Graphene-based nanolaminates as ultra-high permeation barriers

Autor(en)

Abhay A. Sagade, Adrianus I. Aria, Steven Edge, Paolo Melgari, Bjoern Gieseking, Bernhard C. Bayer, Jannik C. Meyer, David Bird, Paul Brewer, Stephan Hofmann

Abstrakt

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(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

University of Cambridge, Cranfield University, Centre for Process Innovation, National Physical Laboratory

Journal

npj 2D Materials and Applications

Band

1

Anzahl der Seiten

8

ISSN

2397-7132

DOI

https://doi.org/10.1038/s41699-017-0037-z

Publikationsdatum

10-2017

Peer-reviewed

Ja

ÖFOS 2012

103020 Oberflächenphysik, 103042 Elektronenmikroskopie

Schlagwörter

ASJC Scopus Sachgebiete

Mechanics of Materials, Condensed Matter Physics, Mechanical Engineering, Allgemeine Chemie, Allgemeine Materialwissenschaften

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/e9946a85-e6cf-481b-bc60-cd6f435d9180