de.mpg.escidoc.pubman.appbase.FacesBean
Deutsch
 
Hilfe Wegweiser Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Formation Mechanism, Growth Kinetics, and Stability Limits of Graphene Adlayers in Metal‐Catalyzed CVD Growth

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons37960

Wang,  Zhu-Jun
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons22071

Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons22243

Willinger,  Marc Georg
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Wang, Z.-J., Ding, F., Eres, G., Antonietti, M., Schlögl, R., & Willinger, M. G. (2018). Formation Mechanism, Growth Kinetics, and Stability Limits of Graphene Adlayers in Metal‐Catalyzed CVD Growth. Advanced Materials Interfaces, 1800255. doi:10.1002/admi.201800255.


Zitierlink: http://hdl.handle.net/21.11116/0000-0001-6A20-4
Zusammenfassung
A new mechanism by which catalytic chemical vapor deposition of graphene spontaneously terminates at a single layer on Pt foils is discussed. This self‐limited growth regime is identified by direct imaging of adlayer graphene evolution using in‐situ environmental scanning electron microscopy. Two fundamentally different mechanisms for adlayer nucleation are revealed. Besides primary nucleation, which is the standard nucleation that occurs only at the onset of growth, a secondary nucleation of adlayers is observed near full coverage of the substrate. Direct observation reveals layer‐dependent growth kinetics and the establishment of a dynamic equilibrium between the forward reaction of carbon incorporation and the reverse reaction of graphene etching. Increasing coverage of the active catalyst gives rise to a spontaneous reversal of adlayer evolution from growth to etching. The growth reversal has important practical benefits. It creates a self‐limited growth regime in which all adlayer graphene is removed and it enables large‐scale production of 100% single‐layer graphene.