Highly Conductive Semitransparent Graphene Circuits Screen‐Printed from Water‐Based Graphene Oxide Ink

• DOI: 10.1002/admt.201700011
• Publication Date: 2017-05-18T06:22:39Z
• Authors: Marc H. Overgaard; Martin Kühnel; Rasmus Hvidsten; Søren V. Petersen; Tom Vosch; Kasper Nørgaard; Bo W. Laursen
• Keywords: Printed Electronics; Conductive ink; Screen printing; Flexible Electronics

The use of graphene materials as conductive inks for flexible and transparent electronics is promising, but challenged by the need stabilizers, specialized organic solvents, and/or high temperature annealing, severely limiting performance or compatibility with substrates printing techniques. Here, development a scalable water‐based oxide ink reported that can be screen‐printed on plastic subsequently reduced using 1:1 mixture trifluoroacetic acid hydroiodic acid, thereby creating an electric circuit. prints exhibit low sheet resistance 327 Ω sq −1 thin semitransparent layers 37% transmittance. This methodology postprinting chemical reduction outperforms eliminating such step, which incompatible substrates. strategy relies cost, industrially compatible chemicals scaled up cost manufacture roll‐to‐roll printed electronics.