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Tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing

The demand for tunable surface plasmon (SP) of embedded metal nanoparticles (NPs) in rare earth doped inorganic lasing glasses is ever-growing. Following melt quenching method Er3+ doped zinc-boro-tellurite glasses containing silver (Ag) NPs are prepared. Glasses are heat treated (thermally annealed...

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Main Authors: Said Mahraz, Z. A., Sahar, M. R., Ghoshal, S. K.
Format: Conference or Workshop Item
Published: Trans Tech Publications Ltd 2016
Subjects:
QC Physics
Online Access:http://eprints.utm.my/id/eprint/73599/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959874357&doi=10.4028%2fwww.scientific.net%2fMSF.846.85&partnerID=40&md5=ef522e69fae52a325205bec04216b4bf
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spelling my.utm.735992017-11-28T05:01:14Z http://eprints.utm.my/id/eprint/73599/ Tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing Said Mahraz, Z. A. Sahar, M. R. Ghoshal, S. K. QC Physics The demand for tunable surface plasmon (SP) of embedded metal nanoparticles (NPs) in rare earth doped inorganic lasing glasses is ever-growing. Following melt quenching method Er3+ doped zinc-boro-tellurite glasses containing silver (Ag) NPs are prepared. Glasses are heat treated (thermally annealed) at varying temperatures and time duration to alter the NPs morphology which generates SP. The annealing assisted SP resonance mediated modification in spectral features is discerned. Samples heat treatment at 410°C for 6 hrs duration ensures the reduction of Ag+ ions to Ag° NPs. Thermally annealed glasses are characterized via XRD, UV–Vis-IR absorption, photoluminescence spectroscopy, and TEM imaging. XRD spectra confirm the amorphous nature of the glass and TEM image reveals the existence of homogeneously distributed spherically shaped silver NPs of average diameter ~4.5 nm. NPs are found to grow with the increase of both annealing time and temperature. The UV–Vis spectra exhibit seven absorption bands corresponding to 4f–4f transitions of Er3+ ions in the wavelength range of 500-650 nm. The localized SPR band is evidenced at 550 and 580 nm. Heat treatment causes a red shift of the plasmon peaks ascribed to the alteration in glass refractive index. Furthermore, the glass sample annealed for 6 hrs displays maximum enhancement in the emission intensity corresponding to the peaks centered at 536 (2H11/2→4I15/2), 550 (4S3/2→4I15/2) and 632 nm (4F9/2→4I15/2). This enhancement is primarily attributed to the local field effect of the silver NPs. Admirable features of the results suggest that our systematic method for heat treatment in tuning NPs size assisted SPR may contribute towards the development of functional glass. Trans Tech Publications Ltd 2016 Conference or Workshop Item PeerReviewed Said Mahraz, Z. A. and Sahar, M. R. and Ghoshal, S. K. (2016) Tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing. In: 28th Regional Conference on Solid State Science and Technology, RCSSST 2014, 25-27 Nov 2014, Pahang, Malaysia. https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959874357&doi=10.4028%2fwww.scientific.net%2fMSF.846.85&partnerID=40&md5=ef522e69fae52a325205bec04216b4bf
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
Said Mahraz, Z. A.
Sahar, M. R.
Ghoshal, S. K.
Tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing
description The demand for tunable surface plasmon (SP) of embedded metal nanoparticles (NPs) in rare earth doped inorganic lasing glasses is ever-growing. Following melt quenching method Er3+ doped zinc-boro-tellurite glasses containing silver (Ag) NPs are prepared. Glasses are heat treated (thermally annealed) at varying temperatures and time duration to alter the NPs morphology which generates SP. The annealing assisted SP resonance mediated modification in spectral features is discerned. Samples heat treatment at 410°C for 6 hrs duration ensures the reduction of Ag+ ions to Ag° NPs. Thermally annealed glasses are characterized via XRD, UV–Vis-IR absorption, photoluminescence spectroscopy, and TEM imaging. XRD spectra confirm the amorphous nature of the glass and TEM image reveals the existence of homogeneously distributed spherically shaped silver NPs of average diameter ~4.5 nm. NPs are found to grow with the increase of both annealing time and temperature. The UV–Vis spectra exhibit seven absorption bands corresponding to 4f–4f transitions of Er3+ ions in the wavelength range of 500-650 nm. The localized SPR band is evidenced at 550 and 580 nm. Heat treatment causes a red shift of the plasmon peaks ascribed to the alteration in glass refractive index. Furthermore, the glass sample annealed for 6 hrs displays maximum enhancement in the emission intensity corresponding to the peaks centered at 536 (2H11/2→4I15/2), 550 (4S3/2→4I15/2) and 632 nm (4F9/2→4I15/2). This enhancement is primarily attributed to the local field effect of the silver NPs. Admirable features of the results suggest that our systematic method for heat treatment in tuning NPs size assisted SPR may contribute towards the development of functional glass.
format Conference or Workshop Item
author Said Mahraz, Z. A.
Sahar, M. R.
Ghoshal, S. K.
author_facet Said Mahraz, Z. A.
Sahar, M. R.
Ghoshal, S. K.
author_sort Said Mahraz, Z. A.
title Tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing
title_short Tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing
title_full Tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing
title_fullStr Tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing
title_full_unstemmed Tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing
title_sort tuning surface plasmon in erbium-boro-tellurite nanoglass via thermal annealing
publisher Trans Tech Publications Ltd
publishDate 2016
url http://eprints.utm.my/id/eprint/73599/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959874357&doi=10.4028%2fwww.scientific.net%2fMSF.846.85&partnerID=40&md5=ef522e69fae52a325205bec04216b4bf
_version_ 1643656694349168640
score 13.211869

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