Influence of localized surface plasmon resonance and free electrons on the optical properties of ultrathin Au films : a study of the aggregation effect

• Main Authors: Li, X. D., Chen, T. P., Liu, Y., Leong, K. C.
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/102912; http://hdl.handle.net/10220/19068
• Institution: Nanyang Technological University

The contributions of localized surface plasmon resonance (LSPR) and Drude (free electrons) absorption to the complex dielectric function of ultrathin Au films were investigated with spectroscopic ellipsometry. When the Au film thickness is thinner than ~10 nm, Au nanoparticles (NPs) are formed as a...