Updated on 2023/11/30

写真a

 
YOKOYAMA Daisuke
 
Title
Associate Professor
Contact information
メールアドレス
Laboratory Phone number
+81-238-26-3890
 
Laboratory Fax number
+81-238-26-3890
 

Research Areas

  • Nanotechnology/Materials / Thin film/surface and interfacial physical properties

  • Nanotechnology/Materials / Optical engineering and photon science

  • Nanotechnology/Materials / Fundamental physical chemistry

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment

  • Nanotechnology/Materials / Organic functional materials

  • Nanotechnology/Materials / Fundamental physical chemistry

  • Nanotechnology/Materials / Nanomaterials

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Graduating School

  • The University of Tokyo, Faculty of Science

    1998.03, Graduated

Graduate School

  • The University of Tokyo, Graduate School, Division of Science

    Master's Course, 2000.03, Completed

  • Kyushu University

    Doctor's Course, 2009.03, Completed

External Career

  • , Researcher, 2001.04 - 2007.01

  • Kyushu University, Assistant Professor, 2009.04 - 2009.12

  • Yamagata University, Associate Professor, 2016 -

Academic Society Affiliations

  • SPIE (International Society for Photo-optical Instrumentation Engineers)

  • MRS

 

Papers

  • Explicit analysis of functional group orientation in amorphous organic semiconductor films by using deuterated materials, Journal of Materials Chemistry C, 2022.10

    Yoshihito Sukegawa, Yuro Yagi, Hideyoshi Kitahara, Shunji Mochizuki, Daisuke Yokoyama

    Multiple Authorship (Only Japanese)

  • Model-free analysis of molecular orientation in amorphous organic semiconductor films for understanding its formation dynamics: methods and systematic investigation, Organic Electronics, 100 106377, 2021.10

    Yoshihito Sukegawa, Yoshiya Sakai, Daisuke Yokoyama

    Multiple Authorship (Only Japanese)

  • Active refractive index control using a stably evaporable perfluororesin for high-outcoupling-efficiency organic light-emitting diodes, Journal of Materials Chemistry C, 9(34) 11115-11125, 2021.07

    Daisuke Yokoyama, Tatsuki Sasaki, Yasutaka Suzuki, Takefumi Abe, Kaori Tsuruoka, Tatsuya Miyajima, Toshifumi Kakiuchi, Chiho Morita, Masaharu Aoki, Yasuhiro Ouchi, Wataru Aita, Yasuhiro Kuwana, Yutaka...

    Multiple Authorship (Only Japanese)

  • Effect of the conformer distribution on the properties of amorphous organic semiconductor films for organic light-emitting diodes, Physical Chemistry Chemical Physics, 23(26) 14242-14251, 2021.04

    Yoshihito Sukegawa, Kaito Sato, Wataru Fujiwara, Hiroshi Katagiri, Daisuke Yokoyama

    Multiple Authorship (Only Japanese)

  • Advantages and disadvantages of vacuum-deposited and spin-coated amorphous organic semiconductor films for organic light-emitting diodes, Journal of Materials Chemistry C, 3 11178-11191, 2015.09

    Maki Shibata, Yoshiya Sakai, Daisuke Yokoyama

    Multiple Authorship (Including Foreigners)

  • Wide-range refractive index control of organic semiconductor films toward advanced optical design of organic optoelectronic devices, Advanced Materials, 24 6368-6373, 2012.09

    Daisuke Yokoyama, Ken-ichi Nakayama, Toshiya Otani, Junji Kido

    Multiple Authorship (Including Foreigners)

  • Molecular orientation in small-molecule organic light-emitting diodes, Journal of Materials Chemistry, 21 19187-19202, 2011.12

    Daisuke Yokoyama

    Single Author

  • Molecular stacking induced by intermolecular C-H...N hydrogen bonds leading to high carrier mobility in vacuum-deposited organic films, Advanced Functional Materials, 21 1375-1382, 2011.03

    Daisuke Yokoyama, Hisahiro Sasabe, Yukio Furukawa, Chihaya Adachi, and Junji Kido

    Multiple Authorship (Including Foreigners)

  • Increased light outcoupling efficiency in dye-doped small molecule organic light-emitting diodes with horizontally oriented emitters, Organic Electronics, 12(5) 809-817, 2011.02

    Joerg Frischeisen, Daisuke Yokoyama, Ayataka Endo, Chihaya Adachi, and Wolfgang Bruetting

    Multiple Authorship (Including Foreigners)

  • Orientation control of linear-shaped molecules in vacuum-deposited organic amorphous films and its effect on carrier mobilities, Advanced Functional Materials, 20(3) 386-391, 2010.01

    Daisuke Yokoyama, Yousuke Setoguchi, Akio Sakaguchi, Michio Suzuki, and Chihaya Adachi

    Multiple Authorship (Including Foreigners)

  • Horizontal orientation of linear-shaped organic molecules having bulky substituents in neat and doped vacuum-deposited amorphous films, Organic Electronics, 10(1) 127-137, 2008.10

    Daisuke Yokoyama, Akio Sakaguchi, Michio Suzuki, and Chihaya Adachi

    Multiple Authorship (Including Foreigners)

  • Robust spirobifluorene core-based hole transporters with high mobility for long-life green phosphorescent organic light-emitting devices, Chemistry – A European Journal, e202202636, 2022.09

    Nagamura Natsuo, Sasabe Hisahiro, Sato Hiroki, Kamata Takahiro, Ito Nozomi, Araki Suguru, Abe Shoki, Sukegawa Yoshihito, Yokoyama Daisuke, Kaji Hironori, Kido Junji

    Multiple Authorship (Only Japanese)

  • Significant Sesitization of Polymer Solar Cells Utilizing Optical Interference, NIHON GAZO GAKKAISHI (Journal of the Imaging Society of Japan), 61(3) 210-218, 2022.06

    SAITO Masahiko, TAMAI Yasunari, YOSHIDA Hiroyuki, YOKOYAMA Daisuke, OHKITA Hideo, OSAKA Itaru

    Single Author

  • A multifunctional hole-transporter for high-performance TADF OLEDs and clarification of factors governing the transport property by multiscale simulation, Journal of Materials Chemistry C, 10(22) 8694-8701, 2022.06

    Natsuo Nagamura, Hisahiro Sasabe, Hiroki Sato, Takahiro Kamata, Nozomi Ito, Suguru Araki, Shoki Abe, Yoshihito Sukegawa, Daisuke Yokoyama, Hironori Kaji, Junji Kido

    Single Author

  • Four Dibenzofuran-Terminated High-Triplet-Energy Hole Transporters for High-Efficiency and Long-Life Organic Light-Emitting Devices, Chemistry - A European Journal, 28(13) e202104408, 2022.03

    Hisahiro Sasabe, Suguru Araki, Shoki Abe, Nozomi Ito, Kengo Kumada, Taito Noda, Yoshihito Sukegawa, Daisuke Yokoyama, Junji Kido

    Single Author

  • Molecular orientation anisotropy and hole transport properties of diluted semiconducting films of poly(p-phenylenevinylene) derivative, Organic Electronics, 96 106246, 2021.06

    Seiya Demura, Tatsuro Endo, Takumi Ishii, Daisuke Yokoyama, Yutaka Noguchi

    Multiple Authorship (Only Japanese)

  • Significantly Sensitized Ternary Blend Polymer Solar Cells with a Very Small Content of the Narrow-Band Gap Third Component That Utilizes Optical Interference, MACROMOLECULES, 53(23) 10623-10635, 2020.12

    Saito Masahiko, Tamai Yasunari, Ichikawa Hiroyuki, Yoshida Hiroyuki, Yokoyama Daisuke, Ohkita Hideo, Osaka Itaru

    Single Author

  • Simultaneous realization of high-efficiency, low-drive voltage, and long lifetime TADF OLEDs by multifunctional hole-transporters, JOURNAL OF MATERIALS CHEMISTRY C, 8(21) 7200-7210, 2020.06

    Kamata Takahiro, Sasabe Hisahiro, Ito Nozomi, Sukegawa Yoshihito, Arai Ayato, Chiba Takayuki, Yokoyama Daisuke, Kido Junji

    Single Author

  • Molecular Orientations of Delayed Fluorescent Emitters in a Series of Carbazole-Based Host Materials, FRONTIERS IN CHEMISTRY, 8 427, 2020.05

    Sasabe Hisahiro, Chikayasu Yuki, Ohisa Satoru, Arai Hiroki, Ohsawa Tatsuya, Komatsu Ryutaro, Watanabe Yuichiro, Yokoyama Daisuke, Kido Junji

    Single Author

  • A terpyridine-modified chrysene derivative as an electron transporter to improve the lifetime in phosphorescent OLEDs, JOURNAL OF MATERIALS CHEMISTRY C, 8(9) 3200-3205, 2020.03

    Owada Tsukasa, Sasabe Hisahiro, Sukegawa Yoshihito, Watanabe Taiki, Maruyama Tomohiro, Watanabe Yuichiro, Yokoyama Daisuke, Kido Junji

    Single Author

  • Electrical conduction mechanism in super-low-index hole transport layers comprising a fluorinated polymer, JSAP Annual Meetings Extended Abstracts, 2019.2(0) 2614, 2019.09

    Sasaki Tatsuki, Suzuki Yasutaka, Abe Takefumi, Tsuruoka Kaori, Kuwana Yasuhiro, Ouchi Yasuhiro, Demura Seiya, Yamaguchi Yuki, Ishii Hisao, Noguchi Yutaka, Yokoyama Daisuke

    Single Author

  • Control of Molecular Orientation in Organic Semiconductor Films using Weak Hydrogen Bonds, ADVANCED MATERIALS, 31(18) e1808300, 2019.05

    Watanabe Yuichiro, Yokoyama Daisuke, Koganezawa Tomoyuki, Katagiri Hiroshi, Ito Takashi, Ohisa Satoru, Chiba Takayuki, Sasabe Hisahiro, Kido Junji

    Single Author

  • Air-Stable and High-Performance Solution-Processed Organic Light-Emitting Devices Based on Hydrophobic Polymeric Ionic Liquid Carrier-Injection Layers, ADVANCED MATERIALS, 30(18) e1705915, 2018.05

    Sato Shugo, Ohisa Satoru, Hayashi Yukihiro, Sato Ryo, Yokoyama Daisuke, Kato Tetsuya, Suzuki Michinori, Chiba Takayuki, Pu Yong-Jin, Kido Junji

    Single Author

  • Horizontally orientated stick-like emitters: Achieving enhancement of intrinsic out-coupling factor and electroluminescence device performance, Chemistry of Materials, 29 8630-8636, 2017.10

    Ming Liu, Ryutaro Komatsu, Xinyi Cai, Katsuyuki Hotta, Shugo Sato, Kunkun Liu, Dongcheng Chen, Yuki Kato, Hisahiro Sasabe, Satoru Ohisa, Yoshiyuki Suzuri, Daisuke Yokoyama, Shi-Jian Su, Junji Kido

    Multiple Authorship (Including Foreigners)

  • Thermally activated delayed fluorescence OLEDs with fully solution processed organic layers exhibiting nearly 10% external quantum efficiency, Chemical Communications, 53 2439-2442, 2017.02

    Ken Albrecht, Kenichi Matsuoka, Daisuke Yokoyama, Yoshiya Sakai, Akira Nakayama, Katsuhiko Fujita, Kimihisa Yamamoto

    Multiple Authorship (Only Japanese)

  • Fundamental functions of peripheral and core pyridine rings in a series of bis-terpyridine derivatives for high-performance organic light-emitting devices, Journal of Materials Chemistry C, 4 8980-8988, 2016.08

    Yuichiro Watanabe, Ryo Yoshioka, Hisahiro Sasabe, Takahiro Kamata, Hiroshi Katagiri, Daisuke Yokoyama, Junji Kido

    Multiple Authorship (Including Foreigners)

  • Excimer emission based on the control of molecular structure and intermolecular interactions, Journal of Materials Chemistry C, 4 2784-2792, 2016.01

    Jaehyun Lee, Hyocheol Jung, Hwangyu Shin, Joonghan Kim, Daisuke Yokoyama, Hidetaka Nishimura, Atsushi Wakamiya, Jongwook Park

    Multiple Authorship (Including Foreigners)

  • Syntheses, properties, and OLED characteristics of 2,2'-bipyridine-based electron-transport materials: synergistic effect of molecular shape anisotropy and a weak hydrogen-bonding network on molecular orientation, Journal of Materials Chemistry C, 4 3699-3704, 2015.12

    Yuichiro Watanabe, Hisahiro Sasabe, Daisuke Yokoyama, Teruo Beppu, Hiroshi Katagiri, Junji Kido

    Multiple Authorship (Including Foreigners)

  • A series of fluorinated phenylpyridine-based electron-transporters for blue phosphorescent OLEDs, Journal of Materials Chemistry C, 4 1104-1110, 2015.12

    Takahiro Kamata, Hisahiro Sasabe, Yuichiro Watanabe, Daisuke Yokoyama, Hiroshi Katagiri, Junji Kido

    Multiple Authorship (Including Foreigners)

  • Photopatterning of indomethacin thin films: a solvent-free vapor-deposited photoresist, ACS Applied Materials & Interfaces, 7 23398-23401, 2015.09

    Katherine L. Camera, Jaritza Gomez-Zayas, Daisuke Yokoyama, Mark D. Ediger, Christopher K. Ober

    Multiple Authorship (Including Foreigners)

  • Simple model-free estimation of orientation order parameters of vacuum-deposited and spin-coated amorphous films used in organic light-emitting diodes, Applied Physics Express, 8 096601-1-096601-4, 2015.08

    Yoshiya Sakai, Maki Shibata, Daisuke Yokoyama

    Multiple Authorship (Including Foreigners)

  • Anisotropic materials in OLEDs for high outcoupling efficiency, Optics Express, 23 21128-21148, 2015.08

    Michiel Koen Callens, Daisuke Yokoyama, Kristiaan Neyts

    Multiple Authorship (Including Foreigners)

  • Extended-gate organic field-effect transistor for the detection of histamine in water, Japanese Journal of Applied Physics, 54 04DK02-1-04DK02-3, 2015.02

    Tsukuru Minamiki, Tsuyoshi Minami, Daisuke Yokoyama, Kenjiro Fukuda, Daisuke Kumaki, Shizuo Tokito

    Multiple Authorship (Including Foreigners)

  • High fill factor and thermal stability of bilayer organic photovoltaic cells with an inverted structure, Applied Physics Letters, 106 053305-1-053305-5, 2015.02

    Zhongqiang Wang, Ziruo Hong, Taojun Zhuang, Guo Chen, Hisahiro Sasabe, Daisuke Yokoyama, Junji Kido

    Multiple Authorship (Including Foreigners)

  • Simultaneous manipulation of intramolecular and intermolecular hydrogen bonds in n-type organic semiconductor layers: Realization of horizontal orientation in OLEDs, Advanced Optical Materials, 3 769-773, 2015.01

    Yuichiro Watanabe, Hisahiro Sasabe, Daisuke Yokoyama, Teruo Beppu, Hiroshi Katagiri, Yong-Jin Pu, Junji Kido

    Multiple Authorship (Including Foreigners)

  • An extended-gate type organic field effect transistor functionalised by phenylboronic acid for saccharide detection in water, Chemical Communications, 50 15613-15615, 2014.10

    Tsuyoshi Minami, Tsukuru Minamiki, Yuki Hashima, Daisuke Yokoyama, Tomohito Sekine, Kenjiro Fukuda, Daisuke Kumaki, Shizuo Tokito

    Multiple Authorship (Including Foreigners)

  • Excimer formation in organic emitter films associated with a molecular orientation promoted by steric hindrance, Chemical Communications, 50 14145-14148, 2014.07

    Jaehyun Lee, Beomjin Kim, Ji Eon Kwon, Joonghan Kim, Daisuke Yokoyama, Katsuaki Suzuki, Hidetaka Nishimura, Atsushi Wakamiya, Soo Young Park, Jongwook Park

    Multiple Authorship (Including Foreigners)

  • Esterification of indoline-based small-molecule donors for efficient co-evaporated organic photovoltaics, Journal of Physical Chemistry C, 118 14785-14794, 2014.06

    Zhongqiang Wang, Xiao-Feng Wang, Daisuke Yokoyama, Hisahiro Sasabe, Junji Kido, Zhaoyang Liu, Wenjing Tian, Osamu Kitao, Toshitaka Ikeuchi, Shin-ichi Sasaki

    Multiple Authorship (Including Foreigners)

  • Quantum yield in blue-emitting anthracene derivatives: vibronic coupling density and transition dipole moment density, Physical Chemistry Chemical Physics, 16 14244-14256, 2014.05

    Motoyuki Uejima, Tohru Sato, Daisuke Yokoyama, Kazuyoshi Tanaka, Jongwook Park

    Multiple Authorship (Including Foreigners)

  • Synthesis and electroluminescence properties of highly efficient blue fluorescence emitters using dual core chromophores, Journal of Materials Chemistry C, 1 432-440, 2013.01

    Beomjin Kim, Youngil Park, Jaehyun Lee, Daisuke Yokoyama, Ji-Hoon Lee, Junji Kido, Jongwook Park

    Multiple Authorship (Including Foreigners)

  • Highly efficient organic p-i-n photovoltaic cells based on tetraphenyldibenzoperiflanthene and fullerene C70, Energy and Environmental Science, 6 249-255, 2013.01

    Zhongqiang Wang, Daisuke Yokoyama, Xiao-Feng Wang, Ziruo Hong, Yang Yang, Junji Kido

    Multiple Authorship (Including Foreigners)

  • Optical and electrical properties of a squaraine dye in photovoltaic cells, Applied Physics Letters, 101 083904-1-083904-3, 2012.08

    Guo Chen, Daisuke Yokoyama, Hisahiro Sasabe, Ziruo Hong, Yang Yang, Junji Kido

    Multiple Authorship (Including Foreigners)

  • Optimizing the charge balance of fluorescent organic light-emitting devices to achieve high external quantum efficiency beyond the conventional upper limit, Advanced Materials, 24 1765-1770, 2012.03

    Yong-Jin Pu, Go Nakata, Fumiya Satoh, Hisahiro Sasabe, Daisuke Yokoyama, and Junji Kido

    Multiple Authorship (Including Foreigners)

  • Horizontal orientation of disk-like hole transport molecules and their application for organic light-emitting diodes requiring lower driving voltage, Journal of Physical Chemistry C, 116 8699-8706, 2012.03

    Jun-Yun Kim, Daisuke Yokoyama, and Chihaya Adachi

    Multiple Authorship (Including Foreigners)

  • High-efficiency simple planar heterojunction organic thin-film photovoltaics with horizontally oriented amorphous donors, Solar Energy Materials and Solar Cells, 98 472-475, 2011.11

    Daisuke Yokoyama, Zhong Qiang Wang, Yong-Jin Pu, Kenta Kobayashi, Junji Kido, and Ziruo Hong

    Multiple Authorship (Including Foreigners)

  • Dual efficiency enhancement by delayed fluorescence and dipole orientation in high-efficiency fluorescent organic light-emitting diodes, Applied Physics Letters, 99 123303-1-123303-3, 2011.09

    Daisuke Yokoyama, Youngil Park, Beomjin Kim, Sookang Kim, Yong-Jin Pu, Junji Kido, and Jongwook Park

    Multiple Authorship (Including Foreigners)

  • An integrated enzyme-linked immunosorbent assay system with an organic light-emitting diode and a charge-coupled device for fluorescence detection, Journal of Separation Science, 34 2906-2912, 2011.07

    Hizuru Nakajima, Yukiko Okuma, Kazuhiro Morioka, Mayo Miyake, Akihide Hemmi, Tatsuya Tobita, Masayuki Yahiro, Daisuke Yokoyama, Chihaya Adachi, Nobuaki Soh, Koji Nakano, Shuhua Xue, Hulie Zeng, Katsum...

    Multiple Authorship (Including Foreigners)

  • Influence of substituted pyridine rings on physical properties and electron mobilities of 2-methylpyrimidine skeleton-based electron-transporters, Advanced Functional Materials, 21(2) 336-342, 2010.10

    Hisahiro Sasabe, Daisaku Tanaka, Daisuke Yokoyama, Takayuki Chiba, Yong-Jin Pu, Ken-ichi Nakayama, Masaaki Yokoyama, and Junji Kido

    Multiple Authorship (Including Foreigners)

  • In situ real-time spectroscopic ellipsometry measurement for the investigation of molecular orientation in organic amorphous multilayer structures, Journal of Applied Physics, 107(12) 123512-1-123512-7, 2010.06

    Daisuke Yokoyama and Chihaya Adachi

    Multiple Authorship (Including Foreigners)

  • Determination of molecular dipole orientation in doped fluorescent organic thin films by photoluminescence measurements, Applied Physics Letters, 96(7) 073302-1-073302-3, 2010.02

    Joerg Frischeisen, Daisuke Yokoyama, Chihaya Adachi, and Wolfgang Bruetting

    Multiple Authorship (Including Foreigners)

  • Enhancement of electron transport by horizontal molecular orientation of oxadiazole planar molecules in organic amorphous films, Applied Physics Letters, 95(24) 243303-1-243303-3, 2009.12

    Daisuke Yokoyama, Akio Sakaguchi, Michio Suzuki, and Chihaya Adachi

    Multiple Authorship (Including Foreigners)

  • Thermally activated delayed fluorescence from Sn4+-porphyrin complexes and their application to organic light emitting diodes - a novel mechanism for electroluminescence, Advanced Materials, 21(47) 4802-4806, 2009.08

    Ayataka Endo, Mai Ogasawara, Atsushi Takahashi, Daisuke Yokoyama, Yoshimine Kato, and Chihaya Adachi

    Multiple Authorship (Including Foreigners)

  • Horizontal molecular orientation in vacuum-deposited organic amorphous films of hole and electron transport materials, Applied Physics Letters, 93(17) 173302-1-173302-3, 2008.10

    Daisuke Yokoyama, Akio Sakaguchi, Michio Suzuki, and Chihaya Adachi

    Multiple Authorship (Including Foreigners)

  • Spectrally narrow emission at cutoff wavelength from edge of optically and electrically pumped organic anisotropic films, Journal of Applied Physics, 103(12) 123104-1-123104-13, 2008.06

    Daisuke Yokoyama, Masato Moriwake, and Chihaya Adachi

    Multiple Authorship (Including Foreigners)

  • Spectrally narrow emission at cutoff wavelength from edge of electrically pumped organic light-emitting diodes, Japanese Journal of Applied Physics, 46 L826-L829, 2007.09

    Daisuke Yokoyama, Hajime Nakanotani, Yousuke Setoguchi, Masato Moriwake, Dai Ohnishi, Masayuki Yahiro, and Chihaya Adachi

    Multiple Authorship (Including Foreigners)

  • Three distinct solvated structures of p-nitroaniline in acetonitrile/CCl4 mixed solvents, Bulletin of the Chemical Society of Japan, 72(3) 389-395, 1999.01

    Kathaperumal Mohanalingam, Daisuke Yokoyama, Chihiro Kato, and Hiro-o Hamaguchi

    Multiple Authorship (Including Foreigners)

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Books

  • WOLEDs and Organic Photovoltaics, Springer, 2010.10

    Vivian W. W. Yam 編

Review Papers

  • ピリジン系電子輸送材料の能動的分子配向制御とGIWAXDによる検証, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 65th , 2018

    渡邊雄一郎, 笹部久宏, 笹部久宏, 笹部久宏, 小金澤智之, 片桐洋史, 片桐洋史, 大久哲, 大久哲, 大久哲, 横山大輔, 横山大輔, 城戸淳二, 城戸淳二, 城戸淳二

Grant-in-Aid for Scientific Research

  • Grant-in-Aid for Scientific Research(B),2022.04 - 2025.03

  • Grant-in-Aid for Scientific Research(B),2020.04 - 2022.03

  • Grant-in-Aid for Scientific Research(B),2018.04 - 2020.03