Print Email Facebook Twitter Conductive Screen Printing Inks by Gelation of Graphene Dispersions Title Conductive Screen Printing Inks by Gelation of Graphene Dispersions Author Arapov, K. Rubingh, E. Abbel, R.J. Laven, J. de With, G. Friedrich, H. Publication year 2016 Abstract This paper describes the gelation of highly concentrated graphene/polymer dispersions triggered by mild heating. The gel formation is only dependent on the concentration of graphene with 3.25 mg mL-1 as the minimum value for graphene network formation. The graphene gel is then utilized for the preparation of colloidally stable and highly concentrated (52 mg mL-1) graphene pastes that demonstrate excellent performance in screen printing down to lines of 40 μm in width. Printed patterns dried at 100 'C for only 5 min exhibit sheet resistances of 30 Ω □-1 at 25 μm thickness, thus, removing the need for long-time high temperature annealing, doping, or other treatments. Such a low drying temperature, high printing definition, and compatibility with industrially relevant plastic and paper substrates brings high-volume roll-to-roll application in printed flexible electronics within reach. Graphene screen printing using a paste obtained by gelation of highly concentrated graphene dispersions is demonstrated. The graphene paste shows a high printing definition, enabling printing of 40 μm wide lines on PET foil and paper substrates. A sheet resistance of 30 Ω □-1 at 25 μm is achieved after drying at 100 'C for 5 min, which brings high-speed, high-volume applications within reach. cop. 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Subject Nano TechnologyHOL - HolstTS - Technical SciencesMaterialsIndustrial InnovationFlexible electronicsScreen printingDrying temperatureGel formationGraphene dispersionsHigh-temperature annealing To reference this document use: http://resolver.tudelft.nl/uuid:5d79d07b-ecf7-42b9-a70f-4495ce39167d DOI https://doi.org/10.1002/adfm.201504030 TNO identifier 532865 Publisher Wiley-VCH Verlag ISSN 1616-301X Source Advanced Functional Materials, 26 (4), 586-593 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.