Staff View: Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis

Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis

This paper presents the study on synthesized yttrium aluminum garnet (YAG), europium-doped YAG (YAG: Eu), and europium and dysprosium co-doped YAG (YAG: Eu, Dy) phosphors prepared by combustion synthesis (CS) using a mixture of fuel (urea). The effects of Eu3+ and Dy3+ ions concentration and anneali...

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Main Authors:	Tamuri, Abd. Rahman, Ahmad, Nor Ezzaty, Ghazali, Nurliyana Nabilah, Husin, Rosli
Format:	Article
Published:	Malaysian Society of Analytical Sciences 2020
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/91150/ https://mjas.analis.com.my/mjas/v24_n5/pdf/Rahman_24_5_16.pdf
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spelling	my.utm.911502021-05-31T13:47:33Z http://eprints.utm.my/id/eprint/91150/ Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis Tamuri, Abd. Rahman Ahmad, Nor Ezzaty Ghazali, Nurliyana Nabilah Husin, Rosli QC Physics This paper presents the study on synthesized yttrium aluminum garnet (YAG), europium-doped YAG (YAG: Eu), and europium and dysprosium co-doped YAG (YAG: Eu, Dy) phosphors prepared by combustion synthesis (CS) using a mixture of fuel (urea). The effects of Eu3+ and Dy3+ ions concentration and annealing temperature were analysed using by X-ray diffraction (XRD) and photoluminescence (PL). YAG nano-crystalline powders were calcined at a temperature range of 900 ℃ to 1200 ℃ for 4 hours. Europium and dysprosium were added in different concentrations in the range of 0.1 at.% to 1.0 at.% to the coarsened pure YAG particles to understand its influences on the optical properties and sintered microstructures. The doping of YAG: Eu and co-doped YAG: Eu, Dy was calcined at 1100 ℃ for 4 hours. X-ray diffraction results showed the phosphors are single-phase YAG with crystalline sizes ranging from 30 to 40 nm. The room temperature photoluminescence results confirmed the introduction of the ion in the host lattice and its optical activation for all the Eu3+ and Dy3+ ions concentrations. The CIE1931 color coordinates showed the sample's emission laid in the near red region for Eu3+ ion concentration and near white region for the addition of Eu3+ and Dy3+ ion concentration. Eu3+ ion concentration of 1.0 at.% achieved the highest emission spectra intensity while the highest emission spectra was achieved at 0.5 at.% for Dy3+ ion concentration and the ion luminescence were preferentially excited with 395 nm for YAG: Eu while, 353 nm for YAG: Eu, Dy wavelength photons. Malaysian Society of Analytical Sciences 2020-10 Article PeerReviewed Tamuri, Abd. Rahman and Ahmad, Nor Ezzaty and Ghazali, Nurliyana Nabilah and Husin, Rosli (2020) Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis. Malaysian Journal of Analytical Sciences, 24 (5). pp. 783-790. ISSN 1394-2506 https://mjas.analis.com.my/mjas/v24_n5/pdf/Rahman_24_5_16.pdf
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	QC Physics
spellingShingle	QC Physics Tamuri, Abd. Rahman Ahmad, Nor Ezzaty Ghazali, Nurliyana Nabilah Husin, Rosli Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis
description	This paper presents the study on synthesized yttrium aluminum garnet (YAG), europium-doped YAG (YAG: Eu), and europium and dysprosium co-doped YAG (YAG: Eu, Dy) phosphors prepared by combustion synthesis (CS) using a mixture of fuel (urea). The effects of Eu3+ and Dy3+ ions concentration and annealing temperature were analysed using by X-ray diffraction (XRD) and photoluminescence (PL). YAG nano-crystalline powders were calcined at a temperature range of 900 ℃ to 1200 ℃ for 4 hours. Europium and dysprosium were added in different concentrations in the range of 0.1 at.% to 1.0 at.% to the coarsened pure YAG particles to understand its influences on the optical properties and sintered microstructures. The doping of YAG: Eu and co-doped YAG: Eu, Dy was calcined at 1100 ℃ for 4 hours. X-ray diffraction results showed the phosphors are single-phase YAG with crystalline sizes ranging from 30 to 40 nm. The room temperature photoluminescence results confirmed the introduction of the ion in the host lattice and its optical activation for all the Eu3+ and Dy3+ ions concentrations. The CIE1931 color coordinates showed the sample's emission laid in the near red region for Eu3+ ion concentration and near white region for the addition of Eu3+ and Dy3+ ion concentration. Eu3+ ion concentration of 1.0 at.% achieved the highest emission spectra intensity while the highest emission spectra was achieved at 0.5 at.% for Dy3+ ion concentration and the ion luminescence were preferentially excited with 395 nm for YAG: Eu while, 353 nm for YAG: Eu, Dy wavelength photons.
format	Article
author	Tamuri, Abd. Rahman Ahmad, Nor Ezzaty Ghazali, Nurliyana Nabilah Husin, Rosli
author_facet	Tamuri, Abd. Rahman Ahmad, Nor Ezzaty Ghazali, Nurliyana Nabilah Husin, Rosli
author_sort	Tamuri, Abd. Rahman
title	Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis
title_short	Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis
title_full	Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis
title_fullStr	Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis
title_full_unstemmed	Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis
title_sort	structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis
publisher	Malaysian Society of Analytical Sciences
publishDate	2020
url	http://eprints.utm.my/id/eprint/91150/ https://mjas.analis.com.my/mjas/v24_n5/pdf/Rahman_24_5_16.pdf
_version_	1702169652114751488
score	13.211869

Structural and optical properties of dysprosium and europium co-doped with yttrium aluminium garnet nanocrystalline powders prepared by combustion synthesis

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