ID | 63343 |
フルテキストURL | |
著者 |
Zhang, Yanting
Research Institute for Interdisciplinary Science, Okayama University
Eguchi, Ritsuko
Research Institute for Interdisciplinary Science, Okayama University
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Hamao, Shino
Research Institute for Interdisciplinary Science, Okayama University
Goto, Hidenori
Research Institute for Interdisciplinary Science, Okayama University
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Kubozono, Yoshihiro
Research Institute for Interdisciplinary Science, Okayama University
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抄録 | The magnitude of the field-effect mobility mu of organic thin-film and single-crystal field-effect transistors (FETs) has been over-estimated in certain recent studies. These reports set alarm bells ringing in the research field of organic electronics. Herein, we report a precise evaluation of the mu values using the effective field-effect mobility, mu(eff), a new indicator that is recently designed to prevent the FET performance of thin-film and single-crystal FETs based on various phenacene molecules from being overestimated. The transfer curves of a range of FETs based on phenacene are carefully categorized on the basis of a previous report. The exact evaluation of the value of mu(eff) depends on the exact classification of each transfer curve. The transfer curves of all our phenacene FETs could be successfully classified based on the method indicated in the aforementioned report, which made it possible to evaluate the exact value of mu(eff) for each FET. The FET performance based on the values of mu(eff) obtained in this study is discussed in detail. In particular, the mu(eff) values of single-crystal FETs are almost consistent with the mu values that were reported previously, but the mu(eff) values of thin-film FETs were much lower than those previously reported for mu, owing to a high absolute threshold voltage, vertical bar V-th vertical bar. The increase in the field-effect mobility as a function of the number of benzene rings, which was previously demonstrated based on the mu values of single-crystal FETs with phenacene molecules, is well reproduced from the mu(eff) values. The FET performance is discussed based on the newly evaluated mu(eff) values, and the future prospects of using phenacene molecules in FET devices are demonstrated.
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発行日 | 2022-01-31
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出版物タイトル |
ACS Omega
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巻 | 7巻
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号 | 6号
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出版者 | American Chemical Society
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開始ページ | 5495
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終了ページ | 5501
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ISSN | 2470-1343
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | © 2022 The Authors.
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論文のバージョン | publisher
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PubMed ID | |
DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1021/acsomega.1c06932
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ライセンス | https://creativecommons.org/licenses/by-nc-nd/4.0/
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