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Article Dans Une Revue Surface Engineering Année : 1999

Carbon nitride thin films and nanopowders produced by CO2 laser pyrolysis

Rodica Alexandrescu
  • Fonction : Auteur
Raluca Cireasa
I. Morjan
  • Fonction : Auteur
F. Vasiliu
  • Fonction : Auteur
Ashok Kumar
  • Fonction : Auteur

Résumé

Nanocrystalline CNx particles and thin films were produced in a flow reactor system by the CO2 laser pyrolysis of sensitised NH3-N2O-C2 H2reactant gas mixtures. Depending on the substrate nature (silicon or quartz) the SEM and TED analysis of the CNx thin films revealed specific nucleation and growth morphologies of crystallites, resembling the β-C3 N4 phase. In the case of C3 N4 nanopowder synthesis, the relative concentration of the sensitisers (SF6 /C2 H4 ) was varied to minimise SF6 decomposition. The majority of the data obtained from powder analysis (XRD, XPS, and ir transmission measurements) suggests the presence of CN bonded phases and the formation of α-and β-C3 N4 structures.
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Dates et versions

hal-00541121 , version 1 (29-11-2010)

Identifiants

  • HAL Id : hal-00541121 , version 1

Citer

Rodica Alexandrescu, Raluca Cireasa, Costel Sorin Cojocaru, Aurelian Crunteanu, I. Morjan, et al.. Carbon nitride thin films and nanopowders produced by CO2 laser pyrolysis. Surface Engineering, 1999, 15 (3), pp.230-234. ⟨hal-00541121⟩
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