Preparation of fullerene polycrystalline films on different substrates by physical vapor deposition

Abstract

Fullerene (C60) films were prepared on Si, ITO, and Cu substrates by the physical vapor deposition (PVD) method. It was observed that the morphology and structure of fullercne films strongly depend on the substrates. Along with the interactions between fullerenes and substrates increasing from ITO, Si to Cu substrate, C60 forms small polycrystalline grains, large polycrystalline grains and fullerene oligomers under the same experimental conditions. The irreversible C60 polymerization on Cu substrate is suggested to be catalyzed by the copper metal. © 2007 Society of Nano Science and Technology.