A metal–dielectric–graphene sandwich for surface enhanced raman spectroscopy

• Main Authors: Yu, Xuechao, Tao, Jin, Shen, Youde, Liang, Guozhen, Liu, Tao, Zhang, Yongzhe, Wang, Qi Jie
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Electric power
• Online Access: https://hdl.handle.net/10356/101507; http://hdl.handle.net/10220/24165
• Institution: Nanyang Technological University

The Raman intensity of Rhodamine B (RhB) is enhanced by inserting a thin high κ dielectric layer which reduces the surface plasmon damping at the gold–graphene interface. The results indicate that the Raman intensity increases sharply by plasmonic resonance enhancement while maintaining efficient fl...