G. Yan^a, S. R. Zhang^a,*, H. J. Hou^b, Z. F. Yin^b, H. L. Guo^c

Chalcogenide Letters, Vol.22, No.1, pp. 33-42, 2025, DOI:10.15251/CL.2025.221.33

Abstract The theoretical approach was employed to comprehensively investigate the structural, dynamical, band structure, optical characteristics, and elastic anisotropy of CuAlS₂. The determined lattice parameters (a and c), elastic properties exhibit with the available data. The band structure and density of state indicates that CuAlS₂ exhibits semiconductor properties, characterized by a direct band gap measuring approximately 1.791 eV. The mechanical stability and optical properties of CuAlS₂ was calculated and analyzed. More >

L. Gahramanli^a,b,c,*, M. Muradov^a, G. Eyvazova^a, A. Karimova^a, M. Jafarov^b

Chalcogenide Letters, Vol.22, No.2, pp. 109-121, 2025, DOI:10.15251/CL.2025.222.109

Abstract The study presents nanocomposite materials based on Cd_xZn_1-xS, synthesized as thin films and nanoparticles through two distinct techniques—sonochemical and SILAR synthesis techniques. The characteristics of these materials were investigated using X-ray diffraction (XRD), Ultraviolet spectroscopy (UV-Vis), Fourier-transform infrared (FTIR) spectroscopy, and Scanning Electron Microscopy (SEM). In the sonochemical approach, samples were prepared with three different stabilizers for comparative analysis to determine influence of type of the stabilizers. Meanwhile, the SILAR approach created thin layers with different components (distinctive x value-Cd_xZn_1-xS) at various grown temperatures utilizing polyvinyl alcohol (PVA) as a substrate. At the same time, nanocomposite More >

T. J. Li^a,*, Y. Yue^a, L. P. Qu^a, H. J. Hou^b, S. H. Fan^b, H. L. Guo^c, S. R. Zhang^d

Chalcogenide Letters, Vol.22, No.10, pp. 917-927, 2025, DOI:10.15251/CL.2025.2210.917

Abstract The material AgAlSe₂, which adopts a chalcopyrite crystal structure, has attracted significant attention owing to its promising functional properties. To further explore its characteristics, theoretical method was conducted to explore its elastic behavior, electronic structure, dynamic stability, and thermodynamic features. The lattice parameters and elastic constants obtained through simulation agrees well with the reported data. Additionally, the mechanical stability of AgAlSe₂ was assessed through its elastic constants, confirming its structural integrity. Electronic property analysis reveals that AgAlSe₂ exhibits semiconducting behavior, featuring a direct band gap of approximately 1.1377 eV. More >

John Nwoanjia¹, Jean Jalin Eyinga Biwôlé^1,2,*, Joseph Zobo Mfomo¹, Evariste Fedoung Fongnzossie¹, Antonio Pizzi², Salomé Ndjakomo Essiane³, Achille Bernard Biwole¹

Journal of Renewable Materials, Vol.13, No.5, pp. 901-914, 2025, DOI:10.32604/jrm.2025.02024-0005 - 20 May 2025

Abstract This review aims to identify the assets and limitations of Dabema (Piptadeniastrum africanum) as a sustainable alternative to traditional timber species for furniture and construction applications. Dabema is characterized by its high density and dimensional stability, meeting ASTM (American Society for Testing and Materials) standards for mechanical strength, which is essential for promoting its use. However, its limited availability in trade and ingrained habits of use are obstacles to its widespread commercialization. In addition, thermal and oleothermal treatments have shown great potential for improving the characteristics of this wood, although they require ongoing optimization and rigorous More > Graphic Abstract

Pattaranun Thuadaij, Bualoy Chanpaka^*

Journal of Renewable Materials, Vol.13, No.4, pp. 753-772, 2025, DOI:10.32604/jrm.2025.057590 - 21 April 2025

Abstract Natural rubber (NR) foams are widely used. However, further studies are required for preparing eco-friendly NR foam and determining the optimum physical properties appropriate for application. This study aims to create an NR foam from rubber reinforced with sugarcane bagasse ash (SCBA) and sodium alginate. The results showed that the SCBA was primarily composed of silica or silicon dioxide (87.52% by weight) and carbon (11.41% by weight). This study investigated the influence of the amount of sodium alginate (0–5 phr) used in the NR foam formation. The addition of SCBA on the NR foam affected More > Graphic Abstract

Chakar Khadija^*, El Mouden Mahmoud, Hajjaji Abdelowahed

FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.1, pp. 61-70, 2025, DOI:10.32604/fdmp.2024.053458 - 24 January 2025

Abstract The primary objective of this study is to develop an innovative theoretical model to accurately predict the thermophysical properties of hybrid nanofluids designed to enhance cooling in solar panel applications. This research lays the groundwork for our future studies, which will focus on photovoltaic thermal applications. These nanofluids consist of water and nanoparticles of alumina (Al₂O₃), titanium dioxide (TiO₂), and copper (Cu), exploring volumetric concentrations ranging from 0% to 4% for each type of nanoparticle, and up to 10% for total mixtures. The developed model accounts for complex interactions between the nanoparticles and the base fluid, More >

A. A. Mansour^a, H. A. Salman^b, S. A. Abdul Wahab^c, N. F. Habubi^c, S. S. Chiad^d,*, Z. S. A. Mosa^c, Y. H. Kadhim^d

Chalcogenide Letters, Vol.21, No.3, pp. 275-284, 2024, DOI:10.15251/CL.2024.213.275

Abstract To grow SnS films, the spray pyrolysis deposition (SPD) process is applied. The films were deposited at various substrate temperatures (S_T) of 400, 450, and 500 degrees Celsius for two hours. Through XRD analysis, the impact of ST on the structure was investigated. Peak (113) crystallite sizes were 13.16, 21.48, and 38.87 nm, respectively, at base temperatures of (400, 450, and 500) ℃. The effect of ST on the structure was examined using XRD analysis. A predominat Peak at (113) plane. The crystallite sizes at base temperatures of (400, 450, and 500) ℃ were 13.16, 21.48, More >

W. H. Albanda^a, M. H. Saeed^a, M. Z. Abdullah^b, M. H. Al-Timimi^c,*

Chalcogenide Letters, Vol.21, No.5, pp. 439-447, 2024, DOI:10.15251/CL.2024.215.439

Abstract In this study, CdS: MgO films were synthesized using the chemical spray pyrolysis method, varying the film thickness. X-ray diffraction (XRD) analysis confirmed the polycrystalline nature of the films, with an observed increase in average crystallite size corresponding to thicker films, and The films' surface morphology indicates an absence of crystal defects such as holes and voids . The investigation of energy gap and optical parameters revealed a dependency on film thickness, with the energy gap shifting from 2.412 eV for a thickness of 150 nm to 2.354 eV for a thickness of 750 nm. More >

L. R. Gahramanli^a,b,*, S. Bellucci^a, M. B. Muradov^b, M. La Pietra^a, G. M. Eyvazova^b, C. V. Gomez^a, J. Bachmann^c

Chalcogenide Letters, Vol.21, No.7, pp. 513-527, 2024, DOI:10.15251/CL.2024.217.513

Abstract A new type of Ag₂S-CdS/Ag/GNP nanocomposite material was successfully synthesized in the presented work. The structural and physical properties of compounds were studied separately and together. Ag₂S-CdS/Ag/GNP nanocomposite materials were studied by Xray diffraction (XRD), Ultraviolet-Visible (UV-Vis), Fourier Transform Infrared (FTIR), Raman spectroscopy and Scanning Electron Microscopy (SEM). Based on the results, Ag nanowires (NWs) were successfully synthesized, and then it was determined that during the hybridization process, two phases of acanthite Ag₂S and the cubic crystal system of Ag₂O were formed. Then, Ag₂S-CdS NWs were formed from mixed monoclinic Ag₂S and hexagonal CdS. In the absorption spectrum… More >

H. K. Mahmood^*, B. H. Hussein

Chalcogenide Letters, Vol.21, No.9, pp. 687-694, 2024, DOI:10.15251/CL.2024.219.687

Abstract ZnIn₂(Se_1-xTe_x)₄ (ZIST) chalcopyrite semiconductor thin films at various contents (x = 0.0, 0.2, and 0.4) are deposited on glass and p type silicon (111) substrate to produce heterojunction solar cell by using the thermal evaporation technique at RT where the thickness of 500 nm with a vacuum of 1×10^-5 mbar and a deposited rates of 5.1 nm/s. This study focuses on how differing x content effect on the factors affecting the solar cell characteristics of ZIST thin film and n-ZIST/p-Si heterojunction. X-ray diffraction XRD investigation shows that this structure of ZIST film is polycrystalline and tetragonal,… More >