The Conditions Effect of Obtaining CdS and CdSe Films on their Structural and Optical Properties

Shapoval, Pavlo; Guminilovych, Ruslana; Yatchyshyn, Iosyp

doi:10.23939/chcht07.03.345

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…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.…”

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confidence: 99%

Optimization of synthesis conditions of HgS thin films

Sozanskyi¹,

Stadnik²,

Guminilovych³

et al. 2019

Visnyk Lviv Univ. Ser. Chem.

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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.

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confidence: 99%

Optimization of synthesis conditions of HgS thin films

Sozanskyi¹,

Stadnik²,

Guminilovych³

et al. 2019

Visnyk Lviv Univ. Ser. Chem.

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“…Deposition of CdSe films occurs on substrates immersed in a bath with the working solution during a certain duration of the CBD process. The newer CSD method was proposed in [13,14]. This method is also based on the reaction between dissolved chemicals in an aqueous solution.…”

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confidence: 99%

Comparison of Structural and Optical Properties of CdSe Films Grown by CSD and CBD Methods

Sozanskyi¹,

Shapoval²,

Gnativ³

et al. 2022

J. Nano- Electron. Phys.

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Cadmium selenide (CdSe) films were synthesized on glass substrates via chemical surface deposition (CSD) and chemical bath deposition (CBD) methods. Aqueous solutions of cadmium chloride, thiourea, sodium selenosulfate, trisodium citrate and ammonia hydroxide were used. Theoretical calculations of the boundary conditions for the formation of cadmium selenide and cadmium hydroxide were carried out in the cadmium-selenosulfate and cadmium-selenosulfate-citrate-ammonia systems. The phase composition, optical transmission spectra and surface morphology of deposited CdSe films were investigated. According to the X-ray analysis, the film samples are single phase and consist of CdSe compound in its typical cubic modification. The film surface is solid, smooth and has a small number of surface defects. The optical transmission of CdSe films increases in the investigated wavelength area from 340 to 900 nm. The transmission curves have bends in the 650 nm region, which is typical for cadmium selenide. The optical band gap values of CdSe films are found to be in the range of 1.82-1.88 eV.

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“…Technologically convenient way of obtaining these films is a chemical deposition [3][4]. The optimization of this process has been made for zinc and cadmium chalcogenides [5][6][7]. It is based on determination of metal content by anodic stripping voltammetry in a water solution, prepared by dissolving thin films [8][9].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Synthesis Conditions of Mercury Selenide Thin Films

Sozanskyi¹,

Stadnik²,

Shapoval³

et al. 2020

ChChT

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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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The Conditions Effect of Obtaining CdS and CdSe Films on their Structural and Optical Properties

Cited by 5 publications

References 9 publications

Optimization of synthesis conditions of HgS thin films

Optimization of synthesis conditions of HgS thin films

Comparison of Structural and Optical Properties of CdSe Films Grown by CSD and CBD Methods

Optimization of Synthesis Conditions of Mercury Selenide Thin Films

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