Temperature- and thickness-dependent electrical conductivity of few-layer graphene and graphene nanosheets
Temperature- and thickness-dependent electrical conductivity of few-layer graphene and graphene nanosheets
复制标题
少层石墨烯和石墨烯纳米片的温度和厚度依赖性电导率
DOI：
10.1016/j.physleta.2015.06.063
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发表时间：
2015-10-02
影响因子：
2.6
通讯作者：
Cao, Mao-Sheng
中科院分区：
文献类型：
--
作者：
Fang, Xiao-Yong;Yu, Xiao-Xia;Cao, Mao-Sheng
基于玻尔兹曼输运方程和二维电子气理论，建立了多层石墨烯电导率的计算模型。数值模拟表明，几层石墨烯和石墨烯纳米片的电导率随着厚度的增加而降低。对于微米范围的厚度，还原速率减小，此后保持不变。此外，电导率随温度的升高而增加，且随温度的升高而增加的速率减小。厚度越大，电导率的温度效应越明显。这种影响也随着温度的升高而增加。(C)2015爱思唯尔B.V.保留所有权利。
We established a calculation model of the conductivity of multilayer graphene based on Boltzmann transport equation and 2D electron gas theory. Numerical simulations show that the conductivities of few-layer graphene and graphene nanosheets are reduced when thickness is increased. The reduction rate decreases for micron-range thicknesses and remains constant thereafter. Moreover, the conductivity increases with the increase in temperature, in which the increase rate declines as temperature increases. Higher thickness exhibits a more obvious temperature effect on conductivity. Such effect also increases with the increase in temperature. (C) 2015 Elsevier B.V. All rights reserved.