Abstract
This study investigates the effect of varying deposition time on the properties of CdS films deposited by chemical bath deposition technique. The experimental results indicate that all the deposited films exhibit a crystalline structure, with the film structure transformed from cubic to hexagonal as the deposition time increases from 60 to 120 min. The film morphology confirms the formation of uniformly distributed grains, with the grain size decreasing as the deposition time increases. Furthermore, an increase in the deposition time from 60 to 120 min leads to a decrease in the optical energy gap of the CdS film from 2.73 to 2.35 eV. The optoelectronic properties of CdS/Si photodetector are investigated as a function of deposition time. The maximum photocurrent was obtained for the photodetector deposited at 60 min. The responsivity, external quantum efficiency, and specific detectivity of CdS/Si deposited at 60 min were 0.26 A/W at 450 nm, 82% at 400 nm, and 9.07 × 1011 Jones at 450 nm, respectively.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author (Raid A. Ismail)) on reasonable request.
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RAI and FMA conceived of the presented idea. RAI, MAF, and AMM supervised the finding of this work. FMA, ETS, and AMM discussed the results. All authors conducted the experiments. All authors provided critical feedback and helped shape the research, analysis, and manuscript.
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Ahmed, F.M., Muhammed Ali, A.M., Ismail, R.A. et al. Investigating the influence of deposition time on nanostructured CdS film prepared by chemical bath deposition for photodetection applications. J Mater Sci: Mater Electron 34, 1906 (2023). https://doi.org/10.1007/s10854-023-11380-z
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DOI: https://doi.org/10.1007/s10854-023-11380-z