Publication details

Atmospheric dry hydrogen plasma reduction of inkjet-printed flexible graphene oxide electrodes

Authors

HOMOLA Tomáš POSPIŠIL Jan KRUMPOLEC Richard SOUČEK Pavel DZIK Petr WEITER Martin ČERNÁK Mirko

Year of publication 2018
Type Article in Periodical
Magazine / Source ChemSusChem
MU Faculty or unit

Faculty of Science

Citation
Web http://onlinelibrary.wiley.com/doi/10.1002/cssc.201702139/full
Doi http://dx.doi.org/10.1002/cssc.201702139
Keywords plasma treatment;hydrogen plasma;reduced graphene oxide (rGO);low-temperature processing;inkjet printing
Description This study concerns a low-temperature method for dry hydrogen plasma reduction of inkjet-printed flexible graphene oxide (GO) electrodes, an approach compatible with processes envisaged for the manufacture of flexible electronics. The processing of GO to reduced graphene oxide (rGO) was performed in 1–64 seconds, and sp2/sp2+sp3 carbon concentration increased from approximately 20% to 90%. Since the plasma reduction was associated with an etching effect, the optimal reduction time occurred between 8 and 16 seconds. The surface showed good mechanical stability when deposited on polyethylene terephthalate flexible foils and significantly lower sheet resistance after plasma reduction. This method for dry plasma reduction could be important for large-area hydrogenation and reduction of GO flexible surfaces, with present and potential applications in a wide variety of emerging technologies.
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