[color_print] Micro-nano Seminar Series Joint Micro-Nano / LMP Seminar ________________________________ Tuesday, November 28, 2017 12:00 pm - 35-225 Professor Shigeo Maruyama Department of Mechanical Engineering The University of Tokyo Energy NanoEngineering Laboratory National Institute of Advanced Industrial Science and Technology,Tsukuba, Japan Carbon Nanotubes and Graphene for Perovskite Solar Cells Abstract Single-walled carbon nanotubes (SWNT), graphene, and fullerene (C60 and PCBM) would be very efficiently used in lead halide Perovskite solar cells. A film of SWNTs or graphene can be flexible and stretchable transparent-conductive layer. At the same time, this film can be carrier-selective layers, i.e., electron-blocking-layers or hole-blocking-layers. Based on our experiences of using nanotube films for CNT-Si solar cells [1] and organic polymer solar cells [2,3], we have explored the application of SWNT films for organic-inorganic perovskite solar cells. We have demonstrated the replacement of ITO in inverted-type perovskite solar cells,SWNTs/PEDOT:PSS/CH3NH3PbI3/PCBM/Al [4]. The flexible application on polyethylene terephthalate (PET) is also demonstrated [4]. With the improved perovskite structure, a film of carbon nanotubes or graphene can be practical replacement of ITO for the flexible transparent electrode of inverted perovskite solar cells [5]. This work was supported by JSPS KAKENHI Grant Numbers JP25107002 and JP15H05760. [ShigeoMaruyama]Biography Professor Shigeo Maruyama received his Ph.D. from the School of Engineering at the University of Tokyo in 1988. Since 2014, he is a Distinguished Professor at the University of Tokyo. From April 2015, he works as a cross-appointment fellow for Advanced Industrial science and technology (AIST) in Japan. From 2016, he is also serving as guest professor at Peking University. Prof. Maruyama has served as a program officer of Japan Society for the Promotion of Science (JSPS) during 2009-2012, and as the president of "The Fullerenes, Nanotubes and Graphene Research Society," since 2011, and the co-chair of steering committee of Carbon Nanotube conferences. He also served as Director of The Japan Society of Applied Physics since 2014 and as Executive Director in 2015. He has published more than 210 ISI-listed papers which have been cited more than 9,000 times, resulting the h-index of 50 (Google Scholar shows 15, 832 citations and h-index 64). Host: Professor Anastasios John Hart: ajhart@mit.edu<mailto:ajhart@mit.edu> Refreshments Provided Thank you, Emilie Heilig Massachusetts Institute of Technology 77 Massachusetts Ave, 3-359 (32 Vassar St, 3-359 for packages) Cambridge, MA 02139 P: 617-253-2883