title: Self-Activated Transparent All-Graphene Gas Sensor with Endurance to Humidity and Mechanical Bending.
abstract: Graphene is considered as one of leading candidates for gas sensor applications in the Internet of Things owing to its unique properties such as high sensitivity to gas adsorption, transparency, and flexibility. We present self-activated operation of all graphene gas sensors with high transparency and flexibility. The all-graphene gas sensors which consist of graphene for both sensor electrodes and active sensing area exhibit highly sensitive, selective, and reversible responses to NO2 without external heating. The sensors show reliable operation under high humidity conditions and bending strain. In addition to these remarkable device performances, the significantly facile fabrication process enlarges the potential of the all-graphene gas sensors for use in the Internet of Things and wearable electronics.
authors: Department of Materials Science and Engineering, Seoul National University , Seoul 151-744, Republic of Korea.
authors: Yeon Hoo
authors: YH
authors: Kim
authors: Department of Chemistry, Seoul National University , Seoul 151-742, Republic of Korea.
authors: Sang Jin
authors: SJ
authors: Kim
authors: Department of Chemistry, Seoul National University , Seoul 151-742, Republic of Korea.|School of Physics and Astronomy, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom.
authors: Yong-Jin
authors: YJ
authors: Kim
authors: Department of Materials Science and Engineering, Seoul National University , Seoul 151-744, Republic of Korea.
authors: Yeong-Seok
authors: YS
authors: Shim
authors: School of Chemical Engineering and Materials Science, Chung-Ang University , Seoul 156-756, Republic of Korea.
authors: Soo Young
authors: SY
authors: Kim
authors: Department of Chemistry, Seoul National University , Seoul 151-742, Republic of Korea.
authors: Byung Hee
authors: BH
authors: Hong
authors: Department of Materials Science and Engineering, Seoul National University , Seoul 151-744, Republic of Korea.
authors: Ho Won
authors: HW
authors: Jang
mesh_terms: D004548:Elasticity; D055664:Electrochemical Techniques / Q000295:instrumentation*; D004566:Electrodes; D004867:Equipment Design; D006108:Graphite / Q000737:chemistry*; D006813:Humidity; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D009585:Nitrogen Dioxide / Q000032:analysis*
chemical_list: D006108:Graphite; D009585:Nitrogen Dioxide
keywords: Internet of Things; gas sensors; graphene; self-activation; wearable devices