Carrier Density and Effective Mass Calculations for Carbon Nanotubes

The electronic structure of carbon nanotubes has been examined and recalculated using previous theoretical and experimental results. The effective mass and intrinsic carrier concentration have been calculated for different carbon nanotubes. These results show how different diameters and wrapping angles of carbon nanotubes can change their electronic properties. Since the intrinsic carrier concentration of a carbon nanotube can be adjusted, it allows die designer to use the same material (carbon nanotube) for a wide range of applications only by varying the chiral vector (n,m). The calculations performed in this work set an upper limit for a wide range of applications, including carbon nanotube interconnects and carbon nanotube field effect transistors.