Excellent optoelectrical properties of graphene oxide thin films deposited on a flexible substrate by Langmuir-Blodgett assembly

Xiuyi Lin, Jingjing Jia, Nariman Yousefi, Xi Shen, Jang Kyo Kim

Research output: Journal article publicationJournal articleAcademic researchpeer-review

44 Citations (Scopus)

Abstract

Transparent conductive films (TCFs) composed of ultra-large graphene oxide (GO) sheets are produced on a flexible poly(ethylene terephthalate) (PET) substrate using the Langmuir-Blodgett (L-B) assembly. The GO films are reduced using hydriodic (HI) acid followed by chemical doping treatments. The TCFs deliver excellent optoelectrical properties with a remarkable sheet resistance 1100 Ω sq-1 at a transmittance of 91%, which is considered among the best. The plasma-treated PET substrate plays an important role in determining the chemistry and surface morphology of GO films: a combination of strong covalent bonds and π-π interactions between the GO and PET is revealed. The L-B assembly technique is suitable for the fabrication of flexible TCFs of optoelectronic devices on a large scale.

Original languageEnglish
Pages (from-to)6869-6877
Number of pages9
JournalJournal of Materials Chemistry C
Volume1
Issue number41
DOIs
Publication statusPublished - 7 Nov 2013
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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