我们邀请到美国佛罗里达州立大学Hanwei Gao教授来访并于7月28日（本周四）上午10:30在科学楼902做报告，他的报告内容是Halide Perovskites-An Emerging Class of Optoelectronic Materials。欢迎您参加！
ABSTRACT
Solution-processed halide perovskites have shown their promises in a variety of optoelectronic applications, from solar cells, light emitting diodes, to photodetectors. This new class of optoelectronic materials exhibit superb optical and electrical properties such as long diffusion length, high carrier mobility, strong optical absorption, and tunable bandgap. Despite the successful demonstrations reported so far, perovskite-based devices with high performance and stability still remain challenging. Our work has been focused on creating halide perovskites for electrically-driven LEDs. We found that the morphology of the materials, either nanostructured or microcrystalline, plays important role in both optical and electrical properties. With optimized morphology, perovskite-based LEDs with high brightness and external quantum efficiencies have been achieved. The approaches to control and manipulate crystallization of halide perovskite may also be applicable to the development of other optoelectronic applications such as solar cells.
BIOGRAPHY
Dr. Hanwei Gao received his Bachelor’s Degree in Physics from University of Science and Technology of China in 2004 and his Doctorate Degree in Materials Science from Northwestern University, USA in 2009. Since 2010, Dr. Gao worked as a Postdoctoral Researcher at University of California-Berkeley where his research focused on plasmonic enhanced solar energy devices, both solid state photovoltaics and photoelectrochemical water splitting. His work has been published in high-impact journals including Nature Nanotechnology, Proceedings of the National Academy of Sciences, Nano Letters, and Advanced Materials among others. Dr. Gao joined the Department of Physics at Florida State University as an Assistant Professor in the Fall of 2013.
