Dependence of the absorption and optical surface plasmon scattering of MoS2 nanoparticles on aspect ratio, size, and media

Lena Yadgarov, Charina L. Choi, Anastasiya Sedova, Ayala Cohen, Rita Rosentsveig, Omri Bar-Elli, Dan Oron, Hongjie Dai, Reshef Tenne

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The optical and electronic properties of suspensions of inorganic fullerene-like nanoparticles of MoS2 are studied through light absorption and zeta-potential measurements and compared to those of the corresponding microscopic platelets. The total extinction measurements show that, in addition to excitonic peaks and the indirect band gap transition, a new peak is observed at 700-800 nm. This spectral peak has not been reported previously for MoS2. Comparison of the total extinction and decoupled absorption spectrum indicates that this peak largely originates from scattering. Furthermore, the dependence of this peak on nanoparticle size, shape, and surface charge, as well as solvent refractive index, suggests that this transition arises from a plasmon resonance.

Original languageEnglish
Pages (from-to)3575-3583
Number of pages9
JournalACS nano
Volume8
Issue number4
DOIs
Publication statusPublished - Apr 22 2014

Keywords

  • aspect ratio
  • inorganic fullerene-like nanostructures
  • semiconducting nanoparticles
  • surface plasmon scattering

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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  • Cite this

    Yadgarov, L., Choi, C. L., Sedova, A., Cohen, A., Rosentsveig, R., Bar-Elli, O., Oron, D., Dai, H., & Tenne, R. (2014). Dependence of the absorption and optical surface plasmon scattering of MoS2 nanoparticles on aspect ratio, size, and media. ACS nano, 8(4), 3575-3583. https://doi.org/10.1021/nn5000354