2021 Fiscal Year Final Research Report
Optical properties of organic-terminated germanane dispersions by liquid exfoliation
| Project/Area Number |
19K05607
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 35020:Polymer materials-related
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Tachibana Hiroaki 国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 研究グループ長 (10357428)
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| Co-Investigator(Kenkyū-buntansha) |
阿澄 玲子 国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 領域長補佐 (40356366)
溝黒 登志子 国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (90358101)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 層状ゲルマナン / 超音波照射 / 分散液 / 発光 |
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| Outline of Final Research Achievements |
We have found that organic-terminated layered germanane such as alkyl chanis, aromatic, and chiral chains is well dispersed in halogenated solvents by liquid exfoliation, which stands stably for long times. The physical properties and structures of the dispersions were investigated by UV-visible, FT-IR and Raman spectroscopies. Furthermore, we have developed that dispersions for alkyl-terminated germanane can be fabricated by stirring in halogenated solvents at room temperature. A long alkyl chain intercalated between layered germanane is effective for fabrication of the dispersions, resulting in the more efficient exfoliation of layered germanane. The alkyl chain length affected suitable solvents for fabrication of dispersions and the concentrations. This simple, economical and practicable method of fabrication for alkyl-terminated germanane dispersions opens a possible route to develop optoelectronic device by solution process.
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| Free Research Field |
有機機能材料
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| Academic Significance and Societal Importance of the Research Achievements |
グラフェンの炭素原子がケイ素に置き換わったシリセン（シリコンの単原子層膜に相当）や、Geに置き換わったゲルマネン（Geの単原子層膜に相当）は大きなスピン・軌道相互作用により２次元トポロジカル絶縁体となることが予想され、これらの物質を用いた電界誘起トポロジカル・トランジスタなどへの応用が期待されている。それらの応用に適した層状ゲルマナンの単原子層膜の安定な作製方法や製膜・デバイス化の方法を確立したことは意義がある。
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