Three-dimensional graphene network-based chemical sensors on paper substrate

Gwangseok Yang, Chongmin Lee, Jihyun Kim

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47 Citations (Scopus)

Abstract

We report on flexible three-dimensional (3-D) graphene network-based chemical sensors on paper substrate. Chemical-vapordeposited 3-D graphene foam network was transferred to a flexible, cheap, and environment-friendly paper substrate, followed by establishing two electrodes using Ag pastes. Conductivity of our 3-D graphene foam decreased with an increase in tensile strain. When either compressive (-0.5%) or tensile (+0.5%) strain was applied with the introduction of NO2 gas, our 3-D graphene foam-based chemical sensors on a paper substrate were very reliable, with sensitivity up to 13.5-16.7% (200 ppm) and 22.6-23.4% (800 ppm), respectively. After each experiment, our chemical sensors were refreshed by UV treatment in a vacuum condition, which allowed us to achieve the lowest baseline by accelerating the desorption process. Our flexible 3-D graphene network-based NO2 sensors on a paper substrate were very robust and sensitive under various tensile and compressive strain conditions.

Original languageEnglish
Pages (from-to)B160-B163
JournalJournal of the Electrochemical Society
Volume160
Issue number9
DOIs
Publication statusPublished - 2013 Aug 20

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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