P. Sateesh^a,*, A. Raveendra^b,*, M. Ashok^c, S. S. Sivaraju^d, K. Umadevi^e, N. Rajeswaran^f

Chalcogenide Letters, Vol.20, No.11, pp. 779-787, 2023, DOI:10.15251/CL.2023.2011.779

Abstract In the present work, SnS thin films were prepared using the CBD technique at room temperature and varying annealing temperaturesfrom300 to 450 °C for photo detector applications. The prepared samples were characterized using different techniques for analyzing the structural, optical, morphological, and photo sensing properties of the samples. From XRD analysis, the diffraction pattern of all the prepared thin films shows the pristine SnS phase of the samples possessing an orthorhombic phase without the presence of any impurity phases. Among the fabricated thin films, the SnS thin film annealed at a temperature of 350 °C… More >

M. N. Abdel-Salam^a, N. Sabry^b, E. S. Yousef^c,d, E. R. Shaaban^a,*

Chalcogenide Letters, Vol.20, No.11, pp. 759-777, 2023, DOI:10.15251/CL.2023.2011.759

Abstract This study focused to prepare poly-crystalline (ZnSe)_1-xCu_x thin films, where x values vary from 0 to 0.1 %. the effect of Cu ratios dopant on structural, phases and optical properties has been investigated. As prepared thin films were deposited onto a cleaning glass substrate under high vacuum conditions (10^-7 mbr) at room temperature using the “ evaporation technique”. The analysis results according to data of the X-ray diffraction technique of all films refer to the growth polycrystalline with hexagonal wurtzite structure of Zn-Se with no presence of any further phases. The changes in numerous parameters such… More >

Y. Jie^a, S. R. Zhang^a,*, H. J. Hou^b, L. H. Xie^c

Chalcogenide Letters, Vol.20, No.12, pp. 903-913, 2023, DOI:10.15251/CL.2023.2012.903

Abstract Based on the first-principles method, the electronic structure, mechanical and optical properties of α-Cu₂S are studied. The results show that the optimized structural parameters are in good agreement with the experimental value. The energy band structure and density of states of α-Cu₂S is obtained by calculation and analysis. The mechanical properties such as bulk modulus, shear modulus, Young's modulus and Poisson's ratio are calculated at different pressures. At last, the dielectric function, refractive index, absorption coefficient and reflectivity of α-Cu₂S is analyzed. It was found that α-Cu₂S is a direct bandgap with a band gap of 1.2 More >

R. Jothiramalingam^*, H. Al-Lohedan, D. M. Al-Dhayan, A. Karami

Chalcogenide Letters, Vol.20, No.12, pp. 891-901, 2023, DOI:10.15251/CL.2023.2012.891

Abstract Layered structure transition metal chalcogenide compound’s such as Molybdenum sulfide (MoS₂) deposition in micro/meso porous architecture of MnO₂ could provide hybrid inter esting features. Multivalent MnO₂ is an attractive low cost and toxic free catalytic materi al for oxidation reaction and electrochemical applications. Non-ionic surfactant implica tion in mesoporous metal ion modified MnO₂ by deposition of metal chalcogenide is an ef fective composite for dye degradation applications. The low-cost pre-cursor makes it at tractive for large-scale production at industrial scale. Hence, in the present study deals with exploit the mechanism of metal chalcogenide and graphene oxide insertion More >

J. M. Al Abbas^a,*, L. Al Taan^a, M. M. Uonis^b

Chalcogenide Letters, Vol.20, No.12, pp. 883-890, 2023, DOI:10.15251/CL.2023.2012.883

Abstract In this work, cadmium selenide (CdSe) thin films were deposited successfully by spray pyrolysis at different substrate temperatures. The influence of the preparation technique on the optical, morphological, and structural properties of the different substrate temperature CdSe films were investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-Visible optical transmission. The XRD analysis reveals that CdSe thin film has hexagonal (wurtzite) and (cubic) crystal structures with different particle sizes depending on the substrate temperature. The SEM image shows uniform and adherent crystals. The optical energy gap was found to be in the More >

A. M. Raduta^a,b, A. M. Panaitescu^a, A. Radu^a, L. Ion^a, V. A. Antohe^a,c, O. Toma^a, S. Iftimie^a, S. Antohe^a,d,*

Chalcogenide Letters, Vol.20, No.12, pp. 871-882, 2023, DOI:10.15251/CL.2023.2012.871

Abstract This paper proposes a comparative study between two sub-micrometric multi-layered photovoltaic cells, based on A_II–B_VI compounds, using different structures for the holes transport and collection electrode. Using the modified form of the Shockley equation, the diode factor, n, the reverse saturation current, I₀, and the series R_s and shunt R_sh resistances were evaluated and their effect on the photovoltaic cells performances were discussed. The photovoltaic performances were analysed by current-voltage characteristics at illumination in standard AM 1.5 conditions, and the specific parameters were determined. More >

K. A. Mohammed^a,*, R. A. Talib^b, S. Algburi^c, A. Kareem^d, B. Bhavani^e, M. A. Alkhafaji^f, R. S. Zabibah^g, F. H. Alsultany^h, S. Sharma^i,j

Chalcogenide Letters, Vol.20, No.12, pp. 863-870, 2023, DOI:10.15251/CL.2023.2012.863

Abstract Novel nanocomposite structure has been made from physical mixing of polymer blend consist PMMA, PEO and PS filled with selenium nanoparticles. The nanocomposite had been deposited on glass slide by drop casting to form a thin film. This film was examined by required instrument like FESEM, XRD, EDS and UV-Vis to show the main physical properties of it. The XRD results were reflected the crystallinity nature of selenium NPs. SEM result shows the porosity nature of prepared film , where the pore size ranging from nano to micro size on all the surface of film. More >

G. Amirbekova^a, Zh. Tolepov^a,*, N. Guseinov^a, R. Nemkaeva^a, T. Kuanyshbekov^b, A. Ramazanova^a, D. Tlaubergenova^a

Chalcogenide Letters, Vol.20, No.12, pp. 857-861, 2023, DOI:10.15251/CL.2023.2012.857

Abstract Microcrystalline lead sulfide (PbS) films were synthesized using the chemical deposition method. The films were deposited on pre-cleaned glass substrates and polished silicon wafers. Chemicals of high purity were utilized in the process. The morphology, composition, and structure of the films were characterized using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). The films exhibited a galena phase with a face-centered cubic structure belonging to the Fm-3m space group. The average grain size was determined using the WilliamsonHall method, revealing a homogenous structure. Raman spectroscopy further confirmed the structural integrity of More >

A. Thamer^a, S. Mohamed^b,*

Chalcogenide Letters, Vol.20, No.12, pp. 847-856, 2023, DOI:10.15251/CL.2023.2012.847

Abstract Using Sol-gel technology, nanocomposite CdS: ZnO thin films with an equal molar ratio of 0.5 M on a glass substrate for water decontamination purposes. The ZnO doping ratios were (0, 1, 3, 5) vol. The ultrastructural, morphological, and optical properties of the prepared thin films were studied using X-ray diffraction (XRD), atomic force microscopy (AFM), and UV-vis spectra. The results indicated that the prepared nanostructured CdS: ZnO thin films contain uniformly spaced crystalline grains of both CdS and ZnO. The ZnO-doped selection ratio and uniform grain distribution produced outstanding photocatalytic and photocatalytic performance. With a More >

Jo Van Damme^1,$, Ghislain Opdenakker^2,$, Sam Van Damme³, Soffe Struyf¹

European Cytokine Network, Vol.34, No.1, pp. 1-9, 2023, DOI:10.1684/ecn.2023.0484

Abstract Polyclonal antisera from patients have been at the basis of the description of autoimmune diseases and today monoclonal antibodies are widely used in the therapy of cancer and many inflammatory diseases. How antisera and antibodies in combination with traditional in vitro and in vivo biological test systems have been instrumental reagents for the discovery of new cytokines is illustrated here for interleukin-1, -6 and -8. Furthermore, widely used immunological detection/quantification systems, such as ELISAs and multiplex assays, based on the use of either polyclonal or monoclonal antibodies, are often fraught with misinterpretations, because the results are affected More >