論文・プロシーディングス (Publication)

2023年度 (FY 2023)

■ Fabrication and Characterization of Inverted Organic Light-Emitting Diodes With Low Driving Voltage Utilizing Upconversion Process

M. Okuda, T. Kinoshita, T. Kobayashi, H. Naito, and T. Nagase

Proceedings of the 30th International Workshop on Active-Matrix Flatpanel Displays and Devices, 176-177 (2023).

 

■ Optoelectronic Synaptic Characteristics of Organic Transistor Memories with Organic Semiconductor Floating Gates

K. Morikawa, S. Hattori, N. Nishida, T. Kobayashi, H. Naito, and T. Nagase

Proceedings of the International Display Workshops 30, 1120-1121 (2023).

 

■ Low-Voltage Driving of Inverted Organic Light-Emitting Diodes Utilizing Upconversion Process

M. Okuda, T. Kinoshita, Y. Izawa, T. Kobayashi, H. Naito, and T. Nagase

Proceedings of the International Display Workshops 30, 1187-1188 (2023).

 

■ 機械学習によるCdSe量子ドット赤色発光ダイオードの効率予測

木下喬之, 佐野翔一, 永瀬 隆, 小林隆史, 内藤裕義

日本画像学会誌 63, 3-11 (2024).

2022年度 (FY2022)

■ Instantaneous Determination of the Electronic Transport Properties of Polymer Light Emitting Diodes from their Complex Impedance Spectra using a Neural Network

Atsushi Okada, Takashi Nagase, Takashi Kobayashi, and Hiroyoshi Naito

Proceedings of the International Display Workshops 29, pp.486-488 (2022).

 

■ インピーダンススペクトルの高速測定と高速解析による有機デバイスの電子物性評価

岡田 淳之, 内藤 裕義

日本画像学会誌, 62 (1), pp.3-11 (2023).

2021年度 (FY2021)

■ Thiophene-based twisted bistricyclic aromatic ene with tricoordinate boron: a new n-type semiconductor

Yohei Adachi, Takanori Nomura, Shion Tazuhara, Hiroyoshi Naito, and Joji Ohshita

Chemical Communications 57,1316 (January 2021).

 

■ Revisiting open-circuit photovoltage decay in organic solar cells for the determination of bimolecular recombination constants

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

Japanese Journal of Applied Physics 60, 034001 (February 2021).

 

■ Electrically programmable multilevel nonvolatile memories based on solution-processed organic floating-gate transistors

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

Appl. Phys. Lett. 118, 103301 (March 2021).

 

■ Enhanced performance of solution-processable floating-gate organic phototransistor memory for organic image sensor applications

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

Applied Physics Express 14, 041007 (April 2021).

 

■ Understanding the influence of contact resistances on short-channel high-mobility organic transistors in linear and saturation regimes

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

Applied Physics Express 14, 041010 (April 2021).

 

■ 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 第60巻 第2号, pp.112-119 (April 2021). 

2020年度 (FY2020)

■ Intersystem Crossing Rate in Thermally Activated DelayedFluorescence Emitters

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

Phys. Status Solidi A2020,217, 1900616 (February 2020)

■ Interpretation of modulus spectra in organic field-effect transistors:equivalent-circuit approach

Yu Suenaga, Takashi Nagase, Takashi Kobayashi, and Hiroyoshi Naito

Jpn. J. Appl. Phys. 59 SDDA06(February 2020)

■ Equivalent Circuit of Organic Field-effect Transistors with Interface States

Yu Suenaga, Takashi Nagase, Takashi Kobayashi, and Hiroyoshi Naito

日本画像学会誌　第59号　第1号,18-27(February 2020)

■ Simultaneous determination of electron and hole drift mobilities in working inverted organic solar cells: modulated photocurrent spectroscopy versus impedance spectroscopy

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

Jpn. J. Appl. Phys. 59, 064002 (June 2020)

■ Modulated Photocurrent Spectroscopy Study of the Electronic Transport Properties of Working Organic Photovoltaics: Degradation Analysis

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

Materials 2020, 13(11), 2660(June 2020)

■ 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

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

Japanese Journal of Applied Physics 59, 094002 (August 2020)

■ Operation mechanism and efficiency-limiting factors in solution-processed quantum-dots light emitting diodes

Shoichi Sano, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

Organic Electronics 86,105865 (August 2020)

2019年度 (FY2019)

■ Lateral Alternating Donor/Acceptor Multilayered Junction for Organic Solar Cells

Mitsuru Kikuchi, Masaki Hirota, Thidarat Kunawong, Yusuke Shinmura, Masahiro Abe, Yuichi, Sadamitsu, Aye Myint Moh, Seiichiro Izawa, Masanobu Izaki, Hiroyoshi Naito, and Masahiro Hiramoto

ACS Applied Energy Materials, (February 2019)

■ Full characterization of electronic transport properties in working polymer light-emitting diodes via impedance spectroscopy

Makoto Takada, Takashi Nagase, Takashi Kobayashi, and Hiroyoshi Naito

J. Appl. Phys. 125, 115501, (March 2019)

■ Determination of bimolecular recombination constants in organic double-injection devices using impedance spectroscopy

[Editor’s picks（３月２５日）に選ばれました。]

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

Appl. Phys. Lett. 114, 123301, (March 2019)

■ Optical memory characteristics of solution-processed organic transistors with self-organized organic floating gates for printable multi-level storage devices

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

Organic Electronics 67, pp109-115, (April 2019)

■ Effect of non-chlorinated solvents on the enhancement of field-effect mobility in dioctylbenzothienobenzothiophene-based top-gate organic transistors processed by spin coating

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

Organic Electronics 69 pp181–189, (June 2019)

■ Interfacial charges and electroluminescence in bilayer organic light-emitting
diodes with different hole transport materials

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

Japanese Journal of Applied Physics 58, SFFA02 (2019)

■ Negative capacitance of bilayer organic light-emitting diodes—its correlation withcurrent efficiency and device lifetime

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

Japanese Journal of Applied Physics 58, SFFA01 (2019)

■ Modulated photocurrent spectroscopies for characterization of the charge transport process in organic photovoltaics

Hiroki Nojima, Takashi Kobayashi, Takashi Nagase, and Hiroyoshi Naito

Journal of Physics: Conference Series, Volume 1220, conference 1

■ Characterization of carrier transport properties in working polymer light-emitting diodes

Makoto Takada, Takashi Nagase, Takashi Kobayashi, Hiroyoshi Naito

SID 2019 DIGEST, 263-266 (2019)

■ Synthesis and Characterization of Soluble Directly 2,2′‐Linked Tetracene Dimer

Tasuku Honda, Masaya Nagahara, Naohiro Taka, Jun‐ichi Nishida, Takeshi Kawase, Katsuhiko Ono, Takashi Kobayashi, Hiroyoshi Naito, Chitoshi Kitamura

First published: 25 October 2018 https://doi.org/10.1002/ejoc.201801333

■ Modulated Photocurrent Spectroscopy for Determination of Electron and Hole Mobilities in Working Organic Solar Cells

Hiroki Nojima, Takashi Kobayashi, Takashi Nagase & Hiroyoshi Naito

Scientific Reports volume 9, Article number: 20346 (December 2019)

2018年度 (FY2018)

■ Control of Electrical Potential Distribution for High-Performance Perovskite Solar Cells

Molang Cai, Nobuyuki Ishida, Xing Li, Xudong Yang, Takeshi Noda, Yongzhen Wu, Fengxian Xie, Hiroyoshi Naito, Daisuke Fujita, Liyuan Han

Joule 2, 296-306, (2018)

■ Emission properties of thermally activated delayed fluorescence emitters: analysis based on a fourlevel model considering a higher triplet excited state

Takashi Kobayashi, Akitsugu Niwa, Shota Haseyama, Kensho Takaki, Takashi Nagase, Kenichi Goushi, Chihaya Adachi, Hiroyoshi Naito

J. of Photonics for Energy 8(3), 032104 (2018)

■ High-performance didodecylbenzothienobenzothiophene-based top-gate organic transistors processed by spin coating using binary solvent mixtures

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

Organic Electronics, Vol 58, pp 306-312, (2018)

■ Effective Europium Coordination Luminophores Linked with Bi-and Tridentate Carbazole Phosphine Oxides for Organic Electroluminescent Devices

Yasuchika Hasegawa, Shiori Natori, Jun Fukudome, Takashi Nagase, Takayuki Nakanishi, Yuichi Kitagawa, Koji Fushimi, Hiroyoshi Naito, and Takashi Kobayashi

J. Phys. Chem. C, 122 (17), pp 9599–9605, (2018)

■ Spectroscopic and electrical characterization of α,γ-bisdiphenylene-β-phenylallyl radical as an organic semiconductor

Yasunori Matsui, Minoru Shigemori, Toshiyuki Endo, Takuya Ogaki, Eisuke Ohta, Kazuhiko Mizuno, Hiroyoshi Naito, Hiroshi Ikeda

Res. Chem. Int., pp 4765-4774, (2018)

■ Beads-On-String-Shaped Poly(azomethine) Applicable for Solution Processing of Bilayer Devices Using a Same Solvent

Fujii Shunichi, Minami Saori, Urayama Kenji, Suenaga Yu, Naito Hiroyoshi, Miyashita Orito, Imoto Hiroaki, Naka Kensuke

J. of ACS Macro Letters, 7, pp 641–645, (2018)

■ Visualization of the carrier transport dynamics in layered Organic Light Emitting Diodes by Modulus spectroscopy

Jun-ichi Takahashi, Hiroyoshi Naito

Organic Electronics, 61, pp 10-17, (2018)

■ Influence of Substrate Modification with Dipole Monolayers on the Electrical Characteristics of Short-Channel Polymer Field-Effect Transistors

Takashi Nagase, Takeshi Hirose, Takashi Kobayashi, Rieko Ueda, Akira Otomo and Hiroyoshi Naito

Appl. Sci. 8, 1274 (2018)

■ Triplet-triplet annihilation in a thermally activated delayed fluorescence emitter lightly doped in a host

Akitsugu Niwa, Shota Haseyama, Takashi Kobayashi, Takashi Nagase, Kenichi Goushi, Chihaya Adachi and Hiroyoshi Naito

APPLIED PHYSICS LETTERS 113, 083301 (2018.8)

■ Determination of Interface-State Distributions in Polymer-Based Metal-Insulator-Semiconductor Capacitors by Impedance Spectroscopy

Hideyuki Hatta, Yuhi Miyagawa, Takashi Nagase, Takashi Kobayashi, Takashi Hamada, Shuichi Murakami, Kimihiro Matsukawa and Hiroyoshi Naito

Appl. Sci. 2018, 8, 1493 (2018.8)

■ 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

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 57, 5, pp 537-542 (2018.10)

■ Synthesis and Characterization of Soluble Directly 2,2′‐Linked Tetracene Dimer

Tasuku Honda, Masaya Nagahara, Naohiro Taka, Jun‐ichi Nishida, Takeshi Kawase, Katsuhiko Ono, Takashi Kobayashi, Hiroyoshi Naito, Chitoshi Kitamura

Eur. J. Org. Chem.2019, pp 2107–2114 (2018.10)