Abstract

The authors reported on investigation of the thermal conductivity of graphene suspended across trenches in Si∕SiO2 wafer. The measurements were performed using a noncontact technique based on micro-Raman spectroscopy. The amount of power dissipated in graphene and corresponding temperature rise were determined from the spectral position and integrated intensity of graphene’s G mode. The extremely high thermal conductivity in the range of ∼3080–5150W∕mK and phonon mean free path of ∼775nm near room temperature were extracted for a set of graphene flakes. The obtained results suggest graphene’s applications as thermal management material in future nanoelectronic circuits.

Keywords

GrapheneThermal conductivityMaterials scienceRaman spectroscopyPhononWaferGraphene nanoribbonsOptoelectronicsNanotechnologyThermalComposite materialCondensed matter physicsOpticsPhysics

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Publication Info

Year
2008
Type
article
Volume
92
Issue
15
Citations
2041
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Subhajit Ghosh, Irene Calizo, Desalegne Teweldebrhan et al. (2008). Extremely high thermal conductivity of graphene: Prospects for thermal management applications in nanoelectronic circuits. Applied Physics Letters , 92 (15) . https://doi.org/10.1063/1.2907977

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DOI
10.1063/1.2907977