Two orders of magnitude extra SERS enhancement on silver nanoparticle-based substrate induced by laser irradiation in nitrogen ambient

Chen Jin,Ji'an Chen,Zhengyang Du,Chang Liu,Fei Liu,Jun Hu,Min Han

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy（2022）

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摘要

•Photoactivation of Ag NPs in nitrogen contributes to two order of extra SERS.•SERS with photoactivation time fits a logistic dose-response function.•Sub-nano scale near-field coupling between Ag NPs and photo-generated Ag clusters.

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关键词

SERS,Plasmonics,Near-field coupling,Sub-nanoscale

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