Correlation between the static and dynamic responses of organic single-crystal field-effect transistors

Taiki Sawada, Akifumi Yamamura, Mari Sasaki, Kayo Takahira, Toshihiro Okamoto, Shun Watanabe () and Jun Takeya ()
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Taiki Sawada: The University of Tokyo
Akifumi Yamamura: The University of Tokyo
Mari Sasaki: The University of Tokyo
Kayo Takahira: The University of Tokyo
Toshihiro Okamoto: The University of Tokyo
Shun Watanabe: The University of Tokyo
Jun Takeya: The University of Tokyo

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Transistors, the most important logic elements, are maintained under dynamic influence during circuit operations. Practically, circuit design protocols and frequency responsibility should stem from a perfect agreement between the static and dynamic properties. However, despite remarkable improvements in mobility for organic semiconductors, the correlation between the device performances achieved under static and dynamic circumstances is controversial. Particularly in the case of organic semiconductors, it remains unclear whether parasitic elements that relate to their unique molecular aggregates may violate the radiofrequency circuit model. Thus, we herein report the manufacture of micrometre-scale transistor arrays composed of solution-processed organic semiconductors, which achieve near very high-frequency band operations. Systematic investigations into the device geometrical factors revealed that the radiofrequency circuit model established on a solid-state continuous medium is extendable to organic single-crystal field-effect transistors. The validity of this radiofrequency circuit model allows a reliable prediction of the performances of organic radiofrequency devices.

Date: 2020
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DOI: 10.1038/s41467-020-18616-0

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