2018 Fiscal Year Final Research Report
Development of high-performance organic semiconductors by multi-hierarchy control
| Project/Area Number |
15H02196
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Organic and hybrid materials
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| Research Institution | Tohoku University (2017-2018)
Institute of Physical and Chemical Research (2015-2016) |
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Principal Investigator |
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| Research Collaborator |
Kawabata Kohsuke
Nakano Masahiro
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| Project Period (FY) |
2015-04-01 – 2019-03-31
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| Keywords | 有機半導体 / 有機導体 / 超分子 / 有機エレクトロニクス / 有機薄膜デバイス / 結晶構造制御 / 新規骨格 |
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| Outline of Final Research Achievements |
In this research, we first aim to search unexplored organic semiconductor frameworks, and then based on such frameworks, to control molecular arrangement and orientation in molecular assembly at molecular design stage. Rational molecular design, organic synthesis, single crystal structure analysis, thin film structure analysis are the key methods in the project. In the actual project, development of unexplored frameworks and control of higher-order structures, and further development of organic semiconductors contributing to the realization of high-performance transistors and organic thin-film solar cells have been done; novel n-type semiconductor frameworks such as naphthothiophene imide and acedidithiophenedione and extended thienoacenes as p-type semiconductor frameworks are developed; high-performance materials and devices are developed based on them. Furthermore, a method of crystal structure control of semiconducting molecules based on molecular modification is established .
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| Free Research Field |
有機半導体
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| Academic Significance and Societal Importance of the Research Achievements |
有機半導体の研究分野は電子デバイスや太陽電池など、社会実装に直結する可能性があり、高性能材料やそれらのデバイス化における知見は産業技術として重要性を持つ。一方、学術的には、科学的側面から材料物性やデバイス物性に影響する因子を明確にすることが極めて重要である。特に、最新の有機合成をもってすれば、多様な有機半導体分子が合成できるようになった現在、材料物性の鍵を握る固体構造（集合体構造、結晶構造）を分子設計段階で予測・制御することが究極の課題である。本研究では、有機半導体の研究分野における以上の重要課題に対し、多くの知見を与えることが出来、基礎科学、産業応用の両面から意義深いものである。
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