Electronic Couplings in the Excited States of Crystalline and of Structured Carbon-based Solids (B14*)

晶体和结构化碳基固体激发态的电子耦合 (B14*)

• 批准号: 437191869
• 金额: --
• 依托单位: Lehrstuhl für Festkörperphysik
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/437191869?language=en
• 关键词: Electronic; Couplings; Excited; States; Crystalline

The project will determine the electronic coupling strengths in inter-SCA-architectures using time- and angle-resolved (two-photon) photoelectron spectroscopy. The coupling strengths are crucial for the functionality of inter-SCA-architecture, and difficult to quantify using other techniques. A first work package will focus on carbon-based two-dimensional networks coupled by organometallic and covalent bonds. These systems are synthesized directly in ultrahigh vacuum using on-surface chemistry. A part of the project aims to decouple the networks from the surface to make them accessible to photophysical experiments and potential applications. A second work package investigates the non-covalent couplings in three-dimensional crystals of SCAs and in co-crystals of SCAs and molecular π systems, respectively. Different geometries (flat and curved π systems) will be studied. A third work packages will make the unique experimental facilities of our group accessible to other projects within the SFB 953 (electron emission from diamondoid-coated surfaces and from graphene-based devices, electronic structure of carbon nano-onions).

该项目将使用时间和角度分辨(双光子)光电子能谱来确定SCA结构间的电子耦合强度。耦合强度对于SCA间体系结构的功能至关重要，并且很难使用其他技术来量化。第一个工作包将侧重于通过有机金属键和共价键连接的碳基二维网络。这些体系是在超高真空中利用表面化学直接合成的。该项目的一部分旨在将网络与表面分离，使它们能够用于光物理实验和潜在的应用。第二个工作包分别研究了SCAs三维晶体中的非共价耦合以及SCAs和分子π体系的共晶中的非共价耦合。将研究不同的几何结构(平面和曲面π系统)。第三个工作包将使我们小组独特的实验设备可供SFB 953中的其他项目使用(金刚石涂层表面和石墨烯设备的电子发射，碳纳米洋葱的电子结构)。