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|Title:||Raman spectroscopy of morphology-controlled deposition of Au on graphene||Authors:||Qiu, C.
|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. https://doi.org/10.1016/j.carbon.2013.03.043||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||URI:||http://scholarbank.nus.edu.sg/handle/10635/97743||ISSN:||00086223||DOI:||10.1016/j.carbon.2013.03.043|
|Appears in Collections:||Staff Publications|
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