DOI: 10.17586/2226-1494-2017-17-1-46-51


FORMATION OF NANOSTRUCTURED CuO FILM ON FLUOROPHOSPHATE GLASS SURFACE

E. V. Kolobkova, M. D. Ba, A. S. Kochetkova


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Article in Russian

For citation: Kolobkova E.V., Ba Minh Dinh, Kochetkova A.S. Formation of nanostructured СuО film on fluorophosphate glass surface. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2017, vol. 17, no. 1, pp. 46–51. doi: 10.17586/2226-1494-2017-17-1-46-51

Abstract

The paper deals with СuОfilms on the fluorophosphate glass surface composed of 25Na2O-50P2O5-10Ga2O3-10AlF3-5ZnO doped with 2, 4, 5 mol. %. CuCl over 100%. The films are obtained by the out-diffusion mechanism within the heat retreatment of the samples. We have studied the influence of copper concentration, redox conditions of the synthesis and the temperature - time parameters of heat treatment. X-ray phase analysis has shown that in the heat treatment temperature range of T = 380 – 420°C in the air the CuO film is formed by nanocrystals with an average size of 16 – 18 nm, and the increasing of heat treatment temperature and time leads only to the film thickness growth. It is shown that the film surface consists of crystallites with irregular shape; the lateral size is in the range of 100–350 nm, and the visible part level is equal to 15–25 nm. The average surface roughness measured on a scan area of 1×1 µm is equal to 3.1 nm. It is found out that Cu2O or metallic copper nanocrystals are formed in reducing conditionsdepending on the duration of the heat treatment process.


Keywords: fluorophosphates glasses, copper, nanocrystals, thin films, absorptions spectra

Acknowledgements. The research was funded by the Russian Science Foundation (Project No.14-23-00136)

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