Authors :
Sameerah S. S. Alqadasy; S. Q. Chishty; Hakim Q. N. M. Al-arique; Elyas Sadeq Al-Aghbari; Niyazi A. S. Al-Areqi
Volume/Issue :
2nd ICTSA-2022
Google Scholar :
https://bit.ly/3TmGbDi
Scribd :
https://bit.ly/3Z7UsF7
DOI :
https://doi.org/10.5281/zenodo.7765606
Abstract :
TiO2-Al2O3-La2O3 thin films were prepared on
glass substrates from solution of Ti [OCH(CH3)2]4,
AlCl3.6H2O and LaCl3.7H2O at room temperature using a
chemical bath deposition (CBD) method. The
morphological, structural and optical properties of the
TiO2-Al2O3-La2O3 thin films were investigated using Xray diffraction (XRD), field emission- scanning electron
microscopy (FE-SEM), Fourier- infrared (FT-IR)
spectrometer, Raman spectrometer and UV-VIS
spectrophotometry. The XRD results showed that the
average crystal size for TiO2-Al2O3-La2O3 film at La
concentration, with the hexagonal phase and the degree of
crystallization strengthening after annealing. The Raman
spectrum showed many small peaks and abroad peak,
after annealed the intensity of peaks decreases with
increasing the La concentration, and sharp peaks are
observed in only at the first concentration and a large
hump with increasing the concentration of (La). FT-IR
spectra showed absorption peaks of different functional
groups (i.e., O-H, C-O, Ti-O-Ti, Al-O and La-O), it’s
become sharp peaks after annealing with increasing
concentration of La, which indicate of crystallization. FESEM images revealed 3D particles of TiO2-Al2O3- La2O3
thin film, and the films were almost homogeneous and
uniform. The bandgap energy (Eg) of TiO2-Al2O3 doped
with La thin film show decreased in the value with
increase (La) concentration in both cases before and after
annealing, respectively
Keywords :
TiO2-Al2O3 -La2O3; CBD; Annealing; Morphological; Band-Gap Energy.
TiO2-Al2O3-La2O3 thin films were prepared on
glass substrates from solution of Ti [OCH(CH3)2]4,
AlCl3.6H2O and LaCl3.7H2O at room temperature using a
chemical bath deposition (CBD) method. The
morphological, structural and optical properties of the
TiO2-Al2O3-La2O3 thin films were investigated using Xray diffraction (XRD), field emission- scanning electron
microscopy (FE-SEM), Fourier- infrared (FT-IR)
spectrometer, Raman spectrometer and UV-VIS
spectrophotometry. The XRD results showed that the
average crystal size for TiO2-Al2O3-La2O3 film at La
concentration, with the hexagonal phase and the degree of
crystallization strengthening after annealing. The Raman
spectrum showed many small peaks and abroad peak,
after annealed the intensity of peaks decreases with
increasing the La concentration, and sharp peaks are
observed in only at the first concentration and a large
hump with increasing the concentration of (La). FT-IR
spectra showed absorption peaks of different functional
groups (i.e., O-H, C-O, Ti-O-Ti, Al-O and La-O), it’s
become sharp peaks after annealing with increasing
concentration of La, which indicate of crystallization. FESEM images revealed 3D particles of TiO2-Al2O3- La2O3
thin film, and the films were almost homogeneous and
uniform. The bandgap energy (Eg) of TiO2-Al2O3 doped
with La thin film show decreased in the value with
increase (La) concentration in both cases before and after
annealing, respectively
Keywords :
TiO2-Al2O3 -La2O3; CBD; Annealing; Morphological; Band-Gap Energy.
