Three-Dimensional Graphene Network-Based Chemical Sensors on Paper Substrate
- Authors
- Yang, Gwangseok; Lee, Chongmin; Kim, Jihyun
- Issue Date
- 2013
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.160, no.9, pp.B160 - B163
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 160
- Number
- 9
- Start Page
- B160
- End Page
- B163
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/106507
- DOI
- 10.1149/2.089309jes
- ISSN
- 0013-4651
- Abstract
- We report on flexible three-dimensional (3-D) graphene network-based chemical sensors on paper substrate. Chemical-vapor-deposited 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. (C) 2013 The Electrochemical Society. All rights reserved.
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