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Development of Fe-doped SnO2- based nanocomposites prepared by single-step laser pyrolysis

R. ALEXANDRESCU1,* , I. MORJAN1, F. DUMITRACHE1, R. BIRJEGA1, C. FLEACA1, C. R. LUCULESCU1, E. POPOVICI1, I. SOARE1, I. SANDU1, E. DUTU1, G. PRODAN2

Affiliation

  1. National Institute for Lasers, Plasma and Radiation Devices, P.O. Box MG 36, R-077125, Bucharest, Romania.
  2. Ovidius University of Constanta, Constanta, Romania

Abstract

We report a new synthesis technique for the preparation of Fe-SnO2, namely the CO2 laser pyrolysis of gas phase reactants. Tetramethyl tin, air and iron pentacarbonyl were used as precursors. At increased oxygen in mixtures, the SnO2 phase (mean crystallite sizes about 12 nm) largely prevails over the other two crystallographic phases: SnO and Sn. Different Fe/Sn ratios (from about 0.01 to 0.08 in at %) were obtained by varying the process parameters. No iron compounds were identified by diffraction techniques. With increased Fe doping, an overall decrease of the diffraction peaks and an inhibited particle growth may be observed.

Keywords

Tin oxide, Nanoparticles, Laser pyrolysis, Fe doped SnO2.

Submitted at: June 17, 2009
Accepted at: Feb. 27, 2010

Citation

R. ALEXANDRESCU, I. MORJAN, F. DUMITRACHE, R. BIRJEGA, C. FLEACA, C. R. LUCULESCU, E. POPOVICI, I. SOARE, I. SANDU, E. DUTU, G. PRODAN, Development of Fe-doped SnO2- based nanocomposites prepared by single-step laser pyrolysis, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 3, pp. 599-604 (2010)