A study on electrodeposited of ZnO/ZnS heterostructures |
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| Authors: | Bengas Rayhana Khelladi Mohamed Redha Lahmar Halla Azizi Amor |
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| Institution: | 1. Laboratoire de Chimie Appliquée et Technologie des Matériaux – Université Larbi Ben Mhidi Oum El Bouaghi, Algeria;2. Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures, Université Ferhat Abbas-Sétif 1, Algeria;3. Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures, Université Ferhat Abbas-Sétif 1, Algeria |
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| Abstract: | ZnO/ZnS heterostructures were synthesized by a two steps electrochemical deposition method. Firstly, ZnS layer was deposited from an aqueous solution containing Na2S2O3 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. |
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| Keywords: | Electrodeposition heterostructure ZnO/ZnS |
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