Synthesis and enhanced photoluminescence in novel Au(core)Au-Ag(shell) nanoparticles embedded Nd(3+)-doped antimony oxide glass hybrid nanocomposites
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
View Archive InfoField | Value | |
Title |
Synthesis and enhanced photoluminescence in novel Au(core)Au-Ag(shell) nanoparticles embedded Nd(3+)-doped antimony oxide glass hybrid nanocomposites
|
|
Creator |
Som, Tirtha
Karmakar, Basudeb |
|
Subject |
Glass
|
|
Description |
Au(core)Au-Ag(shell) nanoparticles and Nd(3+) ions co-doped in a novel antimony(III) oxide based dielectric (glass) matrix were synthesized for the first time, by a new very simple single-step methodology involving selective thermo-chemical reduction without employing any external reducing agent. They were characterized by the evolution of UV-vis-NIR absorption and photoluminescence spectra, XRD patterns, TEM and SAED images. XRD and SAED indicate the building of core-shell nanoparticles through the formation of (1 1 1) and (2 0 0) planes whereas TEM advocates the generation of spherical and spheroidal particles of 22-107 nm sizes with various core morphologies. Photoluminescence upconversion exhibits two major emission bands of Nd(3+) ions at 540 (green) and 649 (deep-red) nm which undergo about 5-fold intensity enhancement by the nanoparticles. Such enhancement is attributed to the local field effect induced by plasmonic Au-Ag nanoparticles to Nd(3+) ions. These nanocomposites are promising for many nanophotonics applications. (C) 2011 Elsevier Ltd. All rights reserved.
|
|
Publisher |
Pergamon-Elsevier
|
|
Date |
2011-10
|
|
Type |
Article
PeerReviewed |
|
Format |
application/pdf
|
|
Identifier |
http://cgcri.csircentral.net/427/1/tirtha.pdf
Som, Tirtha and Karmakar, Basudeb (2011) Synthesis and enhanced photoluminescence in novel Au(core)Au-Ag(shell) nanoparticles embedded Nd(3+)-doped antimony oxide glass hybrid nanocomposites. Journal of Quantitative Spectroscopy & Radiative Transfer, 112 (15). pp. 2469-2479. ISSN 0022-4073 |
|
Relation |
http://cgcri.csircentral.net/427/
|
|