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