Graphene-based nanolaminates as ultra-high permeation barriers
NPJ 2D Materials and Applications
Nature Publishing Group
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Sagade, A., Aria, I., Edge, S., Melgari, P., Gieseking, B., Bayer, B., Meyer, J., et al. (2017). Graphene-based nanolaminates as ultra-high permeation barriers. NPJ 2D Materials and Applications, 1 (35)https://doi.org/10.1038/s41699-017-0037-z
Permeation barrier films are critical to a wide range of applications. In particular, for organic electronics and photovoltaics not only ultra-low permeation values are required but also optical transparency. A laminate structure thereby allows synergistic effects between different materials. Here, we report on a combination of chemical vapor deposition (CVD) and atomic layer deposition (ALD) to create in scalable fashion few-layer graphene/aluminium oxide-based nanolaminates. The resulting ~10 nm contiguous, flexible graphene-based films are >90% optically transparent and show water vapor transmission rates below 7 × 10¯³g/m²/day measured over areas of 5 × 5 cm². We deploy these films to provide effective encapsulation for organic light-emitting diodes (OLEDs) with measured half-life times of 880 h in ambient.
We acknowledge funding via EPSRC-Innovate UK Grant (EP/M507751/1). B.C.B acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreements 656214- 2DInterFOX. J.C.M. acknowledges support from the Austrian Science Fund (FWF, P25721-N20).
External DOI: https://doi.org/10.1038/s41699-017-0037-z
This record's URL: https://www.repository.cam.ac.uk/handle/1810/267941
Attribution 4.0 International, Attribution 4.0 International, Attribution 4.0 International, Attribution 4.0 International
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