告题目：Nanofibers and nanowires for flexible solar cells and electronics
报告人：Dr. Peyman Servati
Department of Electrical and Computer Engineering, University of British Columbia
摘要
Low temperature deposition of electronic materials on unconventional flexible substrates such as plastic and paper is promising for low cost, roll-to-roll production of organic solar cells, thin-film transistors, sensors and electronics. Examples of preferred materials include organic semiconductors, nanowires (NWs) and composite nanofibers (CNFs). NWs and CNFs have interesting optoelectronic properties including high surface to volume ratio, and tunable conductance and optical absorption. In my group, Flexible Electronics and Energy Lab (FEEL), we have developed methods for synthesis and deposition of NWs and CNFs for flexible and stable organic and inorganic solar cells, sensors and transparent electrodes. Inspired by the fibrous structure of natural systems such as veins of leaf, we have developed methods for controlled deposition of functional CNFs and NW meshes on flexible substrates with improved optoelectronic properties. Different deposition methods such as electrospinning and stamping are used to transfer these functional meshes to flexible substrates. The NW and CNF meshes can be highly conductive and transparent, and thus can be used as a replacement for costly and brittle indium tin oxide (ITO) for solar cells, displays and sensor devices. In addition, novel skin-like strain sensors based on NW and CNF meshes have been developed, which can be used as a synthetic electronic skin for structural health monitoring.
报告人介绍：
Bio: Dr. Peyman Servati, is an AssociateProfessor with the Department of Electrical and Computer Engineering of the University of British Columbia (UBC), Vancouver, Canada, where he leads Flexible Electronics and Energy Laboratory (FEEL) (http://feel.ece.ubc.ca/) and a is member of Clean Energy Research Centre (CERC).His research interestliesinscalable synthesis and characterization of nanowires and nanostructures, fabrication of flexible and novel electronics and transistors, and development of low-cost photovoltaic devices. Before joining UBC in 2006, he was a research associate at the Centre for Advanced Photonics and Electronics (CAPE) of the University of Cambridge, UK, working on nanowires and printable nanocomposite materials. From 2004 to 2005, he was with Ignis Innovation Inc., a spin-off company of the University of Waterloo, Ontario, Canada, working on thin-film transistor (TFT) backplanes for organic light-emitting diode (OLED) displays.Dr. Servati has eighty papers in peer-reviewed journals and conferences, seven patents, and co-authored three book chapters. His doctoral thesis on mechanically flexible and plastic electronics won the 2005 Doctoral Prize from the Natural Sciences and Engineering Research Council (NSERC) of Canada. He is the winner of 2006 Canada-UK Millennium Research Award and Bronze Medal in the XXV International Physics Olympiad, China, 1994.
地点：物理楼一楼报告厅
时间：12月12日星期一下午3：30PM
