We probed the charge transfer interaction between the amine-containing molecules: hydrazine, polyaniline and aminobutyl phosphonic acid, and carbon nanotube field effect transistors (CNTFETs). We successfully converted p-type CNTFETs to n-type and drastically improved the device performance in both the ON- and OFF- transistor states utilizing hydrazine as dopant. We effectively switched the transistor polarity between p- and n- type by accessing different oxidation states of polyaniline. We also demonstrated the flexibility of modulating the threshold voltage (Vth) of a CNTFET by engineering various charge-accepting and -donating groups in the same molecule.
@article{arxiv.cond-mat/0603322,
title = {Charge Transfer Induced Polarity Switching in Carbon Nanotube Transistors},
author = {Christian Klinke and Jia Chen and Ali Afzali and Phaedon Avouris},
journal= {arXiv preprint arXiv:cond-mat/0603322},
year = {2015}
}