Optical characteristics of ZnO films under different thickness: A MATLAB- based computer calculation for photovoltaic applications

Designing of appropriate thin film is important for controlling the absorbance, reflection and transmission of specific wavelength of electromagnetic radiation and which will ultimately enhance the optoelectronic properties. This paper presents optical analysis of ZnO thin films using transmission s...

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Bibliographic Details
Published inPhysica. B, Condensed matter Vol. 631; p. 413614
Main Authors Zargar, Rayees Ahmad, Kumar, Kundan, Mahmoud, Zakaria M.M., Shkir, Mohd, AlFaify, S.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.04.2022
Elsevier BV
Subjects
Electromagnetic radiation
Electromagnetism
Film thickness
Matlab
MATLAB- Simulation
Optical properties
Optoelectronic devices
Optoelectronics
Radiation
Refractivity
Swanepoel model
Thin film
Thin films
Zinc oxide
Zinc oxides
ZnO
MATLAB- Simulation
Optoelectronics
ZnO
Swanepoel model
Thin film
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Summary:Designing of appropriate thin film is important for controlling the absorbance, reflection and transmission of specific wavelength of electromagnetic radiation and which will ultimately enhance the optoelectronic properties. This paper presents optical analysis of ZnO thin films using transmission spectra derived by Sellmeier model upon different thickness. For that a famous computing language “MATLAB” was employed to generate transmission data. The transmittance profile of ZnO/glass films was examined for diverse thicknesses (600 nm, 700 nm, 800 nm). Further, the different parameters such as index of refraction, coefficient of extinction, band gap and constant of dielectric were calculated by different formulas with respect to wavelength in the UV–visible region under different thickness. It is also found that the thickness-based interference on transmission and reflectance characteristics were altered by film thickness. This sort of research work will help us to find out the suitable thin film thickness coating for designing micro/nano optoelectronic devices. •A Sellmeier model is used for evolution of optical properties of ZnO films with the help of MATLA simulation.•Transmission data has been interpreted for various optical parameters and give a better spectral fitting.•Optical studies reveal that band gap energy decrease from 3.38 to 3.33eV with increase of film thickness.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2021.413614