2015 Fiscal Year Final Research Report
Understanding of electrical conduction mechanism in conductive polymer: Observation of low-temperature resistivity and nanoscale electronic state
| Project/Area Number |
25400352
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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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| Research Field |
Condensed matter physics II
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| Research Institution | Kyushu Sangyo University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SASAKI Takahiko 東北大学, 金属材料研究所, 教授 (20241565)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 導電性高分子 / 電気伝導 / 走査トンネル顕微鏡 / ナノ構造 / 低温 |
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| Outline of Final Research Achievements |
In order to study a mechanism of electrical conductivity in the conductive polymer poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT/PSS), measurements of low-temperature electrical resistivity and scanning tunneling microscopy (STM) have been performed in ethylene glycol added PEDOT/PSS film. The edge-casting PEDOT/PSS film shows the low resistivity ～1 mΩcm and the orientation effect with the anisotropy ～2.2. STM results indicate that the film consists of fibril microstructures (width: ～3 nm) and the conductivity increases along the fibril. On the other hand, the drop-casting film and spin-coated film show randomly oriented grain structure (20-40 nm) without any orientation effect.
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| Free Research Field |
低温電子物性
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