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Plasmonic Core-Shell Silicon Carbide-Graphene Nanoparticles

Plasmonic Core-Shell Silicon Carbide-Graphene Nanoparticles

Devin Coleman, Lorenzo Mangolini

ACS Omega. 2019 Jun 10;4(6):10089-10093.

PMID: 31460101

Abstract:

We demonstrate the synthesis of silicon carbide nanoparticles exhibiting monolayer to few-layer graphene coatings and characterize their optical response to confirm their plasmonic behavior. A multistep, low-temperature plasma process is used to nucleate silicon particles, carbonize them in-flight to give small silicon carbide nanocrystals, and coat them in-flight with a graphene shell. These particles show surface plasmon resonance in the infrared region. Tuning of the plasma parameters allows control over the nanoparticle size and consequently over the absorption peak position. A simplified equivalent dielectric permittivity model shows excellent agreement with the experimental data. In addition, optical characterization at high temperatures confirms the stability of their optical properties, making this material attractive for a broad range of applications.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP409212	Silicon carbide		409-21-2	Price

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