Frequency Characteristics of Polymer Field-Effect Transistors with Self-Aligned Electrodes Investigated by Impedance Spectroscopy

Hideyuki HATTA; Takashi NAGASE; Takashi KOBAYASHI; Mitsuru WATANABE; Kimihiro MATSUKAWA; Shuichi MURAKAMI; Hiroyoshi NAITO

doi:10.1587/transele.E94.C.1727

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Frequency Characteristics of Polymer Field-Effect Transistors with Self-Aligned Electrodes Investigated by Impedance Spectroscopy

Hideyuki HATTA, Takashi NAGASE, Takashi KOBAYASHI, Mitsuru WATANABE, Kimihiro MATSUKAWA, Shuichi MURAKAMI, Hiroyoshi NAITO

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Keywords: organic field-effect transistors, frequency response, self-aligned method, impedance spectroscopy, cross-linking polymer insulators

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2011 Volume E94.C Issue 11 Pages 1727-1732

DOI https://doi.org/10.1587/transele.E94.C.1727

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Abstract

Solution-based organic field-effect transistors (OFETs) with low parasitic capacitance have been fabricated using a self-aligned method. The self-aligned processes using a cross-linking polymer gate insulator allow fabricating electrically stable polymer OFETs with small overlap area between the source-drain electrodes and the gate electrode, whose frequency characteristics have been investigated by impedance spectroscopy (IS). The IS of polymer OFETs with self-aligned electrodes reveals frequency-dependent channel formation process and the frequency response in FET structure.

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