28Takurou N. MurakamiLeader of Perovskite Solar Cells Research TeamScience and Technology (AIST)Toward Commercialization: Research and Development ofPerovskite Solar CellsDr. Takurou N. Murakami is currently leads a national R&D initiative for the commercialization of perovskite solar cells (PSCs) under the Green Innovation Fund, supporting industrial partners in technology development. Dr. Murakami received his Ph.D. in engineering from Toin University of Yokohama in 2005 and subsequently conducted postdoctoral research in the laboratory of Prof. Michael Graetzel at EPFL. He served as a lecturer at Toin University of Yokohama from 2007 to 2011.In 2005, he was awarded the Scientific American 50 Award for inventing the photocapacitor, a device integrating photoelectric conversion and energy storage. In 2006, he received the Honda-Fujishima Award for his pioneering work on plastic dye-sensitized solar cells and photocapacitors. Notably, he co-invented the world’s first solid-state perovskite solar cell with Professor Henry Snaith of Oxford University.Fourteen years ago, Professor Henry Snaith, Dr. Micael Lee of Oxford University, and the author invented solid-state perovskite solar cells (PSCs), initiating a global surge in PSC research. Since then, PSCs have undergone significant advancements in conversion efficiency and stability, positioning them as the leading candidates among organic-based photovoltaic technologies. Companies worldwide are now actively pursuing their practical application. AIST has been engaged in continuous R&D since the early stages of PSC development. Until FY 2020, efforts focused on film formation and passivation technologies to enhance charge transport. Since 2021, Japan’s Green Innovation Fund has supported carbon-neutral technology development, with the goal of commercializing PSCs by 2030. AIST contributes by advancing lightweight PSCs through scientific approaches that complement industrial capabilities.Despite progress, improving outdoor durability under thermal, moisture, and light stress remains essential for commercialization. Degradation issues must be addressed through robust materials and interface engineering. AIST is developing high-durability materials, although evaluation is time-consuming due to the need for thickness and band alignment optimization. To accelerate this process, a fully automated PSC fabrication system using spin coating has been developed, enabling efficient screening of new material configurations. This presentation outlines AIST’s ongoing research and development activities toward the practical realization of PSCs.Renewable Energy Advanced Research Center, National Institute of Advanced IndustrialAbstractInvited Talk 4
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