| 研究課題/領域番号 |
21J13108
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| 研究機関 | 筑波大学 |
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研究代表者 |
李 玲穎 筑波大学, 数理物質科学研究科, 特別研究員(DC2)
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| 研究期間 (年度) |
2021-04-28 – 2023-03-31
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| キーワード | ソフトエレクトロニクス / 自己組織化リソグラフィ / 表面・界面物性 / パターニング / 付加製造 / 有機トランジスタ / 透明導電フィルム / プリンテッドエレクトロニクス |
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| 研究実績の概要 |
An ultrahigh-resolution directed self-assembly strategy named dual surface architectonics (DSA) has been proposed for manufacturing high-performance soft electronics. The DSA strategy endows submicrometer-scale surface regions with strong adsorbing and pinning effect toward functional inks via simple photoirradiation and chemical polarization, which enables spontaneous patterning of metal nanoparticle-based and nanowire-based electrodes with ultrahigh resolution, prominent electrical conductivity, outstanding mechanical flexibility, and a high degree of circuit design freedom. The DSA strategy exhibits broad application prospects in soft electronic manufacturing, such as large-scale flexible transparent conductors and fully printed short-channel organic thin-film transistors.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
According to the research plan, the directed self-assembly techniques have been developed for patterning high-resolution soft complex circuits spontaneously with prominent conductivity and flexibility. Notably, benefitted by the significantly optimized patterning capacity, ultrahigh resolution (600 nm) of the self-assembled electrodes has been first achieved via non-lithographic liquid-mediated technology. Moreover, the fully printed organic thin film transistors with short channel length (1μm) have been manufactured successfully with large on-off ratio and high mobility, which not only accomplish the task ahead of schedule but also exhibit a broad application prospect of directed self-assembly techniques in the future field of additively manufactured electronics.
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| 今後の研究の推進方策 |
In conventional directed self-assembly, the functional circuits are generally patterned on the modified hydrophilic regions of the hydrophobic substrate, resulting in a high contact resistance between electrode circuits and semiconductor layers and thus hindering the practical applications. The newly proposed directed self-assembly strategy offers a reversed processability, which generates functional patterns on the hydrophobic regions and provides high-surface-free-energy states. Hence, the issues of high contact resistance will be explored by laminating the semiconductors onto the homogenous electrode circuits. More varieties of one-dimensional functional materials will be used to pattern different functional layers toward facile manufacture of stretchable organic thin-film transistors.
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