2007/10/12 by I. Calizo, Irene Calizo, Wenzhong Bao +7 · 5 citations
Materials Science · Physics and Astronomy · #Diamond and Carbon-based Materials Research #Graphene research and applications #Quantum and electron transport phenomena #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.2805024
published as Appl. Phys. Lett. 91, 201904 (2007) · Accepted for publication in Applied Physics Letters, 9 pages, 3 figures
arxiv created 2007/10/12 · openalex publication_date 2007/11/12 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/06/26
The authors investigated the influence of substrates on Raman scattering spectrum from graphene. The room-temperature Raman signatures from graphene layers on GaAs, sapphire, and glass substrates were compared with those from graphene on the standard Si∕SiO2 (300nm) substrate, which served as a reference. It was found that while G peak of graphene on Si∕SiO2 and GaAs is positioned at 1580cm−1, it is downshifted by ∼5cm−1 for graphene on sapphire and, in some cases, splits into doublets for graphene on glass with the central frequency around 1580cm−1. The obtained results are important for nanometrology of graphene and graphene-based devices.