Characterization of the cleaning process on a transferred graphene

Li Wei Huang, Cheng Kai Chang, Fan Ching Chien, Kuei Hsien Chen, Peilin Chen, Fu Rong Chen, Chia Seng Chang

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Intrinsic graphene possesses many outstanding physical and chemical properties, but their full explorations are often hindered by the effects of substrate and/or contamination. The authors employ the ultrahigh vacuum transmission electron microscopy equipped with a residual gas analyzer to in-situ characterize an effective decontamination process on a suspended graphene. Raman spectroscopic spectra further verify the cleanness of the resultant graphene membrane. The authors also present two contrasting growth morphologies of copper nanoparticles obtained on both clean and unclean graphene surfaces and show that the intrinsic growth dynamics can only manifest on the surface without contaminations.

Original languageEnglish
Article number050601
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Issue number5
StatePublished - Sep 2014


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