Valence Electronic Structure at the Interface of an Organic Double-Layered Thin Film (INTERFACE SCIENCE-Molecular Aggregates)

Abstract

Valence electronic levels at the interfaces of a photovoltaic double-layered organic thin film prepared from N, N'- dimethylperylene-3, 4, 9, 10-bis(dicarboximide) (DM-PBDCI) and chloroaluminum phthalocyanine (ClAlPc) have been examined using ultraviolet photoelectron spectroscopy (UPS). The electronic structure of a DM-PBDCI film at the interface with a substrate demonstrates notable difference between ZnO and Cu. An energetic scheme for the interface of a ClAlPc/DM-PBDCI film is proposed on the basis of the obtained results.