The author was graduated from Osaka University in 1978 and received Ph.D from Osaka University in 1983. He joined R&D Center in Toshiba from 1978 to 2000, during which the author was engaged in development of ULSI lithography, solar cells direct methanol fuel cells, and polysilane. He joined polysilane research in Robert West group of Wisconsin University (US) from 1988 to 1990. He was a professor of Kyushu Institute of Technology (National Institute) since 2001. From 2019, the author is a professor in The University of Electro-Communications in Japan. His research interest is printable solar cells.

Maksym Kovalenko has been a tenure-track Assistant Professor of Inorganic Chemistry at ETH Zurich since July 2011 and Associate professor from January 2017. His group is also partially hosted by EMPA (Swiss Federal Laboratories for Materials Science and Technology) to support his highly interdisciplinary research program. He completed graduate studies at Johannes Kepler University Linz (Austria, 2004-2007, with Prof. Wolfgang Heiss), followed by postdoctoral training at the University of Chicago (USA, 2008-2011, with Prof. Dmitri Talapin). His present scientific focus is on the development of new synthesis methods for inorganic nanomaterials, their surface chemistry engineering, and assembly into macroscopically large solids. His ultimate, practical goal is to provide novel inorganic materials for optoelectronics, rechargeable Li-ion batteries, post-Li-battery materials, and catalysis. He is the recipient of an ERC Consolidator Grant 2018, ERC Starting Grant 2012, Ruzicka Preis 2013 and Werner Prize 2016. He is also a Highly Cited Researcher 2018 (by Clarivate Analytics).

Hendrik (Henk) Bolink obtained his PhD in Materials Science at the University of Groningen in 1997 under the supervision of Prof. Hadziioannou. After that he worked at DSM as a materials scientist and project manager in the central research and new business development department, respectively. In 2001 he joined Philips, to lead the materials development activity of Philips´s PolyLED project.

Since 2003 he is at the Instituto de Ciencia Molecular (ICMol )of the University of Valencia where he initiated a research line on molecular opto-eletronic devices. His current research interests encompass: inorganic/organic hybrid materials such as transition metal complexes and perovskites and their integration in LEDs and solar cells.

Kenjiro Fukuda received his Ph.D. from the Department of Applied Physics at the University of Tokyo in 2011. From 2011 to 2015, he worked at Yamagata University as an assistant professor, and then joined RIKEN, where he is currently a Senior research scientist in the thin-film device laboratory and emergent soft system research team, Center for Emergent Matter Science. From 2014 to 2018, he has also been a PRESTO researcher of the Japan Science and Technology Agency. His current research interests include organic transistors, flexible electronics, and printed electronics.

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).

Prof. Qing Shen received her Bachelor’s degree in physics from Nanjing University of China in 1987 and earned her Ph.D. degree from the University of Tokyo in 1995. In 1996, she joined the University of Electro-Communications, Japan and became a full professor in 2016. In 1997, she got the Young Scientist Award of the Japan Society of Applied Physics. In 2003, she got the Best Paper Award of the Japan Society of Thermophysical Properties and the Young Scientist Award of the Symposium on Ultrasonic Electronics of Japan. In 2014, she got the Excellent Women Scientist Award of the Japan Society of Applied Physics. She has published nearly 140 peer-reviewed journal papers and book chapters. Her current research interests focus on solution processed nano-materials and nanostructures, semiconductor quantum dot solar cells and perovskite solar cells, and especially the photoexcited carrier dynamics (hot carrier cooling, multiple exciton generation, charge transfer at the interface) in perovskite solar cells, quantum dot and dye sensitized solar cells, organic-inorganic hybrid solar cells.

Xiaozhang Zhu graduated from the Department of Chemistry, Jilin University with a bachelor's degree in 2001, and from the Institute of Chemistry, Chinese Academy of Sciences with a doctor's degree in 2006. From 2006 to 2012, he worked as a postdoctoral researcher in University of Ulm in Germany with Prof. Peter Baeuerle and University of Tokyo in Japan with Prof. Eiichi Nakamura. In 2012, he joined the Key Laboratory of Organic Solids School of Chemistry as an independent investigator. Since 2015, he has also served as a professor at the University of Chinese Academy of Sciences. He is currently the associate editor of Organic Materials, Thieme Publishing House in Germany, the young editorial board member of Chemical Journal of Chinese Universities, and the member of the Young Chemical Researchers Committee of Chinese Chemical Society. His main research interest is organic/polymer optoelectronic materials and devices. Since 2012, As the corresponding author, he has published more than 120 papers in academic journals including Nat. Energy, Nat. Commun., Sci. Adv., Joule, Chem, J. Am. Chem. Soc., Angew. Chem. Int. Ed., Adv. Mater., Energy Environ. Sci., Chem. Soc. Rev., Acc. Chem. Res., of which 12 have been selected as ESI highly cited papers. He was awarded with the fellowships from the Alexander von Humboldt Foundation and the Japan Society for the Promotion of Science. He is a recipient of the National Science Found for Distinguished Young Scholars.

Akinori Saeki received BS and MS degrees in nuclear engineering from Osaka University in 1999 and 2001, respectively. He received Dr of engineering in applied chemistry from Osaka University in 2007. He had been an assistant professor at The Institute of Scientific and Industrial Research (ISIR), Osaka University in 2003-2009, an assistant professor (tenure-track) in 2010-2014, and an associate professor in 2014-2019 at the Graduate School of Engineering, Osaka University. He had joined in JST-PRESTO research programs of "Photoenergy conversion systems and materials for the next generation solar cells" in 2009-2013 and "Materials Informatics" in 2015-2019. He is currently a professor at Graduate School of Engineering, Osaka University (2019-present). His research interest is in nanometer-scale dynamics of chemical intermediates in condensed matters such as organic semiconductors, organic liquids, and organic-inorganic hybrid materials.

Prof. Satoshi Uchida is a professor (born in 1965) in Research Center for Advanced Science and Technology (RCAST), The University of Tokyo.  He received his PhD from Tohoku University in 1995 and moved to current position in 2006.  For more than 15 years his research focused on the field of dye-sensitized solar cells (DSSCs), specifically cell assembling technique such as full-plastic, light-weight, film type as a ubiquitous power source.  He is now also showing strong activity of Perovskite Solar Cells research based on the crystallography, surface engineering and electronic simulation.