Electronic properties of n-type carbon nanotubes prepared by CF4 plasma fluorination and amino functionalization.
Single-walled carbon nanotubes (SWNTs) have been fluorinated by CF4 plasma exposure and further functionalized with 1,2-diaminoethane. The degree of amino functionalization is dependent on the degree of initial fluorination rather than oxygen or carbon defects. Reaction at both ends of 1,2-diaminoethane was observed to increase with fluorine content. Back-gated SWNT devices have shown p-type semiconducting behavior for CF4-functionalized SWNTs and n-type semiconducting behavior for amino-functionalized SWNTs. The degree of n-type behavior increases with the amount of nitrogen attached to the SWNTs.
Plank
Natalie O V
NO
School of Engineering and Electronics, The Scottish Microelectronics Centre, University of Edinburgh, King's Buildings, West Mains Road, Edinburgh, EH9 3JF, UK.
Forrest
Gavin A
GA
Cheung
Rebecca
R
Alexander
Andrew J
AJ
D004566:Electrodes; D004583:Electrons; D005029:Ethylenediamines / Q000737:chemistry*; D005466:Fluorocarbons / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D012666:Semiconductors; D013997:Time Factors
D005029:Ethylenediamines; D005466:Fluorocarbons; D037742:Nanotubes, Carbon; C031234:ethylenediamine; C035066:carbon tetrafluoride