CUED Publications database

Graphene-based nanolaminates as ultra-high permeation barriers

sagade, AA and Aria, AI and Edge, S and Melgari, P and Gieseking, B and Bayer, BC and Meyer, JC and Bird, D and Brewer, P and Hofmann, S (2017) Graphene-based nanolaminates as ultra-high permeation barriers. NPJ 2D Materials and Applications, 1.

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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.

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 31 Aug 2017 01:19
Last Modified: 22 Apr 2021 05:29
DOI: 10.1038/s41699-017-0037-z