Graphene-based nanolaminates as ultra-high permeation barriers
- Author(s)
- Abhay A. Sagade, Adrianus I. Aria, Steven Edge, Paolo Melgari, Bjoern Gieseking, Bernhard C. Bayer, Jannik C. Meyer, David Bird, Paul Brewer, Stephan Hofmann
- Abstract
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 × 10−3 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.
- Organisation(s)
- Physics of Nanostructured Materials
- External organisation(s)
- University of Cambridge, Cranfield University, Centre for Process Innovation, National Physical Laboratory
- Journal
- npj 2D Materials and Applications
- Volume
- 1
- No. of pages
- 8
- ISSN
- 2397-7132
- DOI
- https://doi.org/10.1038/s41699-017-0037-z
- Publication date
- 10-2017
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103020 Surface physics, 103042 Electron microscopy
- Keywords
- ASJC Scopus subject areas
- Mechanics of Materials, Condensed Matter Physics, Mechanical Engineering, Chemistry(all), Materials Science(all)
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/graphenebased-nanolaminates-as-ultrahigh-permeation-barriers(e9946a85-e6cf-481b-bc60-cd6f435d9180).html