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

• Subject Area: Experimental Condensed Matter Physics
• Term: Funded in 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 182849149

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).

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 953: Synthetic Carbon Allotropes
• Major Instrumentation: LEED system with microchannel plate
• Instrumentation Group: 5160 Elektronenbeugungs-Apparaturen, LEED-, RHEED-, SHEED-Apparaturen
• Applicant Institution: Friedrich-Alexander-Universität Erlangen-Nürnberg
• Project Head: Dr. Daniel Niesner, until 4/2020