研究者詳細 - 小林　隆史

写真a

コバヤシ　タカシ

小林　隆史

Kobayashi Takashi

担当

大学院工学研究科電子物理系専攻准教授
工学部電子物理工学科

所属

工学研究院

所属キャンパス

中百舌鳥キャンパス

担当・職階

大学院工学研究科電子物理系専攻

准教授 2022年04月 - 継続中
工学部電子物理工学科

准教授 2022年04月 - 継続中

取得学位

博士（理学）（上智大学）

研究分野

ものづくり技術（機械・電気電子・化学工学） / 電気電子材料工学
ものづくり技術（機械・電気電子・化学工学） / 電子デバイス、電子機器
自然科学一般 / 半導体、光物性、原子物理

研究キーワード

有機半導体
デバイス物理
光物理
有機エレクトロニクス

研究概要

有機半導体の光物性の解明
有機電子デバイスの動作機構の解明
有機太陽電池の開発および評価

研究歴

有機デバイスの動作機構の解明

有機太陽電池、変調分光、超高速分光
有機材料を用いたデバイス開発

ポリチオフェン、ポリフルオレン、有機EL、有機トランジスタ、有機太陽電池
π共役系高分子の光物性

非線形分光、構造制御、共重合化

所属学協会

応用物理学会

2001年04月 - 継続中国内
応用物理学会有機分子バイオエレクトロニクス分科会

2009年04月 - 継続中国内
有機EL討論会

2017年04月 - 継続中国内
応用物理学会

委員歴（学外）

会計幹事応用物理学会有機分子バイオエレクトロニクス分科会

2013年04月 - 2015年03月
監査応用物理学会関西支部

2022年04月 - 継続中
庶務幹事応用物理学会関西支部

2015年04月 - 2017年04月
会計幹事応用物理学会　有機ナノ界面制御素子研究会

2017年04月 - 継続中
プログラム委員有機EL討論会

2017年04月 - 継続中
プログラム副委員長有機EL討論会

2020年04月 - 2021年03月
プログラム委員長有機EL討論会

2021年04月 - 2022年03月

▼全件表示

職務経歴（学外）

大阪府立大学大学院工学研究科助手→助教→准教授

2004年04月 - 継続中
理化学研究所　基礎科学特別研究員

2001年04月 - 2004年03月

論文

Low Voltage Operation of Organic Phototransistor Memory with Organic Charge Storage Layer

R. Hattori, T. Nagase, N. Nishida, T. Kobayashi, H. Naito

Proceedings of the International Display Workshops 28 945 - 947 2021年12月

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共著区分：共著
Organic Floating-Gate Memory for Image Sensing

R. Hattori, T. Nagase, N. Nishida, T. Kobayashi, H. Naito

Proceedings of the International Conference on Advanced Imaging 2021 42 - 45 2021年10月

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共著区分：共著
Performance Improvement of Solution-Processed Organic Floating-Gate Transistor Memories via Tuning the Work Function of Gate Electrodes

N. Nishida, R. Hattori, S. Tazuhara, M. Higashinakaya, T. Nagase, T. Kobayashi, H. Naito

Proceedings of the 28th International Workshop on Active-Matrix Flatpanel Displays and Devices 120 - 121 2021年06月

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共著区分：共著
Understanding the influence of contact resistances on short-channel high-mobility organic transistors in linear and saturation regimes 査読

Shion Tazuhara, Takashi Nagase, Takashi Kobayashi, Yuichi Sadamitsu and Hiroyoshi Naito

Appl. Phys. Express 14 2021年04月

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共著区分：共著
Enhanced performance of solution-processable floating-gate organic phototransistor memory for organic image sensor applications 査読

Hayato Abe, Reitaro Hattori, Takashi Nagase, Miho Higashinakaya, Shion Tazuhara, Fumiya Shiono, Takashi Kobayashi, Hiroyoshi Naito

Applied Physics Express 14 ( 4 ) 2021年04月（ ISSN:1882-0778 ）

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掲載種別：研究論文（学術雑誌）

This paper reports on the memory characteristics of solution-processed organic phototransistors (OPTs) based on poly(3-hexylthiophene) with organic semiconductor floating gates and their application to image sensors. The addition of a small amount of soluble fullerene to the floating-gate layer enhances the erasing characteristics, which helps increase the on- and off-current ratio of the OPT memories. Furthermore, the OPT memories can achieve a long extrapolated retention time (>109 s) and high photosensitivity upon illumination of as weak as 10 μW cm2. A black and white pattern printed on paper can be imaged using the solution-processed OPT memory array.

DOI： 10.35848/1882-0786/abee9e
Revisiting open-circuit photovoltage decay in organic solar cells for the determination of bimolecular recombination constants 査読

Emi Nakatsuka, Kiyohito Mori, Naoki Ueno, Takashi Kobayashi, Takashi Nagase, Hiroyoshi Naito

Japanese Journal of Applied Physics 60 ( 3 ) 2021年03月（ ISSN:0021-4922 ）

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掲載種別：研究論文（学術雑誌）

Open-circuit photovoltage decay from the steady state for the determination of bimolecular recombination constants has been studied in organic solar cells (OSCs) with three prototypical bulk heterojunctions including fullerene and non-fullerene acceptors. A simple theory for the determination of recombination constants from the initial decay rate of the open-circuit photovoltage was shown. The effective lifetimes were experimentally determined from the initial decay rates and were proportional to the −0.5 power of the excitation light intensity, indicating that the recombination process under the open-circuit condition in the OSCs is bimolecular. The experimental setup was also simple, and hence the experiment and the analysis are applicable to a variety of OSCs under operation. Information on the transport properties including bimolecular recombination constants is useful for the design and the optimization of the device architecture of OSCs.

DOI： 10.35848/1347-4065/abdf15
Electrically programmable multilevel nonvolatile memories based on solution-processed organic floating-gate transistors 査読

M. Higashinakaya, T. Nagase, H. Abe, R. Hattori, S. Tazuhara, T. Kobayashi, H. Naito

Applied Physics Letters 118 103301/1 - 103301/6 2021年03月

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掲載種別：研究論文（学術雑誌）
インピーダンス分光法による高分子発光ダイオードの電荷輸送特性評価

冨士本直起, 高田誠, 永瀬隆, 小林隆史, 内藤裕義

日本画像学会誌 60 ( 2 ) 112 - 119 2021年（ ISSN:1344-4425 ）

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異なる4種の蛍光ポリマー (Spiro-Red;SR, Super Orange;SO, Spiro-Green;SG, Super Yellow;SY) を発光層とする高分子発光ダイオード (polymer light-emitting diodes;PLEDs) を作製した．それぞれのPLEDsにおいて発光層の膜厚最適化を行った結果，最高電流効率は1.23cd/A (SR)，4.33cd/A (SO)，7.70cd/A (SG)，11.2cd/A (SY) であった．最適化したPLEDsにおいて，発光層の電子および正孔のドリフト移動度 (μn, (μp) と二分子再結合定数 (β) をインピーダンス分光 (impedance spectroscopy;IS) 測定により同時評価した．IS測定によって得られた二分子再結合定数は，電子，正孔ドリフト移動度から算出したLangevin再結合定数よりも2桁程度小さいことが分かった．さらに，実測した二分子再結合定数から見積もった量子効率は，輝度から算出される外部量子効率と相関があることが分かった．

DOI： 10.11370/isj.60.112

CiNii Article
Organic Floating-Gate Transistors with Hole Trapping Characteristics for NAND-Like Memory Operation

M. Higashinakaya, T. Nagase, R. Hattori, S. Tazuhara, T. Kobayashi, H. Naito

Proceedings of the International Display Workshops 27 882 - 883 2020年12月

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掲載種別：研究論文（国際会議プロシーディングス）
Enhancement of Optical Memory Characteristics of Solution-Processed Organic Transistor Memories with Polymer-Small-Molecule Composite Charge Storage Layers

R. Hattori, T. Nagase, M. Higashinakaya, S. Tazuhara, T. Kobayashi, H. Naito

Proceedings of the International Display Workshops 27 178 - 179 2020年12月

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掲載種別：研究論文（国際会議プロシーディングス）
Operation mechanism and efficiency-limiting factors in solution-processed quantum-dots light-emitting diodes 査読

Shoichi Sano, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

Organic Electronics 86 2020年11月（ ISSN:1566-1199 ）

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掲載種別：研究論文（学術雑誌）

Efficiency limiting factors of quantum dots light-emitting diodes (QLEDs) are studied by means of a machine learning approach using features taken from published data. Prototypical structure of QLEDs studied here is transparent conductive oxide (TCO) (anode)/hole injection layer (HIL)/hole transport layer (HTL)/quantum dots (QDs)/electron transport layer (ETL)/Al (cathode), which can be fabricated by printing processes. The most important efficiency limiting factor manifested from the machine learning is the hole injection barrier from HTL to QD layer, and the energy barrier reported in literature is about 1 eV in CdSe QDs based QLEDs. A mechanism of the hole injection in such QLEDs is examined by means of device simulation. Other efficiency limiting factors - the electron mobility of HTL and carrier balance in QD layer - are shown on the basis of the device simulation results. The importance of the efficiency limiting factors are experimentally confirmed, indicating that information concerning the electronic transport properties of HTL, QD layer and ETL is essential for the design of QLEDs by means of machine learning approach.

DOI： 10.1016/j.orgel.2020.105865
Interpretation of the modulus spectra of organic field-effect transistors with electrode overlap and peripheral regions: Determination of the electronic properties of the gate insulator and organic semiconductor 査読

Yu Suenaga, Miho Higashinakaya, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

Japanese Journal of Applied Physics 59 ( 9 ) 2020年09月（ ISSN:0021-4922 ）

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掲載種別：研究論文（学術雑誌）

The modulus spectra of organic field-effect transistors (OFETs) with electrode overlap and peripheral regions have been experimentally and theoretically investigated. The complex impedance of regioregular poly(3-hexylthiophene-2,5-diyl) (P3HT) OFETs with electrode overlap and peripheral regions was measured with a frequency response analyzer. The complex modulus was derived from an equivalent circuit of OFETs with overlap and peripheral regions using a four-terminal matrix approach. The modulus spectra of the P3HT OFETs were successfully fitted by those calculated using the expression derived from the equivalent circuit. Three structures were found in the modulus spectra of the P3HT OFETs owing to the dielectric properties of the gate insulator, transport properties of the organic semiconductor, and contact resistance from the low to high frequency ranges. The resistivity of the gate insulators and the field-effect mobility of working OFETs were determined using the values of the circuit components of the equivalent circuit obtained by fitting.

DOI： 10.35848/1347-4065/ababb9
Modulated photocurrent spectroscopy study of the electronic transport properties of working organic photovoltaics: Degradation analysis 査読

Emi Nakatsuka, Yo Kumoda, Kiyohito Mori, Takashi Kobayashi, Takashi Nagase, Hiroyoshi Naito

Materials 13 ( 11 ) 2020年06月

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掲載種別：研究論文（学術雑誌）

Electronic transport measurement using modulated photocurrent (MPC) spectroscopy is demonstrated herein in working organic photovoltaics (OPVs) before and after AM1.5G irradiation. OPVs with bulk heterojunction (BHJ) using prototypical donor and acceptor materials, poly[4,8-bis[(2-ethylhexyl)oxy]benzo[1-2-b:4,5-b0]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl) carbonyl] = hieno [3-4-b]thiophenediyl] (PTB7) and [6,6]-phenyl-C71-butyric acid methyl ester (PC BM), were fabricated. The OPVs had inverted structures (BHJs are formed on transparent conductive oxide substrates). The photovoltaic performance of PTB7:PC BMOPVs was characterized and the best power conversion efficiency was obtained at PTB7 content of 40 wt%. Electron and hole mobility were determined with MPC spectroscopy in PTB7:PC BM OPVs and were well balanced at PTB7 content of 40 wt%. Degradation of the photovoltaic performance of PTB7:PC BM OPVs with PTB7 content of 40 wt% caused by AM1.5G irradiation was studied. MPC spectroscopy showed that the well-balanced mobility was not affected by AM1.5G irradiation. The degradation of OPVs was not due to changes in the electronic transport properties, but mainly to the reduced short circuit current (J ) and fill factor (FF). The origin of this reduction is discussed. 71 71 71 71 sc

DOI： 10.3390/ma13112660
Simultaneous determination of electron and hole drift mobilities in working inverted organic solar cells: modulated photocurrent spectroscopy versus impedance spectroscopy 査読

Yo Kumoda, Emi Nakatsuka, Kiyohito Mori, Hiroki Nojima, Takashi Kobayashi, Takashi Nagase, Hiroyoshi Naito

59 064002/1 - 6 2020年06月

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共著区分：共著
Intersystem Crossing Rate in Thermally Activated Delayed Fluorescence Emitters 査読

Takashi Kobayashi, Daisuke Kawate, Akitsugu Niwa, Takashi Nagase, Kenichi Goushi, Chihaya Adachi, Hiroyoshi Naito

Physica Status Solidi (A) Applications and Materials Science 217 ( 3 ) 1900616/1 - 1900616/6 2020年02月（ ISSN:1862-6300 ）

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掲載種別：研究論文（学術雑誌）

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim For a better understanding of the exciton decay process in thermally activated delayed fluorescence (TADF) emitters, the intersystem crossing rate, kISC, is one of the important physical constants that have to be determined. Herein, a method to calculate the kISC value from photoluminescence (PL) measurements is reconsidered. The kISC value can be determined at very low temperatures where delayed fluorescence (DF) is completely suppressed, as well as around room temperature where triplet excitons mainly decay into the ground state by emitting DF. However, there is a temperature range where the kISC value cannot be determined accurately because the influences of nonradiative decay paths can be neither ignored nor corrected. For such a temperature range, an alternative approach, which utilizes the temperature dependence of an observed PL decay rate, is presented. In this way, kISC values from 300 to 10 K are determined for thin films of two TADF emitters, i.e., 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene and 1,2-bis(carbazol-9-yl)-4,5-dicyanobenzene, which are known as 4CzIPN and 2CzPN, respectively.

DOI： 10.1002/pssa.201900616
Interpretation of modulus spectra in organic field-effect transistors: Equivalent-circuit approach 査読

Yu Suenaga, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

Japanese Journal of Applied Physics 59 ( SD ) SDDA06/1 - SDDA06/5 2020年01月（ ISSN:0021-4922 ）

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掲載種別：研究論文（学術雑誌）

© 2019 The Japan Society of Applied Physics. Complex modulus spectra of organic field-effect transistors (OFETs) with electrode overlap regions were investigated both experimentally and theoretically. Complex modulus spectra in a poly(3-hexylthiophene-2,5-diyl) (P3HT) FET were measured using an impedance analyzer. An equivalent-circuit of OFETs with the overlap between gate and source/drain electrodes was proposed to interpret the experimentally-obtained complex modulus spectra. The complex modulus spectra calculated from the equivalent circuit were successfully fitted to the experimentally-obtained spectra of P3HT FETs. It is shown that the dielectric properties of the gate insulator, the field-effect mobility of the organic semiconductor, and the contact resistance are obtained by means of the fitting of the theoretically-obtained modulus spectra to the experimentally-obtained spectra.

DOI： 10.7567/1347-4065/ab4ee0
界面準位を考慮した有機電界効果トランジスタの等価回路査読

末永悠, 永瀬隆, 小林隆史, 内藤裕義

日本画像学会誌 59 ( 1 ) 18 - 27 2020年（ ISSN:1344-4425 ）

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CiNii Article
Modulated Photocurrent Spectroscopy for Determination of Electron and Hole Mobilities in Working Organic Solar Cells 査読

Hiroki Nojima, Takashi Kobayashi, Takashi Nagase, Hiroyoshi Naito

Scientific Reports 9 ( 1 ) 20346/1 - 20346/8 2019年12月

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掲載種別：研究論文（学術雑誌）

© 2019, The Author(s). Carrier drift mobility is an important physical constant in the charge transport process of organic solar cells (OSCs). Although time-of-flight and space-charge-limited current techniques have been frequently utilized for mobility measurements, the validity of a new method using modulation photocurrent spectroscopy is discussed in this contribution. The advantages of this method are its applicability to working OSCs with optimized device structures and the simultaneous determination of the electron and hole mobilities. These features make it possible to study the relation between the mobility balance and the solar cell characteristics, such as the power conversion efficiency, using only a single working OSC; hence, it is not necessary to fabricate electron-only and hole-only devices for mobility measurements. After carrying out numerical simulations to examine the validity of this method for mobility determination, the dependence of the mobility balance on the mixing ratio of the electron-donor and –acceptor materials is presented.

DOI： 10.1038/s41598-019-56945-3

PubMed
Mechanisms of operation in quantum-dot light-emitting diodes

Shoichi Sano, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

Proceedings of the International Display Workshops 26 947 - 948 2019年12月（ ISSN:1883-2490 ）（ ISBN:9781713806301 ）

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掲載種別：研究論文（国際会議プロシーディングス）

Mechanisms of operation in quantum-dot light-emitting diodes (QLEDs) have been investigated theoretically and experimentally. Important factors governing the current efficiency of QLED were examined using a machine learning approach. High hole injection barrier to QD is the dominant efficiency limiting factor, and the machine learning result was confirmed experimentally. A mechanism of high current efficiency even in the presence of high hole injection was discussed in terms of device simulation.
Effect of non-chlorinated solvents on the enhancement of field-effect mobility in dioctylbenzothienobenzothiophene-based top-gate organic transistors processed by spin coating 査読

Shoya Sanda, Ryousuke Nakamichi, Takashi Nagase, Takashi Kobayashi, Kazuo Takimiya, Yuichi Sadamitsu, Hiroyoshi Naito

Organic Electronics 69 181 - 189 2019年06月（ ISSN:1566-1199 ）

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掲載種別：研究論文（学術雑誌）

© 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 investigate the influence of the use of non-chlorinated solvents, such as toluene, p-xylene, cyclohexanone, and mesitylene, for the deposition of 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT) films by spin coating on the morphologies of these semiconductor films and the electrical characteristics of OFETs with a top-gate configuration. The results show that the size of polycrystalline domains in spin-coated C8-BTBT films tends to increase as the boiling point (b.p.) of the solvent increases, whereas an improvement in the field-effect mobility is restricted by the decrease in the extent to which the C8-BTBT film covers the substrate due to the long evaporation time of high b.p. solvents. The addition of the high b.p. solvent p-xylene to toluene allows a significant increase in polycrystalline domain sizes in spin-coated C8-BTBT films. Further, spin coating C8-BTBT using the high b.p. solvent mesitylene at a high spin rate is effective for the production of thinner C8-BTBT films with diminished surface roughness. Top-gate C8-BTBT FETs processed by spin coating using a mixed binary solvent and by high-speed spin coating achieved high average field-effect mobilities of 4.9 and 5.4 cm2 V−1 s−1, respectively.

DOI： 10.1016/j.orgel.2019.02.004
Modulated photocurrent spectroscopies for characterization of the charge transport process in organic photovoltaics 査読

Hiroki Nojima, Takashi Kobayashi, Takashi Nagase, Hiroyoshi Naito

Journal of Physics: Conference Series 1220 ( 1 ) 012018/1 - 012018/4 2019年05月（ ISSN:1742-6588 ）

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掲載種別：研究論文（国際会議プロシーディングス）

© 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 MPC measurements, a photocurrent component modulating at the same frequency as the modulated incident light is recorded; however, in this study, a component modulating at twice the modulation frequency was detected. A linear process does not contribute to the detected signals; thus, this technique allows for focus on a process that converts incident photons into photocurrent in a nonlinear manner. An analysis using rate equations suggested that the nonlinearity resulted from the carrier density dependence of the internal electric field, which is the driving force of the carriers under the short-circuit condition. Furthermore, features due to both electron and hole transports were more clearly observed in the modified MPC measurements than in the conventional MPC measurements.

DOI： 10.1088/1742-6596/1220/1/012018
Characterization of carrier transport properties in working polymer light-emitting diodes

Makoto Takada, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

Digest of Technical Papers - SID International Symposium 50 ( Book 1 ) 263 - 266 2019年05月（ ISSN:0097-966X ）

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掲載種別：研究論文（研究会，シンポジウム資料等）

© 2019 SID. Charge carrier transport properties of polymer semiconductors (electron and hole drift mobilities, localized-tail-state distributions, and bimolecular recombination constants) in working polymer light-emitting diodes (PLEDs) are determined simultaneously using impedance spectroscopy (IS). The IS technique is also applicable to degradation analysis of the PLED.

DOI： 10.1002/sdtp.12906
Optical memory characteristics of solution-processed organic transistors with self-organized organic floating gates for printable multi-level storage devices 査読

Fumiya Shiono, Hayato Abe, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

Organic Electronics 67 109 - 115 2019年04月（ ISSN:1566-1199 ）

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掲載種別：研究論文（学術雑誌）

© 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 memory circuits capable of multi-level data storage. Here, we use a solution process to fabricate TG/BC OFET devices with organic floating-gate structures and investigate their memory characteristics under light illumination. A solution-processable organic composite of 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) and poly(methylmethacrylate) is employed to self-organize organic floating-gate structures on a solution-processed semiconductor layer composed of poly(3-hexylthiophene) (P3HT). The floating-gate OFET devices programmed with blue, green, and red light exhibit large threshold voltage (Vth) shifts of approximately 30 V and stable charge retention characteristics even under light illumination. The devices also exhibit high sensitivity to incident light during programming, and the degree of Vth shift and the on-state current can be tuned using light and programming voltage to facilitate distinct storage and readout of multi-level data.

DOI： 10.1016/j.orgel.2019.01.009
Determination of bimolecular recombination constants in organic double-injection devices using impedance spectroscopy 査読

Makoto Takada, Takahiro Mayumi, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

Applied Physics Letters 114 ( 12 ) 123301/1 - 123301/5 2019年03月（ ISSN:0003-6951 ）

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掲載種別：研究論文（学術雑誌）

© 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 proposed method is based on the theory that was developed to interpret the negative capacitance that has previously been observed in both OLEDs and OPVs. The determination of the bimolecular recombination constants is demonstrated using working polymer light-emitting diodes based on poly(9,9-dioctylfluorene-alt-benzothiadiazole). These impedance spectroscopy measurements thus allow us to 8determine the required bimolecular recombination coefficients along with the electron and hole drift mobilities in working organic double-injection diodes.

DOI： 10.1063/1.5066605
Synthesis and Characterization of Soluble Directly 2,2′-Linked Tetracene Dimer 査読

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 2019年03月（ ISSN:1434-193X ）

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© 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 a tetracene dimer by sequential addition of 1-hexynyllithium and SnCl 2 /HCl. The synthesized tetracene dimer with four hexyl and four 1-hexynyl groups was highly soluble in CH 2 Cl 2 and THF, and the solutions were unstable under air and room light. The compound was studied by X-ray single crystal analysis, UV/Vis, and fluorescence spectroscopy, cyclic voltammetry, and density functional theory (DFT) calculations. In the crystal, two tetracene rings take a coplanar conformation although DFT calculations demonstrated that such a molecular structure is energetically unfavorable. The tetracene dimer had red-shifted absorption maxima and large molar extinction coefficients compared with the corresponding tetracene monomer. The tetracene dimer also showed amphoteric redox properties and p-type semiconducting behavior.

DOI： 10.1002/ejoc.201801333
Full characterization of electronic transport properties in working polymer light-emitting diodes via impedance spectroscopy 査読

Makoto Takada, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

Journal of Applied Physics 125 ( 11 ) 115501/1 - 115501/9 2019年03月（ ISSN:0021-8979 ）

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掲載種別：研究論文（学術雑誌）

© 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 using impedance spectroscopy (IS). The organic light-emitting layers of these PLEDs are composed of poly(9,9-dioctylfluorene-alt-benzothiadiazole). Electron and hole transit time effects are observed in the capacitance-frequency characteristics of the PLEDs, and their drift mobilities are determined over wide temperature and electric field ranges. The drift mobilities exhibit thermally activated behavior, and the localized tail state distributions from the conduction band and valence band mobility edges are then determined from analysis of the electric field dependences of the activation energies. The bimolecular recombination constants are determined from the inductive response of the impedance-frequency characteristics. The IS technique is also applicable to degradation analysis of the PLEDs; changes in the mobility balance, the localized tail state distributions, and the bimolecular recombination constant caused by aging are all shown.

DOI： 10.1063/1.5085389
光誘起劣化させたPTB7:PC71BM逆構造有機薄膜太陽電池の電荷輸送特性

久茂田耀, 小林隆史, 永瀬隆, 内藤裕義

応用物理学会学術講演会講演予稿集 2019.1 2492 - 2492 2019年02月

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DOI： 10.11470/jsapmeeting.2019.1.0_2492
Effect of non-chlorinated solvents on the enhancement of field-effect mobility in dioctylbenzothienobenzothiophene-based top-gate organic transistors processed by spin coating 査読

S. Sanda, R. Nakamichi, T. Nagase, T. Kobayashi, K. Takimiya, Y. Sadamitsu, H. Naito

Organic Electronics 雑誌 69 181 - 189 2019年02月

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共著区分：共著
Interfacial charges and electroluminescence in bilayer organic light-emitting diodes with different hole transport materials 査読

Shuri Sato, Makoto Takada, Daisuke Kawate, Masashi Takata, Takashi Kobayashi, Hiroyoshi Naito

Japanese Journal of Applied Physics 58 SFFA012/1 - SFFA012/5 2019年01月（ ISSN:0021-4922 ）

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掲載種別：研究論文（学術雑誌）

© 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 transport layers (HTLs). The four HTLs have almost identical highest occupied molecular orbital (HOMO) energy levels. The performance of the four OLEDs is not greatly changed. The interfacial charge density is determined from the hole injection voltage in the capacitance - voltage characteristics of the OLEDs. Determination of the interfacial charge density is verified by device simulation. The interfacial charge density is dependent on the HTL materials in Alq3-based OLEDs, and is proportional to the difference in dipole moments between the HTLs and electron transport layers including Alq3

DOI： 10.7567/1347-4065/ab0de7
Optical memory characteristics of solution-processed organic transistors with self-organized organic floating gates for printable multi-level storage devices 査読

F. Shiono, H. Abe, T. Nagase, T. Kobayashi, H. Naito

Organic Electronics 雑誌 67 109 - 115 2019年01月

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共著区分：共著
Temperature dependence of the intersystem crossing rate in thermally activated delayed fluorescence emitters

Takashi Kobayashi, Daisuke Kawase, Akitsugu Niwa, Atsumi Kayamyo, Takashi Nagase, Kenichi Goushi, Chihaya Adachi, Hiroyoshi Naito

2019 COMPOUND SEMICONDUCTOR WEEK (CSW) 2019年

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掲載種別：研究論文（国際会議プロシーディングス）
Enhanced field-effect mobility of top-gate organic transistors with channel length of 5 μm using solution-processed MoO3 hole injection layers 査読

T. Aiba, T. Nagase, T. Kobayashi, Y. Sadamitsu, H. Naito

Proceedings of the International Display Workshops 雑誌 25 721 - 722 2018年12月

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共著区分：共著
Enhanced Performance of Solution-Processable Organic Floating-Gate Transistor Memories using Binary Small Molecules Dispersed Polymer Storage Layers 査読

H. Abe, T. Nagase, T. Kobayashi, H. Naito

Proceedings of the International Display Workshops 雑誌 25 403 - 404 2018年12月

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共著区分：共著
Equivalent-Circuit Approach for the Interpretation of Modulus Spectra of Organic Field-Effect Transistors 査読

H. Naito, Y. Suenaga, T. Nagase, T. Kobayashi

Proceedings of the International Display Workshops 雑誌 25 253 - 256 2018年12月

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共著区分：共著
塗布形成した三酸化モリブデン正孔注入層を用いたトップゲート有機電界効果トランジスタの移動度改善査読

饗庭智也, 永瀬隆, 小林隆史, 貞光雄一, 内藤裕義

日本画像学会誌雑誌 57 537 - 542 2018年10月

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共著区分：共著
Determination of Interface-State Distributions in Polymer-Based Metal-Insulator-Semiconductor Capacitors by Impedance Spectroscopy 査読

H. Hatta, Y. Miyagawa, T. Nagase, T. Kobayashi, T. Hamada, S. Murakami, K. Matsukawa, H. Naito

Applied Sciences 雑誌 8 2018年08月

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共著区分：共著
Influence of Substrate Modification with Dipole Monolayers on the Electrical Characteristics of Short-Channel Polymer Field-Effect Transistors 査読

T. Nagase, T. Hirose, T. Kobayashi, R. Ueda, A. Otomo, H. Naito

Applied Sciences 雑誌 8 2018年08月

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共著区分：共著
Triplet-triplet annihilation in a thermally activated delayed fluorescence emitter lightly doped in a host 査読

A. Niwa, S. Haseyama, T. Kobayashi, T. Nagase, K. Goushi, C. Adachi, H. Naito

Applied Physics Letters 雑誌 113 2018年08月

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共著区分：共著
Effective Europium Coordination Luminophores Linked with Bi-and Tridentate Carbazole Phosphine Oxides for Organic Electroluminescent Devices 査読

Y. Hasegawa, S. Natori, J. Fukudome, T. Nagase, T. Kobayashi, T. Nakanishi, Y. Kitagawa, K. Fushimi, and H. Naito

Journal of Physical Chemistry C 雑誌 122 9599 - 9605 2018年04月

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共著区分：共著
High-performance didodecylbenzothienobenzothiophene-based top-gate organic transistors processed by spin coating using binary solvent mixtures 査読

S. Sanda, T. Nagase, T. Kobayashi, K. Takimiya, Y. Sadamitsu, H. Naito

Organic Electronics 雑誌 58 306 - 312 2018年04月

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共著区分：共著
Emission properties of thermally activated delayed fluorescence emitters: analysis based on a four-level model considering a higher triplet excited state 査読

T. Kobayashi, A. Niwa, S. Haseyama, K. Takaki, T. Nagase, K. Goushi, C. Adachi, H Naito

Journal of Photonics for Energy 雑誌 SPIE 8 2018年02月

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共著区分：共著
Relation between active-layer thickness and power conversion efficiency in P3HT:PCBM inverted organic photovoltaics 査読

S. Nakami, T. Narioka, T. Kobayashi, T. Nagase, H. Naito

Journal of Physics: Conference Series 雑誌 Institute of Physics 924 2017年12月

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共著区分：共著
Solution-Processed Nonvolatile Optical Transistor Memory for Multi-Level Data Storage Devices

F. Shiono, T. Nagase, T. Kobayashi, H. Naito

Proceedings of the International Display Workshops 雑誌 International Display Workshops 24 1575 - 1576 2017年12月

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共著区分：共著
Enhanced Mobility of Top-Gate Dialkyl BTBT Transistors by Spin Coating from Non-Halogen Sol-vents

S. Sanda, T. Nagase, T. Kobayashi, K. Takimiya, Y. Sadamitsu, H. Naito

Proceedings of the International Display Workshops 雑誌 International Display Workshops 24 371 - 372 2017年12月

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共著区分：共著
Solution-processed organic field-effect transistors based on dinaphthothienothiophene precursor with chemically modified electrodes 査読

T. Nagase, S. Abe, T. Kobayashi, Y. Kimura, A. Hamaguchi, Y. Ikeda, and H. Naito

Journal of Physics: Conference Series 雑誌 Institute of Physics 924 2017年12月

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共著区分：共著
Electron injection in inverted organic light-emitting diodes with poly (ethyleneimine) electron injection layers 査読

M Takada, T Nagase, T Kobayashi, H Naito

Organic Electronics 雑誌 Elsevier 50 290 - 295 2017年11月

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共著区分：共著
異なる構造を有するポリエチレンイミンを電子注入層とした塗布型逆構造有機発光ダイオードの作製と特性評価査読

真弓隆洋、高田誠、森井克行、永瀬隆、小林隆史、内藤裕義

日本画像学会誌雑誌日本画像学会 56 483 - 488 2017年10月

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共著区分：共著
Photoluminescence Properties of Polymorphic Modifications of Low Molecular Weight Poly(3-hexylthiophene) 査読

T. Kobayashi, K. Kinoshita, A. Niwa, T. Nagase, H. Naito

Nanoscale Resarch Letters 雑誌 Springer 12 2017年05月

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共著区分：共著
Control of the singlet-triplet energy gap in a thermally activated delayed fluorescence emitter by using a polar host matrix 査読

S. Haseyama, A. Niwa, T. Kobayashi, T. Nagase, K. Goushi, C. Adachi, H. Naito

Nanoscale Resarch Letters 雑誌 Springer 12 2017年04月

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共著区分：共著
Contributions of a higher triplet excited state to the emission properties of a thermally activated delayed-fluorescence emitter 査読

T. Kobayashi, A. Niwa, K. Takaki, S. Haseyama, T. Nagase, K. Goushi, C. Adachi, H. Naito

Physical Review Applied 雑誌 Americaln Physical Society 7 2017年03月

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共著区分：共著
Organic floating-gate transistor memory based on solution-processed organic films

F. Shiono, T. Nagase, T. Kobayashi, H. Naito

Proceedings of the International Display Workshops 雑誌 International Display Workshops 23 1440 - 1441 2016年12月

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共著区分：共著
High mobility and operational stability of top-gate organic transistors based on solution-processable organic semiconductors

T. Nagase, K. Takagi, R. Nakamichi, T. Kobayashi, H. Naito

Proceedings of the International Display Workshops 雑誌 International Display Workshops 23 1380 - 1383 2016年12月

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共著区分：共著
Inverted organic light-emitting diodes with an electrochemically deposited zinc oxide electron injection layer 査読

M. Takada, S. Furuta, T. Kobayashi, T. Nagase, T. Shinagawa, M. Izaki, H. Naito

Journal of Applied Physics 雑誌 American Institute of Physics 120 2016年11月

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共著区分：共著
High operational stability of solution-processed organic field-effect transistors with top-gate configuration 査読

K. Takagi, T. Nagase, T. Kobayashi, H. Naito

Organic Electronics 雑誌 Elsevier 32 64 - 69 2016年05月

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共著区分：共著
Photoluminescence in a thermally activated delayed fluorescence emitter for organic light-emitting diodes 査読

A. Niwa, K. Takaki, T. Kobayashi, T. Nagase, K. Goushi, C. Adachi, and H. Naito

Journal of the Imaging Society of Japan 雑誌 The Imaging Society of Japan 55 143 - 148 2016年04月

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共著区分：共著
Effects of bimolecular recombination on impedance spectra in organic semiconductors: Analytical approach 査読

M. Takata, K. Takagi, T. Nagase, T. Kobayashi, H. Naito

Journal of Nanoscience and Nanotechnology 雑誌 American Scientific Publisher 16 3322 - 3326 2016年04月

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共著区分：共著
Fabrication of vertical molecular junction devices with conductive polymer contacts using a peeling method 査読

Y. Konishi, T. Nagase, T. Kobayashi, R. Ueda, T. Terui, A. Otomo, H. Naito

Journal of Nanoscience and Nanotechnology 雑誌 American Scientific Publisher 16 3307 - 3311 2016年04月

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共著区分：共著
Simple Calculation of Power Conversion Efficiency of PC61BM and PC71BM Based Organic Solar Cells—Good Agreement with Experiments in Donor Materials with Different Band Gap Energies 査読

T. Otsura, E. Nakatsuka, T. Nagase, T. Kobayashi, H. Naito

Journal of Nanoscience and Nanotechnology 雑誌 American Scientific Publisher 16 3349 - 3354 2016年04月

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共著区分：共著
Determination of deep trapping lifetime in organic semiconductors using impedance spectroscopy 査読

K. Takagi, T. Nagase, T. Kobayashi, and H. Naito

Appl. Phys. Lett 雑誌 American Institute of Physics 108 2016年02月

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共著区分：共著
塗布プロセスにより製膜した金属酸化物を有する有機発光ダイオードの作製査読

高田誠、古田卓、小林隆史、永瀬隆、品川勉、伊崎昌伸、内藤裕義

日本画像学会誌雑誌日本画像学会 55 3 - 8 2016年02月

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共著区分：共著
Write-once memory effects observed in Ga-doped ZnO/organic semiconductor/MoO3/Au structures

J. Hasegawa, T. Nagase, T. Kobayashi, and H. Naito

Jpn. J. Appl. Phys. 雑誌 The Japan Society of Applied Physics 55 2016年02月

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共著区分：共著
Inverted organic light-emitting diodes using diﬀerent transparent conductive oxide ﬁlms as a cathode

M. Takada, T. Kobayashi, T. Nagase, and H. Naito

Jpn. J. Appl. Phys. 雑誌 The Japan Society of Applied Physics 55 2016年02月

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共著区分：共著
Effects of silica nanoparticle addition on polymer semiconductor wettability and carrier mobility in solution-processable organic transistors 査読

T. Nagase, M. Yoshikawa, S. Yamazaki, T. Kobayashi, Y. Michiwaki, S. Watase, M. Watanabe, K. Matsukawa, and H. Naito

J. Poly. Sci. Part B 雑誌 Wiley 54 509 - 516 2016年01月

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共著区分：共著
Fabrication of multi-layer inverted organic light emitting diodes by a spin coating method

J. Hasegawa, M. Takada, T. Nagase, T. Kobayashi, and H. Naito

Proceedings of the 22nd International Display Workshop 雑誌 International Display Workshops 706 - 709 2015年12月

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共著区分：共著
塗布プロセスにより作製した高性能トップゲート型有機薄膜トランジスタ

高木謙一郎、永瀬隆、小林隆史、内藤裕義

電気材料技術雑誌雑誌電気材料技術懇談会 24 16 - 23 2015年12月

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共著区分：共著
Control and improvement of electrical performance of solution-processable organic transistors by spin coating from mixed organic solvents

R. Nakamichi, T. Nagase, T. Kobayashi, Y. Sadamitsu and H. Naito

Proceedings of the 22nd International Display Workshop 雑誌 International Display Workshops 1419 - 1423 2015年12月

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共著区分：共著
Characterization of transport properties of organic semiconductors using impedance spectroscopy 査読

K. Takagi, S. Abe, T. Nagase, T. Kobayashi, and H. Naito

J. Mater. Sci.: Mater. Electron. 雑誌 Springer 26 4463 - 4474 2015年07月

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共著区分：共著
Photoluminescence in a thermally activated delayed fluorescence emitter for organic light-emitting diodes

A. Niwa, K. Takaki, T. Kobayashi, T. Nagase, K. Goushi, C. Adachi, and H. Naito

Proceedings of the 1st International Conference on Advanced Imaging 雑誌 International Conference of Advanced Imaging 221 - 224 2015年06月

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共著区分：共著
High mobility and operational stability of polymer field-effect transistors based on a top-gate configuration

K. Takagi, T. Nagase, T. Kobayashi, and H. Naito

Proceedings of the 1st International Conference on Advanced Imaging 雑誌 International Conference of Advanced Imaging 217 - 220 2015年06月

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共著区分：共著
Optical properties of three differently colored crystal modifications of a 2,3-dicyanopyrazine dye 査読

N. Okada, R. Eto, E. Horiguchi-Babamoto, T. Kobayashi, H. Naito, M. Shiro, H. Takahashi, and S. Matsumoto

Bull. Chem. Soc. Jpn 雑誌 The Chemical Society of Japan 88 716 - 721 2015年05月

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共著区分：共著
非ハロゲン系溶媒を用いたベンゾチエノベンゾチオフェン有機電界効果トランジスタの高性能化査読

中道諒介、木村友、永瀬隆、小林隆史、瀧宮和男、濱田雅裕、内藤裕義

日本画像学会誌雑誌日本画像学会 54 109 - 114 2015年04月

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共著区分：共著
High-performance and electrically stable solution-processed polymer field-effect transistors using a top-gate configuration 査読

K. Takagi, T. Nagase, T. Kobayashi, T. Kushida, H. Naito

Jpn. J. Appl. Phys 雑誌 The Japan Society of Applied Physics 54 2015年01月

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共著区分：共著
Soluble Organic Semiconductor Precursor with Specific Phase Separation for High-Performance Printed Organic Transistors 査読

Y. Kimura, T. Nagase, T. Kobayashi, A. Hamaguchi, Y. Ikeda, T. Shiro, K. Takimiya, H. Naito

Adv. Mater. Wiley 27 727 - 732 2015年01月

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共著区分：共著
Stable electrical characteristics of solution processed amorphous InZnO thin-film transistors with organic passivation layers

J. Okada, T. Nagase, T. Kobayashi, H. Naito

Proceedings of the 21st International Display Workshop 雑誌 International Display Workshops 2014年12月

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共著区分：共著
High-mobility solution-processed organic field-effect transistors with channel length of 5 μm

R. Nakamichi, T. Nagase, T. Kobayashi, Y. Sadamitsu, H. Naito

Proceedings of the 21st International Display Workshop 雑誌 International Display Workshops 2014年12月

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共著区分：共著
塗布型有機電界効果トランジスタの移動度の温度依存性に関する一考察査読

岡田純、永瀬隆、小林隆史、瀧宮和男、池田征明、内藤裕義

日本画像学会誌雑誌日本画像学会 53 392 - 397 2014年10月

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共著区分：共著
光誘導吸収測定による有機薄膜太陽電池の移動度評価

小林隆史、永瀬隆、内藤裕義

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雑誌応用物理学会　有機分子・バイオエレクトロニクス分科会 25 141 - 144 2014年05月

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共著区分：共著
Electrical characterization of thieno[3,4-b]thiophene and benzodithiophene copolymer using field-effect transistor configuration 査読

K. Takagi, T. Nagase, T. Kobayashi, and H. Naito

Jpn. J. Appl. Phys 雑誌 The Japan Society of Applied Physics 53 2014年05月

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共著区分：共著
Temperature dependence of photoluminescence properties in a thermally activated delayed fluorescence emitter 査読

A. Niwa, T. Kobayashi, T. Nagase, K. Goushi, C. Adachi, and H. Naito

Appl. Phys. Lett 雑誌 American Institute of Physics 104 2014年05月

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共著区分：共著
Third-order optical susceptibility in polythiophene thin films prepared by spin-coating from high-boiling-point solvents 査読

T. Kobayashi, W. Shinke, T. Nagase, S. Murakami, H. Naito

Thin Solid Films 雑誌 Elsevier 554 2014年03月

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共著区分：共著
Impedance spectroscopy for high resolution measurements of energetic distributions of localized states in organic semiconductor 査読

H. Hase, T. Okachi, S. Ishihara, T. Nagase, T. Kobayashi, H. Naito

Thin Solid Films 雑誌 Elsevier 554 2014年03月

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共著区分：共著
Continuous-wave photoinduced absorption study on trapped carriers in bulk-heterojunction solar cells connected to load 査読

Y. Terada, T. Kobayashi, E. Nakatsuka, T. Nagase, H. Naito

Thin Solid Films 雑誌 Elsevier 554 2014年03月

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共著区分：共著
High performance top-gate field-effect transistors based on poly(3-hexylthiophene) with different alkyl chain lengths 査読

K. Takagi, T. Nagase, T. Kobayashi, H. Naito

Organic Electronics 雑誌 Elsevier 15 372 - 377 2014年02月

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共著区分：共著
埋め込み電極を用いた塗布型有機電界効果トランジスタの高性能化査読

木村友, 永瀬隆, 小林隆史, 瀧宮和男, 池田征明, 内藤裕義

日本画像学会誌雑誌日本画像学会 53 3 - 8 2014年02月

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共著区分：共著
Effect of contact resistance on mobility determination by impedance spectroscopy 査読

M. Takata, N. Kouda, S. Ishihara, T. Nagase, T. Kobayashi, H. Naito

Japanese Journal of Applied Physics 雑誌 The Japan Society of Applied Physics 53 2014年02月

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共著区分：共著
Low Voltage Operation of Organic Field-Effect Transistors with Embedded Electrodes

Y. Kimura, T. Nagase, T. Kobayashi, K. Takimiya, M. Ikeda, H. Naito

Proceedings of the 20th International Display Workshop 雑誌 International Display Workshops 2013年12月

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共著区分：共著
Highly oriented polymer field-effect transistors with high electrical stability 査読

T. Endo, T. Nagase, T. Kobayashi, H. Naito

Japanese Journal of Applied Physics 雑誌 The Japan Society of Applied Physics 52 2013年12月

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共著区分：共著
Device performance of benzothienobenzothiophene-based top-gate organic field-effect transistors with embedded electrodes

Y. Kimura, F. Mochizuki, T. Nagase, T. Kobayashi, K. Takimiya, M. Ikeda, and H. Naito

Proceedings of the 19th International Display Workshops 雑誌 International Display Workshops 901 - 904 2012年12月

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共著区分：共著
Effect of MoO3 hole-injection layers on the performance of top-gate organic transistors based on soluble benzothienobenzothiophene derivatives

F. Mochizuki, Y. Miyata, T. Nagase, T. Kobayashi, K. Takimiya, M. Ikeda, and H. Naito

Proceedings of the 19th International Display Workshops 雑誌 International Display Workshops 1129 - 1132 2012年12月

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共著区分：共著
Charge transport in solution-processed top-gate organic thin-film transistors with different gate insulators

K. Takagi, T. Nagase, T. Kobayashi, and H. Naito

Proceedings of the 19th International Display Workshops 雑誌 International Display Workshops 905 - 908 2012年12月

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共著区分：共著
J-aggregate structure in a chloroform solvate of a 2, 3-dicyanopyrazine dye -Separation of two-dimensional stacking dye layers by solvate formation- 査読

S. Matsumoto, E. H. Babamoto, R. Eto, S. Sato, T. Kobayashi, H. Naito, M. Shiro, H. Takahashi

dyes and pigments 雑誌 Elsevier 95 2012年11月

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共著区分：共著
Third-order optical susceptibility of ordered and disordered polyfluorene thin films 査読

T. Kobayashi, T. Endo, T. Nagasea, S. Murakami, and H. Naito

J. Non-Crystalline Solids 雑誌 Elsevier 358 2530 - 2533 2012年09月

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2, 6-Dimethoxy-9, 10-anthraquinone 査読

A. Ohta, K. Hattori, T. Kobayashi, H. Naito, T. Kawase, and C. Kitamura

Acta Cryst. 雑誌 Wiley E68 2012年09月

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Effects of Alkoxy Substitution on the Optical Properties of 9, 10-Anthraquinone and Anthracene: 2, 3, 6, 7-Tetrapropoxy-substituted vs. 2, 6-Dipropoxy-substituted Derivatives 査読

A. Ohta, K. Hattori, Y. Kusumoto, T. Kawase, T. Kobayashi, H. Naito, and C. Kitamura

Chemistry Letters 雑誌 The Chemical Society of Japan 41 674 - 676 2012年07月

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2, 3, 6, 7-Tetramethoxy-9, 10-anthraquinone 査読

A. Ohta, K. Hattori, T. Kawase, T. Kobayashi, H. Naito and C. Kitamura

Acta Cryst. 雑誌 Wiley E68 2012年07月

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17,17-Dialkyltetrabenzo[a,c,g,i]fluorenes with extremely high solid-state fluorescent quantum yields: Relationship between crystal structure and fluorescent properties 査読

C. Kitamura, Y. Tanigawa, T. Kobayashi, H. Naito, H. Kurata, and T. Kawase

Tetrahedron 雑誌 Elsevier 68 1688 - 1694 2012年02月

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Determination of carrier lifetime in bulk-heterojunction solar cells by continuous-wave photoinduced absorption spectroscopy 査読

T. Kobayashi, Y. Terada, T. Nagase, and H. Naito

Appl. Phys. Express 雑誌 The Japan Society of Applied Physics 4 2011年12月

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Enhancement of Charge Mobility in Solution-Processed Organic Field-Effect Transistors Using Top-Gate Configurations

T. Nagase, K. Takagi, T. Kobayashi, T. Kushida, and H. Naito

Proceedings of the 18th International Display Workshops 雑誌 International Display Workshops 125 - 128 2011年12月

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High Hole Mobility Exceeding 4 cm2/Vs in Top-Gate C8-BTBT Field-Effect Transistors Processed by Spin Coating

F. Mochizuki, T. Endo, T. Nagase, T. Kobayashi, K. Takimiya, M. Ikeda, and H. Naito

Proceedings of the 18th International Display Workshops 雑誌 International Display Workshops 85 - 88 2011年12月

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Frequency Characteristics of Polymer Field-Effect Transistors with Self-Aligned Electrodes Investigated by Impedance Spectroscopy 査読

H. Hatta, T. Nagase, T. Kobayashi, M. Watanabe, K. Matsukawa, S. Murakami, and H. Naito

IEICE Transactions on Electronics 雑誌 IEICE E94-C 2011年11月

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1,7-Diethyl-4,10- diisopropyltetracene 査読

C. Kitamura, H. Kano, T. Kawase, T. Kobayashi, and H. Naito

Acta Crystallographica Section 雑誌 Wiley E67 2011年10月

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Highly Oriented J-Aggregates of Bisazomethine Dye on Aligned Poly(tetrafluoroethylene) Surfaces 査読

T. Tanaka, S. Matsumoto, T. Kobayashi, M. Satoh, and T. Aoyama

J. Phys. Chem. C 雑誌 American Chemical Society 115 19598 - 19605 2011年09月

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Enhancement of third-order optical susceptibility in polythiophene thin films fabricated by drop casting using anhydrous solvent 査読

T. Kobayashi, T. Endo, W. Shinke, T. Nagase, S. Murakami, and H. Naito

Jpn. J. Appl. Phys 雑誌 The Japan Society of Applied Physics 50 2011年07月

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Synthesis and Properties of anti/syn-Regioisomeric Mixtures of Alkyl-Substituted Tetracenes 査読

C. Kitamura, H. Kano, H. Tsukuda, T. Kawase, T. Kobayashi, and H. Naito

Heterocycles 雑誌 The Japan Institute of Heterocyclic Chemistry 83 1621 - 1629 2011年07月

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Octaalkyl tetracene-1,2,3,4,7,8,9,10-octacarboxylates: synthesis by twofold [2+2+2] cocyclization and crystallochromy 査読

C. Kitamura, A. Takenaka, T. Kawase, T. Kobayashi, and H. Naito

Chem. Commun 雑誌 Royal Society of Chemistry 47 6653 - 6655 2011年04月

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Oscillatory structure in the electroabsorption spectrum of π-conjugated polymer thin films: how to identify the Franz-Keldysh oscillation 査読

T. Kobayashi, T. Endo, S. Ikame, T. Nagase, S. Murakami, and H. Naito

J. Phys. Soc. Jpn. 雑誌 Physical Society of Japan 80 2011年03月

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Synthesis and Solid-state Optical Properties of 2,3-Dialkyl- and 2,3,8,9-Tetraakyltetracenes 査読

C. Kitamura, T. Ohara, A. Yoneda, T. Kawase, T. Kobayashi, H. Naito

Chemistry Letters 雑誌 The Chemical Society of Japan 40 58 - 59 2011年01月

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Continuous-wave photoinduced absorption studies in polythiophene and fullerene blended thin films 査読

T. Kobayashi, K. Kinoshita, T. Nagase, and H. Naito

Physcal Review B 雑誌 American Physica Society 83 2011年01月

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Organic-Inorganic Hybrid Materials for Flexible Thin-Film Transistors

H. Naito, T. Nagase, M. Yoshikawa, T. Kobayashi, Y. Michiwaki, K. Matsukawa

Proceedings of the 17th International Display Workshops 雑誌 International Display Workshops 1693 - 1696 2010年12月

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Solution-processed dioctylbenzothienobenzothiophene-based top-gate organic transistors with high mobility, low threshold voltage, and high electrical stability 査読

T. Endo, T. Nagase, T. Kobayashi, K. Takimiya, M. Ikeda, H. Naito

Applied Physics Express 雑誌 The Japan Society of Applied Physics 3 2010年12月

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Frequency Characteristics of Solution-Processed Organic Field-Effect Transistors with Self-Aligned Electrodes

T. Nagase, H. Hatta, Y. Miyagawa, T. Kobayashi, S. Murakami, M. Watanabe, K. Matsukawa, and H. Naito

Proceedings of the 17th International Display Workshops 雑誌 International Display Workshops 739 - 742 2010年12月

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Wettability Improvement by Silica Nanoparticle Addition in Solution-Processed TIPS-Pentacene Field-Effect Transistors

K. Matsukawa, S. Yamazaki, S. Tokai, M. Yoshikawa, T. Nagase, T. Kobayashi, Y. Michiwaki, S. Watase, M. Watanabe, and H. Naito

Proceedings of the 17th International Display Workshops 雑誌 International Display Workshops 869 - 872 2010年12月

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A low-temperature and highly reproducible fabrication process for high-mobility solution-processed small molecule field-effect transistors

T. Endo, T. Nagase, T. Kobayashi, K. Takimiya, M. Ikeda, and H. Naito

Proceedings of the 17th International Display Workshops 雑誌 International Display Workshops 2235 - 2238 2010年12月

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Low-Temperature Processable Organic-Inorganic Hybrid Gate Dielectrics for Solution-Based Organic Field-Effect Transistors 査読

T. Nagase, T. Hamada, K. Tomatsu, S. Yamazaki, T. Kobayashi, S. Murakami, K. Matsukawa, and H. Naito

Advanced Materials 雑誌 Wiley 22 4706 - 4710 2010年11月

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1,4,5,8-Tetra-n-butylanthracene 査読

C. Kitamura, H. Tsukuda, T. Kawase, T. Kobayashi, and H. Naito

Acta Cryst. 雑誌 Wiley E66 2010年09月

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Drastic Improvement in Wettability of 6,13-Bis(triisopropylsilylethynyl)pentacene by Addition of Silica Nanoparticles for Solution-Processable Organic Field-Effect Transistors 査読

S. Yamazaki, T. Hamada, T. Nagase, S. Tokai, M. Yoshikawa, T. Kobayashi, Y. Michiwaki, S. Watase, M. Watanabe, K. Matsukawa, and H. Naito

Applied Physics Express 雑誌 The Japan Society of Applied Physics 3 2010年09月

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Crystal Structure of 1,4,5,8-Tetrapentylanthracene 査読

C. Kitamura, H. Tsukuda, T. Kawase, T. Kobayashi, and H. Naito

Analytical Sciences: X-ray Structure Analysis Online 雑誌 The Japan Society for Analytical Chemistry 26 65 - 66 2010年09月

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Device characteristics of short-channel polymer field-effect transistors 査読

T. Hirose, T. Nagase, T. Kobayashi, R. Ueda, A. Otomo, and H. Naito

Appl. Phys. Lett 雑誌 American Institute of Physics 97 2010年08月

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1,4,5,8-Tetraisopropylanthracene 査読

C. Kitamura, H. Tsukuda, T. Kawase, T. Kobayashi, and H. Naito

Acta Cryst. 雑誌 Wiley E66 2010年08月

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Photoinduced absorption in P3HT/PCBM bulk heterostructures 査読

K. Kinoshita, T. Kobayashi, T. Nagase, and H. Naito

Materials Science Forum 雑誌 Trans Tech Publications 658 503 - 506 2010年07月

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Improvement of Wettability of Soluble Organic Semiconductors by Silica Nanoparticle Addition for Solution-Processable Organic Transistors

S. Yamazaki, T. Hamada, S. Tokai, M. Yoshikawa, T. Nagase, T. Kobayashi, Y. Michiwaki, S. Watase, M. Watanabe, K. Matsukawa, and H. Naito

Digest of Technical Papers of Active-Matrix Flatpanel Display and Devices 雑誌 The Japan Society of Applied Physics 2010年07月

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1,4,7,10-Tetraisoalkyltetracenes: Tuning of Solid-State Optical Properties and Fluorescence Quantum Yields by Peripheral Modulation 査読

C. Kitamura, H. Tsukuda, A. Yoneda, T. Kawase, T. Kobayashi, and H. Naito

Eur. J. Org. Chem. 雑誌 Wiley 13 3033 - 3040 2010年06月

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Synthesis, Optical Properties, and Crystal Structure of 1,4-Dipropyltetracene 査読

C. Kitamura, C. Matsumoto, A. Yoneda, T. Kobayashi, H. Naito, T. Komatsu

Eur. J. Org. Chem. 雑誌 Wiley 13 2571 - 2575 2010年05月

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High-mobility organic field-effect transistors based on soluble small molecules dispersed polymers

S. Wakuta, H. Hatta, M. Yoshikawa, T. Nagase, T. Kobayashi, M. Ikeda, K. Takimiya, and H. Naito

Proceeding of the 31st International Congress on Imaging Science 雑誌 Imaging Society of Japan 699 - 702 2010年05月

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Poly (3-hexylthiophene)-based field-effect transistors with silsesquioxane gate insulators

K. Tomatsu, T. Hamada, T. Nagase, S. Yamazaki, T. Kobayashi, S. Murakami, K. Matsukawa, and H. Naito

Proceeding of the 31st International Congress on Imaging Science 雑誌 Imaging Society of Japan 743 - 746 2010年05月

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Photodegradation dynamics of polyfluorene derivative studied by means of photoluminescence spectroscopy

M. Nakagawa, T. Kobayashi, T. Nagase, and H. Naito

Proceeding of the 31st International Congress on Imaging Science 雑誌 Imaging Society of Japan 775 - 778 2010年05月

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Photovoltaic properties of bisazomethine dye thin films 査読

T. Hosokai, T. Aoyama, T. Kobayashi, A. Nakao, S. Matsumoto

Chemical Physics Letter 雑誌 Elsevier 487 77 - 80 2010年02月

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Electroabsorption study of ordered polyfluorene thin films: Origin of oscillatory structure near the bottom of the continuum state 査読

T. Endo, S. Ikame, T. Kobayashi, T. Nagase, S. Murakami, and H. Naito

Physcal Review B 雑誌 American Physica Society 81 2010年01月

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Synthesis and Crystallochromy of 1,4,7,10-Tetraalkyltetracenes: Tuning of Solid-State Optical Properties of Tetracenes by Alkyl Side-Chain Length 査読

C. Kitamura, Y. Abe, T. Ohara, A. Yoneda, T. Kawase, T. Kobayashi, H. Naito, and T. Komatsu

Chemistry A European Journal 雑誌 Wiley 16 890 - 898 2010年01月

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Determination of Localized-State Distributions in Polyfluorene-based Light-Emitting layer by Impedance Spectroscopy

H. Hase, T. Okachi, T. Nagase, T. Kobayashi, and H. Naito

Proceedings of The 16th International Display Workshops 雑誌 International Display Workshops 1069 - 1072 2009年12月

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共著区分：共著
Device Characteristics of Nanoscale Organic Field-Effect Transistors

T. Nagase, T. Hirose, S. Nishigami, T. Kobayashi, R. Ueda, A. Otomo, and H. Naito

Proceedings of The 16th International Display Workshops 雑誌 International Display Workshops 1785 - 1788 2009年12月

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Preparation, Crystal Structure, and Solid-state Fluorescence of a CH2Cl2 Solvate Crystal of 6,13-Bis(t-butylphenyl)-2,3,9,10-tetrapropoxypentacene 査読

C. Kitamura, T. Naito, A. Yoneda, T. Kobayashi, H. Naito, T. Komatsu

Chemistry Letters 雑誌 The Chemical Society of Japan 38 600 - 601 2009年06月

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共著区分：共著
Determination of localized-state distributions in organic light-emitting diodes by impedance spectroscopy 査読

T. Okachi, T. Nagase, T. Kobayashi, H. Naito

Appl. Phys. Lett 雑誌 American Institute of Physics 94 2009年01月

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共著区分：共著
Simultaneous determination of localized-state distributions and charge-carrier mobility in organic light-emitting diodes by impedance spectroscopy

T. Okachi, T. Nagase, T. Kobayashi, H. Naito

Proceedings of The 15th International Display Workshops 雑誌 International Display Workshops 1021 - 1024 2008年12月

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共著区分：共著
Chemical design of polysilsesquioxane as a gate insulator for organic thin-film transistors

T. Hamada, S. Yamazaki, T. Nagase, K. Tomatsu, Y. Ueda, M. Watanabe, S. Watase, T. Tamai, T. Kobayashi, S. Murakami, H. Naito, K. Matsukawa

Proceedings of The 15th International Display Workshops 雑誌 International Display Workshops 1665 - 1668 2008年12月

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共著区分：共著
Determination of charge-carrier mobility in organic light-emitting diodes by impedance spectroscopy in presence of localized states 査読

T. Okachi, T. Nagase, T. Kobayashi, H. Naito

Jpn. J. Appl. Phys. 雑誌 The Japan Society of Applied Physics 47 8965 - 8972 2008年12月

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Effective Control of Surface Property on Polysilsesquioxane Films by Chemical Modification 査読

T. Hamada, T. Nagase, T. Kobayashi, K. Matsukawa, and H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 517 1335 - 1339 2008年09月

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Correlation between the crystallization of polyfluorene and the surface free energy of substrates 査読

T. Kobayashi, H. Uda, T. Nagase, M. Watanabe, K. Matsukawa, H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 517 1340 - 1342 2008年09月

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Anisotropic optical properties of aligned b-phase polyfluorene thin films 査読

T. Endo, T. Kobayashi, T. Nagase, H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 517 1324 - 1326 2008年09月

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共著区分：共著
Influence of injection barrier on the determination of charge-carrier mobility in organic light-emitting diodes by impedance spectroscopy 査読

T. Okachi, T. Nagase, T. Kobayashi, and H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 517 1331 - 1334 2008年09月

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共著区分：共著
Equivalent circuits of polymer light-emitting diodes with hole-injection layer studied by impedance spectroscopy 査読

T. Okachi, T. Nagase, T. Kobayashi, and H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 517 1327 - 1330 2008年09月

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共著区分：共著
Electrical characteristics of polymer field-effect transistors with poly(methylsilsesquioxane) gate dielectrics on plastic substrates 査読

S. Yamazaki, T. Hamada, K. Tomatsu , Y. Ueda , T. Nagase, T. Kobayashi, S. Murakami, K. Matsukawa , H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 517 1343 - 1345 2008年09月

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共著区分：共著
Study on a Facile Synthesis, Crystal Structure, and the Solid-State Fluorescence of Dicyclohexane-Annelated Anthracene 査読

C. Kitamura, C. Matsumoto, N. Kawatsuki, A. Yoneda, K. Asada, T. Kobayashi, and H. Naito

Bull Chem Soc Jpn 雑誌 The Chemical Society of Japan 81 2008年06月

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共著区分：共著
Fabrication of poly (3-hexylthiophene) field-effect transistors with poly(methylsilsesquioxane) gate dielectrics on plastic substrates

S. Yamazaki, T. Hamada, K. Tomatsu, Y. Ueda, T. Nagase, T. Kobayashi, S. Murakami, K. Matsukawa, H. Naito

Digest of Technical Papers of Active-Matrix Flatpanel Display and Devices 雑誌 The Japan Society of Applied Physics 149 - 152 2008年06月

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共著区分：共著
Device characteristics in polymer field-effect transistors with poly(methyl silsesquioxane) gate insulators

K. Tomatsu, T. Hamada, S. Yamazaki, T. Nagase, T. Kobayashi, S. Murakami, K. Matsukawa, H. Naito

Proceedings of Pan-Pacific Imaging Conference ’08 雑誌 The Imaging Society of Japan 372 - 374 2008年06月

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Analysis of time-of-flight transient photocurrent in organic semiconductors with coplanar-blocking-electrodes configuration 査読

T. Yoshikawa, T. Nagase, T. Kobayashi, S. Murakami, and H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 516 2595 - 2599 2008年05月

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共役系高分子の結晶化と光学応答

小林隆史、永瀬隆、内藤裕義

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雑誌応用物理学会　有機分子・バイオエレクトロニクス分科会 19 77 - 80 2008年05月

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A study of a- and b-phase poly(9, 9-dioctylfluorene) by electroabsorption spectroscopy 査読

T. Endo, S. Ikame, Y. Suzuki, T. Kobayashi, S. Murakami, and H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 516 2537 - 2540 2008年05月

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共著区分：共著
Fabrication and characterization of poly(3-hexylthiophene)-based field-effect transistors with silsesquioxane gate insulators 査読

K. Tomatsu, T. Hamada, T. Nagase, T. Kobayashi, S. Murakami, K. Matsukawa, and H. Naito

Jpn. J. Appl. Phys. 雑誌 The Japan Society of Applied Physics 47 3196 - 3199 2008年04月

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共著区分：共著
Preparation and optical properties of aligned beta-phase polyfluorene thin films 査読

T. Endo, T. Kobayashi, T. Nagase, and H. Naito

Jpn. J. Appl. Phys. 雑誌 The Japan Society of Applied Physics 46 1093 - 1095 2007年12月

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共著区分：共著
Influence of alkyl chain length on the solid-state packing and fluorescence of 1, 4, 5, 8-Tetra(alkyl)anthracenes 査読

C. Kitamura, Y. Abe, N. Kawatsuki, A. Yoneda, K. Asada, T. Kobayashi, and H. Naito

Molecular Crystals and Liquid Crystals 雑誌 Taylor and Francis group 474 119 - 135 2007年12月

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共著区分：共著
Optical Properties of Air-stable Semiconducting Copolymer Based on Polythiophene 査読

Y. Shimizu, T. Kobayashi, T. Nagase, and H. Naito

Appl. Phys. Lett. 雑誌 American Institute of Physics 91 2007年10月

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共著区分：共著
Conformational Polymorphism and Optical Properties in the Solid State of 1, 4, 7, 10-Tetra(n-butyl)tetracene 査読

C. Kitamura, T. Ohara, N. Kawatsuki, A. Yodeda, T. Kobayashi, H. Naito, T. Komatsu, and T. Kitamura

CrystEngComm 雑誌 ROYAL SOC CHEMISTRY 9 644 - 647 2007年08月

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共著区分：共著
Influence of the liquid carbazole concentration on charge trapping in C60 sensitized photorefractive polymers 査読

J. C. Ribierre, T. Aoyama, T. Kobayashi, T. Sassa, T. Muto, and T. Wada

J. Appl. Phys. 雑誌 American Institute of Physics 102 2007年08月

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共著区分：共著
Amplified spontaneous emission in α-phase and β-phase polyfluorene waveguides 査読

H. Azuma, T. Kobayashi, Y. Shim, N. Mamedov, and H. Naito

Organic Electronics 雑誌 Elsevier 8 184 - 188 2007年04月

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共著区分：共著
Electronic structure of a glassy poly(9,9-dioctylfluorene) thin film determined using linear and nonlinear spectroscopies 査読

S. Ikame, T. Kobayashi, S. Murakami, H. Naito

Physcal Review B 雑誌 American Physica Society 75 035209 - 1 2007年01月

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共著区分：共著
Impedance spectroscopy and equivalent circuits of polymer light-emitting diodes

T. Okachi, H. Azuma, T. Nagase, T. Kobayashi, H. Naito

Proceedings of The 13th International Display Workshops 2006 雑誌 Elsevier 1323 - 1326 2006年12月

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共著区分：共著
Optical nonlinearity of J-aggregates in vapor-deposited films of bisazomethine dye 査読

T. Kobayashi, S. Matsumoto, T. Aoyama, and T. Wada

Thin Solid Fiｌｍｓ雑誌 Elsevier 509 145 - 148 2006年05月

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共著区分：共著
Photoluminescence properties of facial- and meridional-Ir(ppy)3 thin films 査読

N. Ide, N. Matsusue, T. Kobayashi, and H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 509 164 - 167 2006年05月

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共著区分：共著
Fabrication of α- and β-phase poly(9,9-dioctylfluorene) thin films 査読

H. Azuma, K. Asada, T. Kobayashi, and H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 509 182 - 184 2006年05月

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共著区分：共著
Transient photocurrent of (silicon nanocrystals)-(organic polysilane) composites-detection of surface states of silicon nanocrystals 査読

M. Ando, T. Kobayashi, H. Naito, T. Nagase, and Y. Kanemitsu

Thin Solid Fiｌｍｓ雑誌 Elsevier 499 119 - 122 2006年03月

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共著区分：共著
Temperature dependence of photoluminescence in polyfluorene thin films - Huang-Rhys factors of as-coated, annealed and crystallized thin films - 査読

K. Asada, T. Kobayashi, and H. Naito

Thin Solid Fiｌｍｓ雑誌 Elsevier 499 192 - 195 2006年03月

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共著区分：共著
Crystal Structure of 5,12-Diphenyltetracene 査読

C. Kitamura, C. Matsumoto, N. Kawatsuki, A. Yoneda, T. Kobayashi, and H. Naito

Analytical Sciences: X-ray Structure Analysis Online 雑誌 The Japan Society for Analytical Chemistry 22 2006年03月

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共著区分：共著
Control of effective conjugation length in polyfluorene thin films 査読

K. Asada, T. Kobayashi, and H. Naito

Jpn. J. Appl. Phys. 雑誌 The Japan Society of Applied Physics 45 247 - 249 2006年03月

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共著区分：共著
Impedance spectroscopy of polymer light-emitting diodes

H. Azuma, T. Okachi, N. Watanabe, T. Kobayashi and H. Naito

Proceedings of The 12th International Display Workshops in conjunction with Asia Display 2005 雑誌 Elsevier 757 - 760 2005年12月

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共著区分：共著
Spectral shape of photoluminescence in luminescent p conjugated polymers 査読

T. Kobayashi, T. Endo, M. Rikukawa, K. Sanui, H. Kunugita, and K. Ema

Synth. Metals 雑誌 Elsevier 154 129 - 132 2005年09月

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共著区分：共著
Two-Beam Coupling Gain and Trap Density in Liquid Carbazole-Based Photorefractive Polymers 査読

T. Aoyama, J.-C. Ribierre, T. Sassa, T. Kobayashi, T. Muto, and T. Wada

Nonlinear Opt. Quant. Opt. 雑誌 Old City Publishing 34 151 - 154 2005年08月

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共著区分：共著
Morphological characteristics of J-aggregate films of bisazomethine dyes 査読

S. Matsumoto, M. Satoh, D. Tsuchida, T. Kobayashi, T. Aoyama, and T. Wada

Trans. MRS-J 雑誌 The Materials Research Society of Japan 30 345 - 348 2005年04月

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共著区分：共著
Temperature dependence of photoluminescence lifetime and quantum efficiency in neat Ir(ppy)3 Thin Films 査読

T. Kobayashi, N. Ide, N. Matsusue, and H. Naito

Jpn. J. Appl. Phys. 雑誌 The Japan Society of Applied Physics 44 1966 - 1969 2005年04月

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共著区分：共著
Photoluminescence properties of vapor deposited films of a bisazomethine dye 査読

T. Kobayashi, S. Matsumoto, T. Tanaka, H. Kunugita, K. Ema, T. Aoyama, and T. Wada

Phys. Chem. Chem. Phys. 雑誌 ROYAL SOC CHEMISTRY 7 1726 - 1731 2005年04月

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共著区分：共著
Optical properties of J-aggregates in vapor deposited films of a bisazomethine dye 査読

S. Matsumoto, T. Kobayashi, T. Aoyama and T. Wada

Trans. MRS-J 雑誌 The Materials Research Society of Japan 29 3171 - 3174 2004年11月

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共著区分：共著
9-(2-ethylhexyl)carbazole for carrier transport and photorefractive materials

T. Aoyama, J. -C. Ribierre, T. Sassa, T. Kobayashi, T. Muto, and T. Wada

Proceeding of SPIE 雑誌 SPIE 5521 2004年08月

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共著区分：共著
J-aggregates in vapor deposited films of a bisazomethine dye 査読

S. Matsumoto, T. Kobayashi, T. Aoyama, and T. Wada

Chem. Comm. 雑誌 Royal Society of Chemistry 1910 - 1911 2003年07月

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共著区分：共著
Coexistence of photoluminescence from two intrachain states in polythiophene films 査読

T. Kobayashi, J. Hamazaki, H. Kunugita, K. Ema, T. Endo, M. Rikukawa, and K. Sanui

Physcal Review B 雑誌 American Physica Society 67 205214 - 1 2003年05月

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共著区分：共著
Time-resolved photoluminescence measurement on polythiophene derivative 査読

T. Kobayashi, T. Wada, H. Kunugita, and K. Ema

RIKEN Review 雑誌 RIKEN 49 47 - 51 2002年11月

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共著区分：共著
Photoluminescence from the even-parity state in polythiophene derivative 査読

T. Kobayashi, J. Hamazaki, M. Arakawa H. Kunugita, T. Endo, M. Rikukawa, K. Sanui, and K. Ema

J. Phys. Soc. Jpn. 雑誌 Physical Society of Japan 70 2517 - 2520 2001年09月

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共著区分：共著
Radiative transition from even-parity state in conjugated polymer

T. Kobayashi, J. Hamazaki, M. Arakawa, H. Kunugita, K. Ema, K. Ochiai, M. Rikukawa, K. Sanui

Conference on Lasers and Electro-Optics Europe - Technical Digest 雑誌 IEEE 295 - 296 2001年05月

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共著区分：共著
Self-trapped exciton dynamics in highly ordered and disordered films of polythiophene derivative 査読

T. Kobayashi, J. Hamazaki, M. Arakawa, H. Kunugita, K. Ema, K. Ochiai, M. Rikukawa, and K. Sanui

Physcal Review B 雑誌 American Physica Society 62 8580 - 8583 2000年10月

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共著区分：共著
Photoluminescence dynamics in polythiophene derivative

T. Kobayashi, J. Hamazaki, M. Arakawa, H. Kunugita, K. Ema, K. Ochiai, M. Rikukawa, K. Sanui

IQEC, International Quantum Electronics Conference Proceedings 雑誌 2000年09月

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共著区分：共著
Self-trapped exciton dynamics in highly ordered and disorder films of polythiophene derivative

T. Kobayashi, J. Hamazaki, M. Arakawa, H. Kunugita, K. Ema, K. Ochiai, M. Rikukawa, K. Sanui

Nonlinear Optics: Materials, Fundamentals, and Applications, 2000. Technical Digest 雑誌 IEEE 377 - 379 2000年08月

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共著区分：共著
Distribution of the effective conjugation length of polythiophene determined by its absorption and |c(3)| spectra 査読

T. Kobayashi, J. Hamazaki, H. Kunugita, K. Ema, K. Ochiai, M. Rikukawa, and K. Sanui

J. Nonlinear Opt. Phys. Mat. 雑誌 WORLD SCIENTIFIC PUBL CO PTE LTD 9 55 - 61 2000年03月

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共著区分：共著
Spectra of |c(3)(w: w, w,- w)| at excitonic resonance in poly(3-[2-((S)-2-methylbutoxy) ethyl]thiophene) 査読

S. Kishino, T. Kobayashi, H. Kunugita, K. Ema, K. Ochiai, M. Rikukawa, and K. Sanui

Nonlinear Optics 雑誌 Gordon and Breach Science publishers 22 361 - 364 1999年09月

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共著区分：共著
Estimation of effective conjugation length in Poly(3-[2-((S)-2-methylbutoxy)ethyl] thiophene) by DFWM 査読

S. Kishino, Y. Ueno, K. Ochiai, M. Rikukawa, K. Sanui, T. Kobayashi, H. Kunugita, and K. Ema

Physcal Review B 雑誌 American Physica Society 58 13430 - 13433 1998年11月

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共著区分：共著

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書籍等出版物

Organic semiconductors for optoelectronics

T. Kobayashi, T. Nagase, H. Naito（担当：分担執筆 , 範囲: Ch.4 "Light absorption and emission properties of organic semiconductors"）

2021年（ ISBN:9781119146100 ）

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総ページ数：xviii, 364 p. 担当ページ：93-136 著書種別：学術書

Edited by H. Naito

CiNii Books
Optical Properties of Materials and Their Applications (2nd edition)

T. Kobayashi, H. Naito（担当：分担執筆 , 範囲: Ch.11 "Optical Properties of Organic Semiconductors"）

John Wiley & Sons Ltd 2020年01月（ ISBN:111950631X ）

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総ページ数：672 担当ページ：295-322 著書種別：学術書

Edited by J. Singh

ASIN
Electronic structures of planar and nonplanar polyfluorene

T. Kobayashi, T. Nagase, H. Naito（担当：共著）

Springer 2015年（ ISBN:978-981-287-130-5 ）

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担当ページ：63-80
塗布型ゲート絶縁膜の開発と塗布型有機FETの特性

永瀬隆, 濱田崇, 小林隆史, 松川公洋, 内藤裕義（担当：共著）

シーエムシー出版 2012年04月
有機エレクトロニクスの展開　最新開発状況と実用化への課題

小林隆史、内藤裕義（担当：共著）

情報機構 2007年09月

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担当ページ：162-171
有機エレクトロニクスにおける分子配向技術

小林隆史、内藤裕義（担当：共著）

シーエムシー出版 2007年04月

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担当ページ：73-80

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MISC（その他記事）

塗布型有機半導体デバイスの光電物性評価と機能デバイス開発

永瀬隆, 小林隆史, 内藤裕義

大阪公立大学研究推進機構放射線研究センター放射線施設共同利用報告書 2021 2022年

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J-GLOBAL
招待講演溶液プロセスにより形成される自己組織化構造を利用した有機トランジスタの高性能化と機能性有機デバイスの開発—有機エレクトロニクス

永瀬隆, 小林隆史, 内藤裕義

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 119 ( 103 ) 31 - 34 2019年07月（ ISSN:0913-5685 ）

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CiNii Article

産学官連携可能研究（シーズ）キーワード

熱活性化遅延蛍光材料
有機太陽電池
π共役系高分子
超高速分光
非線形光学分光

産学官連携可能研究（シーズ）概要

有機デバイスの動作機構に関する研究
有機材料を用いたデバイス開発
有機材料の基礎物性評価

担当授業科目

電磁気学2A

2023年度週間授業大学
有機光物理特論

2023年度週間授業大学院
電子物理工学概論1

2023年度週間授業大学
電子物理系特別演習第1（電子物性）

2023年度集中講義大学院
電子物理系特別研究第1（電子物性）

2023年度集中講義大学院
電子物理系特別研究第2（電子物性）

2023年度集中講義大学院
電子物理系特別演習第2（電子物性）

2023年度集中講義大学院

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ＦＤ活動

工学FDセミナー「高等学校における学習指導要領改定に伴う情報科教育の今」 2023年度

その他

研究職歴

2013年04月 - 2022年03月

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大阪府立大学大学院　工学研究科　電子・数物系専攻　電子物理工学分野　准教授
研究職歴

2007年04月 - 2013年03月

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大阪府立大学大学院　工学研究科　電子・数物系専攻　電子物理工学分野　助教
研究職歴

2004年04月 - 2007年03月

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大阪府立大学大学院　工学研究科　電子・数物系専攻　電子物理工学分野　助手