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. 2016 Jul 8;6:29508. doi: 10.1038/srep29508

Figure 1. Comparison of SERS signals of 10−7 M R6G from bare glass and from various thin films with different thicknesses.

Figure 1

The highest enhancement was obtained from Ag/Ag2O thin films with 10 nm thickness. The broad background enhancement is due to the fluorescent emission upon decomposition of Ag2O films under laser light exposure. Picture in the graph shows R6G in a glass vial.