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arXiv 0710.2369cond-mat.mtrl-sci
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蓝宝石和玻璃上石墨烯的拉曼光谱研究

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

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

摘要:

将蓝宝石和玻璃衬底上的石墨烯层的室温拉曼特征与GaAs衬底和标准Si/SiO2衬底上的石墨烯的室温拉曼特征进行比较,作为参考。发现虽然Si/SiO2和GaAs上的石墨烯的G峰位于1580 cm-1处,但是对于蓝宝石上石墨烯(GOS),G峰下移约5 cm-1,并且在许多情况下,对于玻璃上石墨烯(GOG),G峰分裂成中心频率约为1580 cm-1的双峰。所得结果对石墨烯的表征及其在电子器件中的应用具有重要意义。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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