| 研究課題/領域番号 |
20J12608
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 補助金 |
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| 応募区分 | 国内 |
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| 審査区分 |
小区分33010:構造有機化学および物理有機化学関連
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| 研究機関 | 東京大学 |
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研究代表者 |
YU CRAIG PEIQI 東京大学, 新領域創成科学研究科, 特別研究員(DC2)
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| 研究期間 (年度) |
2020-04-24 – 2022-03-31
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| 研究課題ステータス |
完了 (2021年度)
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| 配分額 *注記 |
2,100千円 (直接経費: 2,100千円)
2021年度: 1,000千円 (直接経費: 1,000千円)
2020年度: 1,100千円 (直接経費: 1,100千円)
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| キーワード | organic semiconductors / molecular design / π-electron systems / field-effect transistors / n-type |
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| 研究開始時の研究の概要 |
Organic semiconductors (OSCs) are promising materials for low-cost, and flexible electronics. To construct logic-circuits for high-end electronics, both p- and n-type OSCs are required. To develop high-performance n-type OSCs, the applicant proposes the following molecular features: 1) achieve two-dimensional molecular assemblies in the crystal structures; 2) fine
-tuning of intermolecular orbital overlaps and suppression of molecular motions; 3) achieve balanced effective masses; 4) obtain air-stable n-type semiconductor performances higher than 10 cm2 V/s.
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| 研究実績の概要 |
In this fiscal year, my research focused on the molecular designs for effective solid-state packing structures with strong and balanced intermolecular orbital overlaps and resilience towards dynamic disorders in high-performance n-type organic semiconductors. The electron-deficient benzo[de]isoquinolino[1,8-gh]quinolinetetracarboxylic diimide (BQQDI) π-electron system is continuously used as the molecular design template and various substituents are incorporated to fine-tune the molecular assembly. With the use of bulky substituents on the BQQDI π-electron system, we achieved a two-dimensional isotropic packing motif and an isotropic charge transport for electron carriers. We demonstrated for the first time that the isotropic electron-carrier transport provides resilience to dynamic disorders and it is extremely beneficial for achieving high electron-carrier mobilities. We experimentally confirmed the isotropic charge transport and obtained an excellent air-stable electron mobility up to 3.0 cm2/Vs using four-probe field-effect transistors. In addition to this study, we also developed a synthetically and functionally versatile electron-deficient benzo[de]isoquinolino[1,8-gh]quinoline Diamide π-electron system that can access a wide range of orbital energies for various organic electronic applications including organic field-effect transistors and organic photovoltaics.
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| 現在までの達成度 (段落) |
令和3年度が最終年度であるため、記入しない。
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| 今後の研究の推進方策 |
令和3年度が最終年度であるため、記入しない。
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