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タイトル: | Monitoring of Crystallization Process in Solution-Processed Pentacene Thin Films by Chemical Conversion Reactions |
著者: | Shioya, Nobutaka https://orcid.org/0000-0002-2915-894X (unconfirmed) Fujiwara, Ryoi Tomita, Kazutaka Shimoaka, Takafumi https://orcid.org/0000-0001-9131-9831 (unconfirmed) Okudaira, K. Koji Yoshida, Hiroyuki Koganezawa, Tomoyuki Hasegawa, Takeshi https://orcid.org/0000-0001-5574-9869 (unconfirmed) |
著者名の別形: | 塩谷, 暢貴 冨田, 和孝 下赤, 卓史 長谷川, 健 |
発行日: | 10-Jan-2021 |
出版者: | American Chemical Society (ACS) |
誌名: | The Journal of Physical Chemistry C |
巻: | 125 |
号: | 4 |
開始ページ: | 2437 |
終了ページ: | 2445 |
抄録: | Solution-processable organic semiconductors having bulky substituent groups on the π-conjugated skeleton are rapidly gaining attention for their potential applications to large-area electronics. While the substituent groups contribute to the good solubility in organic solvents, they give rise to hopping sites in a thin film, affecting adversely the charge-carrier transport. As an alternative material, a solvent-soluble precursor compound with thermally cleavable functional groups is promising, which can be converted by heat treatment into a thin film to generate the desired material consisting solely of conjugated systems. This precursor approach is practically applied to various thin-film-based devices. The overall process of the thin film growth, however, remains unrevealed. In the present study, solution-processed pentacene thin films are prepared from a thermally convertible precursor, and the structural evolution during the chemical conversion reaction has been revealed by a combination of cutting-edge analytical tools of two-dimensional X-ray diffraction (2D-GIXD) and p-polarized multiple-angle incidence resolution spectrometry (pMAIRS). The highlight is that pentacene is crystallized in a stepwise manner in the thermally converted films, which is substantially different from a typical growth process. In addition, influences of the oxidation reaction of pentacene on the molecular arrangement are also discussed quantitatively. This study provides a fundamental schematic of thin films grown by the precursor method. |
著作権等: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpcc.0c10431. The full-text file will be made open to the public on 10 January 2022 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/261219 |
DOI(出版社版): | 10.1021/acs.jpcc.0c10431 |
出現コレクション: | 学術雑誌掲載論文等 |
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