[18a-Z23-1~11] 12.2 Characterization and Materials Physics

[18a-Z23-8] Effects of 3d metal ions on electronic states at the interface between metal-phthalocyanine and In ultrathin films

〇Shinichiro Hatta¹, Akira Matsubara¹, Hiroshi Okuyama¹, Tetsuya Aruga¹ (1.Kyoto Univ.)

Keywords:organic/metal interface, metal phthalocyanine, electronic interface state

We have investigated electronic structure of the MPc (M=Fe, Co, Ni and Cu) monolayers formed on In/Si(111) by photoelectron spectroscopy. E_g-orbital-derived interface states were found for FePc and CoPc, while such states were not seen for the CuPc and NiPc. This result indicates the important role of the out-of-plane 3d orbitals in determining electronic interface states of the metal/organic heterostructures.