Device characteristics of short-channel polymer field-effect transistors

Hirose, Takeshi; Nagase, Takashi; Kobayashi, Takashi; Ueda, Rieko; Otomo, Akira; Naito, Hiroyoshi
August 2010
Applied Physics Letters;8/23/2010, Vol. 97 Issue 8, p083301
Academic Journal
The influence of channel materials on the electrical characteristics of organic field-effect transistors (OFETs) with short-channel lengths ranging from 1 μm to 30 nm is investigated using polymer semiconductors. The current-voltage characteristics of short-channel OFETs strongly depend on the electrode/organic semiconductor contacts, and the parabolic output current due to space-charge limited current can be reduced by increasing the ionization potential of organic semiconductors. Transistor operations with a high on/off ratio over 103 are achieved in OFETs with 30 nm length channels.


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