Merck

Optical and structural properties of Ag:Ta2O5 nanocomposites.

Journal of nanoscience and nanotechnology (2013-07-19)
Geon Joon Lee, Hee Soo Kim, Chong Seung Yoon, Jihye Kim, Inkyu Park, Young Pak Lee
RESUMO

In this paper, we investigated the optical and structural properties of the Ag:Ta2O5 nanocomposites. The nanocomposite films were prepared by magnetron co-sputtering of Ta2O5 with Ag chips. The transmission electron microscopy images clearly revealed that Ag nanoparticles were successfully produced by post-thermal annealing of the deposited films. The reflection spectra exhibited the surface plasmon resonance behavior. The photoluminescence (PL) spectra indicated that the Ag:Ta2O5 nanocomposites exhibited larger PL intensity than pure Ag or pure Ta2O5. The PL enhancement is thought to be due to the surface plasmon resonance of Ag nanoparticles. From the spatial intensity distributions that were obtained by solving Maxwell equations using the three-dimensional, finite-difference time-domain method, we found that there was strong confinement of optical field near the Ag nanoparticle. This optical confinement effect makes it possible to exhibit the enhanced PL.

MATERIAIS
Número do produto
Marca
Descrição do produto

Sigma-Aldrich
Silver, colloidal, 65-75% Ag basis
Sigma-Aldrich
Silver, foil, thickness 1.0 mm, 99.99% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 0.1 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 2.0 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, nanopowder, <150 nm particle size, 99% trace metals basis
Sigma-Aldrich
Silver, rod, diam. 7.0 mm, 99.99% trace metals basis
Sigma-Aldrich
Silver, wool, diam. 0.05 mm, ≥99.9% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 0.127 mm, 99.99% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 1.0 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 0.5 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 1.0 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 0.1 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, powder, <250 μm, 99.99% trace metals basis
Sigma-Aldrich
Silver, shot, 1-3 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 1.5 mm, 99.9% trace metals basis
Sigma-Aldrich
Tantalum, foil, thickness 0.05 mm, ≥99.9% trace metals basis
Sigma-Aldrich
Tantalum, nanopowder, <25 nm particle size (BET), ≥99% trace metals basis
Sigma-Aldrich
Tantalum, powder, −325 mesh, 99.9% trace metals basis
Sigma-Aldrich
Silver nanowires, diam. × L 115 nm × 20-50 μm, 0.5% (isopropyl alcohol suspension)
Sigma-Aldrich
Silver nanowires, diam. × L 60 nm × 10 μm, 0.5% (isopropyl alcohol suspension)
Sigma-Aldrich
Tantalum, powder, 60-100 mesh, 99.9%
Sigma-Aldrich
Silver, conductive paste
Sigma-Aldrich
Silver, foil, thickness 0.5 mm, 99.99% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 0.25 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 1.0 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 0.5 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, foil, thickness 0.075 mm, 99.9% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 1.5 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Silver, wire, diam. 0.25 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Silver, rod, diam. 3.2 mm, 99.98% trace metals basis