title: Mechanical exfoliation of epitaxial graphene on Ir(111) enabled by Br2 intercalation.
abstract: We show here that Br(2) intercalation is an efficient method to enable exfoliation of epitaxial graphene on metals by adhesive tape. We exemplify this method for high-quality graphene of macroscopic extension on Ir(111). The sample quality and the transfer process are monitored using low-energy electron diffraction (LEED), scanning tunneling microscopy (STM), scanning electron microscopy (SEM) and Raman spectroscopy. The developed process provides an opportunity for preparing graphene of strictly monatomic thickness and well-defined orientation including the transfer to poly(ethylene terephthalate) (PET) foil.
authors: II. Physikalisches Institut, Universität zu Köln, Köln, Germany. herbig@ph2.uni-koeln.de
authors: Charlotte
authors: C
authors: Herbig
authors: Markus
authors: M
authors: Kaiser
authors: Nedjma
authors: N
authors: Bendiab
authors: Stefan
authors: S
authors: Schumacher
authors: Daniel F
authors: DF
authors: Förster
authors: Johann
authors: J
authors: Coraux
authors: Klaus
authors: K
authors: Meerholz
authors: Thomas
authors: T
authors: Michely
authors: Carsten
authors: C
authors: Busse