讲座题目：Understanding Existing and Designing New Halide Perovskites from First Principles
主讲人：谢玮 博士
主持人：杨洋 研究员
开始时间：2019年1月9日 下午1: 30-2: 30
讲座地址：闵行校区物理楼226报告厅
主办单位：华东师范大学 物理与材料科学学院
报告人简介：
谢玮目前是加州大学伯克利分校材料科学与工程系博士后。其研究方向为基于电子与原子尺度建模仿真理解已知和发现新型固体功能材料及现象。他从北京化工大学获得高分子材料与工程本科、威斯康辛大学麦迪逊分校获得材料科学博士学位；曾获得David Turnbull研究奖（威斯康辛大学麦迪逊分校，2014年），和计算热力学奖学金（CALPHAD公司，2013年）。
Wei Xie is a postdoctoral researcher in the Department of Materials Science and Engineering at the University of California, Berkeley. His does theoretical modeling and computational simulations at electronic and atomistic scales to understand known and discover new solid-state functional materials and phenomena. He received B.E. in Polymer Materials and Engineering from Beijing University of Chemical Technology and PhD in Materials Science at the University of Wisconsin-Madison, and was a recipient of David Turnbull Research Paper Award (University of Wisconsin-Madison, 2014) and CALPHAD Scholarship (CALPHAD Inc., 2013).
报告内容简介：
金属卤化物钙钛矿及其衍生物具有优异的多功能性和高度可调性，易溶性、以及巨大的成分和结构多样性。我将介绍我们最近对这类材料的研究；
1）介绍了一种新型的无铅钙钛矿型卤化物光吸收剂；
2）解释了有机-无机复合钙钛矿的两性载流子特性；
3）理解有机无机杂化层状卤族钙钛矿衍生物白色荧光，动态Rashba-Dresselhaus能带劈裂和铁电的起源机理。
Metal halide perovskites and their derivatives are under intense global researches owing to their excellent highly-tunable and versatile multifunctionality, facile solution synthesizability, and great compositional and structural diversity. I will present our recent researches of this family of materials:
1) rational design and high throughput screening of fully inorganic and stable lead-free halide perovskites light absorbers;
2) explaining amphoteric carrier characteristics of hybrid organic-inorganic perovskites;
3) understanding the origins of white light emission, dynamic Rashba-Dresselhaus spin splitting and ferroelectricity in hybrid layered perovskite derivatives.