The author 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 polysilanes. He joined polysilane research in Robert West group of Wisconsin University (US) from 1988 to 1990. He is a professor of Kyushu Institute of Technology (National Institute) from 2001 to 2019. From 2009 to 2017, he was a Supervisor of PRESTO project (Japan Science and Technology Agency (JST), “Photoenergy conversion systems and materials for the next generation solar cells“ project). From 2012 to 2016, he was dean of graduate school of life science and systems engineering, Kyushu Institute of Technology. From 2016 to 2018, he was an Executive Director, Vice-President of Kyushu Institute of Technology. Since 2019, he is a professor of The University of Electro-Communications (National University in Tokyo). He still holds the post of the leader of Solar Energy Conversion research center in Kyushu Institute of Technology. His research interest is printable solar cells and thermoelectric devices.

Topic: Sn-Perovskite solar cells with narrow band gap –Toward tandem and Pb free perovskite solar cells.