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Year: | 2005 | ||||
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Type of Publication: | Article | ||||||
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Journal: | Applied Physics Letters | Volume: | 86 | ||||
Number: | 18 | Pages: | 182102 | ||||
Month: | MAY 2 2005 | ||||||
Note: | PT: J; TC: 39; UT: WOS:000229288700027 |
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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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