Vp. Novikov et Vp. Dymont, SYNTHESIS OF DIAMOND-LIKE FILMS BY AN ELECTROCHEMICAL METHOD AT ATMOSPHERIC-PRESSURE AND LOW-TEMPERATURE, Applied physics letters, 70(2), 1997, pp. 200-202
A technique of carbon film synthesis based on an electrochemical proce
ss was developed. A solution of acetylene in liquid ammonia was employ
ed as the electrolyte. Films were deposited at the metallic anode. Two
types of films were produced. Films of type I are transparent and fra
gile, whereas those of type IT are black and plastic. The films were i
nvestigated by the electron diffraction method and Raman spectroscopy.
The electron diffraction data for type I films demonstrate the films'
high degree of crystallinity. Values of lattice plane spacings agree
with data on cubic diamond modifications. The Raman spectrum of type I
films shows a line at 1334 cm(-1) (full width at half-maximum equal t
o 15 cm(-1)), inherent in that of diamond and an essentially amorphous
carbon component. Spectra of the type II films do not feature the Ram
an peak of diamond. (C) 1997 American Institute of Physics.