兹邀请香港科技大学范智勇教授来光科系进行学术交流，将于本周五上午10点在电光源楼301会议室做学术报告，主要关于纳米结构材料在高性能集成电子、传感器、及能量收集等上的应用，欢迎各位老师与研究生参加。
 时间：12月26日（本周五）上午10点
 地点：电光源楼301会议室

 报告人：范智勇教授  香港科技大学

 题目：Nanostructured Materials for High Performance Integrated Electronics, Sensors and Energy Harvesting

 摘要：

    Materials made of nano/micro-structures have unique physical properties, such as fast carrier transport, high surface-to-volume ratio, mechanical flexibility, sub-wavelength optical waveguiding, etc. These intriguing properties can be harnessed for a variety of applications in electronics and photonics. In the past, we have fabricated an assortment of semiconductor nanowires, including Si, Ge, CdSe, InAs, ZnO, etc. We have performed systematic investigations on electronic and optoelectronic properties of these materials by configuring them as transistors, photodiodes and sensors. More importantly, we have developed scalable processes to integrate semiconductor nanowires into ordered arrays for large scale electronic applications. Utilizing these approaches, we have fabricated all-nanowire based high frequency devices and integrated circuits with functionality. In the meantime, we have developed several self-organized approaches to fabricate three-dimensional (3-D) nanostructures. These 3-D structures have demonstrated geometry dependent photon management property thus have promising potential for photonic applications. In particular, we have fabricated 3-D nanopillar arrays, nanospike arrays and nanowell arrays. Optical absorption properties of these nano-engineered structures have been investigated with experimental methods as well as theoretical simulations. To explore their photonic applications, nanopillar and nanospike arrays have been fabricated into photovoltaic devices; preliminary results have shown that they can demonstrate improved performance as compared to planar control samples, indicating their potency for cost-effective solar cells.


 范智勇教授简介：

 Dr. Zhiyong Fan received his B. S. and M. S. degrees in Materials Science from Fudan University, Shanghai, China, in 1998 and 2001. He received Ph.D. degree from University of California, Irvine in 2006 in Materials Science as well. From 2007 to 2010, he worked at University of California, Berkeley as a postdoctoral fellow in department of Electrical Engineering and Computer Sciences, with a joint appointment with Lawrence Berkeley National Laboratory. In May 2010, he joined The Hong Kong University of Science and Technology (HKUST) as an assistant professor in department of Electronic and Computer Engineering. Currently he is serving as a steering committee member of HKUST William Mong Institute of Nano Science and Technology, and a scientific committee member of HKUST Energy Institute. He also serves as an editorial borad member of Nature Publish Group Scientific Reports and Assistant Editor of Springer Nanoscale Research Letters. Dr. Fan’s research interest focuses on fabrication and characterization of nanomaterials and nanostructures, their applications for electronics and energy harvesting. He has published over 90 referred papers on Nature Materials, Nature Communications, PNAS, Nano Letters, Advanced Materials, etc., with more than 5,000 citations.