Abstract
We report surface-enhanced Raman scattering (SERS) from a “sandwich” structure of two silver layers, in which a thin film of activated carbon is embedded. The first silver layer is prepared by electroless deposition on a non-conductive substrate, while the second one is electrodeposited on the adsorbed carbon powder. This “sandwich” does not only yield stable SERS signals from the carbon but also a strong additional enhancement (compared to SERS from simple carbon/silver or silver/carbon structures), stemming from a coupling of the two silver layers. The “sandwich” structure should be widely applicable since its preparation is very simple.
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We thank Annette Fuchs for preparing the SEM micrograph and Manxi Zhu for helpful discussions.
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Yang, Y., Bittner, A.M. & Kern, K. A new SERS-active sandwich structure. J Solid State Electrochem 11, 150–154 (2007). https://doi.org/10.1007/s10008-006-0214-z
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DOI: https://doi.org/10.1007/s10008-006-0214-z