Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 4, Pages 2189-2194Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am5084122
Keywords
graphene; paper; gas sensors; graphene transfer; graphitic sensors
Funding
- DST through TUE project for nanoscience and technology
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Graphene layers have been transferred directly on to paper without any intermediate layers to yield G-paper. Resistive gas sensors have been fabricated using strips of G-paper. These sensors achieved a remarkable lower limit of detection of similar to 300 parts per trillion (ppt) for NO2, which is comparable to or better than those from other paper-based sensors. Ultraviolet exposure was found to dramatically reduce the recovery time and improve response times. G-paper sensors are also found to be robust against minor strain, which was also found to increase sensitivity. G-paper is expected to enable a simple and inexpensive low-cost flexible graphene platform
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