The effect of substrates on the Raman spectrum of graphene: Graphene-on-sapphire and graphene-on-glass

被引：184

作者：

Calizo, Irene

Bao, Wenzhong

Miao, Feng

Lau, Chun Ning

Balandin, Alexander A. ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Elect Engn, Nano Device Lab, Riverside, CA 92521 USA

[2] Univ Calif Riverside, Dept Phys & Astromy, Riverside, CA 92521 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 20期

关键词：

D O I：

10.1063/1.2805024

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 (300 nm) substrate, which served as a reference. It was found that while G peak of graphene on Si/SiO2 and GaAs is positioned at 1580 cm(-1), it is downshifted by similar to 5 cm(-1) for graphene on sapphire and, in some cases, splits into doublets for graphene on glass with the central frequency around 1580 cm(-1). The obtained results are important for nanometrology of graphene and graphene-based devices. (c) 2007 American Institute of Physics.

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