Superior thermal conductivity of single-layer graphene
Superior thermal conductivity of single-layer graphene
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DOI：
10.1021/nl0731872
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发表时间：
2008-03-01
期刊：
影响因子：
10.8
通讯作者：
Lau, Chun Ning
中科院分区：
文献类型：
--
作者：
Balandin, Alexander A.;Ghosh, Suchismita;Lau, Chun Ning
我们报道了一种悬浮单层石墨烯的导热系数的测量。根据单层石墨烯的拉曼G峰频率与激发激光功率的关系和独立测量的G峰温度系数，得到了单层石墨烯在(4.84+/-0.44)×10(3)~(5.30+/-0.48)×10(3)W/mK范围内的室温导热系数。极高的导热系数表明石墨烯的导热性能优于碳纳米管。石墨烯优异的导热性能有利于其在电子领域的应用，并使其成为一种优良的热管理材料。
We report the measurement of the thermal conductivity of a suspended single-layer graphene. The room temperature values of the thermal conductivity in the range similar to(4.84 +/- 0.44) x 10(3) to (5.30 +/- 0.48) x 10(3) W/mK were extracted for a single-layer graphene from the dependence of the Raman G peak frequency on the excitation laser power and independently measured G peak temperature coefficient. The extremely high value of the thermal conductivity suggests that graphene can outperform carbon nanotubes in heat conduction. The superb thermal conduction property of graphene is beneficial for the proposed electronic applications and establishes graphene as an excellent material for thermal management.