Control of electronic properties of organic semiconductor thin films by adjusting their structure at the interface with conductive substrate
| Project/Area Number |
25410093
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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 |
Functional solid state chemistry
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| Research Institution | Kyoto University |
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Principal Investigator |
Sato Naoki 京都大学, 化学研究所, 教授 (10170771)
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| Co-Investigator(Kenkyū-buntansha) |
MURDEY Richard 京都大学, 化学研究所, 助教 (20447931)
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| Co-Investigator(Renkei-kenkyūsha) |
YOSHIDA Hiroyuki 京都大学, 化学研究所, 助教 (00283664)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 有機エレクトロニクス / 有機半導体 / 薄膜 / 電極界面 / 構造 / 電子構造 / 電荷トラップ / 光伝導 / 薄膜構造 / 光電荷担体発生 / 量子収率 / トラップ状態 / 電荷注入障壁 / 有機半導体薄膜 / 整流特性 / ブロッキング電極 / 鉛フタロシアニン / トラップ準位 |
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| Outline of Final Research Achievements |
With the idea of elucidating basic problems common to various electronic devices of organic semiconductors toward further development of organic electronics, we investigated the characteristics of structure and electronic structure in organic semiconductor thin films and at their interface with conductive substrates, using chiefly our unique method for in situ observation of conductivity and photoconductivity of a thin film in preparation onto a substrate under ultrahigh vacuum. Then, we disclosed examining correlation between energy parameters for the electrode and the film was insufficient to control performance of such devices and demonstrated the importance of understanding and regulating the condition at the interface as well as charge-carrier trap states in the film. Moreover, it turned out that intrinsic or extrinsic photoconductivity of organic semiconductors is selectively observed by regulating electronic structures around the interface between the film and the electrode.
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Report
(4 results)
Research Products
(38 results)
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[Journal Article] Quantitatively identical orientation-dependent ionization energy and electron affinity of diindenoperylene2013
Author(s)
W. N. Han, K. Yonezawa, R. Makino, K. Kato, A. Hinderhofer, R. Murdey, R. Shiraishi, H. Yoshida, N. Sato, N. Ueno, and S. Kera
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Journal Title
Appl. Phys. Lett.
Volume: 103
Issue: 25
Pages: 253301-253301
DOI
NAID
Related Report
Peer Reviewed
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