Terahertz spectroscopic elucidation of the carrier dynamics in semiconducting conjugated polymers
| Project/Area Number |
20740174
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics I
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| Research Institution | Nagoya University |
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Principal Investigator |
UNUMA Takeya Nagoya University, 大学院・工学研究科, 助教 (20456693)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | テラヘルツ / 有機半導体 / 共役系高分子 / 有機導体 / 一次元系 |
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| Research Abstract |
To clarify the optoelectronic nature of charge carriers in conjugated polymers, we measured their complex conductivity spectra using terahertz electromagnetic waves, which are ranked between light and radio waves. Carriers created chemically in a typical conjugated polymer, polythiophene, exhibited a rather high dc conductivity but a different spectral shape from the metallic feature in the terahertz frequency range. This means that carriers are, to a certain extent, spatially localized. We found that carriers in polythiophenes become less localized with increasing carrier density.
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Report
(4 results)
Research Products
(10 results)
