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M. Guenfoud^∗, M. Hamouda
Chalcogenide Letters, Vol.20, No.10, pp. 697-708, 2023, DOI:10.15251/CL.2023.2010.697
Abstract Recently, BiCuTeO is considered as one of the promising thermoelectric materials due to its ultra-low thermal conductivity. For this reason, the thermoelectric characteristic of this material has been studied to evaluate the lattice thermal conductivity ( More >

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R. Ranjan^a,b, C. M. S. Negi^b, S. K. Choubey^a, K. P. Tiwary^c,*
Chalcogenide Letters, Vol.20, No.10, pp. 709-724, 2023, DOI:10.15251/CL.2023.2010.709
Abstract Manganese-doped cadmium sulphide semiconductor nanoparticles (CdS: Mn) NPs have been created utilizing a microwave-assisted solvothermal technique at different Mn concentrations (0, 1%, 3%, and 5%). The chemicals utilized for the preparation of Mn doped CdS nanoparticles were sodium sulphide (Na₂S.xH₂O), manganese chloride (MnCl₂.4H₂O), and cadmium acetate (CH₃COO)₂Cd., H₂O). To determine the structural dimensions of the generated nanoparticles, the Debye-Scherer equation was used to calculate the average crystallite size at the full-width half maximum (FWHM) of the diffraction peaks. FTIR spectra analysis was used to look at the various functional and vibrational groups present in the Mn-doped CdS More >

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O. V. Iaseniuc^*, M. S. Iovu
Chalcogenide Letters, Vol.20, No.10, pp. 725-731, 2023, DOI:10.15251/CL.2023.2010.725
Abstract In the present work some nanostructured quaternary chalcogenides of the As-S-Sb-Te sys tem have been investigated by a photoelectric method. The spectral distribution of steady state photocurrent I_ph=(λ) and the relaxation curves of photocurrent I_ph=(t) were registered at positive and negative polarity of the applied voltage to the top Al illuminated electrode. In the spectral distribution of steady-state photocurrent, for the amorphous thin films As_1.17S_2.7Sb_0.83Te_0.40, As_1.04S_2.4Sb_0.96Te_0.60, As_0.63S_2.7Sb_1.37Te_0.30, and As_0.56S_2.4Sb_1.44Te_0.60 in the wavelength range λ=0.50÷0.92 mm (2.48÷1.35 eV) some maxima were detected, which are the result of the presence of binary clusters As₂S₃, Sb₂S₃ and Sb₂S₃. The photo voltaic method was used More >

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M. H. Mustafa, H. M. Ali^*, G. S. Ahmed, B. H. Hussein
Chalcogenide Letters, Vol.20, No.10, pp. 733-740, 2023, DOI:10.15251/CL.2023.2010.733
Abstract We studied at the morphology, structural setup, and optical characteristics of thin cadmium (CdSe) films a thickness of 250 nm that were created by thermal evaporation over glass, The films exhibited a hexagonal shape were crystalline, and tended to form grains in the (111) crystallographic direction, according to the X-ray diffraction examinations. These characteristics were established using the investigation's findings. Through the use of thin films of CdSe doped with Ag at a concentration of 1.5%, the crystal structure orientations for pure CdSe (25.32, 41.84) and CdSe:Ag (25.39, 41.01) that were both pure as well More >

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T. X. Liu^a, C. A. Guo^a,*, F. S. Lu^b, X. Y. Zhang^a,c, L. Zhang^b, Z. J. Wang^a, Z. Y. Xu^a, G. L. Zhu^a
Chalcogenide Letters, Vol.20, No.10, pp. 741-749, 2023, DOI:10.15251/CL.2023.2010.741
Abstract Electrospark deposition coatings were prepared with different deposition voltage on CrNi3MoVA steel substrates by using a W-WS₂ sintered electrode and their tribological properties were investigated. The microhardness, roughness and tribological properties of the coatings were tested by using Vickers hardness tester, confocal laser scanning microscope and tribometer, and the morphologies, composition and phase structure were obtained by utilizing scanning electron microscopy (SEM), energy dispersive X-ray spectrum (EDS) and X-ray diffraction(XRD). The results showed that with the increase of deposition voltage, the hardness and roughness of the coatings increase. The coatings remarkably increase the tribological properties of More >

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A. Nouri^*, D. Dekhil, H. Guessas
Chalcogenide Letters, Vol.20, No.10, pp. 753-758, 2023, DOI:10.15251/CL.2023.2010.753
Abstract SnS nanostructures were prepared using the electrodeposition technique in aqueous solutions containing 0.1M of SnSO4 and Na2SO4. Three concentrations (0.05M, 0.10M, and 0.15M) of Na2SO4 were tested. The electrodeposition of SnS nanostructures on ITO substrates was investigated by cyclic voltammetry, chronoamperometry, SEM microscopy, and X-ray diffraction techniques. The concentration-dependent nucleation and growth mechanisms of electrodeposited SnS were analyzed using current transients. For the concentrations (0.05M and 0.10 M), the SnS films follow 3D growth in instantaneous nucleation mode. For a concentration of 0.15M, the SnS films start with progressive nucleation before switching to the instantaneous More >

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