Som, Tirtha and Karmakar, Basudeb (2009) Surface plasmon resonance in nano-gold antimony glass-ceramic dichroic nanocomposites: One-step synthesis and enhanced fluorescence application. Applied Surface Science, 255 (23). pp. 9447-9452. ISSN 0169-4332

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Abstract

A single-step melt-quench in situ thermochemical reduction technique has been used to synthesize a new series of Au degrees nanoparticles embedded antimony glass-ceramic (K(2)O-B(2)O(3)-Sb(2)O(3)-ZnO) dichroic nanocomposites. X-ray and selected area electron diffractions manifest growth of Au degrees nanoparticles along (2 0 0) planes. The particle sizes obtained from X-ray diffraction patterns are found to vary in the range 4-21 nm. Dichroic behavior is attributed to the elliptical shape gold nanoparticles having aspect ratio 1.2, as observed from the transmission electron microscopy (TEM) images. The Au degrees nanoparticles exhibit surface plasmon resonance band (SPR) around 600 nm, which experiences red-shifts with increasing Au concentration. These nanocomposites when co-doped with Sm(2)O(3) and excited at 949 nm, exhibit 2-fold intensification of 636 nm red emission transition ((4)G(5/2) -> (6)H(9/2)) due to SPR induced local field enhancement of Au degrees nanoparticles and are promising materials for display applications. (C) 2009 Elsevier B.V. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Surface plasmon resonance; Nano gold; Antimony glass-ceramic; Nanocomposite; Enhanced fluorescence
Subjects:	Glass
Divisions:	Glass
Depositing User:	Bidhan Chaudhuri
Date Deposited:	02 Mar 2012 07:41
Last Modified:	02 Mar 2012 07:41
URI:	http://cgcri.csircentral.net/id/eprint/1119

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