Berlin 2018 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 81: Poster Focus Session: Molecular Nanostructures on Surfaces - New Concepts towards Complex Architectures
O 81.9: Poster
Mittwoch, 14. März 2018, 18:15–20:30, Poster A
Synthesis of different experimental techniques in surface science: DBP films on graphitic sufaces — •Tino Kirchhuebel1, Fabio Bussolotti2, Jinpeng Yang4, Keiichirou Yonezawa2, Ryo Shiraishi2, Takuma Yamaguchi2, Taka Ueba2, Ryosuke Mori3, Shogo Kunieda3, Takashi Yamada3, Tobias Huempfner1, Roman Forker1, Toshiaki Munakata3, Satoshi Kera2,4, and Torsten Fritz1 — 1FSU Jena, Germany — 2IMS Okazaki, Japan — 3Osaka University, Japan — 4Chiba University, Japan
We present a comprehensive study on highly ordered thin films of the lander molecule tetraphenyldibenzoperiflanthene grown on graphitic surfaces. The spectra from ultraviolet photoelectron spectroscopy (UPS) combined with inverse photoelectron spectroscopy (IPES), two-photon-photoemission (2PPE), and optical spectroscopy (DRS) are discussed in context with the film structure, investigated with scanning tunneling microscopy (STM) and low energy electron diffraction (LEED). The interpretation of different spectroscopic data is a challenging task. Here, the comparison reveals seeming discrepancies regarding the coverage dependent energy level alignment of DBP films. Facing this problem, a model based on charging and polarization effects is introduced, which explains the observations consistently.