The 77th JSAP Autumn Meeting, 2016

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Symposium (Oral)

Symposium » Current Trends and Issues in Nanointerface Phenomena and the CharacterizationTechniques

[13p-B7-1~12] Current Trends and Issues in Nanointerface Phenomena and the CharacterizationTechniques

Tue. Sep 13, 2016 1:15 PM - 6:15 PM B7 (Exhibition Hall)

Hirotake Kajii(Osaka Univ.), Yasuhiro Miura(Toin Univ. of Yokohama), Takashi Kobayashi(Osaka Pref. Univ.), Kiyoaki Usami(Osaka Sangyo Univ.)

4:00 PM - 4:30 PM

[13p-B7-7] Evaluation of Bulk and Interface Electronic Structures of Organic Semiconductors by High-Sensitivity UV Photoemission Spectroscopy

〇Hisao Ishii1,2,3, Hiroumi Kinjo2, Tomoya Sato2 (1.CFS Chiba Univ., 2.AIS Chiba Univ., 3.MCRC Chiba Univ.)

Keywords:organic semiconductors, electronic structure, high-sensitivity photoemission spectroscopy

To understand the properties of organic electronic devices, the information on not only frontier orbitals like HOMO but also weak density of states such as trap and midgap states is necessary. By using a tunable photon source with extremely weak stray light, we have developped an apparatus to perform high-sensitity photoemission sepctroscopy with sensitvity of ppm-level. In this talk, our recent works to investigate the electronic structures of bulk, films and interfaces of orgnic semiconductors will be presented.