Year: 2011
Type: article
Abstract: The thermal conductivity of suspended single-layer graphene was measured as a function of temperature using Raman scattering spectroscopy on clean samples prepared directly on a prepatterned substrate by mechanical exfoliation without chemical treatments. The temperature at the laser spot was monitored by the frequency of the Raman 2$D$ band of the Raman scattering spectrum, and the thermal conductivity was deduced by analyzing heat diffusion equations assuming that the substrate is a heat sink at ambient temperature. The obtained thermal conductivity values range from $~$1800 W m${}^{\ensuremath{-}1}$K${}^{\ensuremath{-}1}$ near 325 K to $~$710 W m${}^{\ensuremath{-}1}$K${}^{\ensuremath{-}1}$ at 500 K.
Source: Physical Review B
Institutions: Sogang University, Konkuk University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1984477246