Abstract
Abstract In this work, TiO nanostructure films were deposited via vacuum thermal evaporation at a temperature of 80°C. The TiO thin films were annealed under vacuum for 1 h at three different degrees (200, 300, and 400°C) in addition to the thin film prepared at 80°C. X-ray Diffraction (XRD) showed that all the deposited and annealed TiO films had anatase polycrystalline diffraction patterns with a predominant reflection of the (200) plane. As a result, the particle size increased with annealing temperature. Scanning Electron Microscopy (SEM) measurements showed that at the annealed temperature of 200°C, the shape of the TiO nanostructures began to change from a condensed cluster distribution to a conical shape. As the annealing temperature was increased to 400°C, all the conical shapes transformed into clear spherical shapes. The spherical shapes recorded 45 (nm) height and (20) (nm) base width. Optical measurements were performed using Ultraviolet-Visible spectroscopy (UV-Vis). The transmittance is reduced from 79.63% for the TiO sample prepared at 80°C to 71.91% for the TiO sample annealed at 400°C. The optical energy gap values decrease from 3.279 eV for the prepared TiO sample at 80°C to 3.115 eV for the TiO sample annealed at 400°C.
Highlights
In this work, TiO nanostructure films were deposited via vacuum thermal evaporation at a temperature of 80∘C
The relationship of the full width at half maximum (FWHM) with the annealing temperature for all samples decreases with increased annealing temperature
Titanium oxide was deposited in the TiO phase using the thermal evaporation method
Summary
Abstract: In this work, TiO nanostructure films were deposited via vacuum thermal evaporation at a temperature of 80∘C. The TiO thin films were annealed under vacuum for 1 h at three different degrees (200, 300, and 400∘C) in addition to the thin film prepared at 80∘C. Scanning Electron Microscopy (SEM) measurements showed that at the annealed temperature of 200∘C, the shape of the TiO nanostructures began to change from a condensed cluster distribution to a conical shape. As the annealing temperature was increased to 400∘C, all the conical shapes transformed into clear spherical shapes. The transmittance is reduced from 79.63% for the TiO sample prepared at 80∘C to 71.91% for the TiO sample annealed at 400∘C. The optical energy gap values decrease from 3.279 eV for the prepared TiO sample at 80∘C to 3.115 eV for the TiO sample annealed at 400∘C
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