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Structural and luminescent diversities of Eu3+ activated Gd2O3 nanophosphors


Citation

Oon, Jew Lee and Hasbullah, Nurul Norfarina and Hui, San Lee and Soo, Kien Chen and Talib, Zainal Abidin (2017) Structural and luminescent diversities of Eu3+ activated Gd2O3 nanophosphors. Journal of Sustainability Science and Management. 48 - 56. ISSN 1823-8556

Abstract

In this work we investigated both structural and optical characteristic of erbium doped ternary TeO2-TiO2-Bi2O3 tellurite oxide based glasses, synthesized via melt-quench method. The X-ray diffraction (XRD) and differential scanning calorimetry (DSC) confirmed its glassy nature and stability. Raman analysis revealed the presence of various coordination state TeO2 network consisting stretching/bending vibrations of Te-O bonds in the [TeO4] trigonal bi-pyramid units and fraction of [TeO3, TeO3+1] trigonal pyramids. From optical absorption measurement both optical band gap and Judd-Ofelt analysis (intensity parameters Ωt (t=2, 4, 6), transition probabilities, and radiative lifetimes of the Er3+ ions) have been performed for both host and doped glasses respectively. Photoluminescence studies for upconversion and near-infrared emissions analysis (under 980 nm excitation at room temperature. Both optical transition mechanism which involved nonradiative energy transfer between Er3+ ions through cross-relaxation and energy migration were also explained in detailed.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: Penerbit Universiti Malaysia Terengganu
Keywords: Photoluminescent; Hydrothermal synthesis and nanowires
Depositing User: Mohd Hafiz Che Mahasan
Date Deposited: 15 Oct 2018 03:01
Last Modified: 15 Oct 2018 03:01
URI: http://psasir.upm.edu.my/id/eprint/63301
Statistic Details: View Download Statistic

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