报告题目：Perovskite Oxide Semiconductor Heterojuntions for Field Effect Transistor Applications
报告时间：2019年3月18日下午：2：00 - 3：00
Perovskite oxide semiconductors have attracted great interests for electronic, optoelectronic, and magnetic device applications due to their unique material properties. For instance, BaSnO3 has the potential to be used as a channel material in field effect transistors because of its low effective mass, high dielectric constant, and wide bandgap, enabling its applications into high frequency electronic devices. In this talk, I will report with the application of La doping techniques, a high mobility in highly-doped BaSnO3 films can be achieved. Further, a high dielectric constant barrier such as BaTiO3 (>300) can be used as a gate dielectric to pinch off the channel with reasonable biasing conditions creating superior field managements than that of conventional semiconductor devices. The innovative device concept of BaTiO3/BaSnO3 heterostructure devices with extremely high-doped BaSnO3 as channel material for realizing a new class of high-frequency electronic devices will be discussed.
Dr. Wu Lu is currently a professor at Department of Electrical and Computer Engineering, The Ohio State University (OSU). He received his Ph.D in physical electronics and optoelectronics in 1994 from Southeast University. Before he joined OSU as a faculty in 2002, he held a number of research positions at Electronics and Telecommunications Research Institute, South Korea, Nanyang Technological University, Singapore, and University of Illinois at Urbana-Champaign, USA. He was a World Class University (WCU) Professorship at Gwangju Institute of Science and Technology (GIST) supported by National Research Foundation, South Korea, from 2009 to 2014. He is a visiting or guest professor at GIST, Fudan University, Southeast University, respectively. He has published over 130 papers in international journals and delivered numerous plenary and invited talks at international conferences. He has received many awards including Lumley Research Award in 2006 and Lumley Collaborative Research Award in 2013 and 2017.