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Plasmon excitation and damping in noble metal nanoparticle-MoS2 nanocomposites
Author(s): Gregory T. Forcherio; Mourad Benamara; D. Keith Roper
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Paper 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.

Paper Details

Date Published: 16 September 2016
PDF: 5 pages
Proc. SPIE 9919, Nanophotonic Materials XIII, 991911 (16 September 2016); doi: 10.1117/12.2237831
Show Author Affiliations
Gregory T. Forcherio, Univ. of Arkansas (United States)
Mourad Benamara, Univ. of Arkansas (United States)
D. Keith Roper, Univ. of Arkansas (United States)


Published in SPIE Proceedings Vol. 9919:
Nanophotonic Materials XIII
Stefano Cabrini; Gilles Lérondel; Adam M. Schwartzberg; Taleb Mokari, Editor(s)

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