論文

2023

23-X
"Polymer Donor–Polymer Acceptor Solar Cells",
Hiroaki Benten, Daisuke Mori, Hideo Ohkita, Shinzaburo Ito,
Handook of Polymer and Hybrid Photovoltaics, Wiley.


23-06
"Exciton Dynamics of a Fused Ring π-Conjugated Nonfullerene Molecule Based on Dithienonaphthobisthiadiazole'',
Yuki Sato, Tsubasa Mikie, Hiroya Yamada, Itaru Osaka, Hideo Ohkita,
Jpn. J. Appl. Phys., 62[SK], SK1012_1-4 (2023).
DOI: 10.35848/1347-4065/acc66b

Spotlights 2023

23-05
"Facile Fabrication of Flexible Superhydrophobic Surfaces with High Durability and Good Mechanical Strength through Embedding Silica Nanoparticle into Polymer Substrate by Spraying Method'',
Shuhan Hou, Insub Noh, Xinlu Shi, Yanbin Wang, Hyung Do Kim, Hideo Ohkita, Biaobing Wang,
Colloids Surf. A: Physicochem. Eng. Asp., 664, 131181_1-12 (2023).
DOI: 10.1016/j.colsurfa.2023.131181

23-04
"Interplay Between π-Conjugated Polymer Donors and Acceptors Determines Crystalline Order of Their Blends and Photovoltaic Performance'',
Kodai Yamanaka, Masahiko Saito, Tomoyuki Koganezawa, Hayato Saito, Hyung Do Kim, Hideo Ohkita, Itaru Osaka,
Adv. Energy Mater., 13[13], 2203443_1-9 (2023).
DOI: 10.1002/aenm.202203443

Press Release

23-03
"What’s Next for Organic Solar Cells? The Frontiers and Challenges'',
Yasunari Tamai,
Adv. Energy Sustainability Res., 4, 2370001 (2023).
DOI: 10.1002/aesr.202370001

23-02
"Halogen-Free π-Conjugated Polymers Based on Thienobenzobisthiazole for Efficient Nonfullerene Organic Solar Cells: Rational Design for Achieving High Backbone Order and High Solubility'',
Naoya Nakao, Masahiko Saito, Tsubasa Mikie, Takumi Ichikawa, Jihun Jeon, Hyung Do Kim, Hideo Ohkita, Akinori Saeki, Itaru Osaka,
Adv. Sci., 10[5], 2205682_1-8 (2023).
DOI: 10.1002/advs.202205682

23-01
"Correlating the Structures and Photovoltaic Properties in Phase-Separated Blends of Conjugated Donor Polymers'',
Jihun Jeon, Kiyotaka Doi, Hyung Do Kim, Hiroki Ogawa, Mikihito Takenaka, Hideo Ohkita,
Polym. J., 55[4], 477-487 (2023).
DOI: 10.1038/s41428-022-00718-9


2022

22-17
"太陽電池材料",
大北英生,
高分子材料の事典, 高分子学会編, pp.212-213, 朝倉書店 (2022).

ISBN:978-4-254-25272-9

22-16
"Unlocking the Full Potential of Polymer-Based Solid-State Photon Upconversion'',
Yuji Sakamoto, Yasunari Tamai,
ECS J. Solid State Sci. Technol., 11, 121005 (2022).
DOI: 10.1149/2162-8777/acab84

22-15
"Charge Generation in Organic Solar Cells: Journey Toward 20% Power Conversion Efficiency'',
Yasunari Tamai,
Aggregate, 3, e280 (2022).
DOI: 10.1002/agt2.280
Special issue: Emerging Investigators (invited contribution) Front cover 

22-14
"Future Perspective of Polymer Solar Cells Based on Recent In-Depth Understanding of Photovoltaic Conversion Mechanism",
Hideo Ohkita,
JSAP Rev., 2022, 220207_1-7 (2022).
DOI: 10.11470/jsaprev.220207

22-13
"高分子太陽電池の光電変換素過程の解明と今後の展望",
大北英生,
応用物理, 91[11], 668-674 (2022).

DOI: 10.11470/oubutsu.91.11_668

22-12
"Triplet Sensitization via Charge Recombination at Organic Heterojunction for Efficient Near-Infrared to Visible Solid-State Photon Upconversion'',
Yuji Sakamoto, Seiichiro Izawa, Hideo Ohkita, Masahiro Hiramoto, Yasunari Tamai,
Commun. Mater., 3, 76 (2022).

DOI: 10.1038/s43246-022-00300-z

22-11
"光干渉を利用した増感作用による有機薄膜太陽電池の高効率化",
斎藤慎彦, 玉井康成, 吉田弘幸, 横山大輔, 大北英生, 尾坂格,
日本画像学会誌, 61[3], 210-218 (2022).
DOI: 10.11370/isj.61.210

22-10
"Nanomorphology Dependence of the Environmental Stability of Organic Solar Cells'',
Woong Sung, Hansol Lee, Wookjin Choi, Se Gyo Han, Jimin Kim, Kwangwoo Cho, Seung Hyun Kim, Dongki Lee, Hyung Do Kim, Hideo Ohkita, Kilwon Cho,  
NPG Asia Mat., 14[1], 56_1-14 (2022).
DOI: 10.1038/s41427-022-00400-9

22-9
"高分子太陽電池の高効率化を実現する新戦略",
大北英生,
光アライアンス, 33[8], 27-30 (2022).

22-8
"Delocalization Suppresses Nonradiative Charge Recombination in Polymer Solar Cells'',
Shin-ichiro Natsuda, Toshiharu Saito, Rei Shirouchi, Kenta Imakita,Yasunari Tamai,
Polym. J.,  54, 1345-1353 (2022).
DOI: 10.1038/s41428-022-00685-1

22-7
"Enhancing Multiwalled Carbon Nanotubes/Poly(amide-imide) Interfacial Strength through Grafting Polar Conjugated Polymer on Multiwalled Carbon Nanotubes'',
Zicheng Fan, Yanbin Wang, Jihun Jeon, Hyung Do Kim, Yawen Fang, Xinlu Shi, Zhonglin Luo, Hideo Ohkita, Biaobing Wang,
Surf. Interfaces, 32, 102130_1-11 (2022).
DOI: 10.1016/j.surfin.2022.102130

22-6
"Obvious Improvement of Dispersion of Multiwall Carbon Nanotubes in Polymer Matrix through Careful Interface Design'',
Chengbi Chang, Yanbin Wang, Yuya Horiuchi, Hyung Do Kim, Yawen Fang, Hideo Ohkita, Biaobing Wang,
Polym. Adv. Technol., 33[10], 3350-3358 (2022).
DOI: 10.1002/pat.5785

22-5
"Controlling the Charge Carrier Dynamics by Modulating the Orientation Diversity of Perovskites'',
Wonhee Cha, Won-Young Cha, Insub Noh, Shu Seki, Hideo Ohkita, Dongho Kim,
Mater. Chem. Front., 6[8], 1026-1032 (2022).
DOI: 10.1039/d1qm01586a

22-4
"高分子太陽電池における電圧損失機構",
大北英生, 齋藤俊晴, 玉井康成,
日本化学繊維研究所講演集, 79, 27-31 (2022).

22-3
"Intrachain Exciton Motion Can Compete with Interchain Hopping in Conjugated Polymer Films with a Strong J-Aggregate Property'',
Yasuhiro Murata, Yasunari Tamai,
J. Phys. Chem. Lett., 13[9], 2078-2083 (2022).
DOI: 10.1021/acs.jpclett.2c00226

22-2
"Cascaded Energy Landscape as a Key Driver for Slow yet Efficient Charge Separation with Small Energy Offset in Organic Solar Cells'',
Shin-ichiro Natsuda, Toshiharu Saito, Rei Shirouchi, Yuji Sakamoto, Taiki Takeyama, Yasunari Tamai, Hideo Ohkita,
Energy Environ. Sci., 15[4], 1545-1555 (2022).
DOI: 10.1039/D1EE03565G
Press Release
Press Release
Press Release

22-1
"Development of NIR Emissive Fully-Fused Bisboron Complexes with π-Conjugated Systems Including Multiple Azo Groups'',
Masashi Nakamura, Masayuki Gon, Shin-ichiro Natsuda, Yasunari Tamai, Hideo Ohkita, Kazuo Tanaka, Yoshiki Chujo,
Dalton Trans., 51[1], 74-84 (2022).
DOI: 10.1039/D1DT03652A


2021

21-11
"Effect of Terminal Group Halogenation of Naphthalene-Based Nonfullerene Acceptors on Their Film Structure and Photophysical and Photovoltaic Properties'',
Tomokazu Umeyama, Tastuho Wada, Kensho Igarashi, Kosaku Kato, Akira Yamakata, Taiki Takeyama, Yuji Sakamoto, Yasunari Tamai, Hideo Ohkita, Keiichi Ishida, Tomoyuki Koganezawa, Shunsuke Ohtani, Kazuo Tanaka, Hiroshi Imahori,
ACS Appl. Energy Mater., 4[12], 14022-14033 (2021).
DOI: 10.1021/acsaem.1c02816

21-10
"Pronounced Backbone Coplanarization by π-Extension in a Sterically Hindered Conjugated Polymer System Leads to Higher Photovoltaic Performance in Non-Fullerene Solar Cells'',
Naoya Nakao, Soichiro Ogawa, Hyung Do Kim, Hideo Ohkita, Tsubasa Mikie, Masahiko Saito, Itaru Osaka,
ACS Appl. Mater. Interfaces, 13[47], 56420-56429 (2021).
DOI: 10.1021/acsami.1c17199

21-9
"Singlet and Triplet Excited-State Dynamics of a Nonfullerene Electron Acceptor Y6'',
Shin-ichiro Natsuda, Yuji Sakamoto, Taiki Takeyama, Rei Shirouchi, Toshiharu Saito, Yasunari Tamai, Hideo Ohkita,
J. Phys. Chem. C, 125[38], 20806-20813 (2021).
DOI: 10.1021/acs.jpcc.1c06448

21-8
"Genetic Manipulation of M13 Bacteriophage for Enhancing the Efficiency of Virus-Inoculated Perovskite Solar Cells with a Certified Efficiency of 22.3%'',
Jiye Han, Kyusun Kim, Jeong-Seok Nam, Sung Jun Hong, Eun Jung Choi, Dawoon Kim, In Chung, Hao-Sheng Lin, Tae-Dong Kim, Michael S. Strano, Byungchan Han, Jin-Woo Oh, Hyung Do Kim, Il Jeon,
Adv. Energy Mater., 11[38], 2101221_1-10 (2021).
DOI: 10.1002/aenm.202101221

21-7
"Immediate and Temporal Enhancement of Power Conversion Efficiency in Surface-Passivated Perovskite Solar Cells'',
Yongyoon Cho, Jueming Bing, Hyung Do Kim, Yong Li, Jianghui Zheng, Shi Tang, Martin Green, Atsushi Wakamiya, Shujuan Huang, Hideo Ohkita, Anita Ho-Baillie,
ACS Appl. Mater. Interfaces, 13[33], 39178-39185  (2021).
DOI: 10.1021/acsami.1c06878

21-6
"Nongeminate Recombination in All-Polymer Solar Cells with Different Crystallinities'',
Hyung Do Kim, Yuya Horiuchi, Shinta Iwasaki, Tomohiro Fukuhara, Hideo Ohkita,
ACS Appl. Mater. Interfaces, 13[33], 39322-39330  (2021).
DOI: 10.1021/acsami.1c09592

21-5
"Molecular Understanding of How the Interfacial Structure Impacts the Open-Circuit Voltage of Highly Crystalline Polymer Solar Cells'',
Tomohiro Fukuhara, Koshi Yamazaki, Takuto Hidani, Masahiko Saito, Yasunari Tamai, Itaru Osaka, Hideo Ohkita,
ACS Appl. Mater. Interfaces, 13[29], 34357-34366 (2021).
DOI: 10.1021/acsami.1c08545

21-4
"Improved Hole-Transporting Properties in Conjugated Polymers Mixed with Polystyrene as an Insulating Polymer",
Yuya Horiuchi, Koshiro Midori, Hyung Do Kim, Hideo Ohkita,
J. Photopolym. Sci. Technol., 34[3], 291-296 (2021).
DOI: 10.2494/photopolymer.34.291 (Open Access)

21-3
"非フラーレン高分子太陽電池における開放電圧",
大北英生, キムヒョンド, 井手拓弥,
日本化学繊維研究所講演集, 78, 16-20 (2021).

21-2
"Prolongation of the Singlet Exciton Lifetime of Nonfullerene Acceptor Films by the Replacement of the Central Benzene Core with Naphthalene'',
Tomokazu Umeyama, Kensho Igarashi, Yasunari Tamai, Tatsuo Wada, Taiki Takeyama, Daiki Sasada, Keiichi Ishida, Tomoyuki Koganezawa, Shunsuke Ohtani, Kazuo Tanaka, Hideo Ohkita, Hiroshi Imahori,
Sustain. Energy Fuels, 5[7], 2028-2035 (2021).
DOI: 10.1039/d0se01861a

21-1
"Elucidating Mechanisms behind Ambient Storage-Induced Efficiency Improvements in Perovskite Solar Cells",
Yongyoon Cho, Hyung Do Kim, Jianghui Zheng, Jueming Bing, Yong Li, Meng Zhang, Martin A. Green, Atsushi Wakamiya, Shujuan Huang, Hideo Ohkita, Anita W. Y. Ho-Baillie,
ACS Energy Lett., 6[3], 925-933 (2021).
DOI: 10.1021/acsenergylett.0c02406
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Press Release