2012 Fiscal Year Final Research Report
Innovation and electronic characterization of well-ordered hetero-interfaces on the organic single crystal surfaces
| Project/Area Number |
23750209
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional materials/Devices
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| Research Institution | Chiba University |
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Principal Investigator |
NAKAYAMA Yasuo 千葉大学, 先進科学センター, 特任講師 (30451751)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 有機電子材料 / 素子 |
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| Research Abstract |
Hetero-interfaces between an organic semiconducting material and an electrode metal, gate insulator, or another organic semiconductor are one of the most crucial factors dominating the performance of the practical organic electronic devices. In the present study, the electronic structures of such organic hetero-interfaces were elucidated on well-ordered interfaces fabricated onto the organic single crystal surfaces by means of angle-resolved photoelectron spectroscopy. On the rubrene single crystals covered with an overlayer of a normal alkane molecule as a model interface of the channel region a high-mobility organic field effect transistor, un-modified valence band dispersion width (i.e. band effective mass of conducting holes) was revealed. Hetero-interfaces of organic semiconductors with other organic materials or electronically quantized metal nano-structures were also systematically investigated.
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[Presentation] Photoemission investigation inside the organic semiconductors: two-dimensional valence band structures, buried interfaces, and low-density of gap states2013
Author(s)
Yasuo Nakayama, Shin'ichi Machida, Yuki Uragami, Hiroumi Kinjo, T. Luan Nguyen, Masayuki Yamamoto, Yusuke Ozawa, Kazuhiko Mase, Yutaka Noguchi, K. Rasika Koswattage, Hisao Ishii
Organizer
The 2013 EMN Spring Meeting
Place of Presentation
Orlando, USA
Year and Date
2013-10-04
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[Presentation] Electronic investigation inside crystalline organic semiconductors: two-dimensional valence band structures, gap states, and buried interfaces2012
Author(s)
Yasuo Nakayama, Shin'ichi Machida, Jens Niederhausen, Yuki Uragami, Hiroumi Kinjo, K. Rasika Koswattage, Kazuhiko Mase, Antje Vollmer, Jugen P.Rabe, Norbert Koch, Hisao Ishii
Organizer
International Symposium on Organic Transistors and Functional Interfaces (OFET2012)
Place of Presentation
Princeton, USA
Year and Date
2012-10-28
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[Presentation] Electronic Structures of Novel Metal-on-Organic and Organic-on-Metal Interfaces2011
Author(s)
Yasuo Nakayama, Shin-ichi Machida, Jens Niederhausen, Hiroumi Kinjo, Chin-Hung Chen, Che-Chia Hsu, Meng-Kai Lin, Chin-Yong Wang, Antje Vollmer, Tun-Wen Pi, S.-J. Tang, Norbert Koch, Hisao Ishii
Organizer
The 6th Workshop on Advanced Spectroscopy of Organic Materials for Electronic Applications (ASOMEA6)
Place of Presentation
Ishikawa, Japan
Year and Date
2011-11-24
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