Synthesis and luminescence of SrAl2O4: Eu2+, Dy3+

This study systematically discusses the effects of the synthesis process of SrAl2O4:Eu2+, Dy3+ in reducing the firing temperature and reducing the percentage of concentration of Eu2O3 and Dy2O3. The influence of firing temperature and rare earth doping on crystal structure, morphology, and its lumin...

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Autores principales:	Ahmad-Fauzi, M., Nazarov, Michael V., Azizan, A.
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2012
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/53435c52452f4633a63bca3af75f7505
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spelling	oai:doaj.org-article:53435c52452f4633a63bca3af75f75052021-11-21T12:01:43ZSynthesis and luminescence of SrAl2O4: Eu2+, Dy3+2537-63651810-648Xhttps://doaj.org/article/53435c52452f4633a63bca3af75f75052012-01-01T00:00:00Zhttps://mjps.nanotech.md/archive/2012/article/18997https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365This study systematically discusses the effects of the synthesis process of SrAl2O4:Eu2+, Dy3+ in reducing the firing temperature and reducing the percentage of concentration of Eu2O3 and Dy2O3. The influence of firing temperature and rare earth doping on crystal structure, morphology, and its luminescent properties were analyzed by X-ray diffraction (XRD), Raman scattering, Photoluminescence excitation (PLE) and photoluminescence emission (PL) spectroscopy, and scanning electron microscopy (SEM). The emission intensity becomes stronger as the firing temperature increases from 1100°C to 1250°C. SrAl2O4:Eu2+, Dy3+ firing at 1250°C shows the maximum photoluminescence intensity at 0.5 mol % Eu2O3 and 1 mol % Dy2O3 addition. A phase transformation from SrAl4O7 to SrAl2O4 and Sr4Al14O25 is found with increasing firing temperature. The synthesized phosphors reveal the presence of the crystalline monoclinic structure of SrAl2O4 as a major phase (JCPDS card no. 74-0794) and the intermediate phase orthorhombic structure of Sr4Al14O25. Small amount of doped Eu2O3 and Dy2O3 has almost no effect on the crystalline phase composition. The proposed firing temperature and mole concentration of the activator and co-activator is lower in comparison with other conventional solid state methods and allows us to obtain the SrAl2O4:Eu2+, Dy3+ phosphor with improved properties.Ahmad-Fauzi, M.Nazarov, Michael V.Azizan, A.Azizan, A.D.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 11, Iss 1-2, Pp 78-93 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Ahmad-Fauzi, M. Nazarov, Michael V. Azizan, A. Azizan, A. Synthesis and luminescence of SrAl2O4: Eu2+, Dy3+
description	This study systematically discusses the effects of the synthesis process of SrAl2O4:Eu2+, Dy3+ in reducing the firing temperature and reducing the percentage of concentration of Eu2O3 and Dy2O3. The influence of firing temperature and rare earth doping on crystal structure, morphology, and its luminescent properties were analyzed by X-ray diffraction (XRD), Raman scattering, Photoluminescence excitation (PLE) and photoluminescence emission (PL) spectroscopy, and scanning electron microscopy (SEM). The emission intensity becomes stronger as the firing temperature increases from 1100°C to 1250°C. SrAl2O4:Eu2+, Dy3+ firing at 1250°C shows the maximum photoluminescence intensity at 0.5 mol % Eu2O3 and 1 mol % Dy2O3 addition. A phase transformation from SrAl4O7 to SrAl2O4 and Sr4Al14O25 is found with increasing firing temperature. The synthesized phosphors reveal the presence of the crystalline monoclinic structure of SrAl2O4 as a major phase (JCPDS card no. 74-0794) and the intermediate phase orthorhombic structure of Sr4Al14O25. Small amount of doped Eu2O3 and Dy2O3 has almost no effect on the crystalline phase composition. The proposed firing temperature and mole concentration of the activator and co-activator is lower in comparison with other conventional solid state methods and allows us to obtain the SrAl2O4:Eu2+, Dy3+ phosphor with improved properties.
format	article
author	Ahmad-Fauzi, M. Nazarov, Michael V. Azizan, A. Azizan, A.
author_facet	Ahmad-Fauzi, M. Nazarov, Michael V. Azizan, A. Azizan, A.
author_sort	Ahmad-Fauzi, M.
title	Synthesis and luminescence of SrAl2O4: Eu2+, Dy3+
title_short	Synthesis and luminescence of SrAl2O4: Eu2+, Dy3+
title_full	Synthesis and luminescence of SrAl2O4: Eu2+, Dy3+
title_fullStr	Synthesis and luminescence of SrAl2O4: Eu2+, Dy3+
title_full_unstemmed	Synthesis and luminescence of SrAl2O4: Eu2+, Dy3+
title_sort	synthesis and luminescence of sral2o4: eu2+, dy3+
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2012
url	https://doaj.org/article/53435c52452f4633a63bca3af75f7505
work_keys_str_mv	AT ahmadfauzim synthesisandluminescenceofsral2o4eu2dy3 AT nazarovmichaelv synthesisandluminescenceofsral2o4eu2dy3 AT azizana synthesisandluminescenceofsral2o4eu2dy3 AT azizana synthesisandluminescenceofsral2o4eu2dy3
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Synthesis and luminescence of SrAl2O4: Eu2+, Dy3+

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