Search Results 1-20 of 404

  • Precise Control of Molecular Thin-film Surface and Its Application to Organic Solar Cells  [in Japanese]

    NAKANO Kyohei , TAJIMA Keisuke

    … <p>For electronic devices with molecular semiconductors, surface of the molecular semiconductor thin-films plays a key role in the device performance. … We discuss its formation mechanism, characterization, and application to investigating the physics of organic solar cell devices.</p> …

    Vacuum and Surface Science 64(1), 28-33, 2021


  • Bio-sensing and nerve stimulation using flexible electronic devices  [in Japanese]

    関野 正樹

    電気学会研究会資料. MAG = The papers of technical meeting on magnetics, IEE Japan 2020(16・17・19-46), 37-40, 2020-03-19

  • Functional organic electronic device formation and characterization of interfacial conductivity  [in Japanese]

    筒井 祐介

    令和元年度 京都大学化学研究所 スーパーコンピュータシステム 利用報告書

    京都大学化学研究所スーパーコンピュータシステム研究成果報告書 (2019), 40-40, 2020-03


  • Enhanced orientation of 1,3,5-tris(1-phenyl-1H-benzimidazole-2-yl)benzene by light irradiation during its deposition evaluated by displacement current measurement

    TANAKA Yuya , TAZO Yuki , ISHII Hisao

    … <p>In vacuum-deposited film composed of organic polar molecules, polarization charges appear on the film surface owing to spontaneous orientation of the molecule. … Because its density (σ<sub>pol</sub>) determines an amount of accumulation charge (σ<sub>acc</sub>) in organic light-emitting diodes and output power in polar molecular-based vibrational energy generators (VEGs), control of molecular orientation is highly required. …

    IEICE Transactions on Electronics, 2020


  • Improvement of Chemical Stability in Electrochemical Migration Resistance in Printed Silver Electrodes  [in Japanese]

    Sekine Tomohito , Takeda Yasunori , Kumaki Daisuke , Tokito Shizuo

    <p>印刷法を用いて作製する有機エレクトロニクスは大面積・低コストな電子デバイスを実現できるため,近年注目が集まっている研究分野である。特に,これらはフレキシブル基板上に形成することで,ヒトの肌に貼り付けて体調管理を行えるウェアラブルなヘルスケアデバイスに応用できる。一方,上記デバイスにおける印刷銀電極は,ヒトに直接貼付するため,汗や湿度に対するエレクトロケミカルマイグレーション(EC …

    Journal of The Japan Institute of Electronics Packaging 23(6), 516-520, 2020


  • Preparation of Phosphorylated Cellulose Nanofiber and Its Utilization  [in Japanese]

    Todoroki Yusuke

    <p>セルロースナノファイバー(CNF)は,セルロース分子鎖が木材パルプ中で規則的に配列した結晶性の繊維を単離することで得られる。CNFは循環型材料であるだけでなく,ユニークな特徴を有するため,その用途開発が期待されている。針葉樹クラフトパルプをリン酸エステル化処理したのち機械処理することで,リン酸基が結晶の表面に導入されたCNFが水中で孤立分散する。分散体は特異なレオロジー特性を有し …

    JAPAN TAPPI JOURNAL 74(2), 116-120, 2020


  • High Resolution Electrodes Patterning Using Surface Wettability Control and its Application to Organic Thin-film Transistors  [in Japanese]

    YOSHIDA Shota , MATSUURA You , SHIWAKU Rei , TAKEDA Yasunori , SEKINE Tomohito , HAMAGUCHI Hitoshi , KUMAKI Daisuke , TOKITO Shizuo

    <p>近年,印刷プロセスを用いた電子デバイスの開発が非常に注目を集めている.中でもインクジェット印刷は,デジタルオンデマンド印刷,高い材料の使用効率,スケーラブルな作製法,非接触印刷という特徴を有しており,デバイス作製を行う上で最も有用な方法の1つである.一方で,インクジェット印刷では,着弾液滴の濡れ広がりの問題から10<i>μ</i>m以下の微細パターンを形成 …

    NIHON GAZO GAKKAISHI (Journal of the Imaging Society of Japan) 59(1), 111-117, 2020


  • Electrically Controllable Spin States of Holes and Electrons in Organic Semiconductor Materials

    丸本 一弘 , Shohei Iguchi , Yuki Sakurai , Naohiro Fujita , Fumiya Osawa , Kazuhiro MARUMOTO

    … Elucidating hole and electron states in organic semiconductor materials is one of the important issues for both their fundamental science and device applications. … Here we show electrically controllable spin states of holes and electrons in typical organic semiconductor materials, a polymer regioregular poly(3-hexylthiophene) (RR-P3HT) and a small molecule pentacene, using electron spin resonance (ESR) spectroscopy. …

    ACS Applied Electronic Materials 1(12), 2522-2530, 2019-12


  • Surface Defect Dynamics in Organic–Inorganic Hybrid Perovskites: From Mechanism to Interfacial Properties

    Collin Stecker , Kexi Liu , Jeremy Hieulle , Robin Ohmann , Zhenyu Liu , Luis K. Ono , Guofeng Wang , Yabing Qi

    Organic–inorganic hybrid perovskites (OHPs) have garnered much attention among the photovoltaic and light-emitting diode research community due to their excellent optoelectronic properties and low-cost fabrication. … Defects in perovskites have been proposed to affect device efficiency and stability and to have a potential role in enabling ion migration. … In this study, the dynamic behavior and electronic properties of intrinsic defects in CH3NH3PbBr3 (MAPbBr3) were explored at the atomic scale. …

    ACS Nano 13(10), 12127-12136, 2019-09-30


  • Role of device architecture and AlOX interlayer in organic Schottky diodes and their interpretation by analytical modeling

    Kumari Nikita , Pandey Manish , Hamada Kengo , Hirotani Daisuke , Nagamatsu Shuichi , Hayase Shuzi , Pandey Shyam S.

    … Considering the pivotal role of interfaces in controlling the performance of organic electronic devices, implications of metal/organic interfacial quality in a Schottky barrier diode (SBD) are investigated. … The nature of metal/organic interfaces and the thin film quality of regioregular poly (3-hexylthiophene) based SBDs fabricated in different device architectures are investigated using experimental and theoretical modeling. …

    Journal of Applied Physics (126), 125501-1-125501-12, 2019-09-25


  • Recent advances in the orientation of conjugated polymers for organic field-effect transistors

    Pandey Manish , Kumari Nikita , Nagamatsu Shuichi , Pandey Shyam S.

    … Short-range molecular ordering and long-range macroscopic orientation are two different but interdependent phenomena, which should be optimized depending on the nature of electronic devices (planar versus vertical). … Judicious control of the macromolecular orientations and conformation-assisted morphologies of CPs are key for determining and controlling the anisotropic charge transport in organic field effect transistors (OFETs). …

    Journal of Materials Chemistry C 7(43), 13323-13351, 2019-09-13


  • Dithiazolylthienothiophene Bisimide: A Novel Electron-Deficient Building Unit for N-Type Semiconducting Polymers

    Teshima Yoshikazu , Saito Masahiko , Fukuhara Tomohiro , Mikie Tsubasa , Komeyama Kimihiro , Yoshida Hiroto , Ohkita Hideo , Osaka Itaru

    … N-type (electron-transporting) semiconducting polymers are essential materials for the development of truly plastic electronic devices. … In fact, TzBI-based polymers function as the n-type semiconducting material in both organic field-effect transistor (OFET) and organic photovoltaic (OPV) devices. …

    ACS Applied Materials & Interfaces 11(26), 23410-23416, 2019-07-03


  • The Effect of Decomposed PbI2 on Microscopic Mechanisms of Scattering in CH3NH3PbI3 Films

    Dan Shan , Guoqing Tong , Yunqing Cao , Mingjun Tang , Jun Xu , Linwei Yu , Kunji Chen

    … Hybrid organic-inorganic perovskites (HOIPs) exhibit long electronic carrier diffusion length, high optical absorption coefficient, and impressive photovoltaic device performance. … At the core of any optoelectronic device lie the charge transport properties, especially the microscopic mechanism of scattering, which must efficiently affect the device function. …

    Nanoscale Research Letters 14(1), 208, 2019-06-18


  • Challenges and Progress in Defectivity for Advanced ArF Lithography Process

    Tango Naohiro , Yamamoto Kei , Shirakawa Michihiro , Ou Keiyu , Goto Akiyoshi , Fujita Mitsuhiro , Shiraishi Yasuharu , Fujimori Toru

    … The target for defect counts is becoming severe regarding especially logic device. …

    Journal of Photopolymer Science and Technology 32(3), 445-448, 2019


  • Evaluation of Immunoelectrode based on Carbon Nanotube using Electrochemical Measurement Methods  [in Japanese]

    Basu Tink , Onoda Mitsuyoshi

    … <p>Much progress in the field of organic nanotechnology and biomolecular electronics for environmental preservation will be expected in 21<sup>st</sup> … A bio-device using information transfer-conversion system of the creature is a biosensor. … is an electronic circuit device using migration of ions in electrolytic solution.</p> …

    IEEJ Transactions on Fundamentals and Materials 139(9), 360-366, 2019


  • Progress of Flexible Printed Organic Electronics  [in Japanese]

    TOKITO Shizuo

    … <p>Flexible and printed organic electronics technology has garnered increasing attention and resources in research and development because of its potential use in low-cost, environmentally friendly electronic devices. … We successfully fabricated pseudo-CMOS inverters using p-type organic thin-film transistor (OTFT) devices and NAND logic gates. …

    Journal of Printing Science and Technology 56(3), 124-130, 2019


  • Review of Molecular Engineering for Horizontal Molecular Orientation in Organic Light-Emitting Devices

    Watanabe Yuichiro , Sasabe Hisahiro , Kido Junji

    … <p>Organic light-emitting devices (OLEDs) are widely used in next-generation eco-friendly solid-state display and lighting technologies. … Most key optoelectronic functions of organic films used in organic semiconductor devices are dependent on two important factors: the electronic properties of single molecules, and the molecular orientations. …

    Bulletin of the Chemical Society of Japan 92(3), 716-728, 2019


  • Two-dimensional Organic Materials and Their Electronic Applications

    Wang Hengyuan , Wang Qijing , Li Yun

    … <p>Soluble organic semiconductors have been widely researched for a wide range of application scenarios, such as organic field-effect transistors (OFETs), organic light-emitting diodes and solar cells. …

    Chemistry Letters 48(1), 14-21, 2019


  • Rapid Formation and Macroscopic Self-Assembly of Liquid-Crystalline, High-Mobility, Semiconducting Thienothiophene

    Pandey Manish , Gowda Ashwathanarayana , Nagamatsu Shuichi , Kumar Sandeep , Takashima Wataru , Hayase Shuzi , Pande Shyam S.

    … A synergistic approach to enhance charge-carrier transport in organic semiconductors along with facile solution processing and high performance is crucial for the advancement of organic electronics. … Utilization of such oriented films as the active semiconducting layer in organic field-effect transistors (OFETs) results in highly anisotropic charge-carrier transport. …

    Advanced Materials Interfaces 5(6), 2018-01-22


  • Konicaminolta's Work for Long Life Time Organic Photoconductor  [in Japanese]

    HAYATA Hirofumi

    <p>1980年代の上市以来,電子写真用有機感光体 (OPC) は着実に印刷速度と製品寿命を向上してきている.今日,一部オフィス系機種においてOPCは無交換で使用されている.OPCが産業印刷に使用される場合では,OPC起因の画像不良に伴う機械停止を極力少なくする必要があり,OPCの高耐久·長寿命化の市場要望が強い.機能面では,OPCは感度,速度応答性,機械的強度,表面物性,等,多様な機 …

    NIHON GAZO GAKKAISHI (Journal of the Imaging Society of Japan) 57(5), 576-582, 2018


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