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Nonresonant Surface-Enhanced Raman Scattering of ZnO Quantum Dots with Au and Ag Nanoparticles

Abstract : Pronounced 104-fold enhancement of Raman scattering has been obtained for ZnO nanocrystals on substrates coated with 50 nm Ag nanoparticles under nonresonant excitation with a commercial red-emitting laser. This makes feasible beyond 10–18 mole detection of ZnO nanocrystals with a commercial setup using a 0.1 mW continuous wave laser and can be purposefully used in analytical applications where conjugated nanocrystals serve as Raman markers. For Au-coated surfaces the enhancement is much lower and the heating effects in the course of Raman experiments are pronounced.
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Journal articles
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https://hal-utt.archives-ouvertes.fr/hal-02369626
Contributor : Jean-Baptiste Vu Van <>
Submitted on : Tuesday, November 19, 2019 - 9:54:09 AM
Last modification on : Wednesday, January 29, 2020 - 5:46:10 PM

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Anna Rumyantseva, Serguei Kochtcheev, Pierre-Michel Adam, Sergey Gaponenko, Svetlana Vaschenko, et al.. Nonresonant Surface-Enhanced Raman Scattering of ZnO Quantum Dots with Au and Ag Nanoparticles. ACS Nano, American Chemical Society, 2013, 7 (4), pp.3420-3426. ⟨10.1021/nn400307a⟩. ⟨hal-02369626⟩

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