Microscopic Theory of Optical Excitations in Interface-Dominated Material Systems (B04)

本项目研究界面主导型半导体材料中电子-空穴对激发的微观模拟。我们的目标是分析光学线性和非线性响应以及空间非均匀激子的形成动力学，其中组成电子和空穴位于由内部界面隔开的相邻材料区域。作为模型系统，我们重点研究了(I)半导体异质结构和(Ii)由过渡金属二卤化物的准二维层组成的van-der-Waals键系统。

This project deals with the microscopic modelling of electron-hole-pair excitations in interface dominated semiconductor materials. The goals are the analysis of the optically linear and nonlinear response and the formation dynamics of spatially inhomogeneous excitons where the constituting electrons and holes are located in neighbouring material regions that are separated by an internal interface. As model systems, we focus (i) on semiconductor heterostructures and (ii) van-der-Waals bonded systems consisting of quasi-two-dimensional layers of transition-metal dichalcogenides.