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×published date:2024-Nov-14
FULL TEXT in - | page 315 -321
Abstract
Using MgSo4.7H2O as a starting precursor Magnesium oxide (MgO) thin films were effectively synthesised on Fluorine-doped Tin Oxide (FTO) glass substrates by electrode position method. By varying the deposition time, different thin films of thickness were prepared. An Ava-Spec-Uls 2048CL-2EV0 Spectrophotometer was used to obtain the absorbance spectra data. Other optical properties investigated from the calculation based on the data were, transmittance; Reflectance refractive index,thickness and band gap. Results obtained showed that MgO film thickness approximating 0.073μm to 0.125 μm for films deposited within the time range of 0.5minutes to 2.5minutes respectively. The highest value of 0.21 abr unit was observed in the UV region for the absorbance. Transmittance value of about 61% and 94% were observed in the UV and NIR regions of the EMSrespectively. Very high absorption coefficients (very low reflectance) were observed all through the UV-VIS NIR regions of the EMS. The thin films also recorded optical band gap, which ranged between 4.10 eV and 4.40 eV. The high transmittance value in the UV and NIR regions and the low reflectance of the MgO thin films make them suitable for optical applications and minimal light reflection respectively
Keywords: Optical, Electrodeposition, Magnesium Oxide, Absorbance, Thin Films
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