报告时间：2017年6月15日周四9:00
报告地点：科技创新大楼C501室
报告题目：High Efficiency Colloidal Quantum Dot based Light-Emitting Devices

High Efficiency Colloidal Quantum Dot based Light-Emitting Devices
薛剑耿
Department of Materials Science and Engineering
University of Florida
Gainesville, FL 32611, USA

Colloidal semiconductor quantum dots have attracted great attentions in recent decades due to their unique optical properties including high quantum yields, tunable optical properties, and narrow-band emission. The solution processibility of these nanomaterials also enables low-cost, high throughput processes for device manufacturing.  Built upon the success in controlling the size, shape, and composition of quantum dots during colloidal synthesis, researchers have employed quantum dots as the light emitters to achieve efficient electroluminescence, for potential applications in flat-panel displays and solid-state lighting. In this talk, I will present some of my group’s work on improving the manufacturability and performance of quantum dot based light-emitting devices, as well as in terms of understanding the basic operation principles. Maximum external quantum efficiencies in the range of 12-15% have been now achieved for blue/violet, green and red emitting devices with long lifetimes ~100,000 hours or higher for the green and red devices. 

Bio: Jiangeng Xue is Professor of Materials Science and Engineering at the University of Florida in Gainesville, Florida, USA.  He was previously a University of Florida Research Foundation Professor (2013-2016) and Associate Chair of the MSE department (2015-2017) at UF. He received his B.S. and M.S. in physics from University of Science and Technology of China (USTC), and received his M.A. and Ph.D. in Electrical Engineering from Princeton University, working in the field of organic electronics with Prof. Stephen R. Forrest. Before joining the faculty at UF he also worked as a Research Scientist at Global Photonic Energy Corporation for nearly a year.  He was an adjunct professor at Zhejiang University in 2014 while he was on sabbatical leave from UF and was a visiting professor at USTC in 2012. His research interests are broadly on the science and engineering of organic and hybrid organic-inorganic electronic materials including nanostructures and energy materials.  He is a recipient of a NSF CAREER Award and a Solar Energy Innovation Award from Princeton University, and was named as a Scialog Fellow by Research Corporation for Science Advancement (RCSA). His work has been funded by NSF, U.S. Department of Energy, DARPA, DTRA, Florida Energy Systems Consortium, Research Corporation for Science Advancement, as well as the industries.