Dual Raman features of double coaxial carbon nanotubes with N-doped and B-doped multiwalls.
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.
Yang
Quan-Hong
QH
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
Hou
Peng-Xiang
PX
Unno
Masashi
M
Yamauchi
Seigo
S
Saito
Riichiro
R
Kyotani
Takashi
T
D004563:Electrochemistry / Q000379:methods*; D008422:Materials Testing; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000032:analysis / Q000737:chemistry*; D012666:Semiconductors; D013059:Spectrum Analysis, Raman / Q000379:methods*
D037742:Nanotubes, Carbon