Thermal conductivity of suspended pristine graphene measured by Raman spectroscopy

By Jae-Ung Lee, D. Yoon, Hakseong Kim, Sang Wook Lee, H. Cheong. 2011

368 citations recorded by the source corpus.

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.

Subfields: Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/fa0fde28fce8d03f80a0966b4886a8c214dd5c67

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Materials Chemistry

1. Baowen Li
2. Xiaokun Gu
3. Xiaobo Yin
4. Yujie Wei
5. Ronggui Yang
6. Hui‐Ming Cheng
7. Feiyu Kang
8. Xiangfan Xu

Citations in the corpus

• Two-Dimensional Materials for Thermal Management Applications (2018, background): “properties, and an increased Umklapp scattering was discovered in thicker-layer graphene due to crystal anharmonicity; in contrast, in the supported case the extrinsic property is dominant, as the phonon-interface scattering leads to a suppression of phonon modes, especially the ZA modes, which woul”
• Thermal properties of graphene and nanostructured carbon materials. (2011, background): “, 82]. In order to compare directly independent measurements of thermal conductivity of graphene, I reproduce here the measured K as the function of temperature T from ref. (92), and add experimental [16, 17, 76, 93] and theoretical [62, 83] data from other works (See Figure 4b). In this plot, K is ”
• Graphene related materials for thermal management (2019, methodology): “Since the development of this technique by Balandin and co-workers [18], this non-contact technique has been used for measuring thermal conductivity of various graphene based films [19, 20, 26, 121, 298] and a wide range of other 2D materials [299–303].”
• Colloquium: Phononic thermal properties of two-dimensional materials (2017, background): “, 2016) and experimental measurements (Cai et al., 2010; Faugeras et al., 2010; Chen et al., 2011, 2012; Lee et al., 2011; Yan et al., 2014; Peimyoo et al., 2015; Zhang et al., 2015), when available, are presented.”
• Graphene and derivatives – Synthesis techniques, properties and their energy applications (2017, positive): “There was a speculation among the researchers that the thermal conductivity of graphene was overly estimates and lee et al. [128] have reported the conductivity as 1200-2700 W/mK and bi layer graphene as 600-500 W/mK [129].”