Type

Journal Article

Authors

Werner Blau
Robert Charles Barklie
Jonathan Nesbit Coleman

Subjects

Chemistry

Topics
conductivity conjugated polymer composite carbon nanotube organic polymer carrier density physics percolation

Percolation-dominated conductivity in a conjugated-polymer-carbon-nanotube composite (1998)

Abstract We have made electrical measurements on a system using carbon nanotubes as the dopant material. A semiconjugated, organic polymer was mixed with carbon nanotubes to form a wholly organic composite. Composite formation from low to high nanotube concentration increases the conductivity dramatically by ten orders of magnitude, indicative of percolative behavior. Effective mobilities were calculated from the space-charge regions of the current-voltage characteristics for the 0?8 % mass fractions. After an initial rise these were seen to fall from 1?8 % doping levels as predicted by theory. From the values for conductivity and mobility, an effective carrier density was calculated. This was seen to decrease between 0% and 1%, before rising steadily.
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Full list of authors on original publication

Werner Blau, Robert Charles Barklie, Jonathan Nesbit Coleman

Experts in our system

1
Werner Blau
Trinity College Dublin
Total Publications: 109
 
2
Jonathan Coleman
Trinity College Dublin
Total Publications: 217