27Materials Chemistry Enabling the Practical Application of Perovskite Solar CellsAtsushi WakamiyaProf. Atsushi Wakamiya is a Professor at Institute for Chemical Research, Kyoto University. He received his Ph.D. from Kyoto University in 2003. He is a project leader of the Green Innovation Program (NEDO) and JST-Mirai Project. He published over 200 peer-reviewed scientific papers and 60 patent applications. He received many awards: The Innovative PV Award (2016), The 19th Green and Sustainable Chemistry Award (GSC Award) by MEXT Japan (2020), 53rd Ichimura Prize in Science against Global Warming for Distinguished Achievement (2021), The Chemical Society of Japan Award for Creative Work (2020), Commendation for Science and Technology by MEXT Japan: Award for Science and Technology Research Category (2022), and Hamakawa Award (2024), etc.Perovskite solar cells are attracting attention as next-generation solar cells that can be fabricated by solution coating of materials. Since the pioneering works of Prof. T. Miyasaka,[1] Prof. H. J. Snaith,[2] and Prof. N.-G. Park,[3] significant improvements in power conversion efficiency (PCE) have been achieved through advances in related materials chemistry. These include improvements in the coating and film formation methods for metal halide perovskite semiconductors, the development of surface passivation methods, and the development of new materials enabling efficient charge extraction from the perovskite layer. We have been engaged in development research in this field from an early stage, focusing on these material chemistry perspectives, and have contributed to enhancing the performance of perovskite solar cells. In 2018, based on our accumulated research results, we established the Kyoto University-spinoff startup EneCoat Technologies Co. Ltd. (Co-founder & Chief Advisor), and are working on research for the practical application of these solar cells. In this presentation, I will introduce our materials chemistry and recent research progress.[4]-[14]Co-Founder & Chief Advisor (Science & Technology), EneCoat Technologies, Co. Ltd.AbstractReferences[1] A. Kojima, T. Miyasaka, et al. J. Am. Chem. Soc. 2009, 131, 6050.[2] M. M. Lee, H. J. Snaith, et al. Science 2012, 338, 643.[3] H.-S. Kim, N.-G. Park, et al., Sci. Rep. 2012, 2, 591.[4] A. Wakamiya, et al. Chem. Lett. 2014, 43,711. [5] T. Nakamura, A. Wakamiya, et al. Bull. Chem. Soc. Jpn. (Award Accounts), 2024, 97, uoad025.[6] Y. Yamada, A. Wakamiya, K. Kanemitsu, et al. J. Am. Chem. Soc. 2014, 136, 11610.[7] Y. Yamada, A. Wakamiya, K. Kanemitsu, et al. J. Am. Chem. Soc. 2015, 137, 10456.[8] M. A. Truong, A. Wakamiya, et al, J. Am. Chem. Soc. 2023, 145, 7528.[9] M. A. Truong, A. Wakamiya, et al, Angew. Chem. Int. Ed. 2024, 63, e202412939.[10] M. A. Truong, A. Wakamiya, et al, J. Am. Chem. Soc. 2025, 147, 2797.[11] S. Hu, A. Wakamiya, et al. Energy Environ. Sci. 2022, 15, 2096.[12] S. Hu, H. J. Snaith, A. Wakamiya, et al. Adv. Mater. 2023, 35, 2208320.[13] S. Hu, J. Wang, A. Wakamiya, H. J. Snaith, et al. Nature 2025, 639, 93.[14] A. Wakamiya, N.-G. Park, Nat. Synth. 2025, DOI: 10.1038/s44160-025-00873-w.Invited Talk 3Professor, Institute for Chemical Research, Kyoto University
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