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CaO thin-film preparation using chemical bath deposition | ||
| Rafidain Journal of Science | ||
| Articles in Press, Accepted Manuscript, Available Online from 02 August 2025 | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/rjs.2025.158405.1427 | ||
| Author | ||
| jamal abd rasho* | ||
| mosul university | ||
| Abstract | ||
| CaO thin films were created using the chemical bath deposition process on glass substrates (slides). The optical and structural characteristics of films have been examined using contemporary testing methods, such as x-ray spectroscopy, field emission scanning electron microscopy, and spectrophotometers. The effect of deposition temperature, deposition period and KOH concentration have been investigated, the optical and structural characteristics of the CaO films clearly vary throughout all experiments. The film’s transmittance, absorbance and energy gap varied clearly with wave length. For films created using solutions with 1.702 and 3.92g of KOH concentration, the energy gap rises from 2.38 to 2.58 eV, but for films made at 50 and 70°C, it rises from 2.7 to 2.9 eV. The energy gap decreases from 2.6eV to 2.4eV for the films prepared at 20 and 30 min. the scanning electron microscope images and x ray spectrums for all samples agree with the variation in the optical properties. | ||
| Keywords | ||
| CaO thin films; TCO; chemical bath deposition; optical properties of semiconductors | ||
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