Sb mediated C-60 film growth on mica, Si, and glass substrates

The structure and growth morphology of Sb mediated C-60 films, prepared by predepositing a layer of surfactant Sb over mica(001), Si(111), and glass s ubstrates with the vacuum vapor deposition method, were studied along with pristine C-60 films by an atomic force microscope. It was found that the gr owth behavior of C-60 films was greatly affected by the substrate temperatu re. On the mica substrate, the average size of C-60 crystal grains in Sb me diated C-60 films was about two times larger than that in pristine C-60 fil ms. On Si and glass substrates, the predeposited Sb had no significant effe ct on the size of the C-60 crystal grains, but made C-60 films grow more ea sily especially at high substrate temperatures. Possible growth mechanisms of the Sb mediated C-60 films are proposed. (C) 1999 American Institute of Physics. [S0021-8979(99)09120-3].