Materials (Sep 2024)

Enhanced Raman Scattering in CVD-Grown MoS<sub>2</sub>/Ag Nanoparticle Hybrids

  • Dionysios M. Maratos,
  • Antonios Michail,
  • Alkeos Stamatelatos,
  • Spyridon Grammatikopoulos,
  • Dimitris Anestopoulos,
  • Vassilis Tangoulis,
  • Konstantinos Papagelis,
  • John Parthenios,
  • Panagiotis Poulopoulos

DOI
https://doi.org/10.3390/ma17174396
Journal volume & issue
Vol. 17, no. 17
p. 4396

Abstract

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Surface-Enhanced Raman Spectroscopy (SERS) is a powerful, non-destructive technique for enhancing molecular spectra, first discovered in 1974. This study investigates the enhancement of Raman signals from single- and few-layer molybdenum disulfide (MoS2) when interacting with silver nanoparticles. We synthesized a MoS2 membrane primarily consisting of monolayers and bilayers through a wet chemical vapor deposition method using metal salts. The silver nanoparticles were either directly grown on the MoS2 membrane or placed beneath it. Raman measurements revealed a significant increase in signal intensity from the MoS2 membrane on the silver nanoparticles, attributed to localized surface plasmon resonances that facilitate SERS. Our results indicate that dichalcogenide/plasmonic systems have promising applications in the semiconductor industry.

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