▎ 摘　　要

The adsorption, electronic structure, and thermodynamics of C-60 molecules on Ir(111) and graphene/Ir(111) surfaces have been investigated by combining scanning tunneling microscopy and spectroscopy as well as density functional theory calculations. C-60 is found to interact strongly with the Jr surface, leading to a spontaneous formation of graphene on the Jr surface at elevated temperatures. The introduction of a graphene interlayer at the C-60/Ir(111) interface dramatically affects the interface properties, including the formation of larger molecular islands, improvement in ordering of molecular arrangements, suppression of charge transfer between C-60 and Ir, and thermal desorption of C-60 from the surface without decomposition or polymerization. We also find that C-60 is an effective solid precursor for preparing small-sized graphene quantum dots as well as graphene layers on the Ir surface.