Room-Temperature Transport Properties of Graphene with Defects Derived from Oxo-Graphene

Zhenping Wang, Qirong Yao, Siegfried Eigler*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)

Abstract

In recent years, graphene oxide has been considered as a soluble precursor of graphene for electronic applications. However, the performance lags behind that of graphene due to lattice defects. Here, the relation between the density of defects in the range of 0.2 % and 1.5 % and the transport properties is quantitatively studied. Therefore, the related flakes of monolayers of graphene were prepared from oxo-functionalized graphene (oxo-G). The morphologic structure of oxo-G was imaged by atomic force microscopy (AFM) and scanning tunneling microscopy (STM). Field-effect mobility values were determined to range between 0.3 cm2 V−1 s−1 and 33.2 cm2 V−1 s−1, which were inversely proportional to the density of defects. These results provide the first quantitative description of the density of defects and transport properties, which plays an important role for potential applications.

Original languageEnglish
Pages (from-to)6484-6489
Number of pages6
JournalChemistry - A European Journal
Volume26
Issue number29
DOIs
Publication statusPublished - 20 May 2020

Keywords

  • UT-Hybrid-D
  • electronic transport
  • graphene
  • graphene oxide
  • defects

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