Carrier transfer in conducting polymer PEDOT:PSS films investigated by terahertz time domain spectroscopic ellipsometry
| Project/Area Number |
26630140
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
Yamashita Masatsugu 国立研究開発法人理化学研究所, 光量子工学研究領域, 上級研究員 (10360661)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | テラヘルツ分光 / エリプソメトリ / 導電性高分子 / キャリア伝導 / 分光エリプソメトリ / キャリア輸送 / 非破壊測定 / テラヘルツ電磁波 / キャリア輸送特性 / 非破壊評価法 / 非破壊評価 |
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| Outline of Final Research Achievements |
We have developed multi-angle of incidence terahertz time domain spectroscopic ellipsometry and applied it to study the anisotropic carrier transfer in conducting polymer PEDOT:PSS (poly(3,4 ethylenedioxythiophene):poly (styrensulfonate) ) films. By using the optical model describing the relation between the ellipsometric parameter and optical conductivity, we succeeded to numerically obtain the in-plane and out-of-plane optical conductivity of PEDOT:PSS films from the ellipsometric parameters measured at three different incident angle of terahertz waves. While the obtained frequency dependence of in-plane optical conductivity shows the presence of the conducting network with the weakly localized metallic state, that of out-of plane one indicates the variable hopping of carrier transfer between localized states.
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Report
(4 results)
Research Products
(22 results)
