Dual Raman features of double coaxial carbon nanotubes with N-doped and B-doped multiwalls
Dual Raman features of double coaxial carbon nanotubes with N-doped and B-doped multiwalls
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DOI：
10.1021/nl051779j
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发表时间：
2005-12-01
期刊：
影响因子：
10.8
通讯作者：
Kyotani, T
中科院分区：
文献类型：
--
作者：
Yang, QH;Hou, PX;Kyotani, T
氮（N）掺杂和硼（B）掺杂的双同轴碳纳米管多壁具有复合拉曼特征，不仅来自外部N掺杂层，还来自内部B掺杂层。N和B掺杂均导致构成纳米管壁的sp（2）碳的特征D带和G带的显著位移，但方式不同。无论N或B掺杂与否，碳纳米管的G带的下移与电阻率的降低有关。
Double coaxial carbon nanotubes with nitrogen (N)-doped and boron (B)-doped multiwalls possess composite Raman characteristics, originating not only from the outer N-doped but also from inner B-doped layers. Both N and B dopings result in substantial shifts of the characteristic D band and G band of sp(2) carbon constituting nanotube walls but in different ways. The downshift of the G band is correlated with the decreases of electrical resistivity of carbon nanotubes regardless of N or B doping.