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Optical Property of Au-doped <TEX>$TIO_2/SiO_2$</TEX> thin film
Optical Property of Au-doped $TIO_2/SiO_2$ thin film
Journal of the Korean Chemical Society. 2000. Feb, 44(1): 60-67
  • Published : February 20, 2000
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Jung, Mie-Won
Kim, Ji-Eun
Lee, Kyung-Chul

Abstract
The wavelength of the surface plasmon absorption depends on the dielectric matrix. $TiO_2/SiO_2$ complex oxide films doped with Au nanoclusters were prepared by sol-gel spin-coating method using $Ti(OPr^i)_4$, $Si(OEt)_4$, and $HAuCl_4{\cdot}7H_2O$. The wavelength of the maximum absorption of Au nanoehrsters in the $TiO_2/SiO_2$ thin films was obtained with lineality from 540 nm to 615 nm depending on the molar ratio of $TiO_2$. The particle sizes and structures of these nanoclusters have been identified through a TEM and X-ray diffraction patterns. The dielectric constants of $TiO_2/SiO_2$ thin films were calculated from the experimental results.