ArticleACS applied materials & interfaces2016
Catalyst Interface Engineering for Improved 2D Film Lift-Off and Transfer.
Article in ACS applied materials & interfaces, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed.
- Mapping nanoscale carrier confinement in polycrystalline graphene by terahertz spectroscopy.Scientific reports · 2024Article
- Article
- Wafer-Scale Integration of Graphene-Based Photonic Devices.ACS nano · 2021Article
- Crystal Orientation Dependent Oxidation Modes at the Buried Graphene-Cu Interface.Chemistry of materials : a publication of the American Chemical Society · 2020Article
- Quantitative optical mapping of two-dimensional materials.Scientific reports · 2018Article
- Contactless graphene conductivity mapping on a wide range of substrates with terahertz time-domain reflection spectroscopy.Scientific reports · 2017Article
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11 authors.
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Abstract
The mechanisms by which chemical vapor deposited (CVD) graphene and hexagonal boron nitride (h-BN) films can be released from a growth catalyst, such as widely used copper (Cu) foil, are systematically explored as a basis for an improved lift-off transfer. We show how intercalation processes allow the local Cu oxidation at the interface followed by selective oxide dissolution, which gently releases the 2D material (2DM) film. Interfacial composition change and selective dissolution can thereby be achieved in a single step or split into two individual process steps. We demonstrate that this method is not only highly versatile but also yields graphene and h-BN films of high quality regarding surface contamination, layer coherence, defects, and electronic properties, without requiring additional post-transfer annealing. We highlight how such transfers rely on targeted corrosion at the catalyst interface and discuss this in context of the wider CVD growth and 2DM transfer literature, thereby fostering an improved general understanding of widely used transfer processes, which is essential to numerous other applications.
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