Preferred Label : diamond by CVD;
IUPAC acronym : CVD;
IUPAC definition : Diamond by CVD (chemical vapour deposition) is formed as crystals or as films from
various gaseous hydrocarbons or other organic molecules in the presence of activated,
atomic hydrogen. It consists of sp3-hybridized carbon atoms with the three-dimensional
crystalline structure of the diamond lattice.;
Scope note : cvd diamond or low-pressure diamond are synonyms of the term diamond by cvd. diamond
by cvd can be prepared in a variety of ways. deposition parameters are: total (low)
pressure, partial hydrogen pressure, precursor molecules in the gas phase, temperature
for activation of the hydrogen and that of the surface of the underlying substrate.
the energy supply for the hydrogen activation may be, for instance: heat, radio frequency,
microwave excitation (plasma deposition) or accelerated ions (e.g. ar1 ions). cvd
diamond has also been obtained at atmospheric pressure from oxyacetylene torches and
by other flame-based methods. often cvd carbon films consist of a mixture of sp2-
and sp3-hybridized carbon atoms and do not have the three-dimensional structure of
the diamond lattice. in this case they should be called hard amorphous carbon or diamond-like
carbon films.;
Origin ID : D01672;
False automatic mappings
- See also
Diamond by CVD (chemical vapour deposition) is formed as crystals or as films from
various gaseous hydrocarbons or other organic molecules in the presence of activated,
atomic hydrogen. It consists of sp3-hybridized carbon atoms with the three-dimensional
crystalline structure of the diamond lattice.
