Temperature dependence of the Raman spectra of graphene and graphene multilayers

被引：1083

作者：

Calizo, I.

Balandin, A. A. ^{[1
]}

Bao, W.

Miao, F.

Lau, C. N.

机构：

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

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

来源：

NANO LETTERS | 2007年 / 7卷 / 09期

关键词：

D O I：

10.1021/nl071033g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We investigated the temperature dependence of the frequency of G peak in the Raman spectra of graphene on Si/SiO2 substrates. The microRaman spectroscopy was carried out under the 488 nm laser excitation over the temperature range from -190 to +100 degrees C. The extracted value of the temperature coefficient of G mode of graphene is X = -0.016 cm(-1)/degrees C for the single layer and X = -0.015 cm(-1)/degrees C for the bilayer. The obtained results shed light on the anharmonic properties of graphene.

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页码：2645 / 2649

页数：5

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