Fabrication and field emission properties of C60 nanorod formed by spin-cast treatment

Nanorod-shaped surfaces of C60 films with thicknesses ranging from 100 to 400 nm and lengths ranging from 2 to 3 urn have been successfully obtained by a spin-cast treatment with trans-1,2-dichloroethylene. Results of observations by scanning electron microscopy and field emission (FE) measurements show an obvious correlation between the shape of the C 60 nanorods and FE characteristics. By optimizing the conditions of the fabrication processes, the turn-on electric field was lowered from 25-30 to 17-20 V/μm. The nanorod-shaped surfaces of C60 films were still maintained even after a heat treatment under 250°C. ©2005 The Japan Society of Applied Physics.