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Lee, Chang Young
Carbon Nanomaterials Lab
Research Interests
  • Carbon nanomaterials, gas sensors, neuroanalytical chemistry, biomimetic nanosystems

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Carbon nanotubes-semiconductor networks for organic electronics: The pickup stick transistor

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Title
Carbon nanotubes-semiconductor networks for organic electronics: The pickup stick transistor
Other Titles
Carbon nanotubes-semiconductor networks for organic electronics: The pickup stick transistor
Author
Bo, X.-Z.Lee, Chang YoungStrano, M. S.Goldfinger, M.Nuckolls, C.Blanchet, Graciela B.
Keywords
THIN-FILM TRANSISTORS; HIGH-RESOLUTION; LARGE-AREA; POLYMERS; CIRCUITS
Issue Date
2005-05
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.86, no.18, pp.182102 -
Abstract
We demonstrate an alternative path for achieving high transconductance organic transistors in spite of relatively large source to drain distances. The improvement of the electronic characteristic of such a scheme is equivalent to a 60-fold increase in mobility of the underlying organic semiconductor. The method is based on percolating networks, which we create from a dispersion of individual single-wall carbon nanotubes and narrow ropes within an organic semiconducting host. The majority of current paths between source and drain follow the metallic nanotubes but require a short, switchable semiconducting link to complete the circuit. With these nanotube-semiconducting composites we achieve effectively a 60X reduction in source to drain distance, which is equivalent to a 60-fold increase of the '' effective '' mobility of the starting semiconducting material with a minor decrease of the on/off current ratio. These field-induced percolating networks allow for the fabrication of high-transconductance transistors having relatively large source to drain distances that can be manufactured inexpensively by commercially available printing techniques. (c) 2005 American Institute of Physics
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DOI
10.1063/1.1906316
ISSN
0003-6951
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