Staff View: A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles

A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles

Nanoparticles (NPs) size dependent enhancement of the infrared-to-visible frequency up-conversion (UC) and absorption coefficient in silver NPs embedded Er3+ doped tellurite glasses on pumping with the 976 nm radiation are investigated. Rate equations are derived by developing a comprehensive 4-leve...

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Main Authors:	Ghoshal, Sib Krishna, Sahar, M. Rahim, Dousti, M. Reza, Arifin, Ramli, Rohani, M. Supar, Hamzah, Khaidzirh
Format:	Article
Published:	2012
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/46493/ http://dx.doi.org/10.4028/www.scientific.net/AMR.501.61
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id	my.utm.46493
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spelling	my.utm.464932017-09-12T04:02:38Z http://eprints.utm.my/id/eprint/46493/ A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles Ghoshal, Sib Krishna Sahar, M. Rahim Dousti, M. Reza Arifin, Ramli Rohani, M. Supar Hamzah, Khaidzirh TA Engineering (General). Civil engineering (General) Nanoparticles (NPs) size dependent enhancement of the infrared-to-visible frequency up-conversion (UC) and absorption coefficient in silver NPs embedded Er3+ doped tellurite glasses on pumping with the 976 nm radiation are investigated. Rate equations are derived by developing a comprehensive 4-level model in integrating the effects of quantum confinement and local field of silver NPs. Considering the spherical NPs size distribution as Gaussian, an analytical expression for the luminescence intensity and absorption coefficient are obtained for the first time. An enhancement in UC emission intensity of the green bands (2H11/2?4I15/2 and 4S3/2?4I15/2) and red band (4F9/2?4I15/2) emission of Er3+ ion at temperature 250 K and at optimized Er3+ concentration 1.0 mol% is observed up to few times in the presence of silver NPs. Furthermore, the green emission shows larger enhancement than the red emission. The observed of Er3+ luminescence is mainly attributed to the local field effects namely the surface plasmon resonance of silver NPs that causes an intensified electromagnetic field around NPs, resulting in enhanced optical transitions of Er3+ ions in the vicinity. The model is quite general and can be applied to other rare earth doped glasses containing metallic NPs. Our results on NPs size dependent emission intensity and absorption coefficient are in conformity with other findings. The present systematic study provides useful information for further development of UC lasers and sensors. 2012 Article PeerReviewed Ghoshal, Sib Krishna and Sahar, M. Rahim and Dousti, M. Reza and Arifin, Ramli and Rohani, M. Supar and Hamzah, Khaidzirh (2012) A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles. Advanced Materials Research, 501 . pp. 61-65. ISSN 1022-6680 http://dx.doi.org/10.4028/www.scientific.net/AMR.501.61
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	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Ghoshal, Sib Krishna Sahar, M. Rahim Dousti, M. Reza Arifin, Ramli Rohani, M. Supar Hamzah, Khaidzirh A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles
description	Nanoparticles (NPs) size dependent enhancement of the infrared-to-visible frequency up-conversion (UC) and absorption coefficient in silver NPs embedded Er3+ doped tellurite glasses on pumping with the 976 nm radiation are investigated. Rate equations are derived by developing a comprehensive 4-level model in integrating the effects of quantum confinement and local field of silver NPs. Considering the spherical NPs size distribution as Gaussian, an analytical expression for the luminescence intensity and absorption coefficient are obtained for the first time. An enhancement in UC emission intensity of the green bands (2H11/2?4I15/2 and 4S3/2?4I15/2) and red band (4F9/2?4I15/2) emission of Er3+ ion at temperature 250 K and at optimized Er3+ concentration 1.0 mol% is observed up to few times in the presence of silver NPs. Furthermore, the green emission shows larger enhancement than the red emission. The observed of Er3+ luminescence is mainly attributed to the local field effects namely the surface plasmon resonance of silver NPs that causes an intensified electromagnetic field around NPs, resulting in enhanced optical transitions of Er3+ ions in the vicinity. The model is quite general and can be applied to other rare earth doped glasses containing metallic NPs. Our results on NPs size dependent emission intensity and absorption coefficient are in conformity with other findings. The present systematic study provides useful information for further development of UC lasers and sensors.
format	Article
author	Ghoshal, Sib Krishna Sahar, M. Rahim Dousti, M. Reza Arifin, Ramli Rohani, M. Supar Hamzah, Khaidzirh
author_facet	Ghoshal, Sib Krishna Sahar, M. Rahim Dousti, M. Reza Arifin, Ramli Rohani, M. Supar Hamzah, Khaidzirh
author_sort	Ghoshal, Sib Krishna
title	A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles
title_short	A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles
title_full	A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles
title_fullStr	A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles
title_full_unstemmed	A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles
title_sort	model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles
publishDate	2012
url	http://eprints.utm.my/id/eprint/46493/ http://dx.doi.org/10.4028/www.scientific.net/AMR.501.61
_version_	1643652051264077824
score	13.211869

A model for enhanced up-conversion luminescence in erbium-doped tellurite glass containing silver nanoparticles

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