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PRODUCTION OF TeO2-ZnO GLASSES BY CHEMICAL VAPOR DEPOSITION FROM ORGANO-METALLIC COMPOUNDS

A. N. Moiseev1, A. V. Chilyasov1,* , V. V. Dorofeev1, O. A. Vostrukhin1, E. M. Dianov2, B. G. Plotnichenko2, V. V. Koltashev2

Affiliation

  1. Institute of Chemistry of High-Purity Substances of RAS, Nizhny Novgorod, Russia
  2. Fiber Optics Research Center at General Physics Institute of RAS, Moscow, Russia

Abstract

A mechanically durable TeO2 – ZnO (15-30 mol.% ZnO) soot is produced by CVD method from the gas phase with the use of organo-metallic compounds. The phase composition and degree of crystallization of the soot depend on the deposition substrate temperature. At deposition temperatures lower than the crystallization temperature an amorphous soot is produced with the Raman spectra being identical to the spectra of glass produced by melting oxides. The amorphous soot melts at temperatures below 400 0 . At deposition temperatures exceeding 420 0 the crystalline phases of -TeO2 and Zn2Te3O8 are determined by the methods of X-ray diffraction and Raman spectroscopy. The crystallization grows up to 90% at deposition temperatures of 620-650 . This soot melts at 620-650 with glass formation. The water content in glass produced by annealing of the melt in air is at the level of 100 ppm in accordance with the IR spectroscopy results. Treatment and melting of the soot in the flow of dry oxygen lowers the content of OH-groups down to 5-6 ppm..

Keywords

CVD, Tellurite glasses, Phase composition, Organo-metallic compound.

Submitted at: May 20, 2005
Accepted at: July 21, 2005

Citation

A. N. Moiseev, A. V. Chilyasov, V. V. Dorofeev, O. A. Vostrukhin, E. M. Dianov, B. G. Plotnichenko, V. V. Koltashev, PRODUCTION OF TeO2-ZnO GLASSES BY CHEMICAL VAPOR DEPOSITION FROM ORGANO-METALLIC COMPOUNDS, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 4, pp. 1875-1879 (2005)