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arXiv · 0710.2369

Graphene-on-Sapphire and Graphene-on-Glass: Raman Spectroscopy Study

I. Calizo·W. Bao·F. Miao·C. N. Lau·A. A. Balandin
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Abstract

The room-temperature Raman signatures from graphene layers on sapphire and glass substrates were compared with those from graphene on GaAs substrate and on the standard Si/SiO2 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 down-shifted by ~5 cm-1 for graphene-on-sapphire (GOS) and, in many cases, splits into doublets for graphene-on-glass (GOG) with the central frequency around 1580 cm-1. The obtained results are important for graphene characterization and its proposed graphene applications in electronic devices.

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I. Calizo, W. Bao, F. Miao, C. N. Lau, A. A. Balandin. 2007-10-12. Graphene-on-Sapphire and Graphene-on-Glass: Raman Spectroscopy Study. https://doi.org/10.1063/1.2805024

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