Influence of growth temperature variation of Cr2O3 thin film on nonlinear optical characterization | ||||
| Aswan University Journal of Sciences and Technology | ||||
| Articles in Press, Accepted Manuscript, Available Online from 02 September 2025 PDF (1.51 MB) | ||||
| Document Type: Original papers | ||||
| DOI: 10.21608/aujst.2025.389054.1188 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Elham Hassan Elanssary  ; Ebrahim Mohammed Ali; Ayman Ahmed Elamin
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| Physics, Science, Aswan university, Aswan , Egypt | ||||
| Abstract | ||||
| This study discussed the effect of temperatures on the structural and optical properties of the Cr2O3 thin films. Thin films of Cr2O3 were deposited using the spray pyrolysis technique with different growth temperatures. The primary solution of 0.1 mole was sprayed on glass substrates at 250,350, and 450 ˚C using air as the carrier gas. According to XRD, SEM, and Visible - UV optical spectroscopy measurements, the samples were characterized by a polycrystalline structure and distinctive optical properties of thin films. The XRD analysis confirmed the hexagonal structure of thin films, and the average crystallite size of the samples prepared at the highest temperature (450 °C) is 13.17 nm. Scanning electron microscopy (SEM) illustrated the morphology of coated samples and showed the spherical configuration of crystals. These samples exhibit a direct band gap, and the band gap energy increased from 2.47585 at 250 °C to 3.0343 eV at 450 °C. | ||||
| Keywords | ||||
| Cr2O3; nanoparticles; thin film; spray pyrolysis; direct band gap | ||||
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