Theory of ultrafast exciton interaction and spectroscopy at atomically thin semiconductor monolayer/organic molecule interfaces (B12)

原子薄半导体单层/有机分子界面超快激子相互作用和光谱学理论（B12）

• 批准号: 279974920
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/279974920?language=en
• 关键词: Theory; ultrafast; exciton; interaction; spectroscopy

A many body theory for the optical dynamics at TMDC-semiconductor/organic molecule interfaces (TMDC: transition metal dichalcogenide) on a mesoscopic scale is developed. The focus is on the dynamics during and after short pulse excitation of hybrid inorganic/organic system (HIOS) excitons and describes their formation, nonlinear interaction and decay as function of geometry, level alignment, exciton-vibron interaction, disorder, and doping. For this, HIOS-Bloch equations are used to explore the conditions where the HIOS coupling for charge and excitation transfer is relevant in comparison to internal interactions of the individual constituents. The predicted HIOS dynamics is used to analyze time resolved (non-)linear optical spectroscopy and in electron spectroscopy.

开发了介观尺度上 TMDC-半导体/有机分子界面（TMDC：过渡金属二硫族化物）光学动力学的多体理论。重点是混合无机/有机系统 (HIOS) 激子的短脉冲激发期间和之后的动力学，并描述它们的形成、非线性相互作用和衰减作为几何形状、能级排列、激子-振动子相互作用、无序和掺杂的函数。为此，HIOS-Bloch 方程用于探索与各个成分的内部相互作用相比，电荷和激发转移的 HIOS 耦合相关的条件。预测的 HIOS 动力学用于分析时间分辨（非线性）线性光谱和电子光谱。