Work function engineering of single layer graphene by irradiation-induced defects

Jong Hun Kim, Jin Heui Hwang, Joonki Suh, Sefaattin Tongay, Sangku Kwon, C. C. Hwang, Junqiao Wu, Jeong Young Park

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

Abstract

We report the tuning of electrical properties of single layer graphene by α-beam irradiation. As the defect density increases upon irradiation, the surface potential of the graphene changes, as determined by Kelvin probe force microscopy and Raman spectroscopy studies. X-ray photoelectron spectroscopy studies indicate that the formation of C/O bonding is promoted as the dose of irradiation increases when at atmospheric conditions. Our results show that the surface potential of the graphene can be engineered by introducing atomic-scale defects via irradiation with high-energy particles.

Original languageEnglish (US)
Article number171604
JournalApplied Physics Letters
Volume103
Issue number17
DOIs
StatePublished - Oct 21 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Work function engineering of single layer graphene by irradiation-induced defects'. Together they form a unique fingerprint.

Cite this