e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
ISSN-L : 1348-0391
Regular Papers
The Change of the Surface Morphology and Optical Properties During the Heat-Treatment for Silver Films Deposited on Silicas
Noritsugu HashimotoYoshitsugu YamamotoSeiji Niijima
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2005 Volume 3 Pages 120-124

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Abstract

Nano-sized silver particles generated by the evaporation-condensation method were deposited on the silica glass substrate or sol-gel derived silica film to form films, which were annealed at 100 to 500 °C. The surface morphology and optical absorption spectrum of the films thus obtained were observed. Furthermore, nonlinear optical properties of them were estimated using Z-scan technique. Absorption spectrum exhibited a peak due to localized surface plasmon resonance (LSPR), which was drastically shifted toward shorter wavelength side after annealing at 200 °C accompanying with the changing of the surface morphology. The nonlinear refractive index, γ, of silver films was negative, and its absolute value was decreased with increasing the annealing temperature. The largest contribution of LSPR resulted in the enhancement of γ when annealed at 100 °C. [DOI: 10.1380/ejssnt.2005.120]

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この記事はクリエイティブ・コモンズ [表示 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by/4.0/deed.ja
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