Citation
Abstract
In this work, zinc silicate glass system (ZnO-SiO2) doped with various europium ion (Eu3+) concentrations derived from white rice husk ash (WRHA) were synthesized using melt and quench method. All samples determined by X-ray diffractometer (XRD) showed amorphous phase structure. The surface micrographs detected by Field emission scanning electron microscopy (FESEM) showed Eu3+ addition had reduced the sample’s porosity. Fourier transform infrared (FTIR) revealed the presence of Eu3+ ions had weakened the absorption peaks of SiO4. Meanwhile, ultra-violet visible spectroscopy (UV–vis) showed the absorption edges were shifted towards higher wavelength with Eu3+ addition. Band gap values were increased from 2.97 eV to 4.23 eV when Eu3+ dopant increased but decreased back to 3.98 eV at highest concentration. Photoluminescence spectroscopy (PL) analysis showed intense red emission at 600 nm corresponding to 5D0 → 7F2 transition were enhanced by Eu3+ doping. Hence, their luminescent properties are useful for optical device such as white light emitting diodes.
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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.rinp.2019.102596 |
| Publisher: | Elsevier |
| Keywords: | Zinc silicate glass; Europium; Rice husk; Optical properties; Solid state |
| Depositing User: | Nurul Ainie Mokhtar |
| Date Deposited: | 08 Nov 2022 01:29 |
| Last Modified: | 08 Nov 2022 01:29 |
| Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.rinp.2019.102596 |
| URI: | http://psasir.upm.edu.my/id/eprint/79810 |
| Statistic Details: | View Download Statistic |
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