Work

Photo-induced doping and strain in exfoliated graphene

Year: 2013

Type: article

Abstract: The modification of single layer graphene due to intense, picoseconds near-infrared laser pulses is investigated. We monitor the stable changes introduced to graphene upon photoexcitation using Raman spectroscopy. We find that photoexcitation leads to both a local increase in hole doping and a reduction in compressive strain. Possible explanations for these effects, due to photo-induced oxygenation and photo-induced buckling of the graphene, are discussed.

Source: Applied Physics Letters

DOI: 10.1063/1.4823552

Authors: E. Alexeev, J. Moger, E. Hendry

Institution: University of Exeter

Language: English

Topic: Graphene research and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Engineering and Physical Sciences Research Council

Award: Non-equilibrium and relaxation phenomena in graphene-based devices