摘要
Silicon is an extremely important electronic material in technological fields, but it is not a good optoelectronic material. In the last few decades, researchers have heavily studied the structural and electronic properties of silicon in order to improve its optical absorption in the visible light range using analyses of metastable silicon phases, silicon-based alloys, and silicon-based superlattices. In this talk, I will present our recent theoretical efforts on searching and designing new silicon phases, from bulk to two-dimensional (2D) silicon, with exceptional optoelectronic properties. Especially, we find that chemically functionalized 2D silicon could be the best candidates to create efficient thin-film solar absorbers and silicon-based, white-light-emitting diodes, paving the way for new “green” energy applications.
Host: Wang Xiaoqun xiaoqunwang@sjtu.edu.cn
Contact: Zhu Min zhumin@sjtu.edu.cn
报告人简介
黄兵博士于2005年7月毕业于吉林大学物理学院,2010年7月在清华大学获得物理学博士学位。在2010年8月 至 2013年12月期间,在美国能源部再生能源实验室从事博士后研究;从2014年1月至今,在美国橡树岭国家实验室工作,为Research Associate。多年来,他运用第一性原理等计算方法,从事低维材料,合金,和能源材料等体系的原子结构、电学、光学、磁学以及掺杂和缺陷等研究领域的前沿研究,取得了多项重要的原创性科研成果;至今已发表学术论文40余篇,包括6篇《物理评论快报》(第一作者5篇)、1篇《纳米快报》和1篇《JACS》高端论文,总引用次数1000余次和h因子为14。