"Seiichiro Izawa","Blue Organic Light-Emitting Diode with a Turn-on Voltage at 1.47 V","Materials for Sustainable Development Conference",,,,,,2024,Mar.
"Seiichiro Izawa","超低電圧で駆動する有機ELの開発",,"有機半導体の開発と最新動向","シーエムシー出版","Vol. 34",," 353-361",2024,Mar.
"Seiichiro Izawa","超低電圧で光る青色有機の開発","有機エレクトロニクス材料研究会 次世代光電子デバイスを指向した発光材料開発の最前線",,,,,,2024,Feb.
"Seiichiro Izawa","動的エキシトンを使った低電圧で光る青色有機EL","近畿化学協会 機能性色素部会 第111回例会",,,,,,2024,Jan.
"Seiichiro Izawa","Blue organic light-emitting diode with low driving voltage","Display Workshops 23",,,,,,2023,Dec.
"QINGJUN SHUI,Shiqi Shan,Yong-Chang Zhai,Shinobu Aoyagi,Seiichiro Izawa,Miftakhul Huda,Chu-Yang Yu,Lijian Zuo,Hongzheng Chen,Hao-Sheng Lin,Yutaka Matsuo","Evaporable Fullerene Indanones with Controlled Amorphous Morphology as Electron Transport Layers for Inverted Perovskite Solar Cells",,"Journal of the American Chemical Society",,,,,2023,Dec.
"Seiichiro Izawa","Blue organic light-emitting diode with extremely low driving voltage","The 30th International Display Workshops",,,,,,2023,Dec.
"Seiichiro Izawa","Blue Organic Light-Emitting Diode Operated by Extremely Low Driving Voltage","The 15th Asian Conference on Organic electronics",,,,,,2023,Nov.
"Seiichiro Izawa","有機半導体界面での動的エキシトンを使った光機能","物性科学領域横断研究会",,,,,,2023,Nov.
"Hironori Kobayashi,Seiichiro Izawa,Chitoshi Kitamura,Masahiro Hiramoto,Katsuhiko Ono","Dioxaborin Compounds with Terminal Carbazole Groups: Enhancing Electron Acceptor in Organic Photovoltaics",,"Asian Journal of Organic Chemistry",,,,,2023,Oct.
"Seiichiro Izawa","乾電池１本という超低電圧で発光する青色有機EL素子の開発","五セラミックス研究機関合同講演会",,,,,,2023,Oct.
"Yasuo,Kosei Ito,Riku Takeuchi,Ryohei Tsuruta,Kaname Yamauchi,Seiichiro Izawa,Masahiro Hiramoto,Rosantha Kumara,tomoyuki koganezawa","Well-ordered molecular heterojunction of epitaxial C60 on single-crystal dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT)",,"Applied Physics Express",,,,,2023,Oct.
"Shurong Miao,Ryosuke Nitta,Seiichiro Izawa,Yutaka Majima","Bottom Contact 100?nm Channel‐Length α‐In2Se3 In‐Plane Ferroelectric Memory",,"Advanced Science",,,,,2023,Oct.
"Seiichiro Izawa,Masahiro Morimoto,Keisuke Fujimoto,Koki Banno,Yutaka Majima,Masaki Takahashi,Shigeki Naka,Masahiro Hiramoto","Blue organic light-emitting diode with a turn-on voltage of 1.47?V",,"Nature Communications",,,,,2023,Sept.
"Seiichiro Izawa","界面での電荷移動状態を利用したアップコンバージョン発光","第84回応用物理学会秋季学術講演会",,,,,,2023,Sept.
"Seiichiro Izawa","超低電圧で発光する有機EL素子の開発","映像情報メディア学会 情報ディスプレイ研究会",,,,,,2023,Aug.
"Shurong Miao,Ryosuke Nitta,Seiichiro Izawa,YUTAKA MAJIMA","Bottom contact 100nm channel-length α-In2Se3 in-plane ferroelectric memory",,"Advanced Science",," 10",," 2303032",2023,Aug.
"Zhongzheng Sun,Yoshiko Nakamura,Ryosuke Nitta,Seiichiro Izawa,Hiroshi Funakubo,Yutaka Majima","Nano-cross-point Ferroelectric Tunnel Junctions based on 3nm 7% Yttrium doped HfO2 (YHO7)","KJF-ICOMEP 2023 (KJF International Conference on Organic Materials for Electronics and Photonics 2023)",,,,,,2023,Aug.
"Riku Shikauchi,Zhongzheng Sun,Shinnosuke Yasuoka,Ryosuke Nitta,Seiichiro Izawa,Hiroshi Funakubo,Yutaka Majima","Ferroelectric Tunnel Junctions based on AlScN","KJF-ICOMEP 2023 (KJF International Conference on Organic Materials for Electronics and Photonics 2023)",,,,,,2023,Aug.
"Seiichiro Izawa","分子界面を使った新たな有機光エレクトロニクスの創生","明治大学 応用化学科講演会",,,,,,2023,July
"Seiichiro Izawa","9‐1: Invited Paper: Triplet‐Triplet Annihilation at Organic Semiconductor Interface for Efficient Solid‐State Photon Upconversion and Organic Light‐Emitting Diodes with Low Driving Voltage",,"SID Symposium Digest of Technical Papers",,,,,2023,June
"Seiichiro Izawa","Photo- and electrically-excited upconversion emission at organic semiconductor interface","The ninth International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies",,,,,,2023,June
"Jaseela Palassery Ithikkal,Seiichiro Izawa,Masahiro Hiramoto","Doped Lateral Organic Photovoltaic Cells",,"physica status solidi (a)",,,,,2023,June
"Seiichiro Izawa","Triplet-Triplet Annihilation at Organic Semiconductor Interface for Efficient Solid-State Photon Upconversion and Organic Light-Emitting Diodes with Low Driving Voltage","The Society for Information Display Annual Symposium Display Week",,,,,,2023,May
"Seiichiro Izawa","超低電圧で光る青色有機EL","電子情報通信学会 有機エレクトロニクス研究会",,,,,,2023,May
"Seiichiro Izawa","有機半導体界面での光電変換と発光素子への展開","近畿大学 エネルギー物質コロキウム",,,,,,2023,Apr.
"Masahiro Morimoto,Seiichiro Izawa","励起錯体アップコンバージョン型有機ＥＬ開発と乾電池１本の超低電圧駆動",,"OPTRONICS",," 4",," 210-214",2023,Apr.
"Seiichiro Izawa","真空蒸着で行った有機太陽電池研究と発光素子への展開","第70回応用物理学会春季学術講演会 シンポジウム 有機半導体デバイスの現在・過去・未来：光電変換を中心として",,,,,,2023,Mar.
"Yuki Uehashi,Seiichiro Izawa,Yuya Yamada,Yohei Miwa,Toshiyasu Inuzuka,Yasuhiro Kubota,Masahiro Hiramoto,Kazumasa Funabiki","Synthesis of Highly Photostable Benzoindolenine‐Based Squaraine Dyes by using Aromatic Fluorine Atoms",,"ChemistrySelect",,"Vol. 8","No. 12",,2023,Mar.
"Seiichiro Izawa","乾電池１本で光る青色有機EL","第70回応用物理学会春季学術講演会",,,,,,2023,Mar.
"Seiichiro Izawa","有機半導体界面を利用した光エネルギー変換",,"クリーンテクノロジー","日本工業出版"," 1",," 10-12",2023,Jan.
"Seiichiro Izawa","Photo- and electrically-excited upconversion emission using organic semiconductor interface","13th International Conference on Nano-Molecular Electronics",,,,,,2022,Dec.
"Seiichiro Izawa","Photon upconversion at organic semiconductor interface","13th International Conference on Organic Nonlinear Optics 2022 International Conference on Organic Photonics and Electronics",,,,,,2022,Nov.
"Seiichiro Izawa","有機半導体薄膜の界面を利用した近赤外ー可視の光アップコンバージョン","高分子学会 印刷・情報・電子用材料研究会",,,,,,2022,Nov.
"Y. Sakamoto,S. Izawa,H. Ohkita,M. Hiramoto,Y. Tamai","Triplet sensitization via charge recombination at organic heterojunction for efficient near-infrared to visible solid-state photon upconversion",,"Communications Materials",," 3",," 76",2022,Oct.
"Seiichiro Izawa","有機半導体界面を利用した近赤外光から可視光への光アップコンバージョン","第31回 日本赤外線学会 研究発表会",,,,,,2022,Oct.
"Seiichiro Izawa","近赤外光から可視光への光変換と低電圧で駆動する有機ELの開発","大阪大学 産業科学研究所テクノサロン",,,,,,2022,Oct.
"Seiichiro Izawa","有機半導体界面での電荷移動状態を利用した光アップコンバージョン","第24回分子性固体オンラインセミナー",,,,,,2022,Aug.
"H. Ueno,D. Kitabatake,H. Lin,S. Izawa,M. Hiramoto,F. Misaizu,S. Maruyama,Y. Matsuo","Synthesis of neutral Li-endohedral PCBM: an n-dopant for fullerene derivatives",,"Chemical Communications",," 58",," 10190-10193",2022,Aug.
"Seiichiro Izawa","乾電池１本で高輝度発光する有機ELの開発",,"月刊機能材料","シーエムシー出版"," 8",," 28-35",2022,Aug.
"Seiichiro Izawa","分子の界面を使って光と電気を自在に変換する！","自然科学研究機構 若手研究者賞 受賞記念講演",,,,,,2022,July
"Seiichiro Izawa","有機半導体界面を舞台にした高効率光エネルギー変換","応用物理学会フォトニクス分科会 InterOpto2022セミナー",,,,,,2022,June
"Seiichiro Izawa","世界最小電圧で発光する有機ELの開発",,"クリーンエネルギー","日本工業出版"," 5",," 33",2022,May
"S. Izawa,M. Morimoto,S. Naka,M. Hiramoto","Spatial distribution of triplet excitons formed from charge transfer states at the donor/acceptor interface",,"Journal of Materials Chemistry A",,,,,2022,May
"Seiichiro Izawa","有機半導体界面を利用した光機能・デバイスの創出","東北大学 学際科学フロンティア研究所 Material Science Seminar",,,,,,2022,May
"Seiichiro Izawa","Efficient Interfacial Upconversion Emission in Organic Semiconductor Devices","12th International Symposium on Organic Molecular Electronics",,,,,,2022,May
"Seiichiro Izawa","Efficient Solid-State Photon Upconversion Enabled by Triplet Formation at Organic Semiconductor Interface","241st Meeting of the Electrochemical Society",,,,,,2022,May
"S. Izawa,M. Morimoto,S. Naka,M. Hiramoto","Efficient Interfacial Upconversion Enabling Bright Emission at an Extremely Low Driving Voltage in Organic Light‐Emitting Diodes",,"Advanced Optical Materials",,,,"pp. 2101710",2022,Jan.
"J. Lee,M. Hiramoto,S. Izawa","Simultaneous measurement of photocurrent and recombination emission in organic solar cell",,"Japanese Journal of Applied Physics",,"Vol. 61","No. 1","pp. 011001",2022,Jan.
"Seiichiro Izawa,Masahiro Hiramoto","Efficient solid-state photon upconversion enabled by triplet formation at an organic semiconductor interface",,"Nature Photonics",,"Vol. 15","No. 12","pp. 895-900",2021,Dec.
"K. Takahashi,S. Izawa,M. Hiramoto,Y. Nakayama","Quasi-Homoepitaxial Junction of Organic Semiconductors: A Structurally Seamless but Electronically Abrupt Interface between Rubrene and Bis(trifluoromethyl)dimethylrubrene",,"The Journal of Physical Chemistry Letters",,"Vol. 12","No. 46","pp. 11430-11437",2021,Nov.
"J. P. Ithikkal,Y. Yabara,S. Izawa,S. Uto,M. Hiramoto","Lateral-tandem organic photovoltaic cells with carrier transport and generation layers",,"Applied Physics Express",,"Vol. 14","No. 10","pp. 101003",2021,Oct.
"J. P. Ithikkal,A. Girault,M. Kikuchi,Y. Yabara,S. Izawa,M. Hiramoto","Photovoltaic behavior of centimeter-long lateral organic junctions",,"Applied Physics Express",,"Vol. 14","No. 9","pp. 094001",2021,Sept.
"Seiichiro Izawa,K. Uchida,M. Nakamura,K. Fujimoto,J. Roudin,J. Lee,T. Inuzuka,T. Nakamura,M. Sakamoto,Y. Nakayama,M. Hiramoto","Influence of N ‐Substituents on Photovoltaic Properties of Singly Bay‐Linked Dimeric Perylene Diimides",,"Chemistry ? A European Journal",,,,,2021,Sept.
"Fujimoto, K.,Izawa, S.,Takahashi, A.,Inuzuka, T.,Sanada, K.,Sakamoto, M.,Nakayama, Y.,Hiramoto, M.,Takahashi, M.,Seiichiro Izawa","Curved Perylene Diimides Fused with Seven-Membered Rings",,"Chemistry - An Asian Journal",,"Vol. 16","No. 6","pp. 690-695",2021,
"Takeuchi, R.,Izawa, S.,Hasegawa, Y.,Tsuruta, R.,Yamaguchi, T.,Meissner, M.,Ideta, S.-I.,Tanaka, K.,Kera, S.,Hiramoto, M.,Nakayama, Y.,Seiichiro Izawa","Experimental Observation of Anisotropic Valence Band Dispersion in Dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT) Single Crystals",,"Journal of Physical Chemistry C",,,,,2021,
"Keisuke Fujimoto,Masaki Takahashi,Seiichiro Izawa,Masahiro Hiramoto","Development of Perylene-Based Non-Fullerene Acceptors through Bay-Functionalization Strategy",,"Materials",,,,,2020,May
"Yasuo,Masaki Iwashita,Mitsuru Kikuchi,Ryohei Tsuruta,Koki Yoshida,Yuki Gunjo,Yusuke Yabara,Takuya Hosokai,tomoyuki koganezawa,Seiichiro Izawa,Masahiro Hiramoto","Electronic and Crystallographic Examinations of the Homoepitaxially Grown Rubrene Single Crystals",,"Materials",,,,,2020,Apr.
"Yabara, Y.,Izawa, S.,Hiramoto, M.,Seiichiro Izawa","Donor/acceptor photovoltaic cells fabricated on p-doped organic single-crystal substrates",,"Materials",,"Vol. 13","No. 9",,2020,
"Lee, J.-H.,Perrot, A.,Hiramoto, M.,Izawa, S.,Seiichiro Izawa","Photoconversion mechanism at the pn-homojunction interface in single organic semiconductor",,"Materials",,"Vol. 13","No. 7",,2020,
"Fujimoto, K.,Izawa, S.,Arikai, Y.,Sugimoto, S.,Oue, H.,Inuzuka, T.,Uemura, N.,Sakamoto, M.,Hiramoto, M.,Takahashi, M.,Seiichiro Izawa","Regioselective Bay-Functionalization of Perylenes Toward Tailor-Made Synthesis of Acceptor Materials for Organic Photovoltaics",,"ChemPlusChem",,"Vol. 85","No. 2","pp. 285-293",2020,
"Nakayama, Y.,Iwashita, M.,Kikuchi, M.,Tsuruta, R.,Yoshida, K.,Gunjo, Y.,Yabara, Y.,Hosokai, T.,Koganezawa, T.,Izawa, S.,Hiramoto, M.,Seiichiro Izawa","Electronic and crystallographic examinations of the homoepitaxially grown rubrene single crystals",,"Materials",,"Vol. 13","No. 8",,2020,
"Kikuchi, M.,Izawa, S.,Rai, N.,Hiramoto, M.,Seiichiro Izawa","Very low activation energy for carrier generation of surface doped organic single crystals observed by Hall effects",,"Applied Physics Letters",,"Vol. 115","No. 11",,2019,
"Ueno, H.,Jeon, I.,Lin, H.-S.,Thote, A.,Nakagawa, T.,Okada, H.,Izawa, S.,Hiramoto, M.,Daiguji, H.,Maruyama, S.,Matsuo, Y.,Seiichiro Izawa","Li@C60 endohedral fullerene as a supraatomic dopant for C60 electron-transporting layers promoting the efficiency of perovskite solar cells",,"Chemical Communications",,"Vol. 55","No. 79","pp. 11837-11839",2019,
"Hiramoto, M.,Kikuchi, M.,Izawa, S.,Seiichiro Izawa","Parts-per-Million-Level Doping Effects in Organic Semiconductor Films and Organic Single Crystals",,"Advanced Materials",,"Vol. 31","No. 1",,2019,
"Kikuchi, M.,Makmuang, S.,Izawa, S.,Wongravee, K.,Hiramoto, M.,Seiichiro Izawa","Doped organic single-crystal photovoltaic cells",,"Organic Electronics",,"Vol. 64",,"pp. 92-96",2019,
"Kikuchi, M.,Hirota, M.,Kunawong, T.,Shinmura, Y.,Abe, M.,Sadamitsu, Y.,Moh, A.M.,Izawa, S.,Izaki, M.,Naito, H.,Hiramoto, M.,Seiichiro Izawa","Lateral Alternating Donor/Acceptor Multilayered Junction for Organic Solar Cells",,"ACS Applied Energy Materials",,"Vol. 2","No. 3","pp. 2087-2093",2019,
"Izawa, S.,Perrot, A.,Lee, J.-H.,Hiramoto, M.,Seiichiro Izawa","Organic pn homojunction solar cell",,"Organic Electronics",,"Vol. 71",,"pp. 45-49",2019,
"Izawa, S.,Shintaku, N.,Kikuchi, M.,Hiramoto, M.,Seiichiro Izawa","Importance of interfacial crystallinity to reduce open-circuit voltage loss in organic solar cells",,"Applied Physics Letters",,"Vol. 115","No. 15",,2019,
"Izawa, S.,Shintaku, N.,Hiramoto, M.,Seiichiro Izawa","Effect of Band Bending and Energy Level Alignment at the Donor/Acceptor Interface on Open-Circuit Voltage in Organic Solar Cells",,"Journal of Physical Chemistry Letters",,"Vol. 9","No. 11","pp. 2914-2918",2018,
"Izawa, S.,Nakano, K.,Suzuki, K.,Chen, Y.,Kikitsu, T.,Hashizume, D.,Koganezawa, T.,Nguyen, T.-Q.,Tajima, K.,Seiichiro Izawa","Crystallization and Polymorphism of Organic Semiconductor in Thin Film Induced by Surface Segregated Monolayers",,"Scientific Reports",,"Vol. 8","No. 1",,2018,
"Shintaku, N.,Hiramoto, M.,Izawa, S.,Seiichiro Izawa","Effect of trap-assisted recombination on open-circuit voltage loss in phthalocyanine/fullerene solar cells",,"Organic Electronics",,"Vol. 55",,"pp. 69-74",2018,
"Shintaku, N.,Hiramoto, M.,Izawa, S.,Seiichiro Izawa","Doping for Controlling Open-Circuit Voltage in Organic Solar Cells",,"Journal of Physical Chemistry C",,"Vol. 122","No. 10","pp. 5248-5253",2018,
"Ohashi, C.,Izawa, S.,Shinmura, Y.,Kikuchi, M.,Watase, S.,Izaki, M.,Naito, H.,Hiramoto, M.,Seiichiro Izawa","Hall Effect in Bulk-Doped Organic Single Crystals",,"Advanced Materials",,"Vol. 29","No. 23",,2017,
"Suzuki, K.,Izawa, S.,Chen, Y.,Nakano, K.,Tajima, K.,Seiichiro Izawa","Drawing organic photovoltaics using paint marker pens",,"AIP Advances",,"Vol. 7","No. 11",,2017,
"Shintaku, N.,Izawa, S.,Takagi, K.,Naito, H.,Hiramoto, M.,Seiichiro Izawa","Hole- and electron-only transport in ratio-controlled organic co-deposited films observed by impedance spectroscopy",,"Organic Electronics",,"Vol. 50",,"pp. 515-520",2017,
"Zhong, Y.,Suzuki, K.,Inoue, D.,Hashizume, D.,Izawa, S.,Hashimoto, K.,Koganezawa, T.,Tajima, K.,Seiichiro Izawa","Interface-induced crystallization and nanostructure formation of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) in polymer blend films and its application in photovoltaics",,"Journal of Materials Chemistry A",,"Vol. 4","No. 9","pp. 3335-3341",2016,
"Zhong, Y.,Izawa, S.,Hashimoto, K.,Tajima, K.,Koganezawa, T.,Yoshida, H.,Seiichiro Izawa","Crystallization-induced energy level change of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) film: Impact of electronic polarization energy",,"Journal of Physical Chemistry C",,"Vol. 119","No. 1","pp. 23-28",2015,
"Izawa, S.,Nakano, K.,Suzuki, K.,Hashimoto, K.,Tajima, K.,Seiichiro Izawa","Dominant effects of first monolayer energetics at donor/acceptor interfaces on organic photovoltaics",,"Advanced Materials",,"Vol. 27","No. 19","pp. 3025-3031",2015,
"Geng, Y.,Xiao, B.,Izawa, S.,Huang, J.,Tajima, K.,Zeng, Q.,Zhou, E.,Seiichiro Izawa","Fullerene-free organic photovoltaics based on unconventional material combination: a molecular donor and polymeric acceptors",,"Journal of Materials Chemistry A",,"Vol. 3","No. 44","pp. 22325-22331",2015,
"Izawa, S.,Nishizawa, T.,Hashimoto, K.,Koganezawa, T.,Tajima, K.,Seiichiro Izawa","Separated crystallization of donor and acceptor in oligo(p-phenylenevinylene)-naphthalenediimide dyad films",,"Synthetic Metals",,"Vol. 197",,"pp. 175-181",2014,
"Nishio, K.,Pornpitra, T.,Izawa, S.,Nishiwaki-Ohkawa, T.,Kato, S.,Hashimoto, K.,Nakanishi, S.,Seiichiro Izawa","Electrochemical detection of circadian redox rhythm in cyanobacterial cells via extracellular electron transfer",,"Plant and Cell Physiology",,"Vol. 56","No. 6","pp. 1053-1058",2014,
"Zhou, E.,Nakano, M.,Izawa, S.,Cong, J.,Osaka, I.,Takimiya, K.,Tajima, K.,Seiichiro Izawa","All-polymer solar cell with high near-infrared response based on a naphthodithiophene diimide (NDTI) copolymer",,"ACS Macro Letters",,"Vol. 3","No. 9","pp. 872-875",2014,
"Zhong, Y.,Tada, A.,Izawa, S.,Hashimoto, K.,Tajima, K.,Seiichiro Izawa","Enhancement of VOC without loss of JSC in organic solar cells by modification of donor/acceptor interfaces",,"Advanced Energy Materials",,"Vol. 4","No. 5",,2014,
"Izawa, S.,Hashimoto, K.,Tajima, K.,Seiichiro Izawa","Surface functionalization of organic semiconductor films by segregated monolayers",,"Physical Chemistry Chemical Physics",,"Vol. 16","No. 31","pp. 16383-16387",2014,
"Izawa, S.,Hashimoto, K.,Tajima, K.,Seiichiro Izawa","Morphological stability of organic solar cells based upon an oligo(p-phenylenevinylene)-C 70 dyad",,"Physical Chemistry Chemical Physics",,"Vol. 14","No. 46","pp. 16138-16142",2012,
"Izawa, S.,Hashimoto, K.,Tajima, K.,Seiichiro Izawa","Synthesis, characterization, and photovoltaic properties of diketopyrrolopyrrole-oligothiophene/fullerene dyads",,"Synthetic Metals",,"Vol. 162","No. 24","pp. 2201-2205",2012,
"Izawa, S.,Hashimoto, K.,Tajima, K.,Seiichiro Izawa","Efficient charge generation and collection in organic solar cells based on low band gap dyad molecules",,"Chemical Communications",,"Vol. 47","No. 22","pp. 6365-6367",2011,