التفاصيل البيبلوغرافية
| العنوان: |
The effect of substrates on the Raman spectrum of graphene: Graphene- on-sapphire and graphene-on-glass. |
| المؤلفون: |
Calizo, Irene, Bao, Wenzhong, Miao, Feng, Lau, Chun Ning, Balandin, Alexander A. |
| المصدر: |
Applied Physics Letters; 11/12/2007, Vol. 91 Issue 20, p201904, 3p, 1 Color Photograph, 1 Chart, 2 Graphs |
| مصطلحات موضوعية: |
RAMAN effect, LIGHT scattering, PHYSICS, PHYSICAL sciences, NANOSTRUCTURED materials |
| مستخلص: |
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 ∼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. [ABSTRACT FROM AUTHOR] |
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