Sagade, Abhay A.Aria, Adrianus IndratEdge, StevenMelgari, PaoloGieseking, BjoernBayer, Bernhard C.Meyer, Jannik C.Bird, DavidBrewer, PaulHofmann, Stephan2017-11-022017-11-022017-10-23Sagade AA, Aria AI, Edge S, Melgari P, Gieseking B, Bayer BC, Meyer JC, Bird D, Brewer P, Hofmann S, Graphene-based nanolaminates as ultra-high permeation barriers, npj 2D Materials and Applications, Vol. 1, Issue 35, 2017, Article number 352397-7132http://dx.doi.org/10.1038/s41699-017-0037-zhttps://dspace.lib.cranfield.ac.uk/handle/1826/12697Permeation 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 × 10−3 g/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.enAttribution 4.0 InternationalElectronic devicesMechanical and structural properties and devicesArticle