Finding optimal HBr reduction of inkjet printed graphene oxide for flexible electronics

• The process of reduction of graphene oxide inkjet printouts by HBr is investigated.
• Impact of parameters of reduction on the chemical structure of printout is studied.
• Impact of parameters of reduction on the sheet resistance of printout is studied.
• Optimal parameters of reduction are proposed.

In this article we present the results of our investigations of reduction of graphene oxide overprints, deposited by ink-jet method, by hydrobromic acid. Our study presents impact of different parameters of reduction, such as a temperature and time of the process on the chemical composition and electrical conductivity of the resulting material – reduced graphene oxide. Our results show the outstanding potential of this method for use in the production of flexible and elastic electronics and indicate the optimal parameters of reduction, which allow producing the optimal product.