J-GLOBAL         Last updated: Nov 13, 2019 at 14:02
Osaka Prefecture University
Graduate School of Engineering, Division of Electronics, Mathematics and Physics

Research Areas


Published Papers

Shoya Sanda, Ryousuke Nakamichi, Takashi Nagase, Takashi Kobayashi, Kazuo Takimiya, Yuichi Sadamitsu, Hiroyoshi Naito
Organic Electronics   69 181-189   Jun 2019
© 2019 Elsevier B.V. The use of non-chlorinated solvents for film deposition in organic field-effect transistors (OFETs) is highly desirable to fabricate flexible and printable electronic circuits by environmentally friendly processes. Here, we in...
Hiroki Nojima, Takashi Kobayashi, Takashi Nagase, Hiroyoshi Naito
Journal of Physics: Conference Series   1220    May 2019
© Published under licence by IOP Publishing Ltd. Modified modulation photocurrent (MPC) measurements were carried out to investigate the carrier transport process in organic photovoltaics based on polymer and fullerene derivatives. In conventional...
Fumiya Shiono, Hayato Abe, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito
Organic Electronics   67 109-115   Apr 2019
© 2019 Elsevier B.V. Exploring optical memory functions in nonvolatile organic field-effect transistor (OFET) memories with top-gate/bottom-contact (TG/BC) configurations can offer effective routes for developing printable, high-density organic me...
Makoto Takada, Takahiro Mayumi, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito
Applied Physics Letters   114    Mar 2019
© 2019 Author(s). A method for determination of the bimolecular recombination constant in working double-injection diodes such as organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs) using impedance spectroscopy is proposed. The ...
Makoto Takada, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito
Journal of Applied Physics   125    Mar 2019
© 2019 Author(s). The electron and hole drift mobilities of organic semiconductor layers, localized tail state distributions, and bimolecular recombination constants in working polymer light-emitting diodes (PLEDs) are determined simultaneously us...
Tasuku Honda, Masaya Nagahara, Naohiro Taka, Jun ichi Nishida, Takeshi Kawase, Katsuhiko Ono, Takashi Kobayashi, Hiroyoshi Naito, Chitoshi Kitamura
European Journal of Organic Chemistry   2019 2107-2114   Mar 2019
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A soluble directly 2,2′-linked tetracene dimer was synthesized. Dimerization of 8-bromo-2,3-dihexyl-5,12-tetracenequinone afforded the corresponding bitetracenequinone, which was converted into ...
Shuri Sato, Makoto Takada, Daisuke Kawate, Masashi Takata, Takashi Kobayashi, Hiroyoshi Naito
Japanese Journal of Applied Physics   58    Jan 2019
© 2019 The Japan Society of Applied Physics. The performance of organic light-emitting diodes (OLEDs) and their interfacial charge density have been studied in tris-(8-hydroxyquinolate) aluminum (Alq3)-based OLEDs with four different hole transpor...
Hideyuki Hatta, Yuhi Miyagawa, Takashi Nagase, Takashi Kobayashi, Takashi Hamada, Shuichi Murakami, Kimihiro Matsukawa, Hiroyoshi Naito
Applied Sciences (Switzerland)   8    Aug 2018
© 2018 by the authors. Information on localized states at the interfaces of solution-processed organic semiconductors and polymer gate insulators is critical to the development of printable organic field-effect transistors (OFETs) with good electr...
Takashi Nagase, Takeshi Hirose, Takashi Kobayashi, Rieko Ueda, Akira Otomo, Hiroyoshi Naito
Applied Sciences (Switzerland)   8    Aug 2018
© 2018 by the authors. This study investigates the influence of self-assembled monolayer treatment of gate insulators on the electrical characteristics of bottom-gate/bottom-contact organic field-effect transistors (OFETs) with short channel lengt...
Tomoya Aiba, Takashi Nagase, Takashi Kobayashi, Yuichi Sadamitsu, Hiroyohi Naito
Proceedings of the International Display Workshops   2 721-722   Jan 2018
© 2018 International Display Workshops. All rights reserved. We have investigated the electrical characteristics of C8-BTBT-based top-gate organic FETs having solution-processed MoO3 hole injection layers. By treating with UV/O3 to MoO3 layers, co...