Journal
APPLIED PHYSICS LETTERS
Volume 76, Issue 14, Pages 1941-1943Publisher
AMER INST PHYSICS
DOI: 10.1063/1.126219
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We made nanometer-scale (gate length of 30 nm) organic thin-film transistors using a self-assembled monolayer (2 nm thick) as a gate insulator. The fabrication steps combine electron-beam lithography and lift-off techniques for the deposition of both metal electrodes and organic semiconductors with a chemical approach (self-assembly of organic molecules) to fabricate the gate insulator. Good performances of these transistors (with a record subthreshold slop of 350 mV/decade and a cutoff frequency of 20 kHz) and low-voltage operation (< 2 V) are demonstrated down to a gate length of 200 nm. A gate voltage modulation of the source-to-drain tunnel current is demonstrated for the 30 nm gate length device. (C) 2000 American Institute of Physics. [S0003-6951(00)03414-8].
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