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Uniform graphene oxide films fabrication via spray-coating for sensing application |
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| Authors: | Nikolay S. Struchkov Evgeny V. Alexandrov Alexey V. Romashkin Gennady O. Silakov Maxim K. Rabchinskii |
| Affiliation: | 1. Center for Probe Microscopy and Nanotechnology, National Research University of Electronic Technology, Moscow, Russia;2. struchkov.nikolaj@gmail.com;4. Institute of Advanced Materials and Technologies, National Research University of Electronic Technology, Moscow, Russia;5. Laboratory of Physics of Cluster Structures, Ioffe Institute, St. Petersburg, Russia |
| Abstract: | AbstractA spray-coating technique for deposition of thin uniform graphene oxide films with a thickness of several tens of nanometers was developed. Among distinctive features of the technique is the low substrate heating temperature, which allows preserving most oxygen-containing functional groups and coat a wide range of substrates. The morphology of the spray-coated graphene oxide films with flakes of different lateral sizes was investigated. The local laser-induced photo-thermal reduction of thin graphene oxide thin films was demonstrated. The sensitivity of reduced graphene oxide to water vapor was also measured. Spray-coating and laser reduction techniques can be further applied for humidity sensor fabrication. |
| Keywords: | Graphene oxide laser reduction spray-coating |