Optical evidence of Stark effect in single-walled carbon nanotube transistors

The effect of an externally applied electric field in single-walled carbon nanotubes was studied using a thin-film transistor configuration. Under the electric field, the optical spectra displayed redshifts and broadening. These phenomena present evidence of the Stark effect in single-walled carbon nanotubes. The finding of the Stark effect suggests the potential use of carbon nanotubes in electro-optic devices for optical communication. (c) 2006 American Institute of Physics.