:Au-antimony glass nanocomposites are synthesized in a new reducing glass (dielectric) matrix (mol%)
(KBS) by a single-step melt-quench technique involving selective thermochemical reduction principle. Transmission electron microscopic images reveal hexagonal
nanoparticles having major axes about
. Dichroic behavior arises due to hexagonal
nanoparticles of aspect ratio 1.2–1.3.
nanoparticles of concentration of
drastically enhances the intensity (2–5 folds) of both 536 (
, green) and 645 (
, red) nm emission bands of
. Local field enhancement induced by
surface plasmon resonance (SPR) and energy transfer from fluorescent
ions are found to be responsible for enhancement while, at very high Au concentration, energy transfer from
and optical reabsorption due to
SPR result in quenching.
© 2009 Optical Society of America