Journal
ADVANCED ENGINEERING MATERIALS
Volume 18, Issue 7, Pages 1234-1239Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.201500646
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Funding
- European Union [264710, 604391]
- Directorate-General for Science, Research and Development of the European Commission
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This paper describes a combination of photonic annealing and compression rolling to improve the conductive properties of printed binder-based graphene inks. High-density light pulses result in temperatures up to 500 degrees C that along with a decrease of resistivity lead to layer expansion. The structural integrity of the printed layers is restored using compression rolling resulting in smooth, dense, and highly conductive graphene films. The layers exhibit a sheet resistance of less than 1.4(-1) normalized to 25 mu m thickness. The proposed approach can potentially be used in a roll-to-roll manner with common substrates, such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and paper, paving thereby the road toward high-volume graphene-printed electronics.
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