Updated on 2022/07/21

写真a

 
CHIBA Takayuki
 

Research Areas

  • Nanotechnology/Materials / Nanomaterials

Graduate School

  • Yamagata University, Faculty of Engineering

    Doctor's Course, 2006.03, Completed

  • Yamagata University, Graduate School of Science and Engineering

    Doctor's Course, 2008.03, Completed

  • Yamagata University, Graduate School of Science and Engineering

    Doctor's Course, 2011.03, Completed

External Career

  • Japan Society for the Promotion of Science, 2009.04 - 2011.03

  • Japan Society for the Promotion of Science, 2010.03 - 2010.09

 

Papers

  • High luminescence and external quantum efficiency in perovskite quantum-dots light-emitting diodes featuring bilateral affinity to silver and short alkyl ligands, CHEMICAL ENGINEERING JOURNAL, 414 , 2021.06

    Wei-Cheng Chen, Yu-Han Fang, Lung-Ghih Chen, Fang-Cheng Liang, Zhen-Li Yan, Hinako Ebe, Yoshihito Takahashi, Takayuki Chiba, Junji Kido, Chi-Ching Kuo

    Single Author

  • Stable blue perovskite light-emitting diodes achieved by optimization of crystal dimension through zinc bromide addition, CHEMICAL ENGINEERING JOURNAL, 414 , 2021.06

    Zhen-Li Yan, Jean-Sebastien Benas, Chu-Chen Chueh, Wei-Cheng Chen, Fang-Cheng Liang, Zhi-Xuan Zhang, Bi-Hsuan Lin, Chun-Jen Su, Takayuki Chiba, Junji Kido, Chi-Ching Kuo

    Single Author

  • Energy Transfer between Size-Controlled CsPbI3 Quantum Dots for Light-Emitting Diode Application, ACS Applied Materials & Interfaces, 14(15) 17691-17697, 2022.04

    Hinako Ebe, Ya-Kun Wang, Narumi Shinotsuka, Yu-Hong Cheng, Mizuho Uwano, Rikuo Suzuki, Yitong Dong, Dongxin Ma, Seungjin Lee, Takayuki Chiba, Edward H. Sargent, Junji Kido

    Single Author

  • Two-Step Crystallization for Low-Oxidation Tin-Based Perovskite Light-Emitting Diodes, ACS Applied Materials & Interfaces, 2022.01

    Yu-Hong Cheng, Reine Moriyama, Hinako Ebe, Kei Mizuguchi, Ryohei Yamakado, Shotaro Nishitsuji, Takayuki Chiba, Junji Kido

    Single Author

  • Energy Transfer from Blue-Emitting CsPbBr3 Perovskite Nanocrystals to Green-Emitting CsPbBr3 Perovskite Nanocrystals, The Journal of Physical Chemistry C, 125(35) 19368-19373, 2021.09

    Kazushi Enomoto, Risa Oizumi, Naoya Aizawa, Takayuki Chiba, Yong-Jin Pu

    Single Author

  • Neodymium Chloride-Doped Perovskite Nanocrystals for Efficient Blue Light-Emitting Devices, ACS APPLIED MATERIALS & INTERFACES, 12(48) 53891-53898, 2020.12

    Takayuki Chiba, Jun Sato, Shota Ishikawa, Yoshihito Takahashi, Hinako Ebe, Shunsuke Sumikoshi, Satoru Ohisa, Junji Kido

    Single Author

  • Simple Production of Highly Luminescent Organometal Halide Perovskite Nanocrystals Using Ultrasound-Assisted Bead Milling, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 8(44) 16469-16476, 2020.11

    Kazuki Umemoto, Hinako Ebe, Ryota Sato, Junya Enomoto, Naoaki Oshita, Taisei Kimura, Tomoko Inose, Takahiro Nakamura, Takayuki Chiba, Satoshi Asakura, Hiroshi Uji-I, Akito Masuhara

    Single Author

  • Surface Crystal Growth of Perovskite Nanocrystals via Postsynthetic Lead(II) Bromide Treatment to Increase the Colloidal Stability and Efficiency of Light-Emitting Devices, ACS APPLIED MATERIALS & INTERFACES, 12(40) 45574-45581, 2020.10

    Takayuki Chiba, Yoshihito Takahashi, Jun Sato, Shota Ishikawa, Hinako Ebe, Kota Tamura, Satoru Ohisa, Junji Kido

    Single Author

  • S-Vinyl Sulfide-Derived Pendant-Type Sulfone/Phenoxazine-Based Polymers Exhibiting Thermally Activated Delayed Fluorescence: Synthesis and Photophysical Property Characterization, ACS APPLIED POLYMER MATERIALS, 2(8) 3310-3318, 2020.08

    Jun Kosai, Yuki Masuda, Yuki Chikayasu, Yoshihito Takahashi, Hisahiro Sasabe, Takayuki Chiba, Junji Kido, Hideharu Mori

    Single Author

  • Blue Perovskite Nanocrystal Light-Emitting Devices via the Ligand Exchange with Adamantane Diamine, ADVANCED OPTICAL MATERIALS, 8(13) , 2020.07

    Takayuki Chiba, Shota Ishikawa, Jun Sato, Yoshihito Takahashi, Hinako Ebe, Satoru Ohisa, Junji Kido

    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

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

    Single Author

  • Synthesis of highly luminescent CH3NH3PbBr3 perovskite nanocrystals via a forced thin film reactor, JAPANESE JOURNAL OF APPLIED PHYSICS, 59 , 2020.06

    Masaki Takeda, Masaaki Yokoyama, Kazuki Umemoto, Bozhang Lyu, Yoshihito Takahashi, Sasiphapa Rodbuntum, Junya Enomoto, Keitaro Tozawa, Tomohiro Nohara, Keisuke Tabata, Ryota Sato, Takayuki Chiba, Sato...

    Single Author

  • Effects of alkylamine chain length on perovskite nanocrystals after washing and perovskite light-emitting diodes, JAPANESE JOURNAL OF APPLIED PHYSICS, 59 SDDC04-1-SDDC04-5, 2020.03

    Yuki Tezuka, Kazuki Umemoto, Masaki Takeda, Yoshihito Takahashi, Hinako Ebe, Junya Enomoto, Sasiphapa Rodbuntum, Tomohiro Nohara, Daniela Fontecha, Satoshi Asakura, Takayuki Chiba, Madalina Ioana Furi...

    Single Author

  • Doping of Tetraalkylammonium Salts in Polyethylenimine Ethoxylated for Efficient Electron Injection Layers in Solution-Processed Organic Light-Emitting Devices, ACS Applied Materials & Interfaces, 2019.07

    Ohisa Satoru, Suzuki Michinori, Chiba Takayuki, Kido Junji

    Single Author

  • A Solution-Processable Small-Molecule Host for Phosphorescent Organic Light-Emitting Devices, JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 29(2) 317-321, 2016

    Takayuki Chiba, Arata Fukada, Masahiro Igarashi, Tatsuya Hikichi, Satoru Ohisa, Yong-Jin Pu, Junji Kido

    Single Author

  • Solution-Processed Organic Light-Emitting Devices, Organic Electronics Materials and Devices, 195-219, 2015

    Takayuki Chiba, Yong-Jin Pu, Junji Kido

    Single Author

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Review Papers

  • Low Molecular Weight Materials: Electron Injection Materials, Handbook of Organic Light-Emitting Diodes, 1-8, 2021

    Takayuki Chiba, Yong-Jin Pu, Junji Kido

  • ペロブスカイトナノ結晶の 表面・組成置換とLED応用, 化学と工業, 2021

    千葉貴之

  • White OLED (WOLED) and Charge Generation Layer (CGL), Handbook of Organic Light-Emitting Diodes, 1-22, 2018

    Takayuki Chiba, Yong-Jin Pu, Junji Kido

  • Development of Solution-processed Phosphorescent-white Multi-SMOLED, Konica Minolta Technology Report, 15 95‐101, 2018.01

    及川和博, 檜山邦雅, 伊藤寛人, 北弘志, 大久哲, 千葉貴之, 城戸淳二

  • フレキシブル・エレクトロニクスの最新動向 塗布プロセスによる有機EL素子の多積層化 塗布プロセスによる多積層構造の形成と界面状態の評価, クリーンテクノロジー, 27(2) 9‐14, 2017.02

    千葉貴之, 大久哲, 城戸淳二

  • 塗布型マルチフォトン有機ELの開発, 工業材料, 2017

    千葉貴之

  • 塗布型有機ELデバイス, 最先端の有機EL -基礎物理・材料化学・デバイス応用と解析技術-, 2017

    千葉貴之, 夫勇進, 城戸淳二

  • Solution-Processed Organic Light-Emitting Devices, Organic Electronics Materials and Devices, 195-219, 2015

    Takayuki Chiba, Yong-Jin Pu, Junji Kido

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Industrial Property

  • , ORGANIC THIN-FILM LAMINATE AND ORGANIC ELECTROLUMINESCENCE ELEMENT

    Application number ( 特願US2016/15/738459 ) Publication number ( 特開US2018183011 ) Registration number ( 特許6796065 ) , Japan

Academic Awards Received

  • Award for Encouragement of Research in Polymer Science, 2021.05, Others

  • IDW '19 Best Paper Award, 2019.12, Others

  • 2018 Fall MRS Best Poster, 2018.11, Others, Takayuki Chiba

  • Yamagata Prefecture Science Technologies Encouragement Award, 2016.11, Others

  • KOBUNSHI RONBUNSHU, 2016.08, Others

Grant-in-Aid for Scientific Research

  • Grant-in-Aid for Scientific Research(C)，2020.04 - 2023.03

  • Grant-in-Aid for Scientific Research (A)，2015.04 - 2018.03，Ultra high efficiency organic-inorganic hybrid light emitting device

    All-inorganic perovskite (CsPbX3, X = Cl, Br, or I) quantum dots (QDs) have recently attracted considerable interest for light-emitting device (LED) applications such as thin film displays and solid-state lighting, owing to electroluminescence emission with narrow full width at half maximum (FWHM), tunable color properties in the visible light range, and ease of solution processability. Here, we demonstrated low driving voltage and high efficiency CsPbBr3 QDs light-emitting devices (QD-LEDs) using a ligand exchange method and washing process with an ester solvent c to remove excess ligands. The LED with ligand exchange CsPbBr3 QDs exhibited a low turn-on voltage of 2.6 V and EQE of 8.7%. Control of the interfacial perovskite QDs through ligand removal and energy level alignment in the device structure are promising methods for obtaining high PLQYs in film state and high device efficiency.

  • Grant-in-Aid for JSPS Fellows，2009 - 2010

Presentations

  • 2019 International Microprocesses and Nanotechnology Conference (MNC2019), International presentation, 2019.10, Highly luminescent perovskite nanocrystals by ultrasound-assisted bead milling and application for quantum dots light-emitting diodes, Oral presentation (general)

  • Smasys 2019, International presentation, 2019.10, Effect of Aromatic Ligands for Perovskite Nanocrystals and Their Optical Properties, Oral presentation (general)

  • 16th International Conference on Nanosciences & Nanotechnology (NN19), International presentation, 2019.07, Separation of mono-dispersed CH3NH3PbBr3 perovskite nanocrystals via Ostwald ripening, Poster presentation

  • M&BE10, International presentation, 2019.06, Preparing perovskite CH3NH3PbBr3 nanocrystals using various organic ligands for light-emitting diodes, Poster presentation

  • A-COE 2018, Hong Kong, International presentation, 2018.12, Tetrabutylammonium Salts-Doped Polyethyleneimine Ethoxylated Electron Injection Layers for Efficient Organic Light-Emitting Devices, Poster presentation

  • ICEL2018, Jeju, Korea, International presentation, 2018.10, Post-Treatment-Free Solution-Processed Reduced Phosphomolybdic Acid Containing Molybdenum Oxide Units for Efficient Hole-Injection Layers in Organic Light-Emitting Devices, Poster presentation

  • MRS 2017 Fall, Boston, USA, International presentation, 2017.11 - 2017.12, Air-Stable and High-Performance Solution-Processed Organic Light-Emitting Devices Based on Polymeric Ionic Liquids, Poster presentation

  • MRS 2017 Fall, Boston, USA, International presentation, 2017.11 - 2017.12, High-Efficiency Perovskite Quantum-Dot Light-Emitting Devices by Effective Washing Process and Interfacial Energy Level Alignment, Poster presentation

  • A-COE 2017, Daejeon, Korea, International presentation, 2017.10, Solution Processed Perovskite Quantum Dot LED using Ligand desorption Method, Poster presentation

  • Smasys 2017, Yonezawa, Japan, International presentation, 2017.10, Solution Processed Perovskite Quantum Dot LED using Ligand desorption Method, Poster presentation

  • IMID 2017, Busan, Korea, International presentation, 2017.08, High Efficiency Perovskite Quantum-Dot Light-Emitting Devices by Effective Washing Process, Oral presentation (invited, special)

  • SID 2017, Los Angels, USA, International presentation, 2017.05, Solution-processed polymer and small-molecule tandem organic light-emitting devices, Poster presentation

  • SPIE Optics + Photonics, San Diego, USA, International presentation, 2016.08 - 2016.09, Solution-processable electron injection materials for organic light-emitting devices, Oral presentation (invited, special)

  • IMID 2016, Jeju, Korea, International presentation, 2016.08, Solution-processed Tandem Organic Light-Emitting Devices, Oral presentation (invited, special)

  • The International Conference of Synthetic Metal 2016 (ICSM 2016), 広州, 中国, International presentation, 2016.06 - 2016.07, Solution-processed Tandem Organic Light-Emitting Devices, Poster presentation

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