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O: Fachverband Oberflächenphysik
O 34: Poster Session III: Organic molecules on inorganic substrates: Adsorption and growth III
O 34.9: Poster
Tuesday, March 2, 2021, 10:30–12:30, P
[n]Phenacene: Growth, Electronic Properties and On-Surface-Synthesis — •Akash Gupta1, Paul Yu-Hsiang Yen1, Hsuan Ting Lin1, Wun Chang Pan1, Yong-He Pan1, Germar Hoffman1, and Hideki Okamoto2 — 1Department of Physics, National Tsing Hua University, Hsinchu, Taiwan — 2Department of Chemistry, Okayama University, Japan
Chemical functionalization of solid surfaces and the study of respectively formed organic-metal interfaces from self-assembled molecular films to stacked layers attain a lot of attention. By means of an atomically precise design through a chemical approach, new materials and interfaces for organic electronics can be engineered. This offers a path to low cost, mechanically flexible, low weight components for organic electronics, such as OLEDs and OFETs through a chemistry driven bottom-up approach.
Pentacene, with a linear arrangement of five benzene rings, is intensively studied for prototype transistors but degrades under the presence of Oxygen. The chemically more robust [n]Phenacene, with n in a repeating W-shaped pattern fused benzene rings, was recently introduced as a promising alternative. Thereby, the electron mobility increases with n, the number of benzene rings.
Here, we study the growth and electronic properties of [10]Phenacenes on Au(111) and Ag(111) by Scanning Tunneling Microscopy/Spectroscopy at 77K and compare it to [5], [7], [9]Phenacene. The possibility of On-Surface-Synthesis of functionalized Phenacenes is discussed.