DEPOSITION ANGLE DEPENDENCE OF TANTALUM OXIDE NANOLAYERS ON THE STRUCTURAL AND OPTICAL PROPERTIES AS A FUNCTION OF THICKNESS

Somayeh Jalilpour Darghlou, Haleh Kangarlou and Vahedeh Razzazi
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Somayeh Jalilpour Darghlou: Department of Physics, Urmia Branch, Islamic Azad University, Urmia, Iran
Haleh Kangarlou: Department of Physics, Urmia Branch, Islamic Azad University, Urmia, Iran
Vahedeh Razzazi: Department of Physics, Urmia Branch, Islamic Azad University, Urmia, Iran

Surface Review and Letters (SRL), 2022, vol. 29, issue 08, 1-14

Abstract: Tantalum oxide nanolayers with different thicknesses (30, 60, 90 and 120 nm) were deposited on glass substrates at a deposition angle of 60∘ under high vacuum condition at room temperature by using electron gun evaporation method. The morphological, structural and optical properties of tantalum oxide nanolayers are investigated by XRD, FESEM, EDX, AFM and spectrophotometer. Kramers–Kronig relations are used to calculate the optical parameters. Optical results show that the real and imaginary parts of the dielectric function, the real part of the refractive index and bandgap energy have increased with increasing film thickness.

Keywords: Tantalum oxide; Kramers–Kronig relations; deposition angle; optical properties (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X22501062

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