Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35682
Title: ITO/Au/ITO sandwich structure for near-infrared plasmonics
Authors: Fang, X
Mak, CL 
Dai, JY 
Li, K
Ye, H
Leung, CW 
Keywords: Transparent conductive oxide
ITO/Au/ITO
Pulsed laser deposition
Electrical and optical properties
Plasma frequency
Issue Date: 2014
Publisher: American Chemical Society
Source: ACS applied materials and interfaces, 2014, v. 6, no. 18, p. 15743-15752 How to cite?
Journal: ACS applied materials and interfaces 
Abstract: ITO/Au/ITO trilayers with varying gold spacer layer thicknesses were deposited on glass substrates by pulsed laser deposition. Transmission electron microscopy measurements demonstrated the continuous nature of the Au layer down to 2.4 nm. XRD patterns clearly showed an enhanced crystallinity of the ITO films promoted by the insertion of the gold layer. Compared with a single layer of ITO with a carrier concentration of 7.12 x 10(20) cm(-3), the ITO/Au/ITO structure achieved an effective carrier concentration as high as 3.26 x 10(22) cm(-3). Transmittance and ellipsometry measurements showed that the optical properties of ITO/Au/ITO films were greatly influenced by the thickness of the inserted gold layer. The cross-point wavelength of the trilayer samples was reduced with increasing gold layer thickness. Importantly, the trilayer structure exhibited a reduced loss (compared with plain Au) in the near-infrared region, suggesting its potential for plasmonic applications in the near-infrared range.
URI: http://hdl.handle.net/10397/35682
ISSN: 1944-8244
EISSN: 1944-8252
DOI: 10.1021/am5026165
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