Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 54: Organic Molecules on Inorganic Substrates III: Magnetism, Doping and Interfaces
O 54.7: Vortrag
Mittwoch, 3. April 2019, 12:00–12:15, H24
Determining Dispersion Relations of strong coupling Metal/Organic Hybrid Structures — •Maximilian Rödel1, Thomas Stark2, Jochen Manara2, and Jens Pflaum1,2 — 1Experimental Physics VI, Julius Maximilian University of Würzburg, 97074 Würzburg — 2Bavarian Center for Applied Energy Research (ZAE Bayern), 97074 Würzburg
Light matter interaction has been in the focus of intense research in recent years because of its feasibility of tuning the optical properties of sub-wavelength devices and interfaces. In particular, combining nanostructured metallic surfaces with organic semiconducting layers, new coupling phenomena emerge. In this contribution, we investigate the dispersion relations of plexcitons, i.e. of strongly coupled surface plasmons at metallic interfaces and localized excitonic states within a molecular adsorbant layer. For this purpose F16ZnPc layers have been chosen due to their strong emission enhancement in close proximity to suited metal surfaces [1]. We demonstrated that the momentum dependent Eigenstates and related energies of the detected plexcitons provide detailed insights in the microscopic characteristics such as coupling strength of ≈100 meV or effective interface dielectrics. Furthermore, the role of morphology on the plexciton dispersion is examined by comparing polycrystalline and single crystalline organic layers allowing for an evaluation of their respective potential for innovative opto-electronic devices.
[1] V. Kolb, J. Pflaum, Opt. Express 25 (2017) 6678