Title : Morphological studies of quaternary alloys
Abstract:
The Cu2Zn1-xCdxSnS4 quinternary alloy nanofibres with different Cd concentrations were grown on glass substrate using the electrospinning technique. The structural properties of Cu2Zn1-xCdxSnS4 quinternary alloy nanofibres were investigated by X-ray Diffraction (XRD), Field Emission-Scanning Electron Microscopy (FE-SEM) and Atomic Force Microscopy (AFM). Optical properties were analysed through UV-visible Spectrophotometry (UV-Vis) and Photoluminescence Spectroscopy (PL), which revealed that there is a decrease in band gap from 1.75 eV to 1.61 eV, with the increasing Cd concentration from x = 0 to x =1. The current–voltage measurements exhibited a power conversion efficiency of 3% under the solar illumination with intensity of 100 mW/cm2. Electrical properties supported that the Cu2Zn1-xCdxSnS4 quinternary alloy can be used as an absorber in solar cells. The bulk modulus, refractive index and dielectric constant, were also investigated.
Morphological studies of quinternary alloys play a crucial role in understanding the relationship between microstructure and material performance in advanced engineering and technological applications. Quinternary alloys, composed of five principal elements, exhibit complex phase formations, unique grain structures, and enhanced mechanical, thermal, electrical, and corrosion-resistant properties compared with conventional binary or ternary alloys. Morphological characterization focuses on examining surface features, grain boundaries, crystallite size, porosity, phase distribution, and particle agglomeration using analytical techniques such as Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Atomic Force Microscopy (AFM), and X-ray Diffraction (XRD). These studies provide valuable insight into how synthesis methods, heat treatment, cooling rates, and compositional variations influence the alloy structure. Uniform morphology and fine grain distribution often contribute to improved hardness, tensile strength, conductivity, and catalytic efficiency. In nanostructured quinternary alloys, morphology strongly affects electron transport, optical behavior, and magnetic properties, making them highly attractive for applications in energy storage, solar cells, sensors, coatings, and biomedical devices. Furthermore, morphological investigations help identify defects, secondary phases, and structural instabilities that may reduce performance or durability. Understanding these microstructural characteristics enables researchers to optimize alloy fabrication processes and design high-performance multifunctional materials for industrial, environmental, and technological advancements.
