Applied Chemical Engineering

Effect of Zn2+ Concentration on the Zinc Oxide Properties Prepared by Electrochemical Deposition

A. Henni

Laboratoire des Matériaux inorganiques, Université Mohamed Boudiaf Kasdi Merbeh University

A. Karar

Laboratoire d'Energétique et d'Electrochimie du solide, Université Ferhat Abbas

A. Merrouche

Laboratoire des Matériaux inorganiques, Université Mohamed Boudiaf

L. Telli

Laboratoire des Matériaux inorganiques, Université Mohamed Boudiaf

DOI: https://doi.org/10.24294/ace.v2i1.641

Keywords: Electrochemical Growth, Zno, Nanorods, Thin Films, Zinc Concentration

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Abstract

In this work, ZnO nanostructures are electrodeposited on ITO conducting substrate prepared from chloride baths. The influence of concentration of Zn²⁺ on the electrochemical characteristics has been studied using cyclic voltammetry (CV) and chronoamperometry (CA) techniques. The Mott–Schottky measurements demonstrate an n-type semiconductor character for all samples with a carrier density varying between 1.47 × 1,018 cm⁻³ and 3.14 × 1,018 cm⁻³. Scanning electron microscopy (SEM) show arrays of vertically aligned ZnO nanorods (NRs) with good homogeneity. X-ray diffraction spectra demonstrate that films crystalline with the Würtzite structure with preferential (002) crystallographic orientation having c-axis perpendicular to the substrate. The high optical properties of the ZnO NRs with a low density of deep defects was checked by UV-Vis transmittance analyses, the band gap energy of films varies between 3.3 and 3.4 eV with transparency around 80-90%.

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Author Biography

A. Henni, Laboratoire des Matériaux inorganiques, Université Mohamed Boudiaf Kasdi Merbeh University

Dr.Abdellah Henni is working as aassociate professor at the Faculty of Natural Sciences and Life at Kasdy Merbah University (Ouargla, Algeria)

His area of research interest include: Material and Thin Films, Nanotechnology, Energy and Environment

His publications includes numerous peer-reviewed articles in the international SCI/SCI-E indexed journals and many congress papers in his field of specialization.

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