Enhanced sheet conductivity of Langmuir-Blodgett assembled graphene thin films by chemical doping

Aleksandar Matković, Ivana Milošević, Marijana Milićević, Tijana Tomašević-Ilić, Jelena Pešić, Milenko Musić, Marko Spasenović, Djordje Jovanović, Borislav Vasić, Christopher Deeks, Radmila Panajotović, Milivoj R. Belić, Radoš Gajić

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Wedemonstrate a facile fabrication technique for highly conductive and transparent thin graphene films. Sheet conductivity of Langmuir-Blodgett assembled multi-layer graphene films is enhanced through doping with nitric acid, leading to a fivefold improvement while retaining the same transparency as un-doped films. Sheet resistivity of such chemically improved films reaches 10 kΩ/□, with optical transmittance 78% in the visible. When the films are encapsulated, the enhanced sheet conductivity effect is stable in time. In addition, stacking of multiple layers, as well as the dependence of the sheet resistivity upon axial strain have been investigated.

Original languageEnglish
Article number015002
Journal2D Materials
Volume3
Issue number1
DOIs
Publication statusPublished - 18 Jan 2016
Externally publishedYes

Keywords

  • Enhanced conductivity
  • Graphene
  • Langmuir-Blodgett assembly
  • Nitric acid doping

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