2020
20-14
"Charge Carrier Dynamics in Polymer Solar Cells",
Hideo Ohkita
Organic Solar Cells, M. Hiramoto, S. Izawa eds., pp. 123-154, Springer, Singapore (2020).
DOI: 10.1007/978-981-15-9113-6_6
20-13
"Significantly Sensitized Ternary Blend Polymer Solar Cells with a Very Small Content of the Narrow-Band Gap Third Component That Utilizes Optical Interference'',
Masahiko Saito, Yasunari Tamai, Hiroyuki Ichikawa, Hiroyuki Yoshida, Daisuke Yokoyama, Hideo Ohkita, Itaru Osaka
Macromolecules, 53[23], 10623-10635 (2020).
DOI: 10.1021/acs.macromol.0c01787
Press Release
20-12
"Sensitizer–Host–Annihilator Ternary-Cascaded Triplet Energy Landscape for Efficient Photon Upconversion in the Solid State'',
Yuji Sakamoto, Yasunari Tamai, Hideo Ohkita
J. Chem. Phys., 153[16], 161102_1-7 (2020).
DOI: 10.1063/5.0025438
20-11
"π-Conjugated Polymers and Molecules Enabling Small Photon Energy Loss Simultaneously with High Efficiency in Organic Photovoltaics'',
Masahiko Saito, Hideo Ohkita, Itaru Osaka
J. Mater. Chem. A, 8[39], 20213-20237 (2020).
DOI: 10.1039/d0ta05108j
20-10
"Nongeminate Charge Recombination in Organic Photovoltaics'',
Tomohiro Fukuhara, Yasunari Tamai, Hideo Ohkita
Sustain. Energy Fuels, 4[9], 4321-4351 (2020).
DOI: 10.1039/d0se00310g
20-9
"Sn(IV)-Free Tin Perovskite Films Realized by in situ Sn(0) Nanoparticle Treatment of the Precursor Solution',
Tomoya Nakamura, Shinya Yakumaru, Minh Anh Truong, Kyusun Kim, Jiewei Liu, Shuaifeng Hu, Kento Otsuka, Ruito Hashimoto, Richard Murdey, Takahiro Sasamori, Hyung Do Kim, Hideo Ohkita, Taketo Handa, Yoshihiko Kanemitsu, Atsushi Wakamiya
Nat. Commun., 11[1], 3008_1-8 (2020).
DOI: 10.1038/s41467-020-16726-3 (Open Access)
Press Release
20-8
"Role of Energy Offset in Nonradiative Voltage Loss in Organic Solar Cells'',
Toshiharu Saito, Shin-ichiro Natsuda, Kenta Imakita, Yasunari Tamai, Hideo Ohkita
Solar RRL, 4[9], 2000255_1-9 (2020).
DOI: 10.1002/solr.202000255 (Open Access)
20-7
"Two-Dimensional Exciton Diffusion in an HJ-Aggregate of Naphthobisoxadiazole-Based Copolymer Films'',
Yasuhiro Murata, Taiki Takeyama, Yuji Sakamoto, Kento Yamaguchi, Yasunari Tamai, Hideo Ohkita
J. Phys. Chem. C, 124[24], 13063-13070 (2020).
DOI: 10.1021/acs.jpcc.0c04057
20-6
"Delocalization Boosts Charge Separation in Organic Solar Cells'',
Yasunari Tamai
Polym. J., 52[7], 691-700 (2020).
DOI: 10.1038/s41428-020-0339-4
20-5
"結晶性高分子太陽電池における開放電圧",
大北英生, 玉井康成, 山嵜浩志, 部谷拓斗
日本化学繊維研究所講演集, 77, 44-48 (2020).
20-4
"Efficient Light-Harvesting, Energy Migration, and Charge Transfer by Nanographene-Based Nonfullerene Small-Molecule Acceptors Exhibiting Unusually Long Excited-State Lifetime in the Film State'',
Tomokazu Umeyama, Kensho Igarashi, Daiki Sasada, Yasunari Tamai, Keiichi Ishida, Tomoyuki Koganezawa, Shunsuke Ohtani, Kazuo Tanaka, Hideo Ohkita, Hiroshi Imahori
Chem. Sci., 11[12], 3250-3257 (2020).
DOI: 10.1039/c9sc06456g (Open Access)
Press Release
20-3
"Improvement of Exciton Collection and Light-Harvesting Range in Ternary Blend Polymer Solar Cells Based on Two Non-Fullerene Acceptors'',
Yanbin Wang, Changlong Zhuang, Yawen Fang, Hyung Do Kim, Huang Yu, Biaobing Wang, Hideo Ohkita
Nanomaterials, 10[2], 241_1-12 (2020).
DOI: 10.3390/nano10020241 (Open Access)
20-2
"Enhanced Charge Transport in Conjugated Polymer Blended with Insulating Polymer'',
Hyung Do Kim, Ryo Iriguchi, Tomohiro Fukuhara, Hiroaki Benten, Hideo Ohkita
Chem. Asian J., 15[6], 796-801 (2020).
DOI: 10.1002/asia.201901743 (Open Access)
20-1
"Impact of Noncovalent Sulfur-Fluorine Interaction Position on Properties, Structures, and Photovoltaic Performance in Naphthobisthiadiazole‐Based Semiconducting Polymer'',
Masahiko Saito, Tomohiro Fukuhara, Satoshi Kamimura, Hiroyuki Ichikawa, Hiroyuki Yoshida, Tomoyuki Koganezawa, Yutaka Ie, Yasunari Tamai, Hyung Do Kim, Hideo Ohkita, Itaru Osaka
Adv. Energy Mater., 10[7], 1903278_1-12 (2020).
DOI: 10.1002/aenm.201903278 (Open Access)
Press Release
2019
19-5
"Dithiazolylthienothiophene Bisimide: A Novel Electron-Deficient Building Unit for N-Type Semiconducting Polymers'',
Yoshikazu Teshima, Masahiko Saito, Tomohiro Fukuhara, Tsubasa Mikie, Kimihiro Komeyama, Hiroto Yoshida, Hideo Ohkita, Itaru Osaka
ACS Appl. Mater. Interfaces, 11[26], 23410-23416 (2019).
DOI: 10.1021/acsami.9b05361
19-4
"The Effect of 4-tert-Butylpyridine Removal on Efficiency and Thermal Stability in Perovskite Solar Cells",
Yongyoon Cho, Hideo Ohkita, Yong Li, Jueming Bing, Jianghui Zheng, Shujuan Huang, Anita Ho-Baillie
J. Photopolym. Sci. Technol., 32[5], 715-720 (2019).
DOI: 10.2494/photopolymer.32.715 (Open Access)
19-3
"Enhanced Hole Transport in Ternary Blend Polymer Solar Cells",
Koshiro Midori, Tomohiro Fukuhara, Yasunari Tamai, Hyung Do Kim, Hideo Ohkita
ChemPhysChem, 20[20], 2683-2688 (2019).
DOI: 10.1002/cphc.201900343
19-2
"高分子太陽電池の新展開",
大北英生, Hyung Do Kim, 玉井康成
高分子, 68[4], 174-178 (2019).
[Link]
19-1
"ブレンド膜における共役高分子の電荷輸送特性の向上",
大北英生, 入口亮
日本化学繊維研究所講演集, 76, 59-64 (2019).
[Link]
2018
18-10
"Ternary Blend Solar Cells Based on a Conjugated Polymer with Diketopyrrolopyrrole and Carbazole Units",
Yanbin Wang, Jinxing Chen, Hyung Do Kim, Biaobing Wang, Ryo Iriguchi, Hideo Ohkita
Front. Energy Res., 6, 113_1-9 (2018).
DOI: 10.3389/fenrg.2018.00113 (Open Access)
18-9
" “いろいろ”な材料を混ぜてつくる高分子太陽電池",
大北英生, キムヒョンド, 王艶賓
現代化学, [571], 60-64 (2018).
[Link]
18-8
"三元ブレンド高分子太陽電池",
大北英生
ケミカルエンジニヤリング, 63[9], 683-688 (2018).
18-7
"Ternary Blend Polymer Solar Cells Based on Wide-Bandgap Polymer PDCBT and Low-Bandgap Polymer PTB7-Th",
Hyung Do Kim, Ryosuke Shimizu, Hideo Ohkita
Chem. Lett., 47[8], 1059-1062 (2018).
DOI: 10.1246/cl.180420
18-6
"Charge Traps in Lead-Halide Perovskites with Different Grain Sizes",
Hyung Do Kim, Hideo Ohkita
Jpn. J. Appl. Phys., 57[8S3], 08RE03_1-5 (2018).
DOI: 10.7567/JJAP.57.08RE03
18-5
"Visible Sensitization for Non-Fullerene Polymer Solar Cells using a Wide Bandgap Polymer",
Yanbin Wang, Hyung Do Kim, Biaobing Wang, Hideo Ohkita
J. Photopolym. Sci. Technol., 31[2], 177-181 (2018).
DOI: 10.2494/photopolymer.31.177 (Open Access)
18-4
"Bimolecular Recombination and Fill Factor in Crystalline Polymer Solar Cells",
Tomohiro Fukuhara, Yasunari Tamai, Itaru Osaka, Hideo Ohkita
Jpn. J. Appl. Phys., 57[8S3], 08RE01_1-5 (2018).
DOI: 10.7567/JJAP.57.08RE01
18-3
"Quadrupolar D–A–D Diketopyrrolopyrrole-Based Small Molecule for Ternary Blend Polymer Solar Cells",
Yanbin Wang, Teng Wang, Jinxing Chen, Hyung Do Kim, Penghan Gao, Biaobing Wang, Ryo Iriguchi, Hideo Ohkita
Dyes Pig., 158[11], 213-218 (2018).
DOI: 10.1016/j.dyepig.2018.05.048
18-2
"Investigations on the Charge Transfer Mechanism at Donor/Acceptor Interfaces in the Quest for Descriptors of Organic Solar Cell Performance",
Azusa Muraoka, Mikiya Fujii, Kenji Mishima, Hiroki Matsunaga, Hiroaki Benten, Hideo Ohkita, Shinzaburo Ito, Koichi Yamashita
Phys. Chem. Chem. Phys., 20[17] 12193-12199 (2018).
DOI: 10.1039/C8CP01253A
18-1
"共役高分子膜における一重項分裂",
大北英生, 玉井康成, 笠井普文
日本化学繊維研究所講演集, 75, 42-49 (2018).
[Link]
2017
17-10
"Efficiency Limiting Factors in Perovskite Solar Cells'',
Hideo Ohkita, Hyung Do Kim
AM-FPD ‘17, 13-16 (2017).
17-9
"高分子太陽電池における励起子・キャリアダイナミクス",
大北英生, 玉井康成
光化学, 48[3], 139-146 (2017).
17-8
"Ultrafast Long-Range Charge Separation in Nonfullerene Organic Solar Cells",
Yasunari Tamai, Yeli Fan, Vincent O. Kim, Kostiantyn Ziabrev, Akshay Rao, Stephen Barlow, Seth R. Marder, Richard H. Friend, S. Matthew Menke
ACS Nano, 11[12], 12473-12481 (2017).
DOI: 10.1021/acsnano.7b06575
nanotech web
17-7
"高分子薄膜太陽電池における励起子および電荷ダイナミクス",
玉井康成
高分子論文集 高分子科学・工学のニューウェーブ –2017–, 74[5], 430-451 (2017).
DOI: 10.1295/koron.2017-0028 (Open Access)
17-6
"分光学的手法による有機薄膜太陽電池の評価技術",
大北英生
光技術動向調査報告書, 第6章第7節, pp.417-420,
一般財団法人光産業技術振興協会 (2017).
17-5
"Origin of Open-Circuit Voltage Loss in Polymer Solar Cells and Perovskite Solar Cells'',
Hyung Do Kim, Nayu Yanagawa, Ai Shimazaki, Masaru Endo, Atsushi Wakamiya, Hideo Ohkita, Hiroaki Benten, Shinzaburo Ito
ACS Appl. Mater. Interfaces, 9[23], 19988-19997 (2017).
DOI: 10.1021/acsami.7b03694
17-4
"Potential Improvement in Fill Factor of Lead-Halide Perovskite Solar Cells'',
Hyung Do Kim, Hideo Ohkita
Solar RRL, 1[6], 1700027_1-6 (2017).
DOI: 10.1002/solr.201700027
Advanced Science News
Back Cover
17-3
"Charge Transport in Intermixed Regions of All-Polymer Solar Cells Studied by Conductive Atomic Force Microscopy",
Miki Osaka, Daisuke Mori, Hiroaki Benten, Hiroki Ogawa, Hideo Ohkita, Shinzaburo Ito
ACS Appl. Mater. Interfaces, 9[18], 15615-15622 (2017).
DOI: 10.1021/acsami.7b00979
17-2
"Intermixed Donor/Acceptor Region in Conjugated Polymer Blends Visualized by Conductive Atomic Force Microscopy",
Miki Osaka, Hiroaki Benten, Hideo Ohkita, Shinzaburo Ito
Macromolecules, 50[4], 1618-1625 (2017).
DOI: 10.1021/acs.macromol.6b02604
17-1
"Open-Circuit Voltage Loss in CH3NH3SnI3 Perovskite Solar Cells'',
Hyung Do Kim, Yoshihiro Miyamoto, Hirofumi Kubota, Toshihiko Yamanari, Hideo Ohkita
Chem. Lett., 46[2], 253-256 (2017).
DOI: 10.1246/cl.160994 (Open Access)
Editor's Choice
Focus Collection: Perovskite Solar Cells
2016
16-13
"半導体ポリマー「PNOz4T」による有機薄膜太陽電池の光エネルギー損失低減と変換効率向上",
尾坂格, 川島和彰, 玉井康成, 大北英生, 瀧宮和男
月刊マテリアルステージ, 16[6], 45-47 (2016).
16-12
"Implication of Fluorine Atom on Electronic Properties, Ordering Structures, and Photovoltaic Performance in Naphthobisthiadiazole-Based Semiconducting Polymers'',
Kazuaki Kawashima, Tomohiro Fukuhara, Yosuke Suda, Yasuhito Suzuki, Tomoyuki Koganezawa, Hiroyuki Yoshida, Hideo Ohkita, Itaru Osaka, Kazuo Takimiya
J. Am. Chem. Soc., 138[32], 10265-10275 (2016).
DOI: 10.1021/jacs.6b05418
Spotlights on Recent JACS Publications
16-11
"結晶粒径を制御したペロブスカイト太陽電池の研究開発",
大北英生, キムヒョンド, 辨天宏明, 伊藤紳三郎
会報光触媒, 49, 74–77 (2016).
16-10
"Reduced Bimolecular Recombination in Polymer Solar Cells",
Tomohiro Fukuhara, Miki Osaka, Yasunari Tamai, Hideo Ohkita, Hiroaki Benten, Shinzaburo Ito
J. Photopolym. Sci. Technol., 29[4], 575-580 (2016).
DOI: 10.2494/photopolymer.29.575 (Open Access)
16-9
"Ternary Blend of Conjugated Polymers for Broadening the Absorption Bandwidth of Polymer Solar Cells",
Hiroaki Benten, Takaya Nishida, Daisuke Mori, Hideo Ohkita, Shinzaburo Ito
J. Photopolym. Sci. Technol., 29[4], 537-540 (2016).
DOI: 10.2494/photopolymer.29.537 (Open Access)
16-8
"Light-Induced Degradation Mechanism in Poly(3-hexylthiophene)/Fullerene Blend Solar Cells'',
Yasunari Tamai, Hideo Ohkita, Miki Namatame, Kazuhiro Marumoto, Satoru Shimomura, Toshihiro Yamanari, Shinzaburo Ito
Adv. Energy Mater., 6[11], 1600171_1-7 (2016).
DOI: 10.1002/aenm.201600171
16-7
"Recent Research Progress of Polymer Donor/Polymer Acceptor Blend Solar Cells'',
Hiroaki Benten, Daisuke Mori, Hideo Ohkita, Shinzaburo Ito
J. Mater. Chem. A, 4[15], 5340-5365 (2016).
DOI: 10.1039/C5TA10759H (Open Access)
16-6
"電流計測原子間力顕微鏡でみる共役高分子薄膜のナノ電子構造'',
辨天宏明, 尾坂美樹, 大北英生, 伊藤紳三郎
日本化学繊維研究所講演集, 73, 92-99 (2016).
[Link]
16-5
"高分子太陽電池の限界を引き上げる新分子－せっけんの構造をヒントに合成した高性能色素'',
大北英生、伊藤紳三郎
化学, 71[3], 50-54 (2016).
[Link]
16-4
"高分子太陽電池の新発電原理の分子論的探求'',
大北英生
太陽光と光電変換機能―異分野融合から生まれる次世代太陽電池―,早瀬修二 監修, 第2章, pp.87-97,
シーエムシー出版 (2016).
[Link]
16-3
"Photovoltaic Performance of Perovskite Solar Cells with Different Grain Sizes'',
Hyung Do Kim, Hideo Ohkita, Hiroaki Benten, Shinzaburo Ito
Adv. Mater., 28[5], 917-922 (2016).
DOI: 10.1002/adma.201504144
16-2
"High-Performance Ternary Blend All-Polymer Solar Cells with Complementary Absorption Bands from Visible to Near-Infrared Wavelengths'',
Hiroaki Benten, Takaya Nishida, Daisuke Mori, Huajun Xu, Hideo Ohkita, Shinzaburo Ito
Energy Environ. Sci., 9[1], 135-140 (2016).
DOI: 10.1039/C5EE03460D (Open Access)
16-1
"Transient Absorption Spectroscopy for Polymer Solar Cells'',
Hideo Ohkita, Yasunari Tamai, Hiroaki Benten, Shinzaburo Ito
IEEE J. Sel. Top. Quantum Electron., 22[1], 100-111 (2016).
DOI: 10.1109/JSTQE.2015.2457615