作者: M. E. Itkis , S. Niyogi , M. E. Meng , M. A. Hamon , H. Hu
DOI: 10.1021/NL0156639
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摘要: The electronic structure of single-walled carbon nanotubes (SWNTs) is investigated by transmission spectroscopy thin films. Hole-doping SWNTs, as a result purification, leads to free carrier absorption in the far-IR spectral range. Thermal cycling de-dopes transferring weight from interband transitions near-IR After are de-doped, diameter dependent peak apparent at ∼100 cm-1, which we ascribe curvature induced energy gap DOS nonarmchair metallic SWNTs.