2011 Fiscal Year Final Research Report
Unraveling charge transport property and electronic states of organic thin films and their interfaces with structure-controlled films
| Project/Area Number |
20245039
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials/Devices
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| Research Institution | Chiba University |
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Principal Investigator |
UENO Nobuo 千葉大学, 大学院・融合科学研究科, 教授 (40111413)
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| Co-Investigator(Renkei-kenkyūsha) |
OKUDAIRA Koji 千葉大学, 大学院・融合科学研究科, 准教授 (50202023)
KERA Satoshi 千葉大学, 大学院・融合科学研究科, 准教授 (10334202)
SAKAMOTO Kazuyuki 千葉大学, 大学院・融合科学研究科, 准教授 (70261542)
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| Project Period (FY) |
2008 – 2011
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| Keywords | 有機半導体 / 有機薄膜 / 界面 / 電気伝導 / 電荷移動度 / 光電子分光 / 電子状態 |
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| Research Abstract |
We developed experimental method in investigating quantum chemical mechanism of the charge mobility, namely hopping and band transport mobility, and origin of the energy level alignment at interfaces in organic devices using high-precision ultraviolet photoelectron spectroscopy (UPS). The latter was realized by constructing ultrahigh-sensitivity UPS spectrometer that is effective to observe invisible electron density-of-states in the organic band gap even for radiation sensitive organic materials. We further found that the ultrahigh sensitivity UPS can also probe varied interfaces. Based on these results, we succeeded to directly bridge charge transport property and electronic states in organic semiconductors.
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[Journal Article] Influence of intramolecular polar bonds on interface energetics in perfluoro-pentacene on Ag (111)2010
Author(s)
S. Duhm, S. Hosoumi, I. Salzmann, A. Gerlach, M. Oehzelt, B. Wedl, T-L. Lee, F. Schreiber, N. Koch, N. Ueno, S. Kera
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Journal Title
Phys. Rev. B
Volume: 81
Pages: 045418-1-6
DOI
Peer Reviewed
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