Exploring Eu3+ -doped ZnO-SiO2 glass derived by recycling renewable source of waste rice husk for white-LEDs application

被引：20

作者：

Khaidir, Rahayu Emilia Mohamed ^{[1
]}

Fen, Yap Wing ^{[1
,2
]}

Zaid, Mohd Hafiz Mohd ^{[2
]}

Matori, Khamirul Amin ^{[1
,2
]}

Omar, Nur Alia Sheh ^{[1
]}

Anuar, Muhammad Fahmi ^{[2
]}

Wahab, Siti Aisyah Abdul ^{[1
]}

Azman, Aisyah Zakiah Khirel ^{[1
]}

机构：

[1] Univ Putra Malaysia, Inst Adv Technol, Upm Serdang 43400, Selangor, Malaysia

[2] Univ Putra Malaysia, Fac Sci, Dept Phys, Upm Serdang 43400, Selangor, Malaysia

来源：

RESULTS IN PHYSICS | 2019年 / 15卷

关键词：

Zinc silicate glass; Europium; Rice husk; Optical properties; Solid state; OPTICAL BAND-GAP; PHOTOLUMINESCENCE PROPERTIES; SPECTROSCOPIC PROPERTIES; ZINC; OXIDE; LUMINESCENCE; FABRICATION; PHOSPHORS; POWDERS; IONS;

D O I：

10.1016/j.rinp.2019.102596

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 D-5(0) -> F-7(2) transition were enhanced by Eu3+ doping. Hence, their luminescent properties are useful for optical device such as white light emitting diodes.

引用

页数：7

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