Diameter-dependent combination modes in individual single-walled carbon nanotubes

被引:20
|
作者
Zhao, JL
Jiang, CY
Fan, YW
Burghard, M
Basché, T
Mews, A [1 ]
机构
[1] Johannes Gutenberg Univ Mainz, Inst Phys Chem, D-55099 Mainz, Germany
[2] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
关键词
D O I
10.1021/nl025576w
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Resonant Raman spectra of individual single-walled carbon nanotubes (SWNTs) and thin SWNT bundles have been acquired by scanning confocal Raman microscopy. The position of several Raman modes was followed in dependence of the diameter-dependent radial-breathing modes (RBMs) and the excitation energy. For semiconducting nanotubes a systematic shift of one of the bands between 1650 and 2100 cm(-1) is observed with decreasing nanotube diameter and attributed to a combination mode of the G-band and the RBM.
引用
收藏
页码:823 / 826
页数:4
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