Optical properties of titanium oxide films obtained by cathodic arc plasma deposition
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AuthorsJokanović, Vukoman R.
Čolović, Božana M.
Petkoska, Anka Trajkovska
Mraković, Ana Đ.
MetadataShow full item record
Structural and optical properties of nanometric titanium oxide (TixOy) films obtained by cathodic arc plasma deposition were investigated. Phase analysis by x-ray diffraction and Fourier-transform infrared spectroscopy showed the presence of anatase, rutile, Ti2O3, Ti4O7 and amorphous phases. Scanning electron microscopy images showed well-developed surface morphology with nano-patterns. Spectroscopic ellipsometry revealed film thicknesses of 53 and 50 nm, variable refractive indices dependent on the light wavelength and close to zero extinction coefficients for wavelengths higher than 500 nm. On the basis of ultraviolet-visible spectroscopy data and using the Tauc equation, band gap values for direct and indirect electron transitions were determined.
Keywords:optical materials / plasma deposition / thin films / ellipsometry
Source:Plasma Science and Technology, 2017, 19, 12
- Chemical and structural designing of nanomaterials for application in medicine and tissue engineering (RS-172026)
- COST action [MP1306]