A metal-dielectric-graphene sandwich for surface enhanced Raman spectroscopy

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...

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Bibliographic Details
Published inNanoscale Vol. 6; no. 17; pp. 9925 - 9929
Main Authors Yu, Xuechao, Tao, Jin, Shen, Youde, Liang, Guozhen, Liu, Tao, Zhang, Yongzhe, Wang, Qi Jie
Format Journal Article
LanguageEnglish
Published England 07.09.2014
Subjects
Damping
Dielectrics
Fluorescence
Nanostructure
Plasmonics
Plasmons
Quenching
Thin films
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Summary: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 fluorescence quenching with optimized dielectric layer thickness. 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 fluorescence quenching with optimized dielectric layer thickness.
Bibliography:10.1039/c4nr02301c
Electronic supplementary information (ESI) available. See: DOI
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ISSN:2040-3364
2040-3372
DOI:10.1039/c4nr02301c