Structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics

A series of Eu3+ and Dy3+ co-doped strontium borophosphate ceramics were synthesized using solid-state reaction method at 1000 oC for 4 hours. The influence of strontium oxide composition on structural features of the borophosphate ceramics were investigated by using FT-IR spectroscopy. The addition...

Full description

Saved in:

Bibliographic Details
Main Author:	Leong, Pau Ming
Format:	Thesis
Language:	English
Published:	2015
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/54625/25/LeongPauMingMFS2015.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.54625
record_format	uketd_dc
spelling	my-utm-ep.546252020-10-21T00:57:38Z Structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics 2015-03 Leong, Pau Ming QC Physics A series of Eu3+ and Dy3+ co-doped strontium borophosphate ceramics were synthesized using solid-state reaction method at 1000 oC for 4 hours. The influence of strontium oxide composition on structural features of the borophosphate ceramics were investigated by using FT-IR spectroscopy. The addition of higher strontium oxide composition into the host ceramics matrix leads to an increase in ceramic network polymerization due to the replacement of bridging oxygen bonds by non-bridging oxygen bonds. The crystalline phases of ceramics were characterized by X-ray diffraction (XRD). XRD pattern revealed that strontium borophosphate ceramic existed in polycrystalline structure. Optimum composition was chosen from strontium borophosphate series based on the XRD and photoluminescence analysis. Eu and Dy were used as activator to enhance photoluminescence emission. The optimum composition determined from this study is 10SrO-40B2O3-50P2O5 codoped with 2 mol% of Eu3+ and 1 mol% of Dy3+. The result of this study shows that photoluminescence emission and UV excitation due to energy transfer occurred within Dy3+-Eu3+ pair ions under 350 nm and 394 nm excitation separately. The energy transfer between Dy3+ and Eu3+ takes place through resonant energy transfer mechanism. The prominent emission peaks of Eu3+ and Dy3+ co-activated strontium borophopshate ceramics were 484 nm, 574 nm, 613 nm, 660 nm and 697 nm which were assigned to transition of 4F9/2 ? 6H15/2, 4F9/2 ? 6H13/2, 5D0 ? 7F2, 4F9/2 ? 6F11/2, and 5D0 ? 7F4. Prominent hypersensitive dipole transition was affected by structural surrounding environment of activators and polycrystalline structural network. This study shows that a new polycrystalline strontium borophosphate ceramics doped with Eu and Dy is suitable for luminescent materials. 2015-03 Thesis http://eprints.utm.my/id/eprint/54625/ http://eprints.utm.my/id/eprint/54625/25/LeongPauMingMFS2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86710 masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QC Physics
spellingShingle	QC Physics Leong, Pau Ming Structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics
description	A series of Eu3+ and Dy3+ co-doped strontium borophosphate ceramics were synthesized using solid-state reaction method at 1000 oC for 4 hours. The influence of strontium oxide composition on structural features of the borophosphate ceramics were investigated by using FT-IR spectroscopy. The addition of higher strontium oxide composition into the host ceramics matrix leads to an increase in ceramic network polymerization due to the replacement of bridging oxygen bonds by non-bridging oxygen bonds. The crystalline phases of ceramics were characterized by X-ray diffraction (XRD). XRD pattern revealed that strontium borophosphate ceramic existed in polycrystalline structure. Optimum composition was chosen from strontium borophosphate series based on the XRD and photoluminescence analysis. Eu and Dy were used as activator to enhance photoluminescence emission. The optimum composition determined from this study is 10SrO-40B2O3-50P2O5 codoped with 2 mol% of Eu3+ and 1 mol% of Dy3+. The result of this study shows that photoluminescence emission and UV excitation due to energy transfer occurred within Dy3+-Eu3+ pair ions under 350 nm and 394 nm excitation separately. The energy transfer between Dy3+ and Eu3+ takes place through resonant energy transfer mechanism. The prominent emission peaks of Eu3+ and Dy3+ co-activated strontium borophopshate ceramics were 484 nm, 574 nm, 613 nm, 660 nm and 697 nm which were assigned to transition of 4F9/2 ? 6H15/2, 4F9/2 ? 6H13/2, 5D0 ? 7F2, 4F9/2 ? 6F11/2, and 5D0 ? 7F4. Prominent hypersensitive dipole transition was affected by structural surrounding environment of activators and polycrystalline structural network. This study shows that a new polycrystalline strontium borophosphate ceramics doped with Eu and Dy is suitable for luminescent materials.
format	Thesis
qualification_level	Master's degree
author	Leong, Pau Ming
author_facet	Leong, Pau Ming
author_sort	Leong, Pau Ming
title	Structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics
title_short	Structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics
title_full	Structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics
title_fullStr	Structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics
title_full_unstemmed	Structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics
title_sort	structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2015
url	http://eprints.utm.my/id/eprint/54625/25/LeongPauMingMFS2015.pdf
_version_	1747817691188559872

Structural and luminescence properties of europium oxide and dysprosium oxide codoped strontium borophosphate ceramics

Similar Items