Transport properties of C78, C90 and Dy@C82 fullerenes-nanopeapods by field effect transistors

We present transport properties of various fullerene nanopeapods used as channels of field effect transistors (FET). C-60 and C-78 fullerenes and Gd@C-82 and Dy@C-82 metallofullerenes peapods FET show both p- and n-type ambipolar behavior. In case of C-90-peapods, all devices have shown so far metallic properties. These novel electronic properties of the peapods can be explained by the so-called band-gap modulation originated from the encaging fullerenes and metallofullerenes in nanotubes. (C) 2003 Elsevier B.V. All rights reserved.