Abstract
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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