Optical properties of Au nanocluster embedded dielectric films

Composite films of Au and dielectric material (TiO 2 and/or mixed ZnS–SiO 2) with a wide range of Au fractions were fabricated through a co-sputtering method utilizing a multi-target sputtering system. The optical absorption spectra of these composite films demonstrated an absorption peak due to sur...

Full description

Saved in:
Bibliographic Details
Published in:Thin solid films 2000-12, Vol.377, p.97-102
Main Authors: Cho, Sunghun, Lee, Soonil, Oh, Soo-ghee, Park, Sung Jin, Kim, Won Mok, Cheong, Byung-ki, Chung, Moonkyo, Song, Ki Bong, Lee, Taek Sung, Kim, Soon Gwang
Format: Article
Language:English
Subjects:
Nanocluster
Optical non-linearity
Surface plasmon resonance
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Composite films of Au and dielectric material (TiO 2 and/or mixed ZnS–SiO 2) with a wide range of Au fractions were fabricated through a co-sputtering method utilizing a multi-target sputtering system. The optical absorption spectra of these composite films demonstrated an absorption peak due to surface plasmon resonance of embedded Au nanoclusters. It was found that, depending on the dielectric matrix, Au concentration, and post-deposition annealing, the wavelength of the surface plasmon resonance of nanoclusters shifted by 130 nm: from 550 to 680 nm. The third-order non-linear susceptibility χ (3) of these composite films, which also originates from field enhancement due to the surface plasmon resonance, demonstrated a corresponding variation.
ISSN:0040-6090
1879-2731
DOI:10.1016/S0040-6090(00)01391-2