Temperature- and thickness-dependent electrical conductivity of few-layer graphene and graphene nanosheets

Xiao Yong Fang*, Xiao Xia Yu, Hong Mei Zheng, Hai Bo Jin, Li Wang, Mao Sheng Cao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

307 Citations (Scopus)

Abstract

Abstract 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.

Original languageEnglish
Article number23313
Pages (from-to)2245-2251
Number of pages7
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume379
Issue number37
DOIs
Publication statusPublished - 7 Aug 2015

Keywords

  • Electrical conductivity
  • Electron mobility
  • Few-layer graphene
  • Graphene nanosheets

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