Investigations on the physical properties of the polycrystalline ZnS thin films deposited by the chemical bath deposition method


Journal of Crystal Growth, vol.299, no.1, pp.136-141, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 299 Issue: 1
  • Publication Date: 2007
  • Doi Number: 10.1016/j.jcrysgro.2006.10.266
  • Journal Name: Journal of Crystal Growth
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.136-141
  • Keywords: optical properties, X-ray diffraction, chemical bath deposition, zinc sulfide, electrical properties, ZINC-SULFIDE, SPRAY-PYROLYSIS, CDS, PARTICLES
  • Anadolu University Affiliated: Yes


Transparent and polycrystalline zinc sulfide (ZnS) thin films were prepared by the chemical bath deposition (CBD) technique onto glass substrates deposited at 80 °C using aqueous solution of zinc acetate, thiourea, triethanolamine and tri-sodium citrate at a pH of about 10.55. Triethanolamine and tri-sodium citrate were used as complexing agents. The thickness of the films, which were calculated from the interference patterns around 400-800 nm maxima and minima wavelengths, varied from 403 to 934 nm in the visible range. UV-visible spectrophotometric measurement showed transperancy from 66% to 87% of the films with a direct allowed energy band gap in the range of 3.79-3.93 eV. X-ray diffraction (XRD) patterns prove crystallinity of deposited films that crystallize in the hexagonal phase of ZnS. The ZnS thin films were characterized by XRD, energy dispersive X-ray analysis (EDX) and optical absorption spectra. The current-voltage characteristic of polycrystalline ZnS films grown by CBD are reported. © 2006 Elsevier B.V. All rights reserved.