Organization
Institute of Integrated Research Laboratory for Future Interdisciplinary Research of Science and Technology Associate Professor
Title
Associate Professor
External link
IINO HIROAKI
News & Topics
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有機トランジスタ用半導体の超高速塗布成膜に成功 プリンテッドエレクトロニクスの実用化に大きく前進
2020/07/07
Languages： Japanese
要点-液晶性有機半導体の特性を活用し従来に比べ2,000倍以上の成膜速度を達成-10cm角基板にボトムゲートボトムコンタクト型トランジスタ250個を試作-素子間のばらつきの小さい高移動度（Ph-BTBT-10:4.1cm2/Vs）を実現概要
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液晶性を活用した高性能有機トランジスタ材料を開発 ～高い耐熱性と酸化物半導体並みの高い移動度実現～
2015/04/13
Languages： Japanese
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Performance and durability combine in liquid crystal transistors
2015/04/13
Languages： English
News & Media
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2016/02/21 22:54
Languages： Japanese
TV： TBS 「未来の起源」
Degree
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Master of Engineering ( Tokyo Institute of Technology )
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Doctor of Engineering ( Tokyo Institute of Technology )
Research Interests
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organic semiconductor
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棒状液晶
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円盤状液晶
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liquid crystalline organic-semiconductor
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有機半導体
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液晶
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移動度
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liquid crystal
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calamitic liquid crystal
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discotic liquid crystal
Research Areas
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Mechanics of materials and materials
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Nanotechnology/Materials / Crystal engineering
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electric and electronic materials
Education
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Tokyo Institute of Technology Interdisciplinary Graduate School of Science and Engineering Department of Information Processing
- 2006
Country： Japan
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Tokyo Institute of Technology Graduate School, Division of Integrated Science and Engineering Department of Information Processing
- 2006
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Tokyo Institute of Technology Faculty of Engineering Department of Electrical and Electronic Engineering (Power Systems Course)
- 2001
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Tokyo Institute of Technology School of Engineering Department of Electrical and Electronic Engineering
- 2001
Country： Japan
Research History
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Tokyo Institute of Technology Institute of Innovative Research Associate Professor
2016.4
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Tokyo Institute of Technology Imaging Science and Engineering Laboratory Associate Professor
2012.9 - 2016.3
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Tokyo Institute of Technology Imaging Science and Engineering Laboratory Assistant Professor
2010.4 - 2012.8
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Tokyo Institute of Technology Graduate School of Science and Engineering, Department of Imaging Science and Engineering Laboratory Assistant Professor
2007.4 - 2010.3
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Tokyo Institute of Technology Graduate School of Science and Engineering, Department of Imaging Science and Engineering Laboratory
2006 - 2007.3
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-:Tokyo Institute of Technology Imaging Science and Engineering Laboratory, Graduate School of Science and Engineering Assistant Professor
2006
Professional Memberships
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日本写真学会
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THE CHEMICAL SOCIETY OF JAPAN
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THE JAPANESE LIQUID CRYSTAL SOCIETY
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THE IMAGING SOCIETY OF JAPAN
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the Japan Society of Applied Physics
Papers
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An Ambipolar Alkynylborane Compound with Nearly Trap-Free Charge-Carrier Transport under Ambient Air Conditions International journal
Kentaro Mishiba, Kohki Nagata, Yuya Tanaka, Hiroaki Iino
ACS Materials Letters 7 ( 6 ) 2199 - 2205 2025.5
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液晶性有機半導体を用いたイメージセンサピクセルの作製 Reviewed
Issei Suzuki, Jun-ichi Hanna, Hiroaki Iino
日本画像学会誌 Vol. 64 ( No. 1 ) 3 - 8 2025.2
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Capacitance enhancement by ion-laminated borophene-like layered materials Reviewed
Tetsuya Kambe, Masahiro Katakura, Hinayo Taya, Hirona Nakamura, Takuya Yamashita, Masataka Yoshida, Akiyoshi Kuzume, Kaori Akagami, Ryota Imai, Jumpei Kawaguchi, Shigeyuki Masaoka, Shoichi Kubo, Hiroaki Iino, Atsushi Shishido, Kimihisa Yamamoto
Nature Communications 16 ( 1 ) 2025.1
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Organic Thin Film Transistors Using Liquid Crystalline Organic Semiconductor for High Speed and Low Energy Fabrication Process Invited Reviewed
Hiroaki Iino
Journal of the Imaging Society of Japan 63 ( 6 ) 656 - 661 2024.12
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High-speed blade-coating using liquid crystalline organic semiconductor Ph-BTBT-10 Reviewed
Issei Suzuki, Jun-ichi Hanna, Hiroaki Iino
Applied Physics Express 17 ( 5 ) 051007 - 051007 2024.5
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Flexible Organic Thin-Film Transistors with Liquid-Crystalline Organic Semiconductor, Ph-BTBT-10 Reviewed
Issei Suzuki, Shohei Koizumi, Yoshiaki Kito, Jun-ichi Hanna, Hiroaki Iino
physica status solidi (a) 220 ( 24 ) 2300281 - 2300281 2023.9
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High-performance organic field effect transistor of liquid crystalline organic semiconductor using silver electrodes with bottom-gate top-contact configuration Reviewed
Sabina Kang, Kai Aburada, Jun-ichi Hanna, Hiroaki Iino
Applied Physics Express 16 091005 - 091005 2023.9
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Universally Exhaustive Generation of Molecular Structures and Prediction of Their Electronic States Using Machine Learning for N-type Organic Transistor Materials
Akira Ohno, Jun-ichi Hanna, Hiroaki Iino, Kosuke Nakago, Taiki Yamaguchi, Motoki Abe, Hirotaka Akita, Mizuki Takemoto
Chemistry - An Asian Journal Vol. 2003 ( No. ) 2023.2
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Interface engineering to enhance charge carrier injection in Ph-BTBT-10 organic thin-film transistor with silver source-drain electrodes
Sabina Kang, Jun-ichi Hanna, Hiroaki Iino
Molecular Crystals and Liquid Crystals Vol. ( No. ) 2023.2
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Solution-processed near-infrared organic photodetector based on a liquid crystalline phthalocyanine derivative for vital signal monitoring
Shahriar Kabir, Yukiko Takayashiki, Jun-ichi Hanna, Hiroaki Iino
Jpn. J. Appl. Phys. Vol. 62 ( No. ) 2023.1
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Near-infrared organic photodetectors with a soluble Alkoxy-Phthalocyanine derivative
Shahriar Kabir, Yukiko Takayashiki, Akira Ohno, Jun-ichi Hanna, Hiroaki Iino
Optical Materials 126 ( No. ) 112209 - 112209 2022.4
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Shun Takamaru, Jun-ichi Hanna, Hiroaki Iino
Applied Physics Express 15 ( 3 ) 031001 - 031001 2022.3
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Finn Schulz, Shun Takamaru, Tobias Bens, Jun-ichi Hanna, Biprajit Sarkar, Sabine Laschat, Hiroaki Iino
Physical Chemistry Chemical Physics 24 ( 38 ) 23481 - 23489 2022
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Shun Takamaru, Jun-ichi Hanna, Hiroaki Iino
Japanese Journal of Applied Physics 60 ( SB ) SBBG08 - SBBG08 2021.5
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Carrier transport properties in highly ordered smectic liquid crystal phase
Takenori Nitta, Takayuki Usui, Hiroaki Iino, Akira Ohno, Jun-ichi Hanna
Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) 214 ( 1 ) 10 - 17 2021.3
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液晶性が実現する高速塗布による高移動度有機半導体薄膜の作製
飯野裕明, 半那純一
コンバーテック Vol. 2020 ( No. 10 ) 2020.10
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Scalable Ultrahigh-Speed Fabrication of Uniform Polycrystalline Thin Films for Organic Transistors
Hao Wu, Hiroaki Iino, Jun-Ichi Hanna
ACS Applied Materials and Interfaces 12 ( 26 ) 29497 - 29504 2020.7
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Impact of fluorine doping on solution-processed In–Ga–Zn–O thin-film transistors using an efficient aqueous route
Masashi Miyakawa, Mitsuru Nakata, Hiroshi Tsuji, Hiroaki Iino, Yoshihide Fujisaki
AIP Advances Vol. 10 ( No. ) 2020.6
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Carrier transport properties in highly ordered smectic liquid crystal phase
Takenori Nitta, Takayuki Usui, Hiroaki Iino, Akira Ohno, Jun-Ichi Hanna
IEEJ Transactions on Fundamentals and Materials 140 ( 4 ) 253 - 258 2020
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Origin of charge carrier transport properties in smectic E phase
Takenori Nitta, Takayuki Usui, Hiroaki Iino, Akira Ohno, Jun-Ichi Hanna
IEEJ Transactions on Fundamentals and Materials 140 ( 5 ) 292 - 298 2020
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液晶性を活用した多結晶有機半導体の配向制御とそのデバイス応用
飯野裕明
応用物理学会 有機分子バイオエレクトロニクス分科会誌 Vol. 30 ( No. 3 ) 2019.8
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Liquid crystalline organic semiconductors International journal
Hiroaki Iino, Jun-Ichi Hanna
High Quality Liquid Crystal Displays and Smart Devices 303 - 314 2019.1
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液晶性を活用した実用的な有機薄膜トランジスタ材料
飯野裕明
OPTRONICS Vol. 38 ( No. 445 ) 2019.1
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液晶性有機トランジスタ材料の特質と材料設計
飯野裕明, 半那純一
日本写真学会誌 Vol. 82 ( No. 1 ) 2019.1
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Novel calamitic liquid crystalline organic semiconductors based on electron-deficient dibenzo[: C, h] [2,6]naphthyridine: Synthesis, mesophase, and charge transport properties by the time-of-flight technique
Ming-Cong Yang, Jun-Ichi Hanna, Hiroaki Iino
Journal of Materials Chemistry C 7 ( 42 ) 13192 - 13202 2019
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Carrier transport properties of asymmetrically substituted calamitic liquid crystal in the smectic a phase of dibenzo[c,h][2,6]naphthyridine derivatives
Mingcong Yang, Junichi Hanna, Hiroaki Iino
Chemistry Letters 48 ( 12 ) 1515 - 1518 2019
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Novel calamitic liquid crystalline organic semiconductors based on electron-deficient dibenzo[c,h][2,6]naphthyridine: synthesis, mesophase, and charge transport properties by the time-of-flight technique
Ming-Cong Yang, Jun-ichi Hanna, Hiroaki Iino
Journal of Materials Chemistry C 2019
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Solution-processable liquid crystalline chrysene semiconductors with wide band gap: Self-organization and carrier transport properties Reviewed
Tengzhou Yang, Fuhua Dai, Hiroaki Iino, Masayuki Kanehara, Xuying Liu, Takeo Minari, Chuan Liu, Jun-ichi Hanna
Organic Electronics 63 184 - 193 2018.9
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Solution-processable liquid crystalline chrysene semiconductors with wide band gap: Self-organization and carrier transport properties
Tengzhou Yang, Fuhua Dai, Hiroaki Iino, Masayuki Kanehara, Xuying Liu, Takeo Minari, Chuan Liu, Jun-ichi Hanna
Organic Electronics Vol. 63 2018.9
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Bilayered Crystalline Organic Semiconductors for Solution-processed OFETs: Asymmetricaly-substituted Smectic Liquid Crystal of Benzo[1,2-b:4,5-b']dithiophene Derivatives
Hao Wu, Hiroaki Iino, Jun-ichi Hanna
Chemstry Letters Vol. 47 ( Number ) 2018.4
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Bilayered crystalline organic semiconductors for solution-processed OFET asymmetrically-substituted smectic liquid crystal of benzo[1, 2-b:4, 5-b']dithiophene Derivatives Reviewed
Hao Wu, Hiroaki Iino, Jun-Ichi Hanna
Chemistry Letters 47 ( 4 ) 510 - 513 2018
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Thermally induced bilayered crystals in a solution- processed polycrystalline thin fi lm of phenylterthiophene-based monoalkyl smectic liquid crystals and their e ff ect on FET mobility
Hao Wu, Hiroaki Iino, Jun-ichi Hanna
RSC Advances Vol. 7 ( Number ) 2017.12
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Fabrication of planarly-oriented polycrystalline thin films of smectic liquid crystalline organic semiconductors Reviewed
Yi-Fei Wang, Hiroaki Iino, Jun-ichi Hanna
SOFT MATTER 13 ( 37 ) 6499 - 6505 2017.10
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Planar-orientation polycrystalline thin film of liquid-crystalline organic semiconductor by template-directed self-assembly Reviewed
Yi-Fei Wang, Hiroaki Iino, Jun-ichi l Hanna
APPLIED PHYSICS EXPRESS 10 ( 10 ) 10601 2017.10
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第3章 第1節 液晶性の活用によりプロセス適性を実現した高移動度有機トランジスタ材料
飯野裕明, 半那純一
2017.10
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Solution processed nanogap organic diodes based on liquid crystalline materials
Yi-Fei Wang, Hiroaki Iino, Jun-ichi Hanna
Applied Physics Letters Vol. 111 ( Number 13 ) 2017.9
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Planar-orientation polycrystalline thin film of liquid-crystalline organic semiconductor by template-directed self-assembly
Yi-Fei Wang, Hiroaki Iino, Jun-ichi Hanna
Applied Physics Express Volume 10 ( Number 10 ) 2017.9
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Solution processed nanogap organic diodes based on liquid crystalline materials Reviewed
Yi-Fei Wang, Hiroaki Iino, Jun-ichi Hanna
APPLIED PHYSICS LETTERS 111 ( 13 ) 133301 2017.9
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Fabrication of planarly-oriented polycrystalline thin films of smectic liquid crystalline organic semiconductors
Yi-Fei Wang, Hiroaki Iino, Jun-ichi Hanna
Soft Matter Vol. 13 ( No. 37 ) 2017.8
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Bias-stress characterization of solution-processed organic field-effect transistor based on highly ordered liquid crystals Reviewed
M. Kunii, H. Iino, J. Hanna
APPLIED PHYSICS LETTERS 110 ( 24 ) 243301 2017.6
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Liquid crystal and crystal structures of a phenyl-benzothienobenzothiophene derivative
Hiroaki Iino, Jun-Ichi Hanna
Molecular Crystals and Liquid Crystals Vol. 647 2017.5
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液晶性有機半導体の新展開 Invited Reviewed
飯野裕明, 半那純一
応用物理. 86 ( 4 ) 286 - 293 2017.4
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液晶性有機半導体の新展開
飯野裕明, 半那純一
応用物理 Vol. 86 ( No. 4 ) 2017.4
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液晶物質の有機トランジスタへの展開
飯野裕明, 臼井孝之, 半那純一
液晶 Vol. 21 ( No. 1 ) 2017.1
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Liquid crystalline organic semiconductors for organic transistor applications Reviewed
Hiroaki Iino, Jun-ichi Hanna
POLYMER JOURNAL 49 ( 1 ) 23 - 30 2017.1
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液晶物質の有機トランジスタへの展開 Invited Reviewed
飯野裕明, 臼井孝之, 半那純一
液晶. 21 ( 1 ) 45 - 50 2017.1
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Liquid crystal and crystal structures of a phenyl-benzothienobenzothiophene derivative Reviewed
Hiroaki Iino, Jun-ichi Hanna
MOLECULAR CRYSTALS AND LIQUID CRYSTALS 647 ( 1 ) 37 - 43 2017
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Thermally induced bilayered crystals in a solution-processed polycrystalline thin film of phenylterthiophene-based monoalkyl smectic liquid crystals and their effect on FET mobility Reviewed
Hao Wu, Hiroaki Iino, Jun-ichi Hanna
RSC ADVANCES 7 ( 89 ) 56586 - 56593 2017
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Novel smectic liquid crystals based on benzo[c]cinnoline: their synthesis, mesomorphism, opto- and electro-chemical properties Reviewed
Teng-Zhou Yang, Hiroaki Iino, Jun-ichi Hanna
LIQUID CRYSTALS 44 ( 4 ) 666 - 673 2017
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液晶性有機半導体材料の有機トランジスタへの展開
飯野裕明, 半那純一
電気学会論文誌A（基礎・材料・共通部門誌） Vol. 136 ( No. 11 ) 2016.11
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液晶性有機半導体材料の有機トランジスタへの展開 Invited Reviewed
飯野裕明, 半那純一
電気学会論文誌A（基礎・材料・共通部門誌）. 136 ( 11 ) 671 - 677 2016.11
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Liquid crystalline organic semiconductors for organic transistor applications
Hiroaki Iino, Jun-ichi Hanna
Polymer Journal Vol. 49 ( No. ) 2016.10
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Novel smectic liquid crystals based on benzo[c]cinnoline: their synthesis, mesomorphism, opto- and electro-chemical properties
Teng-Zhou Yang, Hiroaki Iino, Jun-ichi Hanna
Liquid Crystals Vol. 44 ( No. 4 ) 2016.9
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Novel Calamitic Liquid Crystals Based on Electron-deficient Mesogen of Isoquino[8,7-h]isoquinoline: Synthesis, Mesomorphism, and Charge-transport Properties
Teng-Zhou Yang, Hiroaki Iino, Jun-ichi Hanna
CHEM. LETT. Vol. 45 ( No. ) 2016.9
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Novel Calamitic Liquid Crystals Based on Electron-deficient Mesogen of Isoquino[8,7-h]isoquinoline: Synthesis, Mesomorphism, and Charge-transport Properties Reviewed
Tengzhou Yang, Hiroaki Iino, Junichi Hanna
CHEMISTRY LETTERS 45 ( 9 ) 1129 - 1131 2016.9
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Solution-Processed, Low-Voltage Polycrystalline Organic Field-Effect Transistor Fabricated Using Highly Ordered Liquid Crystal With Low-k Gate Dielectric Reviewed
Masafumi Kunii, Hiroaki Iino, Jun-Ichi Hanna
IEEE ELECTRON DEVICE LETTERS 37 ( 4 ) 486 - 488 2016.4
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Solution-Processed, Low-Voltage Polycrystalline Organic Field-Effect Transistor Fabricated Using Highly Ordered Liquid Crystal With Low- k Gate Dielectric
Masafumi Kunii, Hiroaki Iino, Jun-ichi Hanna
IEEE ELECTRON DEVICE LETTERS, Vol. 37 ( No. 4 ) 2016.3
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A New Materials Concept for High Performance Organic Thin Film Transistors Reviewed
Hiroaki Iino, Masafumi Kunii, Jun-ichi Hanna
THIN FILM TRANSISTORS 13 (TFT 13) 75 ( 10 ) 69 - 75 2016
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Liquid crystals for organic transistors Reviewed
Jun-ichi Hanna, Hiroaki Iino
LIQUID CRYSTALS XX 9940 2016
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Liquid crystals for organic thin-film transistors
Hiroaki Iino, Takayuki Usui, Jun-ichi Hanna
Nature Communications Vol. 6 ( No. ) 2015.4
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Liquid crystals for organic thin-film transistors Reviewed
Hiroaki Iino, Takayuki Usui, Jun-ichi Hanna
NATURE COMMUNICATIONS 6 6828 2015.4
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3B12 Polycrystalline thin film transistors of mono alkylated liquid crystalline Ph-BTBT derivatives : dependence of alkyl chain length on processability and characteristics
Iino Hiroaki, Okamura Hisashi, Usui Takayuki, Hanna Jun-ichi
Proceedings of Japanese Liquid Crystal Society Annual meeting 2015 _3B12 - 1_-_3B12-2 2015
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PB69 Making of liquid crystalline material /polymer double layer structure organic transistors by one-step spin-coating
YANO Ryota, IINO Hiroaki, HANNA Jun-ichi
Proceedings of Japanese Liquid Crystal Society Annual meeting 2015 _PB69 - 1_-_PB69-2 2015
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Liquid crystals for high performance organic field effect transistors
Jun-Ichi Hanna, Hiroaki Iino
Proceedings of the International Display Workshops 2 718 - 721 2015
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液晶物質の結晶性有機半導体材料としての有用性とその有機トランジスター応用
飯野裕明
日本液晶学会誌 「液晶」 2014.4
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液晶物質の結晶性有機半導体材料としての有用性とその有機トランジスター応用
飯野裕明
日本液晶学会誌 「液晶」 2014.4
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Charge carrier transport in liquid crystals
Jun-ichi Hanna, Akira Ohno, Hiroaki Iino
Thin Solid Films Vol. 554 ( No. ) 2014.3
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Charge carrier transport in liquid crystals Reviewed
Jun-ichi Hanna, Akira Ohno, Hiroaki Iino
THIN SOLID FILMS 554 58 - 63 2014.3
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High mobility of organic thin film transistor fabricated with a smectic E thin film at room temperature
Iino Hiroaki, Okamura Hisashi, Hanna Jun-Ichi
Proceedings of Japanese Liquid Crystal Society Annual meeting 2014 2C02 2014
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Phase transition, optical and photoconductive properties of bay-substituted benzoporphyrin derivatives
Xu-Ying Liu, Takayuki Usui, Hiroaki Iino, Jun-ichi Hanna
Journal of Materials Chemistry C Vol. 1 ( No. 48 ) 2013.10
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Phase transition, optical and photoconductive properties of bay-substituted benzoporphyrin derivatives Reviewed
Xu-Ying Liu, Takayuki Usui, Hiroaki Iino, Jun-ichi Hanna
JOURNAL OF MATERIALS CHEMISTRY C 1 ( 48 ) 8186 - 8193 2013
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Organic Light-Emitting Diode with Highly Ordered Polycrystalline Thin Film Reviewed
Nakano, K., Kobori, T., Takayashiki, Y., Iino, H., Hanna, J.
Japanese Journal of Applied Physics 52 ( 5 ) 5 - 5 2013
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PB58 Evaluation of Carrier Collection Efficiency of Organic Thin-film Solar Cells with a Calamitic Liquid Crystal
Nakano Kyohei, Usui Takayuki, Takayashiki Yukiko, Iino Hiroaki, Hanna Jun-ichi
Proceedings of Japanese Liquid Crystal Society Annual meeting 2013 _PB58 - 1_-_PB58-2 2013
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3b15 High mobility over 10 cm^2/Vs of organic polycrystalline thin film transistor using liquid crystalline organic-semiconductor
Iino Hiroaki, Usui Takayuki, Hanna Jun-ichi
Proceedings of Japanese Liquid Crystal Society Annual meeting 2013 _3b15 - 1_-_3b15-2 2013
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Organic Light Emitting Diode with Highly Ordered Polycrystalline Thin Film
Kyohei Nakano, Takeo Kobori, Yukiko Takayashiki, Hiroaki Iino, Jun-ichi Hanna
Japanese Journal of Applied Physics Vol. 52 ( No. 5 ) 2013
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液晶薄膜を利用した有機多結晶薄膜の作製とそのトランジスタ応用
飯野裕明
応用物理学会 有機分子・バイオエレクトロニクス分科会誌 2012.11
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液晶薄膜を利用した有機多結晶薄膜の作製とそのトランジスタ応用
飯野裕明
応用物理学会 有機分子・バイオエレクトロニクス分科会誌 2012.11
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High Uniformity and High Thermal Stability of Solution-Processed Polycrystalline
Hiroaki Iino, Takeo Kobori, Jun-ichi Hanna
Japanese Journal of Applied Physics Vol. 51 ( No. ) 2012.11
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High Uniformity and High Thermal Stability of Solution-Processed Polycrystalline Thin Films by Utilizing Highly Ordered Smectic Liquid Crystals Reviewed
Hiroaki Iino, Takeo Kobori, Jun-ichi Hanna
JAPANESE JOURNAL OF APPLIED PHYSICS 51 ( 11 ) 11PD02 2012.11
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Self-Organization in Bulk Heterojunction Solar Cells with Small Molecules
Kyohei Nakano, Takayuki Usui, Hiroaki Iino, Yukiko Takayashiki, Jun-ichi Hanna
Applied Physics Express 5 2012.10
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Liquid Crystals as an Organic Semiconductor for Printed Electronics
Jun-ichi Hanna, Hiroaki Iino
Journal of the Imaging Society of Japan Vol. 51 ( No. 5 ) 2012.10
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Liquid Crystals as an Organic Semiconductor for Printed Electronics Reviewed
Jun-ichi Hanna, Hiroaki Iino
Journal of the Imaging Society of Japan. 51 ( 5 ) 531 - 536 2012.10
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Improved thermal stability in organic FET fabricated with a soluble BTBT derivative Reviewed
Hiroaki Iino, Takeo Kobori, Jun-ichi Hanna
JOURNAL OF NON-CRYSTALLINE SOLIDS 358 ( 17 ) 2516 - 2519 2012.9
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Improved thermal stability in organic FET fabricated with a soluble BTBT derivative
Hiroaki Iino, Takeo Kobori, Jun-ichi Hanna
Journal of Non-Crystalline Solids Vol. 358 ( No. ) 2012.4
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High Thermal Stability and High Performance in OFETs Fabricated with Smectic LC Materials Reviewed
Jun-ichi Hanna, Hiroaki Iino
IDW/AD '12: PROCEEDINGS OF THE INTERNATIONAL DISPLAY WORKSHOPS, PT 1 19 169 - 172 2012
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Highly thermally-stable ofets fabricated with liquid crystalline organic semiconductors
Hiroaki Iino, Takayuki Usui, Takeo Kobori, Jun-Ichi Hanna
Digest of Technical Papers - SID International Symposium 43 ( 1 ) 497 - 500 2012
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Self-Organization in Bulk Heterojunction Solar Cells with Small Molecules Reviewed
Nakano, K., Usui, T., Iino, H., Takayashiki, Y., Hanna, J.
Applied Physics Express 5 ( 11 ) 3 - 3 2012
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Charge Injection Enhanced by Guest Material in Molecularly Doped Liquid Crystalline Thin Films Reviewed
Nakano, K., Iino, H., Usui, T., Takayashiki, Y., Hanna, J.
Japanese Journal of Applied Physics 51 ( 1 ) 5 - 5 2012
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Charge Injection Enhanced by Guest Material in Molecularly Doped Liquid Crystalline Thin Films
Kyohei Nakano, Hiroaki Iino, Takayuki Usui, Yukiko Takayashiki, Jun-ichi Hanna
Japanese Journal of Applied Physics Vol. 51 ( No. 1 ) 2011.12
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液晶性有機半導体を用いた多結晶薄膜の作製とトランジスタへの応用
飯野裕明, 半那純一
応用物理学会 有機分子・バイオエレクトロニクス分科会誌 2011.5
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Liquid crystalline thin films as a precursor for polycrystalline thin films aimed at field effect transistors
Hiroaki Iino, Jun-ichi Hanna
J. Appl. Phys. Vol. 109 ( No. ) 2011.4
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Liquid crystalline thin films as a precursor for polycrystalline thin films aimed at field effect transistors Reviewed
Hiroaki Iino, Jun-ichi Hanna
JOURNAL OF APPLIED PHYSICS 109 ( 7 ) 74505 - 74505 2011.4
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Availability of Liquid Crystallinity in Solution Processing for Polycrystalline Thin Films Reviewed
Hiroaki Iino, Jun-ichi Hanna
ADVANCED MATERIALS 23 ( 15 ) 1748 - + 2011.4
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Bulk Mobility of Polycrystalline Thin Films of Quaterthiophene Derivatives
Kyohei Nakano, Hiroaki Iino, Takayuki Usui, Jun-ichi Hanna
Applied Physics Letters Vol. 98 2011.3
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Bulk mobility of polycrystalline thin films of quaterthiophene derivatives Reviewed
Kyohei Nakano, Hiroaki Iino, Takayuki Usui, Jun-ichi Hanna
APPLIED PHYSICS LETTERS 98 ( 10 ) 103302 - 103302 2011.3
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Availability of Liquid Crystallinity in Solution Processing for Polycrystalline Thin Films
Hiroaki Iino, Jun-ichi Hanna
Adv. Mater. Vol. 23 ( No. ) 2011.2
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Liquid Crystalline Materials for Organic Polycrystalline Field Effect Transistors Reviewed
Hiroaki Iino, Jun-Ichi Hanna
MOLECULAR CRYSTALS AND LIQUID CRYSTALS 542 237 - 243 2011
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Liquid Crystalline Materials for Organic Polycrystalline Field Effect Transistors
Hiroaki Iino, Jun-ichi Hanna
Mol. Cryst. Liq. Cryst. Vol. 542 ( No. ) 2011
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カラムナー相における電荷輸送
飯野裕明, 半那純一
日本液晶学会誌 「液晶」 Vol. 13 ( No. 2 ) 2009.4
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Electronic conduction in nematic phase of small molecules Reviewed
Keiji Tokunaga, Yukiko Takayashiki, Hiroaki Iino, Jun-ichi Hanna
PHYSICAL REVIEW B 79 ( 3 ) 033201 - 33201 2009.1
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Electronic conduction in nematic phase of small molecules
Keiji Tokunaga, Yukiko Takayashiki, Hiroaki Iino, Jun-ichi Hanna
PHYSICAL REVIEW B Vol. 79 ( No. 3 ) 2009.1
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One-Dimensional to Three-Dimensional Electronic Conduction in Liquid Crystalline Mesophases Reviewed
Keiji Tokunaga, Yukiko Takayashiki, Hiroaki Iino, Jun-ichi Hanna
MOLECULAR CRYSTALS AND LIQUID CRYSTALS 510 250 - 258 2009
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Charge Carrier Transport Properties in Liquid Crystalline 2-Phenylbenzothiazole Derivatives Reviewed
Keiji Tokunaga, Hiroaki Iino, Jun-ichi Hanna
MOLECULAR CRYSTALS AND LIQUID CRYSTALS 510 241 - 249 2009
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Polycrystalline Organic TFT Fabricated by Solution Process Using Liquid Crystalline Material Reviewed
Hiroaki Iino, Jun-ichi Hanna
MOLECULAR CRYSTALS AND LIQUID CRYSTALS 510 259 - 267 2009
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Fabrication of polycrystalline thin films of liquid crystalline materials by solution process and its application to OFETs
Hiroaki Iino, Jun-Ichi Hanna
Materials Research Society Symposium Proceedings 1091 44 - 49 2008
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Ambipolar carrier transport in terphenyl derivative Reviewed
Yukiko Takayashiki, Hiroaki Iino, Teppei Shimakawa, Jun-ichi Hanna
MOLECULAR CRYSTALS AND LIQUID CRYSTALS 480 295 - 301 2008
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TOF and TFT mobilities in polycrystalline thin films of liquid crystalline material Reviewed
Hiroaki Iino, Jun-ichi Hanna
ORGANIC FIELD-EFFECT TRANSISTORS VII AND ORGANIC SEMICONDUCTORS IN SENSORS AND BIOELECTRONICS 7054 2008
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Reinvestigation of carrier transport properties in liquid crystalline 2-phenylbenzothiazole derivatives Reviewed
Keiji Tokunaga, Hiroaki Iino, Jun-ichi Hanna
JOURNAL OF PHYSICAL CHEMISTRY B 111 ( 42 ) 12041 - 12044 2007.10
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Reinvestigation of Carrier Transport Properties in Liquid Crystalline 2-Phenylbenzothiazole Derivatives
K. Tokunaga, H. Iino, J. Hanna
J. Phys. Chem. B Vol. 111 ( No. 42 ) 2007.10
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Availability of liquid crystalline molecules for polycrystalline organic semiconductor thin films Reviewed
Hiroaki Iino, Jun-Ichi Hanna
Japanese Journal of Applied Physics, Part 2: Letters 45 ( 33-36 ) L867 - L870 2006.8
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Hopping conduction in the columnar liquid crystal phase of a dipolar discogen Reviewed
Hiroaki Iino, Jun-ichi Hanna, Richard J. Bushby, Bijan Movaghar, Benjamin J. Whitaker
JOURNAL OF APPLIED PHYSICS 100 ( 4 ) 043716 - 43716 2006.8
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Hopping conduction in the columnar liquid crystal phase of a dipolar discogen
Hiroaki Iino, Jun-ichi Hanna, Richard J. Bushby, Bijan Movaghar, Benjamin J. Whitaker
J. Appl. Phys. 100 ( 4 ) 043716 - 043716 2006.8
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Availability of Liquid Crystalline Molecules for Polycrystalline Organic Semiconductor Thin Films
Hiroaki Iino, Jun-ichi Hanna
Jpn. J. Appl. Phys. 45 ( 33 ) 2006.8
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Study on quality polycrystalline organic semiconductor thin films with liquid crystalline molecules– Fabrication and characterization of the polycrystalline thin films –(液晶性物質を用いた高品質な有機半導体多結晶薄膜の作製と評価)
Hiroaki Iino
2006.3
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Fast electron transport in discotic columnar phases of triphenylene derivatives Reviewed
H Iino, J Hanna, D Haarer, RJ Bushby
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 45 ( 1B ) 430 - 433 2006.1
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Fast Electron Transport in Discotic Columnar Phases of Triphenylene Derivatives
H. Iino, J. Hanna, D. Haarer, R. J. Bushby
Jpn. J. Appl. Phys. 45 ( 1B ) 2006.1
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Availability of liquid crystalline materials for organic polycrystalline semiconductor thin films
Hiroaki Iino, Jun-Ichi Hanna
Materials Research Society Symposium Proceedings 965 53 - 58 2006
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Anisotropy of carrier mobility in calamitic liquid crystalline semiconductors
Yoshizawa Jin, Iino Hiroaki, Takayashiki Yukiko, Hanna Jun-ichi
Proceedings of Japanese Liquid Crystal Society Annual meeting 2006 107 - 107 2006
-
Mesophases and carrier transport properties of p-terphenyl derivatives
Takayashiki Yukiko, Shimakawa Teppei, Iino Hiroaki, Hanna Jun-ichi
Proceedings of Japanese Liquid Crystal Society Annual meeting 2006 112 - 112 2006
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Availability of liquid crystalline materials for organic polycrystalline semiconductors
Iino Hiroaki, Hanna Jun-ichi
Proceedings of Japanese Liquid Crystal Society Annual meeting 2006 111 - 111 2006
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Hole mobility and lifetime in a smectic liquid crystalline photoconductor of a 2-phenylnaphthalene derivative Reviewed
H Iino, A Ohno, JI Hanna
JOURNAL OF CHEMICAL PHYSICS 123 ( 24 ) 244701 - 244701 2005.12
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Electronic and ionic transports for negative charge carriers in smectic liquid crystalline photoconductor Reviewed
H Iino, JI Hanna
JOURNAL OF PHYSICAL CHEMISTRY B 109 ( 47 ) 22120 - 22125 2005.12
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Ambipolar charge carrier transport in liquid crystals
Hiroaki Iino, Jun-ichi Hanna
Opto-Electronics Review Vol. 13 ( No. 4 ) 2005.12
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Hole mobility and lifetime in a smectic liquid crystalline photoconductor of a 2-phenylnaphthalene derivative
H. Iino, A. Ohno, J. Hanna
J. Chem. Phys. 123 ( 24 ) 244701 - 244701 2005.12
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Electronic and ionic carrier transport in discotic liquid crystalline photoconductor Reviewed
H Iino, J Hanna, D Haarer
PHYSICAL REVIEW B 72 ( 19 ) 193203 - 193203 2005.11
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High electron mobility of 0.1 cm(2) V-1 s(-1) in the highly ordered columnar phase of hexahexylthiotriphenylene Reviewed
H Iino, Y Takayashiki, J Hanna, RJ Bushby, D Haarer
APPLIED PHYSICS LETTERS 87 ( 19 ) 192105 - 192105 2005.11
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High electron mobility of 0.1 cm2V-1s-1 in the highly ordered columnar phase of hexahexylthiotriphenylene
Hiroaki Iino, Yukiko Takayashiki, Jun-ichi Hanna, Richard J. Bushby, Dietrich Haarer
Appl. Phys. Lett. Vol. 87 ( No. 19 ) 192105 - 192105 2005.11
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Electronic and ionic transports for negative charge carriers in a smectic liquid crystalline photoconductor
H. Iino, J. Hanna
J. Phys. Chem. B 109 ( 47 ) 2005.11
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Electronic and ionic transports for negative charge carriers in a smectic liquid crystalline photoconductor
Hiroaki Iino, Jun-ichi Hanna
J. Phys. Chem. B Vol. 109 ( No. 47 ) 2005.11
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Electronic and ionic carrier transports in discotic liquid crystalline photoconductors
Hiroaki Iino, Jun-ichi Hanna, Dietrich Haarer
Phys. Rev. B Vol. 72 ( No. 19 ) 193203 - 193203 2005.11
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Fast Ambipolar Carrier Transport and Easy Homeotropic Alignment in a Metal-Free Phthalocyanine Derivative
H. Iino, Y. Takayashiki, J. Hanna, R. J. Bushby
Jpn. J. Appl. Phys. 44 ( 43 ) 2005.10
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Very high time-of-flight mobility in the columnar phases of a discotic liquid crystal Reviewed
H Iino, J Hanna, RJ Bushby, B Movaghar, BJ Whitaker, MJ Cook
APPLIED PHYSICS LETTERS 87 ( 13 ) 132102 2005.9
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Very high time-of-flight mobility in the columnar phases of a discotic liquid crystal
H. Iino, J. Hanna, R. J. Bushby, B. Movaghar, B. J. Whitaker, M. J. Cook
Appl. Phys. Lett. 87 ( 13 ) 132102 - 132102 2005.9
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Fast electron transport in discotic columnar phase of triphenylene derivative, hexabutyloxytriphenylene
H. Iino, J. Hanna, C. Jager, D. Haarer
Mol. Cryst. Liq. Cryst. 436 ( No. ) 2005.7
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Charge carrier transport properties in polymer liquid crystals containing oxadiazole and amine moieties in the same side chain Reviewed
M Kawamoto, H Mochizuki, T Ikeda, H Iino, J Hanna
JOURNAL OF PHYSICAL CHEMISTRY B 109 ( 19 ) 9226 - 9230 2005.5
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Charge Carrier Transport Properties in Polymer Liquid Crystals Containing Oxadiazole and Amine Moieties in the Same Side Chain
M. Kawamoto, H. Mochizuki, T. Ikeda, H. Iino, J. Hanna
J. Phys. Chem. B 109 ( 19 ) 2005.4
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Fast electron transport in discotic liquid crystalline semiconductors Reviewed
Hiroaki Iino, Yukiko Takayashiki, Jun-Ichi Hanna, Richard J. Bushby, Dietrich Haarer
Proceedings of SPIE - The International Society for Optical Engineering 5940 1 - 10 2005
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Ambipolar charge carrier transport in liquid crystals Reviewed
H Iino, J Hanna
OPTO-ELECTRONICS REVIEW 13 ( 4 ) 295 - 302 2005
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Fast ambipolar carrier transport and easy homeotropic alignment in a metal-free phthalocyanine derivative Reviewed
H Iino, Y Takayashiki, J Hanna, RJ Bushby
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS 44 ( 42-45 ) L1310 - L1312 2005
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Fast electron transport in discotic columnar phase of triphenylene derivative, hexabutyloxytriphenylene Reviewed
H Iino, J Hanna, C Jager, D Haarer
MOLECULAR CRYSTALS AND LIQUID CRYSTALS 436 1171 - 1178 2005
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Analysis of trap distribution for smectic liquid crystals using time of flight spectroscopy Reviewed
Akira Ohno, Hiroaki Iino, Kensuke Kurotaki, Akihide Haruyama, Jun-Ichi Hanna, David H. Dunlap
Proceedings of SPIE - The International Society for Optical Engineering 5937 1 - 10 2005
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Charge carrier lifetimes in a smectic liquid crystalline photoconductor of a 2-phenylnaphthalene derivative
Hiroaki Iino, Jun-Ichi Hanna
Materials Research Society Symposium - Proceedings 771 273 - 278 2003
MISC
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Modeling of Photo-Carrier Generation Controlled by Molecular Orientation and Position
大野玲, 半那純一, 飯野裕明
日本写真学会誌 86 ( 3 ) 2023
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Carrier Transport in Liquid Crystals with Static and Dynamic Disorder
大野玲, 半那純一, 飯野裕明
日本液晶学会討論会講演予稿集(CD-ROM) 2023 2023
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Fabrication of charge transfer complex by thermal diffusion of accepter molecules in liquid crystalline organic semiconductors and their n-channel organic transistor operation
高丸俊, 半那純一, 飯野裕明
応用物理学会秋季学術講演会講演予稿集(CD-ROM) 81st 2020
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Relationship between electron transfer and C-factor of Gaussian Disorder Model in organic semiconductors
大野玲, 新田武父, 高屋敷由紀子, 半那純一, 飯野裕明
応用物理学会春季学術講演会講演予稿集(CD-ROM) 67th 2020
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スメクティックE相での電子輸送におけるポーラロンバインディングとエネルギーのディスオーダーの競合
大野玲, 新田武父, 半那純一, 飯野裕明
日本液晶学会討論会講演予稿集(CD-ROM) 2020 2020
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液晶性有機半導体Ph-BTBT-10を用いたトップコンタクト型有機トランジスタのドーピングによる接触抵抗低減
高丸俊, 半那純一, 飯野裕明
応用物理学会秋季学術講演会講演予稿集(CD-ROM) 80th 2019
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核トンネリングを考慮した有機半導体における移動度の負の温度依存性の起源
大野玲, 高屋敷由紀子, 新田武父, 半那純一, 飯野裕明
応用物理学会春季学術講演会講演予稿集(CD-ROM) 66th 2019
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液晶性有機トランジスタ材料の開発 (特集 有機薄膜トランジスタ・新規有機半導体材料の開発)
半那 純一, 飯野 裕明
Molecular electronics and bioelectronics = 応用物理学会,有機分子・バイオエレクトロニクス分科会会誌 28 ( 4 ) 210 - 225 2017.11
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液晶SmE相による矢はず構造の形成と有機半導体の電荷輸送特性
大野玲, 新田武父, 高屋敷由紀子, 飯野裕明, 半那純一
応用物理学会春季学術講演会講演予稿集(CD-ROM) 64th 2017
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125 - 128 2017
-
CI-4-4 High Quality Organic Transistors with Liquid Crystalline Organic-Semiconductors
Iino Hiroaki, Hanna Jun-ichi
Proceedings of the IEICE General Conference 2016 ( 2 ) "SS - 47"-"SS-48" 2016.3
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有機半導体の構造秩序が与えるエネルギーのディスオーダーと電荷輸送
大野玲, 新田武父, 高屋敷由紀子, 飯野裕明, 半那純一
応用物理学会春季学術講演会講演予稿集(CD-ROM) 63rd 2016
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Carrier Transport Properties in Crystal E Phase of Liquid Crystalline Materials
221 - 224 2016
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229 - 232 2016
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233 - 236 2016
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液晶性有機半導体における構造秩序性と相関のあるディスオーダーモデル
大野玲, 新田武父, 高屋敷由紀子, 飯野裕明, 半那純一
応用物理学会春季学術講演会講演予稿集(CD-ROM) 62nd 2015
-
IINO Hiroaki, USUI Takayuki, HANNA Jun-ichi
ITE Technical Report 38 ( 12 ) 15 - 20 2014.3
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構造秩序性もつ有機半導体のCorrelated Disorder Modelの構築とその電荷輸送の温度依存性
大野玲, 新田武父, 高屋敷由紀子, 飯野裕明, 半那純一
応用物理学会秋季学術講演会講演予稿集(CD-ROM) 75th 2014
-
Direct Patterning of OFET Materials by PDMS-stamp for printed electronics
185 - 188 2014
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181 - 184 2014
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253 - 256 2013
-
261 - 264 2013
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棒状液晶物質の電荷輸送-側鎖の極性効果
高屋敷由紀子, 大野玲, 飯野裕明, 半那純一
応用物理学会秋季学術講演会講演予稿集(CD-ROM) 74th 2013
-
PA51 Enhanced charge injection in Ferroelectric Liquid crystals and its device application
Higuchi Miho, Hoshi Shotaro, Kida Takahiro, Takayashiki Yukiko, Iino Hiroaki, Hanna Jun-ichi
( 2012 ) "PA51 - 1"-"PA51-2" 2012.8
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2b08 Fabrication of uniform and high thermal stabile polycrystalline thin film using highly ordered liquid crystal phase and its FET application
Iino Hiroaki, Usui Takayuki, Kobori Takeo, Hanna Jun-ichi
( 2012 ) "2b08 - 1"-"2b08-2" 2012.8
-
Effect of Thermal Annealing on Solar Cells with Liquid Crystalline Material
2012 239 - 242 2012
-
2012 243 - 246 2012
-
Luminance Improvement in Electrochemiluminescent Cells by Balanced Concentration of Luminant Ions
2012 231 - 234 2012
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液晶性有機半導体を用いた多結晶薄膜の作製とトランジスタへの応用
飯野 裕明, 半那 純一
Molecular electronics and bioelectronics 22 ( 2 ) 123 - 126 2011.5
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Marcus式を取り入れたディスオーダーモデルによる有機半導体の電荷輸送特性の解析とエネルギーのディスオーダーの起源
大野玲, 大野玲, 河原紘一, 高屋敷由紀子, 高屋敷由紀子, 飯野裕明, 飯野裕明, 半那純一, 半那純一
応用物理学会学術講演会講演予稿集(CD-ROM) 72nd 2011
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2011 321 - 324 2011
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Carrier injection in thin film of liquid crystalline semiconductor
2011 333 - 336 2011
-
TFT and bulk mobility in liquid crystalline organic materials
2009 201 - 203 2009
-
カラムナー相における電荷輸送
半那純一, 飯野裕明
日本液晶学会誌 「液晶」 13 ( 2 ) 133 - 143 2009
-
Fabrications of polycyrstalline thin film transistors with liquid crystalline organic-semiconductors
Imaging Conference Japan fall meeting 2008 89 - 92 2008
-
PF05 High electron mobilities (over 0.1cm^2/Vs) in discotic columnar phases
Iino Hiroaki, Takayashiki Yukiko, Hanna Jun-ich, Haarer Dietrich, Bushby Richard J.
( 2005 ) 447 - 448 2005.9
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1A03 Charge carrier transport in smectic mesophases of dialkyl-2-phenylnaphthalene derivatives
Takayashiki Yukiko, Iino Hiroaki, Hanna Jun-ichi
( 2005 ) 3 - 4 2005.9
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Carrier transport in a smectic liquid crystal having a biphenyl core
A. Ohno, H. Iino, A. Haruyama, K, Kurotaki, D. H. Dunlap, J. Hanna
SPIE Europe 5947 - 14 2005
-
Transient photocurrent of each domain in polydomain texture of discotic columnar plastic phase
IINO Hiroaki, Funahashi Masahiro, Hanna Jun-ichi
Proceedings of Japanese Liquid Crystal Society Annual meeting 2004 88 - 89 2004
-
スメクテック液晶相における負キャリア伝導のダイナミックス
大野玲, 飯野裕明, 半那純一
第51回応用物理学関係連合講演会 講演予稿集 No.0 1419 2004
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Triphenylene誘導体Discotic相における高速の電子輸送特性、2003年日本液晶学会討論会講演予稿集、ｐｐ193-194 (2003)
飯野裕明, 舟橋正浩, 半那純一, ClaussJaeger DietrichHaarer
2003年日本液晶学会討論会講演予稿集 193 - 194 2003
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3A03 Dynamics of electron and impurity ion transport in smectic liquid crystal
Ohno A., Iino Hiroaki, Hanna J.
Proceedings of Japanese Liquid Crystal Society Annual meeting 2003 191 - 192 2003
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過渡光電流測定を利用した液晶性有機半導体におけるキャリア寿命の評価
飯野裕明, 大野玲, 舟橋正浩, 半那純一
日本物理学会講演概要集 582 ( 2 ) 765 - 765 2003
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、Discotic液晶H4Tにおける高速の電子輸送特性
飯野裕明, 舟橋正浩, 半那純一, ClaussJaeger DietrichHaarer
第50回応用物理学関係連合会学術講演会予稿集 1351 - 1351 2003
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Discotic液晶H4Tの結晶相における電荷輸送
飯野裕明, 大野玲, 舟橋正浩, 半那純一
第64回応用物理学会学術講演会予稿集 1147 - 1147 2003
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液晶性有機半導体(8-PNP-O12)における負バイアス下での光伝導特性
飯野裕明, 舟橋正浩, 半那純一
第４8回応用学関係連合講演会予稿集 1233 - 1233 2001
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液晶性有機半導体(8-PNP-O12)における光伝導特性に与える酸素の影響
飯野裕明, 舟橋正浩, 半那純一
JapanHardcopy'01 177 - 180 2001
Presentations
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Fabrication of Organic Transistors and Organic Photo Detectors with High Speed Blade-Coated Active Layer Using Liquid Crystallinity International conference
Issei Suzuki, Hiroaki Iino
17th European Conference on Molecular Electronics 2025.9
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Switching phenomena from p-channel to n-channel operation in liquid crystalline organic transistors by short time thermal annealing International conference
Hiroaki Iino, Shun Takamaru, Tatsuki Kanebako
17th European Conference on Molecular Electronics 2025.9
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Fabrication of n-channel organic transistor and invertor using liquid crystalline organic semiconductor International conference
Tatsuki Kanebako, Shun Takamaru, Hiroaki Iino
The 15th International Conference on Flexible and Printed Electronics 2025.9
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Fabrication of Flexible Organic Thin Film Transistors Using Liquid Crystalline Organic Semiconductor Ph-BTBT-10 and Application to Image Sensor Pixels International conference
Issei Suzuki, Hiroaki Iino
The 15th International Conference on Flexible and Printed Electronics 2025.9
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Novel method for reducing contact resistance using liquid crystal properties independent of electrode material International conference
Hiroki Nakano, Hiroaki Iino
The 15th International Conference on Flexible and Printed Electronics 2025.9
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Evaluation of Orientation and Ordering of Liquid Crystal Molecules in Microspace
Issei Suzuki, Hiroaki Iino
2025 International Conference on Solid State Devices and Materials 2025.9
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Elucidation of the charge carrier injection enhancement mechanism in liquid crystal organic semiconductors utilizing electric-field-induced dopant sweeping
Hiroki Nakano, Hiroaki Iino
2025 International Conference on Solid State Devices and Materials 2025.9
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強誘電性液晶とフレキシブル基板による圧電センサ性能の向上
RUITONG LIU, 都甲康夫, 高橋泰樹, 飯野裕明
2025年日本液晶学会討論会 2025.9
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マイクロピラー壁界面における円盤状液晶分子の配向秩序性評価
鈴木一世, 飯野裕明
2025年日本液晶学会討論会 2025.9
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微細空間領域における円盤状液晶分子の配向と秩序の評価
鈴木 一世, 飯野 裕明
第86回応用物理学会秋季学術講演会 2025.9
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両極性アルキニルボラン化合物蒸着膜の電子構造と発光特性
三柴 健太, 永田 晃基, 田中 裕也, 飯野 裕明
第86回応用物理学会秋季学術講演会 2025.9
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液晶相における不純物の電界はき寄せ条件による電流密度制御
中野 博貴, 飯野 裕明
第86回応用物理学会秋季学術講演会 2025.9
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液晶性を用いた高速ブレードコートによるバルクヘテロ接合膜の形成と有機光検出器特性評価
鈴木 一世, 飯野 裕明
第86回応用物理学会秋季学術講演会 2025.9
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液晶性を活用した有機半導体の高速製膜およびデバイス応用
鈴木 一世, 飯野 裕明
令和7年 電気学会 基礎・材料・共通部門大会 2025.9
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液晶性有機半導体を用いた有機フォトダイオード
飯野 裕明, Kabir Shahriar, 佐藤 健太
令和7年 電気学会 基礎・材料・共通部門大会 2025.9
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N-channel operation of organic transistor with charge transfer complex thin films of Ph-BTBT-10 and F4-TCNQ fabricated by thermal anneal International conference
Hiroaki Iino, Shun Takamaru, Tatsuki Kanebako
2025 KJF-International Conference on Organic Materials for Electronics and Photonics 2025.8
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Crystallinity and Organic Transistor Characteristics of Ph-BTBT-10 Ultra-Thin Films Fabricated by Solution Process International coauthorship
Haruka YAMADA, Issei SUZUKI, Yves GEERTS, Michele SFERRAZZA, Hiroaki IINO
The 135th Annual Conference of the Imaging Society of Japan 2025.6
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Diode Characteristic of Liquid Crystalline Terthiophene Derivative by Electric Field Sweeping of Dopant Molecules
Satoshi ONO, Hiroki NAKANO, Hiroaki IINO
The 135th Annual Conference of the Imaging Society of Japan 2025.6
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Mechanism of Charge Carrier Injection Enhancement in Liquid Crystalline Organic Semiconductors by Dopant Molecules Swept With Electric Field
Hiroki NAKANO, Hiroaki IINO
The 135th Annual Conference of the Imaging Society of Japan 2025.6
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High Quality Organic Semiconductor Materials Utilizing Self-Organization of Liquid Crystals Invited
Hiroaki IINO
The 135th Annual Conference of the Imaging Society of Japan 2025.6
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Organic Semiconductor Devices Fabricated by High-Speed Blade-Coating Using Liquid Crystallinity
Issei SUZUKI, Hiroaki IINO
The 135th Annual Conference of the Imaging Society of Japan 2025.6
-
Stability of Organic Photodiodes Using Liquid Crystalline Diketopyrrolopyrrole Derivative
Kazuki HIGASHI, Kenta SATO, Hiroaki IINO
The 135th Annual Conference of the Imaging Society of Japan 2025.6
-
Nature of imaging materials and technology and its future Invited
Hiroaki Iino
2025.6
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液晶性有機半導体の電界はき寄せ工程前後における接触抵抗と注入障壁の評価
中野 博貴, 飯野 裕明
令和7年 電気学会 基礎・材料・共通部門大会 2025.9
-
Fast Electron Transport in Triphenylene Derivatives of H4T, H5T, and HHTT
Third International Conference on Molecular Electronics and Bioelectronics (M&BE3) 2005
-
Fast ambipolar carrier transport of mobility over 0.2cm2/Vs in a columnar phase of phthalocyanine liquid crystal
2005
-
Fast electron transport in discotic liquid crystalline semiconductors
SPIE-The International Society for Optical Engineering 2005
-
液晶性物質の結晶相における電荷輸送特性
2005年度写真学会年次大会 2005
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Fast Electron Transport in Triphenylene Derivatives of H4T, H5T, and HHTT
Third International Conference on Molecular Electronics and Bioelectronics (M&BE3) 2005
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フタロシアニン液晶カラムナー相における0.2cm2/Vsを超える両極性電荷輸送
第52回応用物理学関係連合講演会 2005
-
High electron mobilities (over 0.1cm2/Vs) in discotic columnar phases
2005
-
液晶性物質の多結晶有機半導体としての有用性(2.棒状液晶)
第53回応用物理学会関係連合講演会 2006
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液晶性物質の多結晶有機半導体としての有用性(1.円盤状液晶)
第53回応用物理学会関係連合講演会 2006
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Electronic and Ionic Conduction in Liquid Crystals
The 5th International Discussion & Conference on Nano Interface Controlled Electronic Devices (IDC-NICE 2005) 2006
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Availability of Liquid Crystalline Materials for Organic Polycrystalline Semiconductor Thin Films
2006 MRS Fall Meeting 2006
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Availability of Liquid Crystalline Materials for Organic Polycrystalline Semiconductor Thin Films
2006 MRS Fall Meeting 2006
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p-Terphenyl 誘導体の液晶性と電荷輸送特性
2006年日本液晶学会討論会 2006
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有機多結晶半導体としての液晶物質の有用性
2006年日本液晶学会討論会 2006
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棒状液晶性有機半導体における電荷移動度の異方性
2006年日本液晶学会討論会 2006
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Ambipolar fast charge carrier transport in discotic and calamitic liquid crystals
21st International Liquid Crystal Conference 2006
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液晶性物質の有機半導体多結晶薄膜としての有用性
2006年度 日本写真学会年次大会 2006
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Electronic and Ionic Conduction in Liquid Crystals
The 5th International Discussion & Conference on Nano Interface Controlled Electronic Devices (IDC-NICE 2005) 2006
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Solution-processed polycrystalline thin films of liquid crystals and their application to organic TFTs
4th European Conference on Organic Electronics and Related Phenomena 2007
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液晶相におけるナノ凝集構造と電気伝導
2007年電気化学会秋季大会 2007
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Mesophase behaviors and carrier transport properties of p-terphenyl derivatives
Abstracts of The Japanese Liquid Crystal Society Annual Meetings 2006 2006
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Availability of liquid crystalline materials for organic polycrystalline semiconductors
Abstracts of The Japanese Liquid Crystal Society Annual Meetings 2006 2006
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Anisotropy of carrier mobility in calamitic liquid crystalline semiconductors
Abstracts of The Japanese Liquid Crystal Society Annual Meetings 2006 2006
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Ambipolar fast charge carrier transport in discotic and calamitic liquid crystals
21st International Liquid Crystal Conference 2006
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Availability of organic polycrystalline semiconductors with liquid crystalline material
Journal of The Society of Photographic Science and Technology of Japan 2006
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Availability of organic polycrystalline semiconductors with calamitic liquid crystalline molecules
Extended Abstracts (The 53rd Spring Meeting, 2006); The Japan Society of Applied Physics and Related Societies 2006
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Availability of organic polycrystalline semiconductors with discotic liquid crystalline molecules
Extended Abstracts (The 53rd Spring Meeting, 2006); The Japan Society of Applied Physics and Related Societies 2006
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Fabrication of polycrystalline thin film via liquid crystalline phase and its application to organic TFT
Abstracts of The Japanese Liquid Crystal Society Annual Meetings 2006 2007
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Electric conductions in nano-aggregated structures of liquid crystal phases
The Electrochemical Society of Japan Autumn Meetings 2007 2007
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Re-investigation of carrier transport properties in 2-Phenylbenzothiazole derivatives
Abstracts of The Japanese Liquid Crystal Society Annual Meetings 2006 2007
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2-Phenylbenzothiazole 誘導体における電子伝導の再検討
2007年日本液晶学会討論会 2007
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液晶相を利用した多結晶薄膜の作製と有機TFTへの応用
2007年日本液晶学会討論会 2007
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液晶性フタロシアニンにおける電荷輸送特性
日本画像学会年次大会(通算99回) 2007
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液晶材料の電荷輸送特性
2006年度 日本写真学会年次大会 2007
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D.C.バイアス印加によるPECVD-TEOSゲート酸化膜の特性改善
第54回応用物理学会関係連合講演会 2007
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相分離を利用した低分子液晶性有機半導体とポリマー複合系の電荷輸送特性
第54回応用物理学会関係連合講演会 2007
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フタロシアニン液晶(8H2Pc)の液体相における電荷輸送特性
第54回応用物理学会関係連合講演会 2007
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Solution-processed polycrystalline thin films of liquid crystals and their application to organic TFTs
4th European Conference on Organic Electronics and Related Phenomena 2007
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オリゴチオフェン系液晶性有機半導体におけるバルク移動度とＦＥＴ移動度
日本化学会第89春季年会 2009
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ベンゾチエノベンゾチオフェン(BTBT)系液晶物質の電荷輸送特性
2009年日本液晶学会討論会 2009
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液晶相におけるミクロ相分離を利用した液晶性有機半導体へのチャージドーピング
第70回応用物理学会学術講演会 2009
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相分離を利用した液晶性有機半導体のチャージドーピング
日本画像学会年次大会(通算103回) 2009
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液晶性有機半導体p-ターフェニル誘導体の液晶性と電荷輸送特性
2009年度 日本写真学会年次大会 2009
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Phenylene系液晶物質の合成と液晶性および電荷輸送特性の評価
液晶化学研究会シンポジューム 2009
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ミクロ相分離を利用した液晶性有機半導体のチャージドーピング
液晶化学研究会シンポジューム 2009
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液晶物質における電荷輸送
情報科学用有機材料第142委員会C部会(有機光エレクトロニクス)第33回研究会 2009
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p-Terphenyl誘導体の液晶性と電荷輸送特性
日本化学会第89春季年会 2009
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Liquid Crystals for TFT Applications
2009
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Carrier transport property in poly-crystalline phase of liquid crystalline material
Journal of The Society of Photographic Science and Technology of Japan 2005
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TOF and TFT mobilities in polycrystalline thin films of liquid crystalline materials
SPIE Optics + Photonics 2008 2008
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Carrier Transport Properties in Liquid Crystalline Perylenediimide Derivatives
22nd International Liquid Crystal Conference 2008
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ターチオフェン系液晶物質を用いた TFT の試作と特性評価
第69回応用物理学会学術講演会 2008
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Carrier transport of liquid crystalline phthalocyanine derivative
The 99th Annual Conference of the Imaging Society of Japan 2007
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Charge carrier transport in liquid crystalline materials
2007
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Improvement of PECVD TEOS gate oxide with D.C. bias on the substrate
Extended Abstracts (The 54th Spring Meeting, 2007) The Japan Society of Applied Physics and Related Societies 2007
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Carrier transport properties in composite material of monomer liquid crystalline semiconductor and polymer with phase separated structure
Extended Abstracts (The 54th Spring Meeting, 2007) The Japan Society of Applied Physics and Related Societies 2007
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Charge carrier transports in the liquid phase of a phthalocyanine liquid crystal (8H2Pc)
Extended Abstracts (The 54th Spring Meeting, 2007) The Japan Society of Applied Physics and Related Societies 2007
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液晶性有機半導体を用いた多結晶薄膜トランジスタの作製とその評価
第102回日本画像学会研究討論会 2008
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p-Terphenyl誘導体の液晶性と電荷輸送特性(2)
2008年日本液晶学会討論会 2008
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液晶物質を用いた有機 TFT の作製と評価
2008年日本液晶学会討論会 2008
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Mesophase behaviors and carrier transport properties of p-terphenyl derivatives (2)
Abstracts of The Japanese Liquid Crystal Society Annual Meetings 2008 2008
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Fabrication of organic thin film transistor with a liquid crystalline material
Abstracts of The Japanese Liquid Crystal Society Annual Meetings 2008 2008
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Fabrication and characterization of TFTs with terthiophene liquid Crystal
The 69th Autumn Meeting 2008; The Japan Society of Applied Physics 2008
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TOF and TFT mobilities in polycrystalline thin films of liquid crystalline materials
22nd International Liquid Crystal Conference 2008
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液晶物質を用いた有機TFTの試作
液晶化学研究会シンポジューム 2008
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TOF and TFT mobilities in polycrystalline thin films of liquid crystalline materials
Pan-Pacific Imaging Conference '08 2008
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Fabrication of polycrystalline thin films of liquid crystalline materials by solution process and its application to OFETs
2008 MRS Spring Meeting 2008
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液晶物質における伝導とＴＦＴへの応用
2008
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低分子液晶材料のネマティック相における電子伝導
日本化学会第88春季年会 2008
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液晶相を利用した多結晶薄膜の作製と有機FET への応用
第55回応用物理学関係連合講演会 2008
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Fabrications of polycyrstalline thin film transistors with liquid crystalline organic-semiconductors
Imaging Conference JAPAN 2008 Fall Meeting 2008
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TOF and TFT mobilities in polycrystalline thin films of liquid crystalline materials
SPIE Optics + Photonics 2008 2008
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Carrier Transport Properties in Liquid Crystalline Perylenediimide Derivatives
22nd International Liquid Crystal Conference 2008
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TOF and TFT mobilities in polycrystalline thin films of liquid crystalline materials
22nd International Liquid Crystal Conference 2008
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TOF and TFT mobilities in polycrystalline thin films of liquid crystalline materials
Pan-Pacific Imaging Conference '08 2008
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Fabrication of polycrystalline thin films of liquid crystalline materials by solution process and its application to OFETs
2008 MRS Spring Meeting 2008
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Electronic Conduction in Liquid Crystals and Their Applicaiton to TFTs
2008
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Fabrications of polycrystalline thin films via liquid crystalline phases and their applications to organic FET
(The 55th Spring Meeting, 2008) The Japan Society of Applied Physics and Related Societies 2008
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Charge doping for liquid crystalline organic-semiconductor using micro-phase separation
Imaging Conference JAPAN 2009 2009
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Mesophase Behavior of p-Terphenyl Derivatives and Their Charge Carrier Transport Properties
Journal of The Society of Photographic Science and Technology of Japan 2009
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Carrier transport in liquid crystalline materials
2009
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Mesophase Behavior of p-Terphenyl derivatives and Their Charge Carrier Transport Properties
2009
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Bulk and FET mobilities in liquid crystalline oligothiophene derivatives
2009
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液晶相を有する材料を用いた有機多結晶薄膜の作製とFET 応用（２）―ジアルキルBTBT 誘導体―
第57回応用物理学会関係連合講演会 2010
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液晶相を有する材料を用いた有機多結晶薄膜の作製とFET 応用（１）―オリゴチオフェン誘導体―
第57回応用物理学会関係連合講演会 2010
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BTBT 系液晶性有機半導体の電荷輸送特性
日本化学会第90回春季年会 2010
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Carrier transport properties of Benzothienobenzothiophene(BTBT) liquid crystals
Abstracts of The Japanese Liquid Crystal Society Annual Meetings 2009 2009
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Charge doping in liquid crystalline organic-semiconductor using micro phase separation
The 70th Autumn Meeting 2008; The Japan Society of Applied Physics 2009
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Fabrication of polycrystalline thin films of liquid crystalline materials and their FETapplications (2) -dialkyl BTBT derivative-
Extended Abstracts (The 57th Spring Meeting, 2010) The Japan Society of Applied Physics and Related Societies 2010
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Fabrication of polycrystalline thin films of liquid crystalline materials and their FETapplications (1) -oligothiophene derivatives-
Extended Abstracts (The 57th Spring Meeting, 2010) The Japan Society of Applied Physics and Related Societies 2010
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Carrier transport properties in BTBT derivatives of liquid crystalline organic-semiconductor
2010
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円盤状液晶における移動度0.1cm2/Vsを超える高速の電子輸送特性
2005年日本液晶学会討論会 2005
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Analysis of trap distribution for smectic liquid crystals using time of flight spectroscopy
SPIE-The International Society for Optical Engineering 2005
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Analysis of trap distribution for smectic liquid crystals using time of flight spectroscopy
SPIE-The International Society for Optical Engineering 2005
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Fast electron transport in discotic liquid crystalline semiconductors
SPIE-The International Society for Optical Engineering 2005
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量子効果を含む電子移動の寄与を考慮した移動度の電界依存性
大野 玲, 新田 武父, 半那 純一, 飯野 裕明
第86回応用物理学会秋季学術講演会 2025.9
Awards
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2016年度 日本液晶学会学会賞 論文賞Ａ部門（ａ分野）
2016.9 日本液晶学会
飯野 裕明
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2014年度 日本画像学会 研究奨励賞
2015.6 日本画像学会
飯野 裕明
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2013年度 日本液晶学会 奨励賞
2013.9 日本液晶学会
飯野 裕明
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平成25年度 東工大挑戦的研究賞
2013.8 東京工業大学
飯野 裕明
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第93春季年会 優秀講演賞（学術）
2013.4 日本化学会
飯野 裕明
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第10回応用物理学会有機分子・バイオエレクトロニクス分科会 奨励賞
2012.9 応用物理学会 M&BE分科会
飯野 裕明
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2012年年次大会 若手優秀研究発表賞
2012.9 日本写真学会
飯野 裕明
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2011年年次大会 若手優秀研究発表賞
2011.5 日本写真学会
飯野 裕明
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平成19年 日本写真学会 進歩賞
2007.5 日本写真学会
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2005年日本液晶学会討論会 虹彩賞
2005.9 日本液晶学会
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第17回応用物理学会 講演奨励賞
2005.3 応用物理学会
Research Projects
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Multiscale analysis of nanocomposite insulation materials and clarification of mechanism of insulation enhancement
Grant number：23K22744 2022.4 - 2026.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
Grant amount：\17680000 （ Direct Cost: \13600000 、 Indirect Cost：\4080000 ）
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Multiscale analysis of nanocomposite insulation materials and clarification of mechanism of insulation enhancement
Grant number：22H01473 2022.4 - 2026.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
Grant amount：\17680000 （ Direct Cost: \13600000 、 Indirect Cost：\4080000 ）
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Development of novel boron-containing electron transport materials with alkynylborane skeleton
Grant number：22K05074 2022.4 - 2025.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Grant amount：\4160000 （ Direct Cost: \3200000 、 Indirect Cost：\960000 ）
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Development of quality N-channel organic transistor using calamitic liquid crystals
Grant number：20K05644 2020.4 - 2023.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Grant amount：\4290000 （ Direct Cost: \3300000 、 Indirect Cost：\990000 ）
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Research of mono alkylated liquid crystalline organic-semiconductors as quality transistor materials(Fostering Joint International Research)
Grant number：15KK0183 2016 - 2019
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research)
Iino Hiroaki
Grant amount：\12870000 （ Direct Cost: \9900000 、 Indirect Cost：\2970000 ）
I have investigated the origin of high charge carrier mobility in crystalline thin films of liquid crystalline organic semiconductors after changing crystals structure by thermal annealing. The thermal annealing induced the transformation from monolayer to bilayer crystal structures on the surface of substrates, which are same structures as liquid crystal and single crystal, respectively. The organic transistors with proper electrode show low contact resistance and the mobility is close to the intrinsic mobility of crystalline thin films.
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Study on organic transistor materials using mono-alkylated liquid crystalline molecules
Grant number：15K05662 2015.4 - 2018.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Iino Hiroaki
Grant amount：\4940000 （ Direct Cost: \3800000 、 Indirect Cost：\1140000 ）
Mono-alkylated liquid crystalline molecules, which have an alkyl side chain with conjugated aromatic system that is carrier transport moiety, give us organic transistor having high mobility, because the crystalline structure is bilayered crystal structure of aromatic systems and increases the carrier transport path on inter layers. Thin films having the bilayered crystal structure are fabricated from the film having mono layered crystal structure via uniform liquid crystalline films by thermal or solvent vapor annealing. These bilayered crystal structure and organic transistors having high mobility are also realized by other mono-alkylated liquid crystalline molecules. Thus, mono-alkylated liquid crystalline organic semiconductors are a good candidate as organic transistor materials having good solution processability and high mobility.
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Development of quality organic transistors fabricated by solution process at room temperature using supercooled liquid crystal phase
Grant number：24750178 2012.4 - 2015.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
IINO Hiroaki
Grant amount：\4810000 （ Direct Cost: \3700000 、 Indirect Cost：\1110000 ）
I have investigated the organic transistor materials having supercooled liquid crystal phase in order to realize both high solution processability and high thermal durability of polycrystalline thin films. The developed materials having a supercooled liquid crystal phase show high solution processability at room temperature and high FET mobility over 10cm2/Vs after thermal annealing at 120 oC for 5minutes, despite of polycrystalline thin films. Furthermore, the high mobility is hardly changed after thermal stress up to 140 oC because the materials have an asymmetric phase transition behavior in cooling and heating process. I succeeded the development of quality organic transistors materials having high solution processability, high thermal durability, and high mobility.
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Fabrication of nano-structure using liquid crystal phase and its application to organic solar cells
Grant number：21750188 2009 - 2011
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
IINO Hiroaki
Grant amount：\4420000 （ Direct Cost: \3400000 、 Indirect Cost：\1020000 ）
I have tried to investigate the fabrication of P-N-nano-structure and its application to organic thin film solar cells. I chose the fullerene derivative and liquid crystalline materials as N-type and P-type semiconductors, respectively. In the materials having lower ordered liquid crystal phases, the liquid crystal phase disappeared in low-concentration mixture with fullerene derivative(less than several%). On the other hand, in the material having highly ordered liquid crystal phase, mesophase appeared in spite of high-concentration mixture with fullerene. This fact indicates that the highly ordered liquid crystal is very effective for fabrication of nano-structure using liquid crystal phase. I also developed liquid crystalline materials having highly ordered liquid crystal phase and measured their carrier transport properties, and developed fabrication of very uniform thin film using liquid crystal phases.
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分子凝集相における電子・イオン伝導チャネルの形成と制御
Grant number：19017006 2007 - 2008
日本学術振興会 科学研究費助成事業 特定領域研究
半那 純一, 飯野 裕明
Grant amount：\4800000 （ Direct Cost: \4800000 ）
棒状液晶物質をモデルとして、ポリアニリンによるドーピングによる電子伝導、及び、イオン液体によるいイオン伝導のバルクキャリア濃度の制御、及び、それを利用した液晶物質を半導体層とするTFT特性の改善について検討した。
ポリアニリンを所定量ドープした8-TTP-8の低電界下での電流特性は、その濃度に依存して増加し、増大し、最大4桁(1wt%時)増大が見られた。一方、ポリアニリンのHOMO準位よりもホールに対してエネルギー的に高いHOMO準位を持つNaphthalene系液晶8-PNP-012ではこの現象は観測できなかった。さらに、ドープされた試料のtime-of-flight法による過渡光電流の測定から、濃度によらず移動度は未ドープの試料と変わらないことから、ポリアニリンは液晶中では液晶分子が形成するスメクティック層の層間に存在しているものと考えられた。8-TTP-8の多結晶薄膜を有機半導体層として作製したボトムゲートFETの素子特性は未ドープのFETの特性に比べ、on電流、及び、ゲート電圧に対する電流の立ち上がりの改善が見られ、移動度は約2倍の0.2cm^2/Vsまで改善された。
イオン液体によってドープした8-TTP-8の液晶相ではイオン液体の種類による伝導度の違いはあるものの、いずれの場合も濃度に依存して伝導度の上昇が観測され、結晶相では高濃度ドープした試料を除いてその濃度に係わらず、未ドープ試料の示す伝導度との違いが見られなかった。この特性は、8-PNP-012の場合も基本的に同じ結果を与えた。これらの結果は、ドープされたイオン液体が液晶物質の中で解離し、イオンとして伝導に寄与していることを示している。イオン液体の種類による伝導度の違いは液晶物質中におけるイオン液体の解離の違いによると考えられた。 -
液晶性物質を用いたウエットプロセスによる有機多結晶薄膜トランジスタの研究
Grant number：18850008 2006 - 2007
日本学術振興会 科学研究費助成事業 若手研究(スタートアップ)
飯野 裕明
Grant amount：\2430000 （ Direct Cost: \2430000 ）
平成19年度は(1)加熱スピンコートによる多結晶薄膜作製の詳細な検討(2)平成18年度に検討した棒状液晶系(チオフェン系)、円盤状液晶(フタロシアニン系)の多結晶薄膜を用いた有機トランジスタの作製および評価(3)新規な液晶材料(チオフェン、ペリレン系)の多結晶薄膜の電荷輸送評価および有機トランジスタの作製および評価を行った。
(1)液晶相を示す温度における加熱スピンコートを行った際のみ、均一な薄膜作製が可能であった。従って、液晶相においてスピンコートをすることが均一な薄膜作製には重要であることが示唆された。
(2)棒状液晶においては良好なトランジスタ特性を示し、移動度(>10^<-2>cm^2/Vs)が過渡光電流測定法で求まる移動度(粒界の影響を受けていない移動度)と一致したのに対し、円盤状液晶においては良好なトランジスタ特性は示さなかった(移動度<10^<-5>cm^2/Vs)。これは配向制御が容易な棒状液晶においては粒界方向を制御でき粒界の影響を受けない電荷輸送特性になったのに対し、円盤状液晶は分子配向制御ができず、粒界の影響を強く受けたためと示唆された。
(3)過渡光電流測定法により高移動度(>0.1cm^2/Vs)を示すターチオフェン液晶、およびペリレン液晶を上記と同様な方法でトランジスタを作製したところ、それぞれ、pチャネル、nチャネルで動作し、移動度が0.1cm^2/Vsを超えることを見出した。
このように液晶性物質の多結晶薄膜は、(1)液晶相を用いることで通常では困難なウエットプロセスによる均一な多結晶薄膜の作製が可能、(2)液晶相を経由することで分子配向制御させた多結晶薄膜作製が可能、(3)粒界方向を制御でき電荷輸送方向には粒界の影響が少ない、といった特徴を有することが明らかになった。その結果、通常の多結晶材料の真空蒸着法で示されるような高移動度(>0.1cm^2/Vs)を示すpチャネル、nチャネルのトランジスタをウエットプロセスで実現させることに成功した。