[13p-A405-1~17] 12.2 Characterization and Materials Physics

[13p-A405-15] 2D materials as decoupling layer: Investigation of the physical properties of DBP on Ni(111) with and without an h-BN interlayer

〇Takumi Aihara¹, Maximilian Schaal², Felix Otto², Marco Gruneward², Torsten Fritz², Hiroyuki Yoshida^1,3 (1.Chiba Univ., 2.Friedrich-Schiller-Univerasity Jena, 3.MCRC, Chiba Univ.)

Keywords:two-dimensional material (h-BN), electron decoupling, change of the molecular structure

The presence of a 2D material affects the growth mode of an epitaxial thin film grown upon and its electronic states. The versatility of molecular growth on 2D material interfaces has led to both fundamental research and prospective applications. In this work, we examine the change of various properties such as the electronic states and the lateral structure of an organic adlayer, composed of DBP (tetraphenyldibenzoperiflanthene), due to the presence of an h-BN interlayer between the molecule and the Ni(111) substrate. For the main measurement, we use DRS, LEED and UPS.From these results, we can confirm that the insertion of h-BN promotes the electron decoupling between DBP and Ni(111) and induces a change of the molecular structure as well.