Structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping

Demand of high emission cross-section laser amplifier is ever-increasing. The rare earth ions (REIs) doped magnesium zinc sulfophosphate (PMZ) glasses with noble metal nanoparticles (NPs) inclusion were shown potential as laser host. This study reported that the emission/absorption traits of these R...

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Main Author:	Yusof, Nur Nabihah
Format:	Thesis
Language:	English
Published:	2020
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/101978/1/NurNabihahYusofPFS2020.pdf
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spelling	my-utm-ep.1019782023-07-25T10:04:54Z Structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping 2020 Yusof, Nur Nabihah QC Physics Demand of high emission cross-section laser amplifier is ever-increasing. The rare earth ions (REIs) doped magnesium zinc sulfophosphate (PMZ) glasses with noble metal nanoparticles (NPs) inclusion were shown potential as laser host. This study reported that the emission/absorption traits of these REIs inside the glass matrix could be improved using the NPs which enabled localized surface plasmon resonance (LSPR). The LSPR produces strong local electric field (LEF) in the vicinity of the REIs. The melt-quenching method was used to synthesize glass composition 58.5P2O5-20.0MgO-20.0ZnSO4-1.5 Nd2O3-yAg NPs-zTi NPs mol% where y and z could be in the range of 0.0-1.5 mol%. The co-embedment of two types of metal NPs inside the glass could provide flexibility to customize the generated LEF strength in the proximity of the REIs. The X-ray diffraction (XRD) analyses confirmed the amorphous nature of the as-quenched samples. The high-resolution transmission electron microscopy (HRTEM) images showed the nucleation of both Ag and Ti3O5 NPs inside the glass matrix. The nucleation of Ti into Ti3O5 NPs occurred via two-step Finke-Watzky mechanism. Both the Fourier transform infrared (FTIR) and Raman spectral analyses confirmed an insignificant structural change from the incorporation of the NPs into the glass matrix. The observed LSPR band of the Ag (?442 nm) and Ti3O5 (?588 and 774 nm) NPs verified their successful embedment into the host matrix. The ultraviolet-visible-near infrared (UV-Vis-NIR) absorption spectra of the glasses exhibited twelve characteristic absorption bands of Nd3+. The photoluminescence (PL) emission spectra of the prepared glasses disclosed a prominent yellow band around 585 nm, corresponding to the transition of 2G7/2+4G5/2?4I9/2 in Nd3+. The coupling of Ag and Ti NPs into the glass at a certain concentration could lead to PL intensity quenching. This ascribed to the local heating effect of Ti3O5 NPs. The Judd-Ofelt intensity and radiative parameters were calculated from the absorption and PL spectral data. The PMZ1.5Nd04Ti0.3Ag glass sample showed the highest stimulated emission cross-section of 4.78×10–24 cm2. The results suggested that the co-embedment of metal NPs into glass could be an innovative strategy to tailor the spectroscopic characteristics of the glasses which is potential for photonic and solid-state laser applications. 2020 Thesis http://eprints.utm.my/id/eprint/101978/ http://eprints.utm.my/id/eprint/101978/1/NurNabihahYusofPFS2020.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:145981 phd doctoral 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 Yusof, Nur Nabihah Structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping
description	Demand of high emission cross-section laser amplifier is ever-increasing. The rare earth ions (REIs) doped magnesium zinc sulfophosphate (PMZ) glasses with noble metal nanoparticles (NPs) inclusion were shown potential as laser host. This study reported that the emission/absorption traits of these REIs inside the glass matrix could be improved using the NPs which enabled localized surface plasmon resonance (LSPR). The LSPR produces strong local electric field (LEF) in the vicinity of the REIs. The melt-quenching method was used to synthesize glass composition 58.5P2O5-20.0MgO-20.0ZnSO4-1.5 Nd2O3-yAg NPs-zTi NPs mol% where y and z could be in the range of 0.0-1.5 mol%. The co-embedment of two types of metal NPs inside the glass could provide flexibility to customize the generated LEF strength in the proximity of the REIs. The X-ray diffraction (XRD) analyses confirmed the amorphous nature of the as-quenched samples. The high-resolution transmission electron microscopy (HRTEM) images showed the nucleation of both Ag and Ti3O5 NPs inside the glass matrix. The nucleation of Ti into Ti3O5 NPs occurred via two-step Finke-Watzky mechanism. Both the Fourier transform infrared (FTIR) and Raman spectral analyses confirmed an insignificant structural change from the incorporation of the NPs into the glass matrix. The observed LSPR band of the Ag (?442 nm) and Ti3O5 (?588 and 774 nm) NPs verified their successful embedment into the host matrix. The ultraviolet-visible-near infrared (UV-Vis-NIR) absorption spectra of the glasses exhibited twelve characteristic absorption bands of Nd3+. The photoluminescence (PL) emission spectra of the prepared glasses disclosed a prominent yellow band around 585 nm, corresponding to the transition of 2G7/2+4G5/2?4I9/2 in Nd3+. The coupling of Ag and Ti NPs into the glass at a certain concentration could lead to PL intensity quenching. This ascribed to the local heating effect of Ti3O5 NPs. The Judd-Ofelt intensity and radiative parameters were calculated from the absorption and PL spectral data. The PMZ1.5Nd04Ti0.3Ag glass sample showed the highest stimulated emission cross-section of 4.78×10–24 cm2. The results suggested that the co-embedment of metal NPs into glass could be an innovative strategy to tailor the spectroscopic characteristics of the glasses which is potential for photonic and solid-state laser applications.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Yusof, Nur Nabihah
author_facet	Yusof, Nur Nabihah
author_sort	Yusof, Nur Nabihah
title	Structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping
title_short	Structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping
title_full	Structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping
title_fullStr	Structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping
title_full_unstemmed	Structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping
title_sort	structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2020
url	http://eprints.utm.my/id/eprint/101978/1/NurNabihahYusofPFS2020.pdf
_version_	1776100817324998656

Structural and optical properties of silver and titanium nanoparticles co-embedded magnesium-zinc-sulfophosphate glass with neodymium doping

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