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Indexed by:会议论文

Date of Publication:2007-01-01

Included Journals:EI、CPCI-S

Volume:336-338

Page Number:2575-+

Key Words:Au/SiO2; optical absorption spectra; Maxwell-Garnett effective medium theory

Abstract:Au/SiO2 nano-composite multilayer thin films with different thickness were prepared on a quartz substrate by magnetron plasma sputtering. The microstructure, morphology and optical properties of the films were investigated by using TEM and optical absorption spectra. [Au/SiO2] X 5 and [Au/SiO2] X 11 multilayer thin films have well-defined interface. The thickness of the multilayer was 60nm and 130 nm for the thin films with 5 and 1 l layers, respectively. The optical absorption peaks due to the surface plasma resonance appeared at a wavelength of 560 nm for the both [Au/SiO2] X 5 and [Au/SiO2] X 11 thin films. The intensity of the absorption peak increased with increasing numbers of deposition layers. The optical absorption spectra of Au/SiO2 multilayer thin films are well agreement with the theoretical optical absorption spectra calculated from rewritten Maxwell-Garnett effective medium theory.