Advanced

Oxygen Intercalation under Graphene on Ir(111): Energetics, Kinetics, and the Role of Graphene Edges.

Grånäs, Elin LU ; Knudsen, Jan LU ; Schröder, Ulrike A; Gerber, Timm; Busse, Carsten; Arman, Mohammad A; Schulte, Karina LU ; Andersen, Jesper N LU and Michely, Thomas (2012) In ACS Nano
Abstract
Using X-ray photoemission spectroscopy (XPS) and scanning tunneling microscopy (STM) we resolve the temperature-, time-, and flake size-dependent intercalation phases of oxygen underneath graphene on Ir(111) formed upon exposure to molecular oxygen. Through the applied pressure of molecular oxygen the atomic oxygen created on the bare Ir terraces is driven underneath graphene flakes. The importance of substrate steps and of the unbinding of graphene flake edges from the substrate for the intercalation is identified. With the use of CO titration to selectively remove oxygen from the bare Ir terraces the energetics of intercalation is uncovered. Cluster decoration techniques are used as an efficient tool to visualize intercalation processes... (More)
Using X-ray photoemission spectroscopy (XPS) and scanning tunneling microscopy (STM) we resolve the temperature-, time-, and flake size-dependent intercalation phases of oxygen underneath graphene on Ir(111) formed upon exposure to molecular oxygen. Through the applied pressure of molecular oxygen the atomic oxygen created on the bare Ir terraces is driven underneath graphene flakes. The importance of substrate steps and of the unbinding of graphene flake edges from the substrate for the intercalation is identified. With the use of CO titration to selectively remove oxygen from the bare Ir terraces the energetics of intercalation is uncovered. Cluster decoration techniques are used as an efficient tool to visualize intercalation processes in real space. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS Nano
publisher
The American Chemical Society
external identifiers
  • wos:000311521700064
  • pmid:23039853
  • scopus:84870438850
ISSN
1936-086X
DOI
10.1021/nn303548z
language
English
LU publication?
yes
id
616fbd63-8336-4e5f-ae2c-5faca6c6d9a5 (old id 3161054)
date added to LUP
2012-11-13 10:17:18
date last changed
2017-10-22 03:21:38
@article{616fbd63-8336-4e5f-ae2c-5faca6c6d9a5,
  abstract     = {Using X-ray photoemission spectroscopy (XPS) and scanning tunneling microscopy (STM) we resolve the temperature-, time-, and flake size-dependent intercalation phases of oxygen underneath graphene on Ir(111) formed upon exposure to molecular oxygen. Through the applied pressure of molecular oxygen the atomic oxygen created on the bare Ir terraces is driven underneath graphene flakes. The importance of substrate steps and of the unbinding of graphene flake edges from the substrate for the intercalation is identified. With the use of CO titration to selectively remove oxygen from the bare Ir terraces the energetics of intercalation is uncovered. Cluster decoration techniques are used as an efficient tool to visualize intercalation processes in real space.},
  author       = {Grånäs, Elin and Knudsen, Jan and Schröder, Ulrike A and Gerber, Timm and Busse, Carsten and Arman, Mohammad A and Schulte, Karina and Andersen, Jesper N and Michely, Thomas},
  issn         = {1936-086X},
  language     = {eng},
  publisher    = {The American Chemical Society},
  series       = {ACS Nano},
  title        = {Oxygen Intercalation under Graphene on Ir(111): Energetics, Kinetics, and the Role of Graphene Edges.},
  url          = {http://dx.doi.org/10.1021/nn303548z},
  year         = {2012},
}