Nanostructed carbon and organic films: spectral microwave and optical characteristics

Physical materials technology

Microwave and optical transmission and reflection spectra of thin films prepared by casting the aqueous and dichloromethane solutions of fullerene, as well as casting the chloroform solution of 4-methylphenylhydrazone N-isoamylisatin have been recorded in the 2.5 – 4.0, 8.2 – 12.0 GHz and 19 – 110, 330 – 740 THz ranges. The carbon samples precipitated from dichloromethane were established to be the most sensitive to the microwaves. There were 3.4 and 9.1 GHz absorption peaks in their spectrum. The 20 – 50 and 78 – 108 THz IR intervals were chosen for investigation as the most pronounced. The fullerene-containing films, having a linear optical spectrum, exhibited the maximal absorption factor. The organic samples, having a sharp increase of optical absorption in the 599.6 – 713.8 THz high-frequency region, exhibited an absorption edge of 3.05 eV. In this case the surface photomicrographs demonstrated a rather ramified relief with nontrivial 3D forms dependent on the solution nature, notably prominent for fullerene surfaces.