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

doi:10.1021/nn5000354

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 journal › Article › peer-review

61 Scopus citations

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 language	English
Pages (from-to)	3575-3583
Number of pages	9
Journal	ACS Nano
Volume	8
Issue number	4
DOIs	https://doi.org/10.1021/nn5000354
State	Published - 22 Apr 2014
Externally published	Yes

Keywords

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

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10.1021/nn5000354

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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.",

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AU - Yadgarov, Lena

AU - Choi, Charina L.

AU - Sedova, Anastasiya

AU - Cohen, Ayala

AU - Rosentsveig, Rita

AU - Bar-Elli, Omri

AU - Oron, Dan

AU - Dai, Hongjie

AU - Tenne, Reshef

PY - 2014/4/22

Y1 - 2014/4/22

N2 - 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.

AB - 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.

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KW - semiconducting nanoparticles

KW - surface plasmon scattering

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

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