▎ 摘　　要

The growth of carbon layers, defective graphene, and graphene by deposition of polycyclic aromatic hydrocarbons (PAHs) on Cu(111) is studied by scanning tunneling microscopy and X-ray photoelectron spectroscopy. Two different PAHs are used as starting materials: the buckybowl pentaindenocorannulene (PIC) which contains pentagonal rings and planar coronene (CR). For both precursors, with increasing sample temperature during deposition, porous carbon aggregates (350 degrees C), dense carbon layers (400-450 degrees C), disordered defective graphene (500 degrees C-550 degrees C), and extended graphene (>= 600 degrees C) are obtained. No significant differences for defective graphene grown from PIC and CR are observed. C 1s X-ray photoelectron spectra of PIC and CR derived samples grown at 350-550 degrees C exhibit a characteristic C-Cu low binding energy component. Preparation at >= 600 degrees C eliminates this C-Cu species and only C-C bonded carbon remains.