have been investigated via solid state method. The 90 wt percentage (wt.%) of silica content in WRHA has been proved by X-ray fluorescence spectroscopy (XRF). Hence, the compositions of (ZnOx–WRHA1-x) glass system were varied by x = 0.50, 0.55, 0.60, 0.65 and 0.70 wt% to study their structural and optical behaviors. The X-ray diffraction (XRD) patterns revealed that with the addition of ZnO in the silica matrix, the broad halo peaks became weaker and caused a few crystalline peaks to appear. Meanwhile, Fourier transform infrared spectroscopy (FTIR) revealed that absorption bands related to SiO4 unit group are weakened as amount of ZnO increased. This is due to the increase of non-bridging oxygen's (NBO's) formation in the glass structure which also affects the absorbance measurement by ultra violet visible spectroscopy (UV–Vis) to be shifted towards higher in wavelength as the composition of ZnO increases. Lattice distortion due to NBO's formation had decreased the band gap values from 4.28 eV to 3.95 eV. Overall, 60:40 ratio of ZnO against WRHA was selected as the best ratio to produce zinc silicate (Zn2SiO4) glass ceramics. Lastly, the characterization of europium (Eu3+) doped Zn2SiO4 glass ceramics with subject to sintering temperature also has been studied to prove that this material can be a great potential host matrix for red-emitting phosphor.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1016/j.mssp.2019.104774
Publisher: Elsevier
Keywords: Zinc oxide; Europium oxide; Zinc silicate glass; White rice husk ash; Optical band gap
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 15 Jun 2022 08:19
Last Modified: 15 Jun 2022 08:19
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.mssp.2019.104774
URI: http://psasir.upm.edu.my/id/eprint/87764
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