中国光学工程学会

Shuzi Hayase
日本电气通信大学
Shuzi Hayase, Professor, The University of Electro-Communications, Japan. Shuzi Hayase graduated from Osaka University in 1978 and received Ph.D from Osaka University in 1983. He joined R&D Center in Toshiba Corporation from 1978 to 2000, during which he 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 was 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). His research interest is printable solar cells and thermoelectric devices. He received Kamura Memorial Award (2017), Award for Technological Development by The Japan Electrical Manufacturers Association (1996), The Chemical Society of Japan Award for Technological Development: Awarded for distinguished contributions in technological development in chemical industry (1992), National Commendation for Invention by Japan Institute of Invention and Innovation (1987). The number of publications is 345 and the number of the review articles is 70 including papers in Japanese.
报告题目
Sn perovskite solar cells -present and future-
报告摘要

Tin halide perovskite solar cells (Sn-PVK PV) open up new application fields as Pb free perovskite solar cells. Despite of the similarities between tin halide and lead halide perovskites with perfect crystal structure by calculation, the performance of Sn perovskite solar cells was still lower than that of Pb-perovskite solar cells. The presence of crystal defects and mismatching of the energy diagram of the solar cell are items for decreasing the efficiency. Recent Sn-PVK PV researches are reviewed from the view point of how these items were tried to be overcome, including our approaches to achieve 13 % efficiency for Pb free PVK PV.  The other research item for Sn-related PVK PV is SnPb-perovskite solar cells with narrow band gap. Higher efficiency than that of Pb perovskite solar cells and the application to the bottom cells of perovskite-perovskite tandem solar cells are expected. The research trend of SnPb-PVK PV is also reviewed, including our research results with higher than 21% efficiency.