第92期：Highly-Mismatched Semiconductor Alloys: Theory, Experiments and Applicat
2009-03-18
美国加利福尼亚大学的 Junqiao Wu 教授应我所李京波研究员的邀请，将于2008年12月30日来我所学术交流，并在“黄昆半导体科学技术论坛”上作第92期报告，欢迎广大科研人员及研究生积极参加!
报告题目: Highly-Mismatched Semiconductor Alloys: Theory, Experiments and Applications
报告人: Prof. Junqiao Wu (Department of Materials Science and Engineering, University of California, and Materials Sciences Division, Lawrence Berkeley National Laboratory )
报告时间: 2008年12月30日(星期二) 上午 10:00
报告地点: 中国科学院半导体研究所学术会议中心
Abstract：In recent years a unique class of materials, highly mismatched semiconductor alloys (HMAs), was identified. HMAs are composed of isovalent constituents with distinctly different electronegativity alloyed at fractions far beyond the solubility limit. Unlike conventional semiconductor alloys where the band structure generally interpolates between the end-point materials, in HMAs the hybridization between the extended states of the majority component and the localized states of the minority component results in a drastic band restructuring. Novel optical and electronic properties were observed in a broad range of HMAs such as GaAs1-xNx, ZnSe1-xOx, Ge1-xSnx, GaAs1-xBix, etc. In this talk he will review the theoretical basics and experimental findings in the development of the HMAs. He will also discuss the state-of-the-art applications of HMAs in a new generation of photovoltaics and thermoelectrics.
报告人简介：Professor Junqiao Wu received a B.S. from Fudan University and a M.S. from Peking University, China, both in physics. He obtained a Ph.D. degree from the University of California, Berkeley for work on nitride semiconductors. As a postdoctoral researcher in the Department of Chemistry at Harvard University, he worked on phase transitions in transition metal oxide nanomaterials. He began his faculty appointment in the Department of Materials Science and Engineering at the University of California, Berkeley in 2006. His honors include the Berkeley Fellowship, the 29th Ross N. Tucker Memorial Award, and the U.C. Regents' Junior Faculty Fellowship. The Wu group explores novel properties and applications of strongly correlated electron materials with reduced dimensions, phase transitions at the nanometer scale, and photovoltaics and thermoelectrics of semiconductor alloys. More information can be found at http://www.mse.berkeley.edu/~jwu
报告题目: Highly-Mismatched Semiconductor Alloys: Theory, Experiments and Applications
报告人: Prof. Junqiao Wu (Department of Materials Science and Engineering, University of California, and Materials Sciences Division, Lawrence Berkeley National Laboratory )
报告时间: 2008年12月30日(星期二) 上午 10:00
报告地点: 中国科学院半导体研究所学术会议中心
Abstract：In recent years a unique class of materials, highly mismatched semiconductor alloys (HMAs), was identified. HMAs are composed of isovalent constituents with distinctly different electronegativity alloyed at fractions far beyond the solubility limit. Unlike conventional semiconductor alloys where the band structure generally interpolates between the end-point materials, in HMAs the hybridization between the extended states of the majority component and the localized states of the minority component results in a drastic band restructuring. Novel optical and electronic properties were observed in a broad range of HMAs such as GaAs1-xNx, ZnSe1-xOx, Ge1-xSnx, GaAs1-xBix, etc. In this talk he will review the theoretical basics and experimental findings in the development of the HMAs. He will also discuss the state-of-the-art applications of HMAs in a new generation of photovoltaics and thermoelectrics.
报告人简介：Professor Junqiao Wu received a B.S. from Fudan University and a M.S. from Peking University, China, both in physics. He obtained a Ph.D. degree from the University of California, Berkeley for work on nitride semiconductors. As a postdoctoral researcher in the Department of Chemistry at Harvard University, he worked on phase transitions in transition metal oxide nanomaterials. He began his faculty appointment in the Department of Materials Science and Engineering at the University of California, Berkeley in 2006. His honors include the Berkeley Fellowship, the 29th Ross N. Tucker Memorial Award, and the U.C. Regents' Junior Faculty Fellowship. The Wu group explores novel properties and applications of strongly correlated electron materials with reduced dimensions, phase transitions at the nanometer scale, and photovoltaics and thermoelectrics of semiconductor alloys. More information can be found at http://www.mse.berkeley.edu/~jwu
