Polymer electrolyte-gated carbon nanotube field-effect transistor

Single-walled carbon nanotube field-effect transistors were fabricated using solid electrolyte (PEO plus LiClO4) as gating materials. The SWNT FETs demonstrated strong gate-channel coupling with improved device characteristics compared with back-gated devices. More importantly, the nanotubes can be easily doped using different concentrations of electron acceptor mixed in the polymer materials. The transport type of the devices can be easily controlled through doping.