Large-area graphene-based thin films using rapid reduction of graphene-oxide

Gautam Naik, Adarsh Kaniyoor, Sundara Ramaprabhu, Sridhar Krishnaswamy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the present study, we propose a method to fabricate large-area graphene-based thin films using rapid low-temperature reduction of graphene-oxide. Large area (∼17.5 sq.cm.) graphene oxide (GO) thin films are fabricated by vacuum filtration of GO solution synthesized by the modified Hummers' method. The graphene-oxide thin films are reduced in a MTS testing machine equipped with a controlled atmosphere furnace. Reduction is carried out at temperatures from 200°C to 400°C, for different time durations. The fabricated reduced GO thin films are characterized using powder x-ray diffraction and energy-dispersive x-ray spectroscopy. The reduced graphene oxide thin films show decreased interlayer spacing and higher carbon-to-oxygen ratio. Conductivity measurements show an increase in conductivity by over five orders of magnitude compared to GO. This method offers a scalable new way of fabricating conductive large-area graphene-based thin films.

Original languageEnglish (US)
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013
Volume8692
DOIs
StatePublished - Jun 12 2013
Event2013 SPIE Conference on Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013 - San Diego, CA, United States
Duration: Mar 10 2013Mar 14 2013

Other

Other2013 SPIE Conference on Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013
CountryUnited States
CitySan Diego, CA
Period3/10/133/14/13

Keywords

  • Graphene
  • Thermal reduction
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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