2013
Volume 13, Number 4, pp. 119-123
Structure and optical properties of ZnSe films obtained by the hydrochemical sedimentation method
O.M. Sofronova,1 O.I. Kostenyukova,2 D.S. Sofronov,1 V.V. Starikov,2 A.M. Lebedynskiy,1 P.V. Mateychenko,3 S.N. Lavrynenko2 and A.G. Mamalis4
1 Division of Chemistry of Functional Materials, SSI (Institute for Single Crystals), National Academy of Sciences of the Ukraine, Kharkov, Ukraine
2 National Technical University “Kharkov Polytechnic Institute”, Kharkov, Ukraine
3 Institute for Single Crystals, National Academy of Sciences of the Ukraine, Lenin Ave 60, Kharkov, Ukraine
4 Project Centre for Nanotechnology and Advanced Engineering (NCSR) “Demokritos”, Athens, Greece
The influence of hydrochemical sedimentation conditions in alkaline solutions on the phase structure, morphology and optical properties of ZnSe films was studied. It was shown that the cubic modification (sphalerite) was formed at alkali concentrations in the range 1-5 M NaOH. The purest films were made in 3 M NaOH solutions. Decrease of the alkali concentration to less than 1 M promoted formation of the ZnO phase. Films were formed by spherical particles with sizes 0.15-1.0 μm. The quantity of sedimentation cycles should be no more than two to obtain a homogeneous film. Films made in 1 M NaOH solution had the greatest transmission in the visible optical range and a sharp transition at the beginning of the ultraviolet range.
Keywords: film, hydrochemical sedimentation method, ZnSe