Title Structure, composition and optical properties of thin films of copper sulphide and bismuth sulphide deposited on various textiles by the SILAR method
Authors Sruogaitė, Vėja ; Krylova, Valentina
DOI 10.3390/coatings15111266
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Is Part of Coatings.. Basel : MDPI. 2025, vol. 15, iss. 11, art. no. 1266, p. 1-22.. ISSN 2079-6412
Keywords [eng] bismuth(III)-copper(II) sulphide films ; structural textile ; SILAR ; SEM ; optical properties
Abstract [eng] The synthesis of thin films in multilayer structures on different textiles is of interest due to their potential use in flexible solar absorber coatings and thin-film solar cells. The aim of the study was to deposit bismuth(III) sulphide and copper(II) sulphide thin films on various textiles at the same time. This was achieved using the sustainable and cost-effective successive ionic layer adsorption and reaction (SILAR) method. The study examined how the elemental distribution, phase composition, crystallinity, surface morphology, and optical features of the resulting films are determined by the intrinsic structure and material makeup of structural textiles. The analysis used data from scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy and X-ray diffraction (XRD), as well as ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy. Depending on the textiles used, the formed films were polycrystalline and rich in copper. According to the findings, the normalised atomic percentages were as follows: Cu, 57.66–68.75%; Bi, 1.19–5.26%; S, 30.06–38.63%. The direct transition optical energy gap values varied from 1.3 to 2.88 eV, while the indirect varied from 0.9 to 2.25 eV, and the refractive index from 1.3 to 1.8. These properties were influenced by the composition of the textiles and the films themselves. These properties directly impact the films’ applications.
Published Basel : MDPI
Type Journal article
Language English
Publication date 2025
CC license CC license description