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Giant Enhancement of Semiconducting Alloy Solubility: Concepts and Applications

创建于2019年06月10日 星期一作者 : 科研办 浏览量 :

主讲人:黄兵,北京计算科学研究中心教授
时  间:2019年6月11日19:00
地  点:物电学院A栋219
联系人:陈克求

 

 

讲座摘要:Solid solubility (SS) is one of the most important features for semiconducting alloys, which is difficult to be largely tuned in the entire alloy concentrations by external approaches. Some alloys that were supposed to have promising physical properties turn out to be much less useful because of their poor SS. In this talk, I will introduce several simple concepts to effectively tune the SS in a large range of two-dimensional alloy systems. For these alloys with phase inhomogeneity (PI) induced by structural instability, nonequilibrium growth conditions are proposed to balance the cluster attraction and repulsion and therefore enhance their SS; while for these alloys with PI induced by electronic structural instability, selective orbital couplings are proposed to stabilize the wrong-bond states and therefore enhance their SS. The realization of solid solutions has the very broad applications in optoelectronics, defect engineering and spintronics.  

 

主讲人简介:黄兵,2005年本科毕业于吉林大学物理学院, 2010年博士毕业于清华大学物理系(导师:段文晖院士)。2010-2016年在美国再生能源国家实验室、美国橡树岭国家实验室和美国犹他大学做博士后、研究助理和研究助理教授等。2015年下旬至今在北京计算科学研究中心任特聘研究员。研究工作集中在半导体物性的理论计算,目前在国际主流学术期刊发表论文>70篇,包括Phys. Rev.系列~30篇 (PRL/PRX 13篇), 发表论文被他引3000余次,H-index 31, 申请非线性半导体专利2项,撰写国际国内书籍章节三章。黄兵曾入选中组部青年千人计划和任中央军委国防973项目首席科学家。