A study on electrodeposited of ZnO/ZnS heterostructures. Issue 5 (4th May 2019)

• Record Type: Journal Article
• Authors: Rayhana, Bengas; Mustapha, Bouhenguel; Redha, Khelladi Mohamed; Halla, Lahmar; Amor, Azizi
• Is Part Of: Journal of dispersion science and technology. Volume 40:Issue 5(2019)
• Page Start: 668
• Page End: 678
• Publication Date: 2019-05-04
• Subjects: Electrodeposition -- heterostructure -- ZnO/ZnS; Emulsions -- Periodicals; Suspensions (Chemistry) -- Periodicals; Emulsions; Suspensions; 541.34
• DOI: 10.1080/01932691.2018.1478302
• Languages: English
• ISSNs: 0193-2691

Abstract

Abstract: ZnO/ZnS heterostructures were synthesized by a two steps electrochemical deposition method. Firstly, ZnS layer was deposited from an aqueous solution containing Na2 S2 O3 and ZnSO4 onto indium-doped tin oxide (ITO) coating glass substrate at two deposition potentials. Then, ZnO nanostructures were deposited from an aqueous solution of Zn(NO3 ) onto ZnS surface. The as-obtained samples were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD), Raman and UV-visible analysis. The results indicate that the electrodeposition of ZnS layer at −0.9 V give the best proprieties of ZnO/ZnS heterostructures. Homogeneous and uniform surface of ZnO/ZnS heterostructure was confirmed by AFM images. The XRD patterns indicates a high crystallinity of ZnO/ZnS. A high transmittance of 65% was also noted from UV-Visible spectra and band gap energy as large as 3.6 eV was found. Graphical Abstract: