Please post, forward to your groups, and note time and location: 3 PM/ RM 34-401B CENTER FOR EXCITONICS Presents: Upscaling Perovskite Solar Cells via Industrial Roll-to-Roll Processes April 7, 2016 at 3:00PM/34-401B Doojin Vak Commonwealth Scientific and Industrial Research Organisation, Australia [Doojin_Vak-2] Perovskite solar cells have emerged as the most promising third-generation solar cells with a rapid increase in record efficiencies. However, most of these devices have been made by processes that are not scalable, typically spin coating. The next challenge in this field will be translating lab-scale developments to large-scale production processes, which will preferably include a cost-competitive roll-to-roll printing process. Commonwealth Scientific and Industrial Research Organization (CSIRO), a national science agency of Australia, has built a printing facility for large-scale printed solar cells up to 30 cm wide via a roll-to-roll process. In addition to the manufacturing facility, a 3D printer-based slot-die coater was developed as a lab-to-fab translation tool and used to fabricate printed perovskite solar cells with over 15% power conversion efficiency. The 3D printing platform provides automated control of x,y,z-positioning, coating speed, acceleration and temperature. This degree of control allows us to mimic and develop the printing conditions appropriate for a typical roll-to-roll manufacturing process. The processes developed in a batch process have now been transferred to a roll-to-roll coater. Recent progress on the translation process for perovskite solar cells will be presented. Dr Doojin Vak was born in South Korea and he received PhD from Department of Materials Science and Engineering in GIST under the supervision of Prof. Dong-Yu Kim. After completing a PhD in materials chemistry for organic optoelectronic applications, he spent 2 years on fabrication of organic photovoltaics and organic light-emitting diodes in the Heeger Center for Advanced Materials at GIST. He joined Prof. Andrew Holmes group in The University of Melbourne in 2007 as a post-doctoral researcher and started working on the development of large-scale printed solar cells as a key researcher in the Victorian Organic Solar Consortium (VICOSC). After joining CSIRO as a research scientist in 2010, he continued the activity on printed solar cells. Since 2014, he has been working on perovskite based printed solar cells and demonstrated the world-first slot-die coated perovskite solar cell. This talk is part of the Perovskites Seminar Series organized by Sam Stranks and sponsored by the Center for Excitonics. For more info contact Sam: stranks@mit.edu<mailto:stranks@mit.edu> The Center For Excitonics Is An Energy Frontier Research Center Funded By The U.S. Department Of Energy, Office Of Science And Office Of Basic Energy Sciences Light refreshments will be served.