Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 17: Poster Monday: Organic Molecules at Surfaces 1
O 17.1: Poster
Montag, 5. September 2022, 18:00–20:00, P4
Influence of a BlueP interlayer on the properties of P2O on Au(111) — •Florentine Friedrich, Maximilian Schaal, Felix Otto, Philip Grimm, Marco Gruenewald, Roman Forker, and Torsten Fritz — Institute of Solid State Physics, Friedrich Schiller University Jena, Helmholtzweg 5, 07743 Jena, Germany
Two-dimensional (2D) materials have attracted much attention in solid state physics in recent years due to their unique properties. Amongst others, one novel representative is the phosphorus allotrope blue phosphorene (BlueP) with its high charge carrier mobility and suitable band gap, that is used here as an interlayer to obtain a decoupling of the functional organic molecule 6,13-pentacenequinone (P2O) from Au(111) surfaces. P2O is deposited in various film thicknesses (1 monolayer equivalent (MLE) up to 4-5 MLE) either on BlueP on Au(111) or directly on the metal substrate to investigate the influence of BlueP as an interlayer on the optical and structural properties of the P2O molecules. The film growth of P2O is monitored by in-situ differential reflectance spectroscopy (DRS), while the BlueP-Au substrate is kept at different temperatures. Further complementary experimental methods were low-electron energy diffraction (LEED), X-ray photoelectron spectroscopy (XPS), and low-temperature scanning tunneling microscopy (LT-STM). It turns out that the BlueP interlayer influences the monolayer structure as well as the growth mode. In contrast to previous studies on C60, the BlueP interlayer stays intact.