| Project/Area Number |
16K17518
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 液体金属 / 有機トランジスタ / 有機半導体 / 4端子電気伝導測定 / 表面・界面物性 |
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| Outline of Final Research Achievements |
We have developed a liquid metal gallium indium (GaIn) probe by attaching a droplet of GaIn at the apex of a tungsten (W) scanning tunneling microscope tip. The GaIn probes enabled us to measure four-probe electronic transport property on a monolayer organic field-effect transistor, which is difficult to obtain by using conventional experimental methods. We found that field-effect mobility in monolayer pentacene film is highly sensitive to small amount of gas exposure of oxygen. Anisotropy in field-effect mobility on multilayer organic field-effect transistors was also studied by the GaIn probes. Highly anisotropic mobility as high as 40 was precisely measured by square four-probe method.
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