Electronic and optical properties of alkali metal doped carbon nanotubes

Abstract

Abstract Macroscopic samples of single wall carbon nanotubes (SWNT) are a nano meshed composite of interacting semiconducting and metallic nanotubes. They are a showcase example to study molecular semiconductor/metal interfaces, which are of fundamental relevance for molecular electronics and device architecture. Potassium intercalation of mixed bundles of SWNT offers facile means to tickle the delicate balance of internal charge transfer and Fermi level pinning in these systems. Moreover, the effective dimensionality of the metallic phase can be tailored from a Tomonaga–Luttinger liquid in one‐dimensional channels to a bulk Fermi liquid.