Chemical vapour deposited graphene-mediated enhanced SERS performance in silver nanostructures. Issue 8 (24th May 2023)

• Record Type: Journal Article
• Authors: Nalini, Savitha; Thomas, Subin; Anju, K. S.; Jayaraj, M. K.; Rajeev Kumar, K.
• Is Part Of: Materials science and technology. Volume 39:Issue 8(2023)
• Page Start: 933
• Page End: 940
• Publication Date: 2023-05-24
• Subjects: CVD -- graphene -- surface-enhanced Raman scattering -- GSERS substrate; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2022.2152923
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : This work demonstrates how chemical vapour deposited monolayer graphene enhances the SERS activity in a conventional plasmonic substrate. The single-layer graphene is evidenced by various spectroscopic analyses. A thin coating of silver on graphene/SiO2 /Si substrate serves as the graphene-mediated SERS (GSERS) platform, which offers a detection limit (LOD) of 10 −14 M and an enhancement factor of 9.48 × 10 8 for the R6G molecule. The performance of the GSERS substrate is superior to that of the substrate without graphene, which has a LOD of 10 −10 M only. The detection of low concentrations of Sudan-I is also demonstrated with the GSERS substrate. A highly sensitive simple two-stage SERS substrate made of high-quality graphene film is the crowning achievement of this study.