"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.
"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.
"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
"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.
"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.
"Keisuke  Fujimoto,Masaki Takahashi,Seiichiro Izawa,Masahiro Hiramoto","Development of Perylene-Based Non-Fullerene Acceptors through Bay-Functionalization Strategy",,"Materials",,,,,2020,May