The mercury sulfide (HgS) films were obtained on glass substrates via the chemical deposition method. The aqueous solutions of mercury(II) nitrate, thiourea and trisodium citrate were used. X-ray and elemental analysis of the film sample were made. The effect of concentrations of initial reagents, deposition duration and temperature on the mass of HgS coatings was investigated and their thickness were calculated. The optical and morphological properties of HgS coating were examined.The mercury sulfide (HgS) film is one of the least investigated material of zinc subgroup metal chalcogenides [1]. The HgS coatings have potential use in solid state solar cells, photoelectrochemical cells etc. The one of the simplest methods for semiconductor films obtaining is chemical deposition [2]. This method based on synthesis at low temperature (˂ 373 K) and duration from aqueous solutions, which consist of the metal salt, complexing agent, chalcogenizer and, if it's necessary, the pH-regulator. Previously, the anodic stripping voltammetry method was used for the optimization of these parameters for synthesis of zinc and cadmium chalcogenides semiconductor films [3][4][5]. The series of films samples had dissolved in hydrochloric acid, then the measurements of metal content were made. In the case of mercury, this is difficult to apply, so the optimization of chemical deposition of HgS films could be done by gravimetric measurements.Chemical deposition of HgS films was carried out on preliminarily cleaned square shape glass substrates with the total area of 64.8 сm 2 . The composition of the working solutions were follows: 0.0025-0.015 M of mercury(II) nitrate (Hg(NO3)2), 0.01-0.05 M of thiourea (NH2)2CS, as a complexing and chalcogenizing agent for Hg 2+ at the same time; and 0.015-0.021 M of trisodium citrate (Na3C6H5O7), as a pH regulator. The deposition was made in a glass bath during 0.5-7 minutes at a temperature of 323-363 K. After this, the substrates were removed, washed with distilled water and dried in the air. The films samples were dark-brown in color. Their adhesion to the glass substrate was weak. The films were easily removed at applying of small mechanical efforts.Experimental arrays of intensities and angles of reflection of the test samples were obtained on a DRON-3.0 X-ray diffractometer (CuKα-radiation). Preliminary processing of the experimental diffraction arrays in order to identify the phases were carried out using PowderCell program [6]. ____________________  Sozanskyi M.

Abstract.1 Mercury selenide (HgSe) films were obtained on glass substrates via the chemical deposition method. The aqueous solutions of mercurium(II) nitrate, potassium iodide and sodium selenosulfate were used. Film samples obtained at two temperatures of synthesis were analyzed by X-ray and structural analysis. The effect of the deposition duration on the optical and morphological properties of HgSe films was investigated. The deposition mechanism was discussed.

The mercury selenide (HgSe) films were obtained on glass substrates via the chemical deposition method. The aqueous solutions of mercury(II) nitrate, sodium thiosulfate, sodium selenosulfate and tri-sodium citrate were used. X-ray and elemental analysis of the film sample were made. The effect of initial reagents concentration, synthesis duration and temperature on the mass of HgSe films was investigated and coatings thickness was calculated. The optical and morphological properties of HgSe films were examined. The deposition mechanism is discussed.

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Abstract. A mathematical model of the chemical surface deposition process of CdS and CdSe thin films, which allows determining the concentration of reagents, as well as duration and temperature for CSD needed to obtain films of the set thickness was designed. The adequacy of model was tested by Fisher's criterion. The nomogram of dependence of cadmium ions content on the initial deposition parameters was built according to the results of experimental studies and approximated by mathematical dependence.