Electronic and photonic properties of doped carbon nanotubes.

The idea of doping carbon nanotubes is attractive since it provides various possibilities for controlling the physical properties of carbon nanotubes. In this review, we have summarized recent progress on the experimental and theoretical studies of carbon nanotubes doped with nonmetals, alkali metals, transition metals, and clusters. The doping effects on the electronic, magnetic, transport, and optical properties of carbon nanotubes are reviewed. The related applications of carbon nanotubes in nanoelectronics, battery, field emission, spintronics, nonlinear optics, and chemical sensors are discussed.