Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf
1 PublikationIn Situ Characterization of Alloy Catalysts for Low-Temperature Graphene Growth
Weatherup, R. S.; Bayer, B. C.; Blume, R.; Ducati, C.; Baehtz, C.; Schlögl, R.; Hofmann, S.
Abstract
Low-temperature (∼450 °C), scalable chemical vapor deposition of predominantly monolayer (74%) graphene films with an average D/G peak ratio of 0.24 and domain sizes in excess of 220 μm2 is demonstrated via the design of alloy catalysts. The admixture of Au to polycrystalline Ni allows a controlled decrease in graphene nucleation density, highlighting the role of step edges. In situ, time-, and depthresolved X-ray photoelectron spectroscopy and X-ray diffraction reveal the role of subsurface C species and allow a coherent model for graphene formation to be devised.
Keywords: Graphene; chemical vapor deposition (CVD); alloy catalyst; in situ metrology; XPS; XRD
Beteiligte Forschungsanlagen
- Rossendorf Beamline an der ESRF DOI: 10.1107/S1600577520014265
Verknüpfte Publikationen
- DOI: 10.1107/S1600577520014265 is cited by this (Id 16363) publication
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Nano Letters 11(2011), 4154-4160
DOI: 10.1021/nl202036y
Cited 262 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-16363