Chemical surface
deposition of Cd(S, Se) films: influence of the starting cadmium-containing
salt on microstructure and optical properties
Chem.
Met. Alloys 6
(2013) 48-54
https://doi.org/10.30970/cma6.0241
Ruslana GUMINILOVYCH, Pavlo SHAPOVAL, Iosyp
YATCHYSHYN, Victor KUSNEZH, Hryhoriy IL’CHUK,
Martyn SOZANSKIY
The influence of the nature of the
initial cadmium-containing salt on the structure, microstructure, morphology
and optical properties of semiconductor CdS and CdSe films, obtained by chemical
surface deposition (CSD), was studied. Transmission and absorption optical
spectra and the surface morphology of the films were investigated. The obtained
films are characterized by the availability of a fundamental absorption edge,
which is formed by direct interband optical transitions. The results of the
study of the surface morphology by atomic force and scanning electron
microscopy showed that the conglomerates on the surface coatings are CdS and
CdSe particles with different stoichiometry than the film. The content of
cadmium ions in the obtained coatings was determined by inversion voltammetry.
The thickness of the semiconductor films was calculated from the mass of
cadmium. The possibility of producing stable CdS and CdSe films, suitable for
solar cells based on heterojunctions, was demonstrated.
Surface morphology of CdS film
obtained from CdCl2
Keywords
Semiconductor films / Chemical
surface deposition / Structure and morphology of thin films / Atomic force and
scanning electron microscopy