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Title: Raman spectroscopy of morphology-controlled deposition of Au on graphene
Authors: Qiu, C.
Zhou, H.
Cao, B.
Sun, L.
Yu, T. 
Issue Date: Aug-2013
Citation: Qiu, C., Zhou, H., Cao, B., Sun, L., Yu, T. (2013-08). Raman spectroscopy of morphology-controlled deposition of Au on graphene. Carbon 59 : 487-494. ScholarBank@NUS Repository.
Abstract: By tuning substrate temperatures in a thermal deposition process, Au nanostructures with different morphologies, such as polygons, dendrites, irregular islands and dense clusters have been obtained on graphene surface. The surface-enhanced Raman scattering (SERS) of graphene caused by gold decoration is systematically investigated. The enhancement factor of graphene G band and the extent of G band splitting are found to be dependent on the morphologies of gold clusters. A maximum enhancement factor as high as ∼270 is obtained for polygonal gold film deposited on monolayer graphene. Furthermore, as a SERS substrate, graphene combined with polygonal gold shows the highest Raman enhancing efficiency for crystal violet (CV) molecules. The mechanisms for the above results are discussed. © 2013 Elsevier Ltd.
Source Title: Carbon
ISSN: 00086223
DOI: 10.1016/j.carbon.2013.03.043
Appears in Collections:Staff Publications

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