Charge transfer induced polarity switching in carbon nanotube transistors.
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.
Klinke
Christian
C
IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, USA. cklinke@us.ibm.com
Chen
Jia
J
Afzali
Ali
A
Avouris
Phaedon
P
D000588:Amines / Q000737:chemistry*; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004579:Electron Transport; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D037742:Nanotubes, Carbon / Q000032:analysis / Q000737:chemistry*; D014173:Transistors, Electronic
D000588:Amines; D037742:Nanotubes, Carbon