Fullerene Films Deposited by Evaporation in Vacuum Using Spot-Focused Annular Electron Beam.

A rapidly focused annular electron beam can provide for the effective evaporation of a fullerene mixture in a vacuum of ∼10–2 Pa. A 1-kW beam focused into a spot within 0.1–1 s produces explosive evaporation of a fullerene target at an extremely high efficiency of heating. A comparison of the Raman and electronic absorption spectra of the initial fullerene powder and a film deposited upon its evaporation shows that C60 and C70 fullerenes are evaporated without rupture of C–C covalent bonds. The electron beam evaporation in vacuum has been successfully used to obtain fullerene films on substrates with an area of ∼0.1 m2. © 2005 Pleiades Publishing, Inc. [ABSTRACT FROM AUTHOR]