A simple method to recover the graphene-based chemi-resistor signal
- Author(s)
- F. Fedi, F. Ricciardella, M. L. Miglietta, T. Polichetti, E. Massera, G. Di Francia
- Abstract
We present the development of a simple and fast method for restoring exhaust graphene-based chemi-resistors used for NO
2 detection. Repeatedly exposing the devices to gases or to air for more than 2 days, an overall worsening of the sensing signal is observed; we hypothesized that the poisoning effect in both cases is caused by the exposure to NO
2. Starting from this hypothesis and from the observation that NO
2 is soluble in water, we performed a recovery method consisting in the dipping of exhaust devices into ultrapure water at 100 °C for 60 s. The device performances are compared with those obtained after the restoration is achieved using the typical annealing under vacuum method.
- Organisation(s)
- Electronic Properties of Materials
- External organisation(s)
- Institute of Genetics and Biophysics "Adriano Buzzati-Traverso", CNR, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Università degli studi di Napoli Federico II
- Journal
- Journal of sensors and sensor systems
- Volume
- 3
- Pages
- 241-244
- No. of pages
- 4
- ISSN
- 2194-8771
- DOI
- https://doi.org/10.5194/jsss-3-241-2014
- Publication date
- 10-2014
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103020 Surface physics, 103018 Materials physics
- ASJC Scopus subject areas
- Instrumentation, Electrical and Electronic Engineering
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/807634f8-e77b-4993-8b1a-977c4a5af6b2