Effects of controllable biaxial strain on the Raman spectra of monolayer graphene prepared by chemical vapor deposition

Wenjing Jie, Yeung Yu Hui, Yang Zhang, Shu Ping Lau, Jianhua Hao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)

Abstract

Controllable biaxial strain is delivered to monolayer graphene prepared by chemical vapor deposition via applying an electric field to the underlying piezoelectric [Pb(Mg1/3Nb2/3)O3]0.7-[PbTiO3]0.3substrate. The effects of tunable strain on the Raman spectra of graphene are investigated in reversible and real-time manners. Such strain can result in a blue shift in 2D band of graphene. The calculations based on the Grüneisen parameter identify the actual biaxial strain to graphene, leading to a continuous 2D band shift, which is detected during the retention of bias voltage. The physical mechanism behind this unique Raman behavior is discussed.
Original languageEnglish
Article number223112
JournalApplied Physics Letters
Volume102
Issue number22
DOIs
Publication statusPublished - 3 Jun 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this