Effect of Molar Concentrations on the Structural and Optical Properties of Zinc Oxide Thin Films

Thin films of zinc oxide (ZnO) were deposited on soda-lime (glass) substrate using chemical bath deposition (CBD) technique. The structural and optical properties of the deposited films were investigated using X-ray diffractometer (XRD) and UV- spectrophotometric measurements. The absorption data we...

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Main Authors: Ejelonu A Chioma, Joseph O Emegha
Format: Article
Language:English
Published: Department of Physics, Kaduna State University, Nigeria 2022-10-01
Series:Physics Access
Subjects:
Online Access:https://physicsaccess.com/articles/published/PA-JPET-SPECIAL_1.pdf
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author Ejelonu A Chioma
Joseph O Emegha
author_facet Ejelonu A Chioma
Joseph O Emegha
author_sort Ejelonu A Chioma
collection DOAJ
description Thin films of zinc oxide (ZnO) were deposited on soda-lime (glass) substrate using chemical bath deposition (CBD) technique. The structural and optical properties of the deposited films were investigated using X-ray diffractometer (XRD) and UV- spectrophotometric measurements. The absorption data were used to determine the energy band gap and other optical parameters. It was observed that the films were polycrystalline in nature with high optical transmittance. The energy band gaps were found to vary between 3.09 and 3.45 eV using the absorption spectrum fitting (ASF) method. The influence of molar concentrations on the extinction coefficient, refractive index, real and imaginary dielectric constants was also discussed. The study shows that the optical parameters were greatly influenced by the molar concentrations.
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spelling doaj.art-22085ea0b81b4a72ad36ed2f3e2a7e502023-02-02T16:01:54ZengDepartment of Physics, Kaduna State University, NigeriaPhysics Access2714-500X2756-38982022-10-0123 (SP/ISS/2022/01)1610.47514/phyaccess.sp.iss.2022.1.001Effect of Molar Concentrations on the Structural and Optical Properties of Zinc Oxide Thin FilmsEjelonu A Chioma0Joseph O Emegha1Department of Physics, Faculty of Physical Sciences, University of Benin, PMB 1154, Benin City, Edo State, NigeriaCollege of Natural and Applied Sciences, Novena University Ogume, P.M.B. 2, Kwale, Delta State, NigeriaThin films of zinc oxide (ZnO) were deposited on soda-lime (glass) substrate using chemical bath deposition (CBD) technique. The structural and optical properties of the deposited films were investigated using X-ray diffractometer (XRD) and UV- spectrophotometric measurements. The absorption data were used to determine the energy band gap and other optical parameters. It was observed that the films were polycrystalline in nature with high optical transmittance. The energy band gaps were found to vary between 3.09 and 3.45 eV using the absorption spectrum fitting (ASF) method. The influence of molar concentrations on the extinction coefficient, refractive index, real and imaginary dielectric constants was also discussed. The study shows that the optical parameters were greatly influenced by the molar concentrations.https://physicsaccess.com/articles/published/PA-JPET-SPECIAL_1.pdfband gapzinc oxiderefractive indexopticalthin films
spellingShingle Ejelonu A Chioma
Joseph O Emegha
Effect of Molar Concentrations on the Structural and Optical Properties of Zinc Oxide Thin Films
Physics Access
band gap
zinc oxide
refractive index
optical
thin films
title Effect of Molar Concentrations on the Structural and Optical Properties of Zinc Oxide Thin Films
title_full Effect of Molar Concentrations on the Structural and Optical Properties of Zinc Oxide Thin Films
title_fullStr Effect of Molar Concentrations on the Structural and Optical Properties of Zinc Oxide Thin Films
title_full_unstemmed Effect of Molar Concentrations on the Structural and Optical Properties of Zinc Oxide Thin Films
title_short Effect of Molar Concentrations on the Structural and Optical Properties of Zinc Oxide Thin Films
title_sort effect of molar concentrations on the structural and optical properties of zinc oxide thin films
topic band gap
zinc oxide
refractive index
optical
thin films
url https://physicsaccess.com/articles/published/PA-JPET-SPECIAL_1.pdf
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