Seigo Ito received his Ph.D. from the University of Tokyo (Japan), with a thesis that was the first to discuss Graetzel-type dye-sensitized solar cells in Japan. He worked in the Laboratory of Professor Shozo Yanagida (Osaka University, Japan) for two years, and in the Laboratory of Professor Michael Graetzel, at the Swiss federal Institute of Technology (EPFL) in Lausanne as a postdoctoral scientist for over three years, where his efforts focused on the progress of high-efficiency dye-sensitized solar cells. He is currently professor at University of Hyogo, making new printable cost-effective solar cells.

Hiroshi Segawa (born 1961) is a professor at Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Japan. He obtained his Ph.D. in Molecular Engineering from Graduate School of Engineering of Kyoto University in 1989 and was Research Associate (1989-1995) at the division of Molecular Engineering of Graduate School of Engineering at Kyoto University. He held an additional researcher post (1994-1997) of PRESTO project of Japan Science and Technology Agency (JST). In 1995 he joined the University of Tokyo as Associate Professor of Department of Chemistry at Graduate School of Arts and Sciences. From 1997 he has also been in charge of Department of Applied Chemistry at Graduate School of Engineering. In 2006 Professor Segawa joined the three faculties of RCAST, Department of Chemistry at Graduate School of Arts and Sciences, and Department of Applied Chemistry at Graduate School of Engineering at the University of Tokyo. In 2010, he was appointed director of Academic-Industrial Joint Laboratory for Renewable Energy of RCAST. Currently he is one of core researcher of FIRST Program (Funding Program for World-Leading Innovative R&D on Science and Technology) which is selected top 30 researchers with highest potential from various science fields by Cabinet office, Government of Japan. He is one of the experts in the field of electrochemical solar cells. His research group are focused on construction of photo-energy conversion system. Currently the object is the efficiency enhancement of the meso-structured solar cells. Additionally, he is developing an energy-storable dye-sensitized solar cell.

Tsutomu (Tom) Miyasaka received his Doctor of Engineering from The University of Tokyo in 1981. He joined Fuji Photo Film, Co., conducting R&Ds on high sensitivity photographic materials, lithium-ion secondary batteries, and design of an artificial photoreceptor, all of which relate to electrochemistry and photochemistry. In 2001, he moved to Toin University of Yokohama (TUY), Japan, as professor in Graduate School of Engineering to continue photoelectrochemistry. In 2006 to 2009 he was the dean of the Graduate School. In 2004 he has established a TUY-based company, Peccell Technologies, serving as CEO. In 2005 to 2010 he served as a guest professor at The University of Tokyo.

His research has been focused to light to electric energy conversion involving photochemical processes by enhancing rectified charge transfer at photo-functional interfaces of semiconductor electrodes. He has contributed to the design of low-temperature solution-printing process for fabrication of dye-sensitized solar cells and solid-state hybrid photovoltaic (PV) cells. Since the discovery of the organic inorganic hybrid perovskite as PV material in 2006 and fabrication of high efficiency PV device in 2012, his research has moved to R&Ds of the lead halide perovskite PV device. He has promoted the research field of perovskite photovoltaics by organizing international conferences and by publishing many papers on enhancement of PV efficiency and durability, overall citation number of which is reaching more than 5,000 times. In 2009 he was awarded a Ministry of Science & Education prize on his achievements of green sustainable solar cell technology. In 2017 he received Chemical Society of Japan (CSJ) Award. He is presently directing national research projects funded by Japan Science and Technology Agency (JST) and Japan Aerospace Exploration Agency (JAXA).