Som, Tirtha and Karmakar, Basudeb (2011) Nano silver:antimony glass hybrid nanocomposites and their enhanced fluorescence application. Solid State Sciences, 13 (5). pp. 887-895. ISSN 1293-2558

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Abstract

A series of KBS antimony glass (K(2)O-B2O3 Sb(2)O(3)) nanocomposites embedding non-spherical silver (Ag(0)) nanoparticles have been synthesized by a single-step melt-quench in-situ thermochemical reduction technique without employing any external reducing agent. X-ray and selected area electron diffractions manifest growth of Ag(0) nanoparticles along the (111) and (200) crystallographic planes. The transmission electron microscopic image reveals rod-shaped (longitudinal lengths between 8 and 24 nm) as well as quasi-spherical particles. The quasi-spherical particles show bimodal size distribution. Small quasi-particles have sizes varying from 6 to 24 nm and large quasi-particles ranges from 45 to 105 nm. These complex distributions of particles are also revealed in the UV Vis absorption spectra and the surface plasmon resonance bands show multiple peaks. These have been explained by electrodynamics theories. When co-doped with Er(2)O(3) and excited at 798 nm, the two upconverted emission bands of Er(3+) centered at 536 (green) and 645 (red) nm undergo intensification by 3 and 8 fold respectively. It is due to local electric field enhancement effect of nanoparticles induced by Ag(0) SPR and energy transfer from Ag(0) to Er(3+) ion. These nanocomposites are the promising materials for solar cells, LEDs, display and laser applications. (C) 2011 Elsevier Masson SAS. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Surface plasmon resonance; Silver nanoparticles; Antimony glass nanocomposites; Metal-enhanced photoluminescence
Subjects:	Glass
Divisions:	Glass
Depositing User:	Bidhan Chaudhuri
Date Deposited:	25 Jan 2012 06:35
Last Modified:	25 Feb 2013 08:42
URI:	http://cgcri.csircentral.net/id/eprint/425

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