学术讲座【Polarization Photoelectric Conversion in Layered Group IV Monochalcogenides: Theory and Experiments】
时间：2018年5月4日9：50
地点：旗山校区理工实验楼3-102
主讲：薛宏中 Hung-Chung Hsueh (淡江大学物理系教授)
主办：物理与能源学院、福建省量子调控与新能源材料重点实验室、福建省太阳能转换与储能工程技术研究中心
专家简介：
英国爱丁堡大学博士，美国加州大学柏克莱分校大学访问教授。专长为第一原理激发态电子结构计算、二维材料、高压物理
报告摘要：
Polarization photovoltaic effect is a unique character for an energy material with specific in-plane anisotropy. Especially if the energy material has a direct bandgap close to 1.6 eV, it will efficiently absorb full sunlight spectrum with specific axial polarizations. In this study, we present polarization-resolved optical transmission, thermoreflectance spectroscopy, and first-principles GW+BSE calculations of optical response in high quality stripe-like group IV monochalcogenides which is a potential candidate forapplication in polarization sensitive photodetector and polarized solar cell. Additionally, the dimensional effects on quasiparticle band gap, excitons, anisotropic optical absorption spectrum, and the interlayer coupling are studied by comparing our GW+BSE calculations of few-layer and bulk-like flakes of group IV monochalcogenides.[1]
[1] Hung-Chung Hsueh, Jia-Xuan Li, and Chin-Hwa Ho, Applied Optical Materials 6, 1701194 (2018)