Plasmon excitation and damping in noble metal nanoparticle-MoS2 nanocomposites

Gregory T. Forcherio; Mourad Benamara; D. Keith Roper

doi:10.1117/12.2237831

16 September 2016 Plasmon excitation and damping in noble metal nanoparticle-MoS₂ nanocomposites

Gregory T. Forcherio, Mourad Benamara, D. Keith Roper

Proceedings Volume 9919, Nanophotonic Materials XIII; 991911 (2016) https://doi.org/10.1117/12.2237831
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

Improved fundamental understanding of resonant optical and electric interactions between noble metal nanoparticles and 2D materials, such as semiconductive molybdenum disulfide (MoS₂), could benefit characterization of optoelectronic light harvesting schemes. Energy and damping of plasmon resonances of noble metal nanoparticle-decorated MoS₂ were examined via parallel synthesis of (a) approximate discrete dipole (DDA) simulations and (b) near-field electron energy loss (EELS) and far-field optical transmission spectroscopies. Energy of localized surface plasmon resonance altered by MoS₂ interactions was studied for gold nanospheres and silver nanoprisms. Augmented plasmon damping by injection of plasmon-excited electrons into the MoS₂ was measured in EELS and represented by DDA. These techniques support rapid improvements in nanoparticle-2D material prototypes for photocatalysis and photodetection, for example.

Conference Presentation

Citation Download Citation

Gregory T. Forcherio, Mourad Benamara, and D. Keith Roper "Plasmon excitation and damping in noble metal nanoparticle-MoS₂ nanocomposites", Proc. SPIE 9919, Nanophotonic Materials XIII, 991911 (16 September 2016); https://doi.org/10.1117/12.2237831

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