Quantitative characterization of charge transport properties in organic semiconductors by precise intermolecular band-dispersion measurement
Project/Area Number |
24685032
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Partial Multi-year Fund |
Research Field |
Functional materials/Devices
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Research Institution | Institute for Molecular Science |
Principal Investigator |
YAMANE Hiroyuki 分子科学研究所, 光分子科学研究領域, 助教 (50402459)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥26,130,000 (Direct Cost: ¥20,100,000、Indirect Cost: ¥6,030,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2012: ¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
|
Keywords | 有機半導体 / 電子状態 / 角度分解光電子分光法 / シンクロトロン光 / 薄膜・界面 / 角度分解光電子分光 / エネルギーバンド / 分子間相互作用 / 表面・薄膜 |
Outline of Final Research Achievements |
Electric conduction in organic semiconductors is one of the fundamental and important processes in organic electronics such as field-effect transistors and photovoltaic cells. The energy-vs-wavevector relation (i.e., energy band dispersion), obtained by angle-resolved photoemission spectroscopy, is a fundamental basis for understanding charge transport mechanisms of solids. In the case of organic semiconductors, the energy band dispersion, originating from the quite weak intermolecular interaction (so-called intermolecular band dispersion), is difficult to observe precisely. By overcoming such a serious problem, in the present work, we have realized the precise and systematic examination of the intermolecular band dispersion. Based on the chemical substitution of molecules in the precise band-dispersion measurement, we have succeeded in the quantitative characterization of the correlation between the charge transport property and the crystalline structure in organic semiconductors.
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Report
(4 results)
Research Products
(16 results)